Class / Patent application number | Description | Number of patent applications / Date published |
524457000 | Polymerizing an ethylenic monomer in the presence of a preformed SICP or solid polymer and in the presence of a nonreactive material so as to form an aqueous dispersion, latex, suspension, or emulsion therewith; or product thereof | 63 |
20080275174 | PROCESS FOR PREVENTING GEL FORMATION IN LATTICES OF HYDROGENATED, LOW MOLECULAR WEIGHT, FUNCTIONALIZED ELASTOMERS - The present invention discloses a process for hydrogenating a latex of a low molecular weight functionalized, unsaturated elastomer to produce a latex of a hydrogenated, low molecular weight, low gel, functionalized elastomer, said process comprising hydrogenating the low molecular weight, functionalized, unsaturated elastomer in the presence of (1) an oxidant selected from the group consisting of oxygen and hydroperoxides, (2) a reducing agent selected from the group consisting of hydrazine and hydrazine hydrates, and (3) a metal ion activator, wherein a hydroxylamine is added to the latex of the low molecular weight, functionalized, unsaturated elastomer or to the latex of the hydrogenated, low molecular weight, functionalized elastomer prior, during, or subsequent to the hydrogenation to produce the latex of the hydrogenated low molecular weight, low gel, functionalized elastomer. This process can be used to make low molecular weight, hydrogenated, nitrile rubber latex which is comprised of water, an emulsifier, and the low molecular weight, hydrogenated, nitrile rubber, wherein the low molecular weight, hydrogenated, nitrile rubber has a molecular weight which is within the range of 500 to 20,000, wherein the low molecular weight, hydrogenated, nitrile rubber has a gel content of less than 10%, and wherein the low molecular weight, hydrogenated, nitrile rubber has a saturation level of at least about 80%. | 11-06-2008 |
20090023850 | Self-Priming Color Foundation Finishes - Paint systems, in accordance with exemplary embodiments, of the present invention include a foundation base component and a top coat component. The foundation base component is tinted to match the top coat component to provide both the desired amount of hiding of colors or markings on the substrate to which the paint system is applied, and to enhance the brightness and hue of the color of the paint system. Furthermore, in another innovative aspect of the present invention, the foundation base component comprises at least one low molecular weight polymer that undergoes self-crosslinking at ambient conditions during and after paint drying. The low molecular weight polymer penetrates various substrates, including chalky surfaces, to provide improved adhesion. Moreover, because the low molecular weight polymer is self-crosslinking at ambient conditions, the polymer enhances the performance of dried paints, including improving mechanical strength, tannin block properties, and weatherability. | 01-22-2009 |
20090043035 | Polyvinyl Ester Dispersions, Process for Preparation Thereof and Use Thereof - What are described are polyvinyl ester dispersions which are prepared in a multistage process and have a low content of polymerized acids or acid anhydrides. They can be obtained by a multistage process in which a polyvinyl ester dispersion is obtained in a first stage, monomers in dissolved or pure form are added to the reaction mixture in a second stage and then the polymerization is started again. The polymer dispersions obtained in this way are notable for a low coagulum content and for increased tensile strengths of the films formed therefrom. | 02-12-2009 |
20090043036 | CAPSULATED COLORANT, METHOD OF PREPARING THE SAME, AND INK COMPOSITION INCLUDING THE CAPSULATED COLORANT - A capsulated colorant including a colorant and a polymer resin which is coated on the colorant and has a cross-linked structure, a method of preparing the capsulated colorant, and an ink composition including the capsulated colorant. By adjusting the extent of cross-linking of the colorant on which the polymer having a cross-linked structure is coated, a capsulated colorant having a cross-linking of larger extent and a capsulated colorant having a cross-linking of smaller extent are obtained. By using an ink composition including the capsulated colorant having a larger cross-linked extent, characteristics of excellent waterfastness, lighffastness, rubfastness and optical density can be realized. In addition, by using the ink composition including the capsulated colorant having a smaller cross-linked extent, images with excellent durability and printed gloss can be realized. | 02-12-2009 |
20090111929 | CONTACT ADHESIVE CONTAINING 2-ETHYLHEXYLACRYLATE AND HYDROXYBUTYL(METH) ACRYLATE - A pressure-sensitive adhesive comprising an aqueous polymer dispersion prepared by emulsion polymerization, wherein the polymer comprises 2-ethylhexyl (meth)acrylate and hydroxybutyl (meth)acrylate. | 04-30-2009 |
20090264576 | BUILDING EXTERIOR WALL-COATING EMULSION COMPOSITIONS AND BUILDING EXTERIOR WALLS - An emulsion composition for building exterior walls is provided comprising in admixture, [A] a graft copolymerized emulsion obtained by adding to (1) an oil-in-water type emulsion containing at least one organopolysiloxane having an organic group containing a radical reactive group or SH group, (2) a monomer or monomeric mixture containing at least 70 wt % of at least one monomer selected from acrylic and methacrylic monomers and effecting emulsion graft polymerization of component (2) to the organopolysiloxane, and [B] a silicone resin-containing emulsion. The emulsion composition is capable of forming an elastic, flexible coating which is endowed with water resistance, weather resistance, water repellency, adhesion and heat resistance and maintains these properties over a long period of time. It can thus be used as a base in a variety of paints and coating agents. | 10-22-2009 |
20090318605 | POLYMER ADDITIVES CONTAINING PARTICLES - Particles which can be obtained by aqueous emulsion polymerization of ethylenically unsaturated monomers M in the presence of polymer additives and of seed latexes, in which the monomers M comprise largely water-insoluble monomers M1 and optionally at least partially water-soluble monomers M2, and the polymer additives are essentially water-insoluble and are soluble in the monomers M1 and cannot be polymerized under conditions for the preparation of the particles, and the particles exhibit a mean particle size of at most 500 nm. | 12-24-2009 |
20100204382 | AQUEOUS POLYMER DISPERSIONS BASED ON COPOLYMERS FORMED FROM VINYLAROMATICS AND CONJUGATED ALIPHATIC DIENES, PROCESSES FOR PREPARATION THEREOF AND USE THEREOF - Aqueous polymer dispersions based on copolymers of vinyl aromatics and conjugated aliphatic dienes having a mean particle size of from 80 to 150 nm, obtainable by free radical emulsion copolymerization of
| 08-12-2010 |
20100286325 | LOW-VOC AQUEOUS HYBRID BINDERS - The present invention relates to aqueous binder compositions obtainable by emulsion polymerization of
| 11-11-2010 |
20110060090 | BINDER COMBINATIONS BASED ON POLYACRYLATE DISPERIONS - Aqueous polyacrylate dispersions comprising hydrophobic co-solvents are provided. The dispersions are prepared from copolymers P) which are comprised of I) a hydroxy-functional, hydrophobic polymer containing as structural monomers Ia) (meth)acrylic acid esters having from C | 03-10-2011 |
20110092630 | COPOLYMER LATEX AND METHOD FOR PRODUCING THE SAME - Disclosed is a copolymer latex obtained by emulsion polymerization of a monomer mixture containing (a) 30-70% by mass of a conjugated diene monomer, (b) 0.1-15% by mass of an ethylenically unsaturated carboxylic acid monomer and (c) 15-69.9% by mass of one or more other copolymerizable monomers. The copolymer latex is characterized in that the toluene in-soluble content in the dried product obtained by drying the copolymer latex is 95-100% by mass; the mass ratio of the toluene-swollen toluene insoluble content to the dried toluene insoluble content (the toluene swelling degree) is 3.0-6.5; the number average particle diameter of the copolymer latex is 180-400 nm; and the glass transition starting temperature of the dried copolymer latex is within the range from −70° C. to −20° C. and the glass transition ending temperature thereof is within the range from 10° C. to 100° C. in differential scanning calorimetry. | 04-21-2011 |
20110144258 | USE OF AQUEOUS HYBRID BINDERS FOR GLOSS PAINTS - The present invention relates to the use of aqueous hybrid binders for producing coating compositions, more particularly in high-gloss coating materials (high-gloss paints), and also to a process for their preparation with low residual monomer content. | 06-16-2011 |
20110245399 | Dispersion Of Hybrid Polyurethane With Olefin-Acrylic Copolymerization - A product and processes comprising urethane polymer and at least one copolymer from a hydrophobic ethylenically unsaturated C | 10-06-2011 |
20110301275 | Copolymer Containing Acid Building Blocks and Various Types of Polyether Building Blocks - The invention relates to a copolymer comprising
| 12-08-2011 |
20120088878 | AQUEOUS HYBRID DISPERSIONS - The invention relates to a process for the preparation of an aqueous hybrid polymer dispersion comprising an auto-oxidatively crosslinkable polymer and an addition polymer. The invention further relates to the aqueous hybrid polymer dispersion obtainable by said process, the use thereof for the manufacture of coating compositions, ink compositions or adhesives and to coating compositions includes the hybrid polymer dispersion as a binder. The process includes a first polymerization step wherein a first hybrid polymer dispersion is formed by addition polymerization of vinyl monomers in the presence of dispersed auto-oxidatively crosslinkable polymer and a second polymerization step wherein secondary polymerization loci are provided in the first hybrid polymer dispersion to polymerise residual vinyl monomer of the first polymerisation step. The aqueous hybrid polymer dispersions have very low residual vinyl monomer content by achieving a high if not full conversion of the vinyl monomers at the end of the polymerization. | 04-12-2012 |
20120116004 | BIOBASED WATERBORNE SYNTHETIC POLYURETHANE HYBRID LATEXES AND FILMS - This work provides a new way of utilizing renewable resources to prepare environmentally friendly biobased hybrid latexes with high performance for coating applications. Also provided are biobased polyurethane/acrylic hybrid films having good properties. | 05-10-2012 |
20130245185 | AQUEOUS HYBRID DISPERSIONS - The invention relates to a process for the preparation of an aqueous hybrid polymer dispersion comprising an auto-oxidatively crosslinkable polymer and an addition polymer. The invention further relates to the aqueous hybrid polymer dispersion obtainable by said process, the use thereof for the manufacture of coating compositions, ink compositions or adhesives and to coating compositions includes the hybrid polymer dispersion as a binder. The process includes a first polymerization step wherein a first hybrid polymer dispersion is formed by addition polymerization of vinyl monomers in the presence of dispersed auto-oxidatively crosslinkable polymer and a second polymerization step wherein secondary polymerization loci are provided in the first hybrid polymer dispersion to polymerise residual vinyl monomer of the first polymerisation step. The aqueous hybrid polymer dispersions have very low residual vinyl monomer content by achieving a high if not full conversion of the vinyl monomers at the end of the polymerization. | 09-19-2013 |
20140323635 | Ambient Self-Crosslinkable Latex - The present invention relates to storage stable film forming latex particles substantially free of adipic acid dihydrazide (ADH) that crosslink under ambient conditions during or after drying. Monomers for the formation of the crosslinkable moieties in the latex particles include diacetone acrylamide (DAAM) or the likes and methacrylamide (MAM) or the likes with or without styrene. A paint composition comprising the storage stable latex particles was described. | 10-30-2014 |
524458000 | Polymerizing in the presence of water and in the presence of a solid polymer derived from ethylenic reactants only | 43 |
20080221253 | Lipophilic Properties of 2-Acrylamido-2-Methylpropanesulfonic Acid - The lipophilic properties of an ethylenically unsaturated water-soluble polymerizable sulfonic acids are improved by forming a salt thereof with a lipophilic amine. Such salts are readily polymerized in an emulsion or solution process. | 09-11-2008 |
20080249226 | Waterborne coating compositions for optical-use polyester film - A water based coating composition containing | 10-09-2008 |
20090253850 | PRESSURE-SENSITIVE ADHESIVE SHEET AND PRODUCTION METHOD THEREOF - Provided is a PSA sheet with low toluene and total volatile organic compound (TVOC) emissions as well as low unpleasant odor level felt by users. The PSA sheet comprises a PSA layer formed of a PSA composition comprising an acrylic polymer emulsion and a tackifier resin emulsion; the toluene and TVOC emissions are at most 20 μg and at most 150 μg, respectively; in a sensory test, 90% of participants evaluate that the unpleasantness of odors emitted from the PSA sheet is less than that of toluene at a prescribed concentration. | 10-08-2009 |
20110196084 | AQUEOUS CROSSLINKABLE VINYL GRAFT COPOLYMER COMPOSITIONS - An aqueous composition comprising: A) a crosslinkable vinyl graft copolymer comprising 30 to 85 wt % of a polymeric backbone; and 70 to 15 wt % of at least one macromonomer grafted to the polymeric backbone, where the Tg of the macromonomer is in the range of from 15 to 140° C.; where the Tg of the polymeric backbone is ≦40° C.; where the vinyl graft copolymer comprises 0.6 to 10 wt % of at least one carbonyl functional vinyl monomer; where the polymeric backbone contains ≧75% of the carbonyl functional vinyl monomers in the vinyl graft copolymer; and B) a hydrazide functional compound; where the ratio of hydrazide functional groups to carbonyl functional groups in the vinyl graft copolymer is in the range of from 0.1 to 1.5; and where the composition comprises ≦50 wt % of organic co-solvent by weight of the vinyl graft copolymer. | 08-11-2011 |
20110207871 | AQUEOUS DISPERSIONS CONTAINING CRYSTALLISABLE BLOCK COPOLYMERS - An aqueous dispersion comprising a crystallisable vinyl block copolymer-polymer which comprises: i) a vinyl block copolymer comprising at least blocks [A] | 08-25-2011 |
20110224351 | METHOD FOR PRODUCING GRAFT COPOLYMER, GRAFT COPOLYMER OBTAINED BY THE METHOD, RUBBER COMPOSITION CONTAINING THE GRAFT COPOLYMER, AND TIRE - Provided are a method of producing a graft copolymer, the method involving subjecting a radically polymerizable monomer to living radical graft polymerization with a rubber component formed of a natural rubber and/or a synthetic diene-based rubber in an aqueous medium in the presence of a polymerization control agent, a rubber composition containing the graft copolymer obtained by the method, and a tire obtained by using the rubber composition in any one of its tire members. Further provided are a method of efficiently producing a graft copolymer, the method involving subjecting a radically polymerizable monomer, in particular, a functional group-containing radically polymerizable monomer to living radical graft polymerization with the natural rubber and/or the synthetic diene-based rubber, a rubber composition containing the graft copolymer obtained by the method and excellent in, for example, low heat generating property, wear resistance, and fracture characteristic, and a tire obtained by using the rubber composition in any one of its tire members and having the above-mentioned properties. | 09-15-2011 |
20110245400 | STIMULUS-RESPONSIVE POLYMERIC PARTICLES - A stimulus-responsive polymer particulate composition, comprising a first monomer, such as an aqueous microgel derived, for example, from N-isopropylacrylamide, may be rendered less susceptible to aggregation at high shear (e.g. at least as high as 10 | 10-06-2011 |
20120046407 | METHOD OF PREPARING STIMULUS-RESPONSIVE POLYMERIC PARTICLES - A method of making a polymeric compound, comprising discrete particles responsive to an external stimulus, that is resistant to aggregation in high-shear fields, which includes the addition of a polymerization initiator to a reaction mixture comprising a monomer corresponding to the polymeric compound, wherein the method comprises the portion-wise addition of aliquots of a cross-linking agent to the reaction mixture, wherein an aliquot of the cross-linking agent is added to the reaction mixture both before the addition of the polymerization initiator and after the polymerization has progressed substantially to completion. The polymer particles are largely immune to the effects of transient shear rates at least as high as 10 | 02-23-2012 |
20130046050 | HYBRID PARTICLES MADE OF POLYMERS AND NANOPARTICLES - Subject of the invention is a hybrid particle comprising at least two vinyl polymers (vinyl polymers A and B), wherein vinyl polymer A comprises colloidal SiO | 02-21-2013 |
20140114006 | NEW REACTIVE SURFACTANTS FOR FREEZE-THAW STABLE EMULSION POLYMERS AND COATINGS THEREOF - The invention provides aqueous coating composition having freeze thaw stability, comprising: (a) at least one latex polymer derived from at least one monomer and at least one reactive surfactant of the formula | 04-24-2014 |
20140316049 | AMPHIPHILIC MACROMOLECULAR EMULSIFIER WITH SWITCHABLE SURFACE ACTIVITY AND USE THEREOF IN PREPARATION OF POLYMER LATEX - A macromolecular emulsifier with switchable surface activity, and use thereof for preparation of polymer latex is disclosed. By using the macromolecular emulsifier with switchable surface activity as an emulsifier, a reversibly coagulable and re-dispersible polymer latex can be prepared by emulsion polymerization. The polymer latex can achieve the coagulation of latex particles by heating and aerating with nitrogen, air, inert gas and/or adding a small amount of alkali solution; the coagulated latex particles can be restored and re-dispersed into stable latex by aerating with carbon dioxide and/or adding a small amount of acid solution. The coagulation and re-dispersion process is reversible and is easy to control. | 10-23-2014 |
20160102195 | VINYL ACETATE-ETHYLENE / ACRYLIC POLYMER EMULSIONS AND PRODUCTS AND METHODS RELATING THERETO - Methods of producing hybrid polymer emulsions by incorporating a vinyl acetate-ethylene copolymer dispersion as the seed for subsequent polymerization of an acrylic and/or methacrylic monomer mixture are described. In certain embodiments, new particle formation is observed. Also described are the resulting polymeric products. And hybrid polymer emulsions formed from the methods with pressure sensitive adhesion performance are also described. | 04-14-2016 |
20180022836 | WATER DISPERSION OF GEL PARTICLES, PRODUCING METHOD THEREOF, AND IMAGE FORMING METHOD | 01-25-2018 |
524459000 | Solid polymer utilized contains vinyl alcohol units | 3 |
20080242790 | Aqueous Polymer Dispersions Containing Amphiphilic Block Copolymers, Method for Producing Said Dispersions and the Use Thereof - The invention relates to aqueous polymer dispersions, obtained by the emulsion polymerisation of ethylenically unsaturated monomers in an aqueous medium in the presence of polymerisation initiators and stabilisers that form radicals. According to the invention, amphiphilic polymers are used as stabilisers prior to, during or after polymerisation, said polymers containing one or more hydrophobic units (A) and one or more hydrophilic units (B), the hydrophobic units (A) being formed from a polyisobutene block, wherein at least 50 mol % of the polyisobutene macro-molecules have terminal double bonds. The invention also relates to a method for producing the aqueous polymer dispersions by the polymerisation of ethylenically unsaturated monomers in the presence of initiators that form radicals and the aforementioned amphiphilic polymers, which are used prior to, during or after polymerisation. The invention further relates to the use of the aqueous polymer dispersions that are obtained in this manner as associative thickeners in coating slip for paper, in the production of textiles, as thickening agents for textile printing pastes, in the pharmaceutical and cosmetic industry, for paints, for detergents and cleaning agents, in foodstuffs and as oilfield chemicals. | 10-02-2008 |
20090076211 | COPOLYMER SURFACTANTS - The present invention relates to hyperbranched copolymers and compositions in which they are incorporated, e.g., colorant compositions, tint bases, and coatings such as latex paint, and methods for making such copolymers and compositions. | 03-19-2009 |
20120329936 | NOVEL COATING COMPOSITION - The present invention relates to a novel resin composition useful as a coating agent or a binder for medicines, drugs for animals, agricultural chemicals, fertilizers, foods or the like, which contains a polyvinyl alcohol copolymer as a main component. More particularly, the present invention relates to a resin composition, characterized in that the composition is obtained by copolymerizing a polyvinyl alcohol having an average polymerization degree of 1300 or less, and at least one polymerizable vinyl monomer in a weight ratio of 6:4 to 9:1. | 12-27-2012 |
524460000 | Solid polymer utilized is derived from an unsaturated carboxylic acid or salt | 27 |
20080207816 | Adhesive Composition For the Manufacturing of Corrugated Paper Board - An adhesive composition comprising an amount of an adhesive, and an amount of an additive which is selected from the group of homopolymers of acrylic acid, copolymers of acrylic acid and, polyacrylates, polyurethanes, cellulose thickening agent, natural or synthetic gum, natural or synthetic resin, silica or an inorganic mineral having a layered structure. | 08-28-2008 |
20090239989 | PROCESS FOR THE PREPARATION OF LATICES BASED ON POLYCHLORO-PRENE AND USE THEREOF AS ADHESIVES - A process is described for the preparation of latices based on polychloroprene, comprising the polymerization of chloroprene in the presence of a first latex essentially consisting of polymeric particles produced in a first polymerization of a composition of monomers comprising (a) alpha-, beta-unsaturated carboxylic acids and/or derivatives thereof, (b) vinyl aromatic compounds, (c) conjugated dienes; said first latex having a content of alpha-, beta-unsaturated carboxylic acids, expressed as parts of alpha-, beta-unsaturated carboxylic acids per 100 grams of polymeric particles, ranging from 1 to 15%, thus obtaining a final latex, the solid particles of said final latex having an quantity of chloroprene ranging from 50 to 95% by weight, preferably from 80 to 95% by weight. | 09-24-2009 |
20090326137 | Process to Disperse Organic Microparticles/Nanoparticles into Non-Aqueous Resin Medium - A process to disperse organic microparticles/nanoparticles into non-aqueous resin medium is provided. The process includes the steps of a) preparing a resin dispersion/emulsion in water and/or solvent where the resin contains unsaturation in the polymer chain and optionally comprises an ethylenically unsaturated monomer; b) curing the resin dispersion/emulsion by adding monomer and/or initiator; and c) adding the cured dispersion/emulsion during a synthesis step of a resin medium. The amount of organic microparticles/nanoparticles in the resin medium can be about 2 to about 30% by weight based on the total weight of the composition. | 12-31-2009 |
20090326138 | WATER-BASED COATING COMPOSITION - The invention relates to water-based coating compositions, comprising: | 12-31-2009 |
20100010143 | PROCESS FOR PREPARING AN AQUEOUS POLYMER COMPOSITION USING WATER-SOLUBLE FREE RADICAL CHAIN REGULATORS - Process for preparing an aqueous polymer composition using water-soluble free radical chain regulators. | 01-14-2010 |
20100016493 | Pressure Sensitive Adhesives - PSAs having enhanced resistance to water-whitening and high shear stability are disclosed. The PSAs are obtained from an aqueous dispersion comprising an effective amount of surfactant mixture comprising at least one ionic surfactant comprising a plurality, preferably at least three, aromatic rings, at least one electronegative substituent selected from a mono valent oxy substituted sulfo anion, and/or a mono valent oxy substituted phospho anion, and at least one substituent comprising one or more repeating alkoxy units (e.g. Soprophor 4D 384), and at least one non-ionic surfactant (e.g. Abex 2535) and a further non aromatic ionic surfactant (e.g. Aerosol OT 75); and a monomer composition comprising: at least one hydrophobic monomer (Component I), at least one hydrophilic monomer (Component II) at least one partially hydrophilic monomer (Component III) and optionally at least one a ureido monomer (e.g. Norsocryl 102) (Component IV). The dispersion has an average particle size of from about 100 nm to about 400 nm and a pH of from about 5.5 to about 9.0. The latex forms PSAs which have good water whitening resistance and is sufficiently stable under high shear to be curtain coatable. | 01-21-2010 |
20110077342 | METHOD FOR THE MULTI-STEP PREPARATION OF HALOGEN-CONTAINING COMPOSITE LATEX HAVING ASSOCIATIVE GROUPS - “The invention relates to a method for preparing a composite latex, including | 03-31-2011 |
20110152433 | PROCESS FOR THE PREPARATION OF NANOPARTICULATE ZINC OXIDE - The present invention relates to a process for the preparation of nanoparticulate zinc oxide in the form of aqueous suspensions or in the form of pulverulent solid. Furthermore, the invention relates to the use of zinc oxide particles and suspensions prepared in this way in cosmetic sunscreen preparations, as stabilizer in plastics, in paints, in coatings and as antimicrobial active ingredient. | 06-23-2011 |
20110166282 | METHOD FOR PREPARING A POLYMER PARTICLE DISPERSION IN AN AQUEOUS MEDIUM - The invention relates to a process for the preparation of an aqueous dispersion of polymer particles in an aqueous medium employing a living macroinitiator requiring a reinitiation temperature of less than 100° C. | 07-07-2011 |
20110224352 | RESIN EMULSION FOR SEALER - A resin composition for sealers as well as a resin composition for sealers and a paint composition for sealers that contains the resin composition for sealers are useful for sealers to be used with such inorganic building materials as ceramic-based building materials. The resin emulsion for sealers is a resin emulsion which contains emulsion particles having an inner layer and an outer layer. The inner layer is formed with a polymer which is formulated by means of emulsion polymerization of a monomer component containing styrene and a monomer other than the styrene, and the outer layer is formed with a polymer which is formulated by means of emulsion polymerization of a monomer component containing a carboxyl-group-containing monomer and a monomer other than the carboxyl-group-containing monomer. | 09-15-2011 |
20110245401 | POLYMER DISPERSIONS FOR CORROSION CONTROL - The present invention relates to coating compositions which comprise dispersions of polymers obtained by a multistage procedure, to processes for preparing them, and to their use in corrosion protection. | 10-06-2011 |
20110251329 | METHOD FOR PREPARING pH-INSENSITIVE SURFACTANT FREE POLYMER PARTICLE DISPERSION IN AQUEOUS MEDIUM - The invention provides a polymer particle dispersion in an aqueous medium and a method of making the same, which comprises an emulsion polymerized polymer and a macroinitiator covalently bonded to the emulsion polymerized polymer. The living macroinitiator comprises a hydrophilic, pH-insensitive monomer in reacted form. The polymer particle dispersion may be obtained by reacting at least one monomer with the living macroinitiator and without a surfactant to effect polymerization of the monomer(s). The emulsion polymerized polymer may be comprised of at least one additional ethylenically unsaturated monomer in polymerized form. | 10-13-2011 |
20110313093 | Microdomained Emulsion Polymers - A microdomained aqueous emulsion polymer is provided. The polymer comprises a first domain having a Tg of from −80 to −10° C. and comprising from 80 to 100 wt % of acrylic monomer; and a non-crosslinked second domain having a Tg of from 50 to 120° C. and comprising, as polymerized unit and based on the weight of the second domain, from 50 to 100 wt % of styrenic monomer; wherein the content of the second domain ranges from greater than 6 wt % to 30 wt % of the total weight of the first domain and the second domain. The polymer is suitable for applications including adhesives and binders, especially for pressure sensitive adhesives. | 12-22-2011 |
20120022203 | PROCESS FOR PREPARING A POLYMER DISPERSION AND A POLYMER DISPERSION - The present invention relates to a process for preparing a polymer dispersion comprising polymerising one or more water soluble anionic monomers (m | 01-26-2012 |
20120083563 | FINE-PARTICLE, CATIONIC, AQUEOUS POLYMER DISPERSIONS, METHOD FOR THE PRODUCTION THEREOF, AND USE THEREOF - Finely divided, cationic, aqueous polymer dispersions which are obtainable by emulsion polymerization of ethylenically unsaturated monomers in an aqueous solution of a cationic prepolymer as a dispersant, wherein first the cationic prepolymer is prepared in the presence of polymerization initiators by polymerization of
| 04-05-2012 |
20120214930 | ANIONIC CROSS-LINKED POLYMERS IN WATER-IN-WATER POLYMER DISPERSIONS - The present invention relates to water-in-water polymer dispersions containing cross-linked anionic polymers, methods for their preparation and their use. The water-in-water polymer dispersions are useful inter alia as flocculants, dewatering (drainage) aids and retention aids in papermaking. | 08-23-2012 |
20120302690 | GRAFTED ACRYLIC COMPRISING WATER SOLUBLE AND WATER INSOLUBLE PORTIONS AND LATTICES AND COATINGS COMPRISING THE SAME - A latex comprising of two stage grafted acrylic is disclosed. The acrylic comprises a water soluble portion and a water insoluble portion that are grafted together. A method for making the latex, a coating comprising the latex, and substrates coated with the coating are also disclosed. | 11-29-2012 |
20130066005 | SOLUBLE SHELL POLYMER COMPOSITION AND METHOD FOR ITS PREPARATION - The present invention relates to a soluble shell polymer composition comprising an alkali soluble emulsion polymer shell and an alkali insoluble emulsion polymer core, which composition is stabilized by a surfactant of the formula R—(OCH | 03-14-2013 |
20130274402 | METHOD FOR PREPARING A LATEX FROM A CHLORINATED VINYLIC POLYMER - Process for preparing a seed latex of a methyl methacrylate polymer (PMMA) by radical polymerization in aqueous emulsion of methyl methacrylate and optionally at least one comonomer. | 10-17-2013 |
20140024763 | PROCESS FOR PRODUCING PIGMENT-ENCAPSULATING RESIN DISPERSION AND INK JET INK - The invention provides a process for producing a pigment-encapsulating polymer dispersion, comprising the steps of dispersing a liquid containing a monomer, a hydrophobe and a polymerization initiator into a water medium with a dispersant to obtain a monomer emulsion, and mixing the monomer emulsion with a pigment dispersion containing a self-dispersible pigment to which a hydrophilic group is bonded directly or through another atomic group and which is dispersed by the hydrophilic group, subjecting the resultant mixture to a shearing treatment and then polymerizing the monomer. | 01-23-2014 |
20140080959 | PROCESS OF HEAT TREATING STRUCTURED POLYMER PARTICLES - A process comprising heating an aqueous dispersion of first structured polymer particles at a temperature of at least about 155° C., optionally in the presence of a base and/or a swelling agent, to produce an aqueous dispersion of heat treated structured polymer particles. | 03-20-2014 |
20140155535 | METHOD OF PREPARING ENCAPSULATED PIGMENT DISPERSIONS WITH MINIMAL FREE POLYMER - A process for encapsulating pigment dispersions is provided where a pigment is dispersed with a polymeric dispersant in an aqueous solvent system. The free polymer dispersant in the pigment dispersion is limited to less than 0.12 grams per gram of pigment. This dispersed pigment is then encapsulated by adding acrylate monomers and optionally acrylic and vinyl monomers and polymerizing. In the encapsulated pigment dispersion the weight ratio of final free polymer to polymer found to the final encapsulated pigment is less than 0.9. The free polymer dispersant is measured by a centrifugation method and the final free polymer is measured by a density gradient centrifugation method. Such encapsulated pigment dispersions may be used in inkjet inks and are stable to heat, aging test conditions, and solvent challenges. Prints from these inks have better durability. | 06-05-2014 |
20140275389 | NETWORK POLYMERS USEFUL FOR SUSPENDING PARTICLES - Polymer particles having an average diameter from 100 nm to 10 μm, where each particle comprises: (a) a core; and (b) lobes comprising at least 15 wt % polymerized residues of at least one C | 09-18-2014 |
20150099843 | AQUEOUS BINDER COMPOSITIONS - The present invention relates to aqueous binder compositions which are based on aqueous multistage polymer dispersions, to the uses of such binder compositions, and to coating compositions comprising them. The aqueous binder composition comprises: a) a polymer P in the form of an aqueous multistage polymer dispersion of dispersed polymer particles, where the polymer particles comprise a first polymer having a glass transition temperature of at least 30° C. and being made of ethylenically unsaturated monomers M-A, and a second polymer having a glass transition temperature of not more than 20° C. and being made of ethylenically unsaturated monomers M-B, where the ethylenically unsaturated monomers M-A and M-B together comprise: i. 85% to 99.45% by weight, preferably 87.5% to 97% by weight and in particular 90% to 95.5% by weight, based in each case on the total amount of monomers M-A+M-B, of at least one neutral, monoethylenically unsaturated monomer M1 having a solubility in water of at most 50 g/l at 25° C. and 1 bar; ii. 0.5% to 10% by weight, preferably 1% to 7.5% by weight and in particular 1.5% to 6.5% by weight, based in each case on the total amount of monomers M-A+M-B, of at least one neutral, monoethylenically unsaturated monomer M2 having a solubility in water of at least 100 g/l at 25° C. and 1 bar; iii. 0.05 to 0.5% by weight, preferably 0.15% to 0.5% by weight and in particular 0.3% to 0.5% by weight, based in each case on the total amount of monomers M-A+M-B, of one or more monoethylenically unsaturated monomers M3 having an acidic group; and iv. optionally from 0 to 5% by weight and in particular from 0 to 4.5% by weight, based in each case on the total amount of monomers M-A+M-B, of one or more monomers M4 having at least two non-conjugated ethylenically unsaturated double bonds; and b) at least one carbodiimide having at least two carbodiimide moieties, which are bound to an aliphatic carbon atom. | 04-09-2015 |
20150126667 | BLOCK COPOLYMER COMPRISING A BLOCK WITH GLASS TRANSITION TEMPERATURE HIGHER THAN 100.degree.C AND METHOD FOR PREPARING THE SAME - The present invention discloses a block copolymer comprising a block with glass transition temperature higher than 100° C. and a method for preparing the same. In the method, latex of a block copolymer is prepared by taking n-butyl acrylate as a soft block, random copolymer of styrene and γ-methyl-α-methylene-γ-butyrolactone as a hard block, utilizing emulsion polymerization system and reversible addition fragmentation chain transfer radical polymerization technology. The method utilizes an amphiphilic macromolecule reversible addition fragmentation chain transfer agent has dual function of both chain transfer agent and emulsifier, thus can achieve good control of monomer polymerization and avoid the use of traditional emulsifier; the reaction has no polymerization inhibition period, has fast reaction rate and high final conversion; colloidal particles can stably grow; product has a hard block with glass transition temperature up to 155° C., and thus has a good application prospect in the field of high heat resistance thermoplastic elastomer. | 05-07-2015 |
20160115310 | AQUEOUS POLYMER DISPERSIONS FOR ADHESIVES - The present invention relates to aqueous polymer dispersions having a polymer content of at least 55% by weight that are suitable for pressure sensitive adhesives. The invention also relates to a process for preparing these aqueous polymer dispersions and also to the use of the aqueous polymer dispersions in pressure sensitive adhesives and, respectively, pressure sensitive adhesive compositions, especially in pressure sensitive adhesives for transparent substrates, such as plastics labels. The aqueous polymer dispersions have a polymer content of at least 55% by weight, based on the total weight of the dispersion, the polymer being composed of ethylenically unsaturated monomers M and having a glass transition temperature below −10° C., in which the dispersed polymer particles have a polymodal particle size distribution, in which at least 70% by weight have a particle diameter of below 350 nm. | 04-28-2016 |
20190144702 | AMINE FUNCTIONAL ANIONIC POLYMER DISPERSION AND COATING COMPOSITIONS THEREOF | 05-16-2019 |
524461000 | Polymerizing in the presence of a solid polymer derived from ethylenic reactants only | 2 |
20090203827 | Method for preparing a latex from a chlorinated vinylic polymer - Process for preparing a seed latex of a methyl methacrylate polymer (PMMA) by radical polymerization in aqueous emulsion of methyl methacrylate and optionally at least one comonomer. | 08-13-2009 |
20100022697 | PROCESS FOR MICROENCAPSULATION OF PHASE CHANGE MATERIALS, MICROCAPSULES OBTAINED AND USES THEREOF - The invention relates to a process for microencapsulation of phase change materials based on free radicals polymerization comprising: a) the preparation of i) a solution with, at least, a hydrophilic liquid and a stabilizer (continuous phase) and ii) a solution with, at least, a phase change material, a free radical initiator and a polymerizable material (discontinuous phase); b) the preparation of an emulsion by dispersing the discontinuous phase in the continuous phase under vigorous stirring; and c) the polymerization of monomers until the phase change material becomes microencapsulated. This process is simple and effective and avoids the use of hazardous compounds. The invention also relates to microcapsules obtainable by said process and to the use thereof in the thermal protection and storage of heat. | 01-28-2010 |