Class / Patent application number | Description | Number of patent applications / Date published |
524832000 | Monomer is carboxylic acid or derivative | 27 |
20090143528 | Waterborne multistage polymer dispersion - The invention relates to a process for the manufacture of a waterborne multistage polymer dispersion that has ethylenically unsaturated functional groups for crosslinking. The process comprises the steps of;
| 06-04-2009 |
20090163655 | PRESSURE-SENSITIVE ADHESIVE WITH ENHANCED RESISTANCE TO WATER-WHITENING - A pressure-sensitive adhesive comprising an aqueous polymer dispersion prepared by emulsion polymerization, wherein the polymer comprises monomers containing a hydroxyl group or primary amino group (referred to below collectively for short as hydrophilic monomers) and the polymer is obtainable by supplying more than 70% by weight of the hydrophilic monomers only when the polymerization mixture (mixture present in the polymerization vessel and composed of monomers and polymer already formed) already comprises more than 50% by weight of the total amount of monomers. | 06-25-2009 |
20090221746 | Neutralization Process - The invention relates to a neutralization process in which at least one ethylenically unsaturated carboxylic acid is preneutralized at least partly with a base, wherein the preneutralized solution is divided into at least two part-solutions and at least one part-solution is aftertreated so as to form part-solutions with different degree of neutralization and/or solids content, and also to an apparatus for carrying out the process. | 09-03-2009 |
20090286933 | EMULSION FOR VIBRATING DAMPING MATERIALS - The present invention provides an emulsion for vibration damping materials which stably exhibits excellent vibration damping property in a wide temperature range and exhibits excellent mechanical stability and which can be preferably used in various applications where a coating vibration damping material is used. The emulsion for vibration damping materials of the present invention is an emulsion for vibration damping materials, including an emulsion obtainable by emulsion polymerization of a monomer component, wherein the emulsion has a storage modulus value of 5.0×10 | 11-19-2009 |
20100093930 | Polymer Composition and Process - There is described a multi step mini-emulsion process for preparing a hybrid acrylic/polyurethane pressure sensitive adhesive (PSA) of very high shear strength, good peel strength and/or also high moisture vapor transmission rate, the process comprising the steps of: a) forming a first aqueous mixture comprising a hydrophilic stabilizer; b) forming separately a second oil mixture comprising: i) at least one vinyl functional polyurethane (optionally prepared from an isocyanate functional monomer; at least one monol and/or at least one α,β-ethylenically unsaturated monomer ii) optionally at least one hydrocarbon polymer (such as polystyrene); and iii) at least one α,β-ethylenically unsaturated monomer (such as (meth)acrylate or acids thereof; and/or iv) option-=ally at least one hydrophobic stabilizer; where components (ii), (iii) and/or (iv) may optionally be the same; c) mixing the aqueous and oil mixtures together to form a pre-(macro) emulsion; d) generating a stable mini-emulsion there-from optionally by applying high shear to form an aqueous continuous phase and stabilized oil droplets of average diameter from about 10 to about 1000 nm, and e) polymerizing the polymer precursor(s) within the droplets, optionally in the presence of a free radical initiator; to obtain a polymer latex. | 04-15-2010 |
20100130681 | HYDRATE INHIBITED LATEX FLOW IMPROVER - A process in which a mixture is agitated in a substantially oxygen-free environment to produce an agitated emulsion. The mixture comprises water, one or more surfactants, a hydrate inhibitor, and a monomer. The monomer is then polymerized in the emulsion using an initiator and a catalyst to form a hydrate inhibited latex drag reducer. | 05-27-2010 |
20100249320 | Process for producing water-absorbing resin - Drying is performed in a continuous fluidized bed having at least two drying rooms. Drying is performed after pulverization is performed between drying in a first drying room and drying in a second or subsequent room. Drying is performed in a continuous fluidized bed whose fluidized bed contains a heat transfer tube. The second or subsequent drying room has a higher drying temperature than the first drying room. Drying is performed with the drying temperature of the first drying room falling within a range of not less than 80° C. to not more than 200° C. and with the drying temperature of the second or subsequent drying room falling within a range of not less than 100° C. to not more than 220° C. Further, a method for producing a water absorbent resin includes: a sequence of the steps of: (1) polymerizing a monomer aqueous solution; (2) drying a hydrogel polymer obtained in the step (1); (3) performing particle size control by either pulverizing or pulverizing and classifying a dry polymer obtained in the step (2); and (5) performing surface crosslinking on water absorbent resin powder whose particle size has been controlled in the step (3), the method further including the step (4) of performing second heat drying on the water absorbent resin powder whose particle size has been controlled in the step (3), the step (4) preceding the step (5). Further, the water absorbent resin has a moisture content (defined by a loss on drying performed for three hours at 180° C.) of 0 wt % to 3 wt % before it is supplied to the step (5). (This makes it possible to provide a method for producing a water absorbent resin which method makes it possible to obtain a particulate water absorbent resin of excellent properties at low cost with high productivity. | 09-30-2010 |
20100261840 | EMULSION POLYMERS, AQUEOUS DISPERSIONS AND METHOD FOR PRODUCING THE SAME - The present invention relates to an emulsion polymer comprising at least one (meth)acrylate segment which comprises
| 10-14-2010 |
20100331485 | COPOLYMERIZABLE SURFACTANTS (2) - The invention is directed to the use of maleic esters selected from compounds of formulae (I) and (II) as copolymerizable emulsifiers in the emulsion polymerization of olefinically unsaturated monomers, in which A is an alkyl group having 3 to 40 carbon atoms; X and Z independently are hydrogen or methyl; M is hydrogen, an alkali metal, alkaline earth metal, or an ammonium or other amine salt; and n and p independently are numbers in the range from 0 to 40. | 12-30-2010 |
20110021698 | HYDROPHOBIC COATINGS - The present disclosure provides embodiments of polymeric particles, aqueous coating compositions, coating compositions, processes of making polymeric particles hydrophobic coatings, processes for making hydrophobic synthetic latex compositions, processes of forming polymeric particle agglomerates for use in a hydrophobic coating, and process of making hydrophobic polymeric binders. In some embodiments, the polymeric particle includes a polymer having an elastic modulus greater than about 10 | 01-27-2011 |
20110040031 | INORGANIC NANOPARTICLES AND POLYMER COMPOSITE PRODUCED THEREFROM - The invention relates to metal oxide or semimetal oxide nanoparticles having an average particle size of from 2 to 250 nm, characterized in that the nanoparticles have at least two different, free-radically polymerizable groups on the surface. The invention further relates to nanocomposites produced from such nanoparticles and also processes for producing them. | 02-17-2011 |
20110152452 | EMULSION POLYMERIZATION PROCESS, POLYMER DISPERSION AND FILM-FORMING COMPOSITION - The present invention relates to a method to prepare a polymer dispersion using an aqueous substantially surfactant-free emulsion polymerization process comprising a seed and a feed stage, in which seed stage at least one ethylenically unsaturated monomer, having a water-solubility of at least 0.3 g/l at polymerization conditions, is polymerized in the presence of an addition fragmentation chain transfer agent and a hydrophilic free radical initiator to form a seed polymer that is substantially insoluble in water and in which feed stage at least one ethylenically unsaturated feed monomer is added to the seed polymer to form polymer particles. With this method a polymer dispersion can be obtained having at least 25 wt. % solid contents in combination with an average polymer particle size smaller than or equal to 300 nm. The invention further relates to a polymer dispersion obtainable by a surfactant-free emulsion polymerization process, a film-forming composition, preferably a coating composition, comprising such a polymer dispersion and coated articles coated with the coating composition. Further, the invention relates to a polymer particle powder obtained from the polymer dispersion and powder coating compositions. | 06-23-2011 |
20110263790 | PRESSURE-SENSITIVE ADHESIVE SHEET - A pressure-sensitive adhesive (PSA) sheet, in which offending odors from viable microorganisms have been suppressed to a level that cannot be detected by the senses, is provided. This PSA sheet has a PSA layer which contains as a base polymer an acrylic polymer. When PCR amplification of DNA extracted from the PSA layer is carried out with 16S rDNA as the target, and the fluorescence intensity is measured after, first, isolating the amplified 16S rDNA region by gel electrophoresis, then staining with SYBR Gold and irradiating with excitation light having a wavelength of 302 nm and an intensity of 500 μW/cm | 10-27-2011 |
20120214941 | PROCESS FOR PREPARING AQUEOUS POLYACRYLIC ACID SOLUTIONS - A process for preparing aqueous solutions of homo- or copolymers of acrylic acid by means of free-radical polymerization of acrylic acid and optionally water-soluble, monoethylenically unsaturated comonomers in an aqueous medium in the presence of at least one water-soluble initiator and of at least one water-soluble regulator, wherein the polymerization is conducted by means of a continuous process, and wherein, after the polymerization, low molecular weight components are at least partly removed from the resulting aqueous polymer solution. For the polymerization, preference is given to using microstructured mixers and reactors. Preference is given to using at least one reactor and/or mixer with microstructures for the process. | 08-23-2012 |
524833000 | Two or more carboxylic acids or derivatives | 13 |
20090171017 | CONTACT ADHESIVE CONTAINING N-BUTYLACRYLATE AND HYDROXYBUTYL(METH)ACRYLATE - A pressure-sensitive adhesive comprising an aqueous polymer dispersion prepared by emulsion polymerization, wherein the polymer comprises n-butyl(meth)acrylate and hydroxybutyl(meth)acrylate. | 07-02-2009 |
20100152380 | PROCESS FOR PREPARING AN AQUEOUS POLYMER DISPERSION - Process for preparing an aqueous polymer dispersion using alkenes of 5 to 12 carbon atoms. | 06-17-2010 |
20110172358 | FUNCTIONALIZED LATEX POLYMER AND METHOD OF FORMING THE SAME - A method for forming a functionalized latex polymer includes polymerizing a heterogeneous dispersion of water insoluble monomers in water, thereby forming a latex polymer. An at least partially water soluble halogenated non-ionic group is reacted with the latex polymer, whereby a halogen is displaced from the non-ionic group, thereby forming an at least partially water soluble non-ionic group that attaches to the latex polymer. | 07-14-2011 |
20120095163 | Polymerization method for acrylic latex without emulisifier - The present invention provides a polymerization method for acrylic latex without emulsifier, in which a reaction system is formed from 40˜60 wt % of pure water and 2˜9 wt % of carboxylic acid monomers with carbon-carbon double bond polymerizable functional groups (A), and 40˜50 wt % of methyl methacrylate or acrylate monomers (B), and 0.2˜2.0 wt % of inorganic alkaline solution is first used to adjust the pH value of the reaction system to within a pH range of 9.0˜13.0, then 0.2˜1.0 wt % of peroxide sulfates are used as initiators, and emulsification polymerization is carried out. At the end of the reaction, organic amine compounds are used to adjust the pH value of the obtained aqueous resin latex to within the pH range 7.0˜9.5. Particle diameters of the manufactured aqueous resin latex are approximately 100˜30 nm, uniformly distributed and have excellent outward appearance. Moreover, acid value is low at 3.5˜6.5 mgKOH/g, and Its specific gravity is approximately 1.07, slightly greater than that of water; storage stability is excellent, with good permeability that facilitates construction. Moreover, water resisting property as a dry film coating is good, tensile strength is excellent, and provides superior abrasion performance. | 04-19-2012 |
20130190448 | AQUEOUS POLYMER DISPERSIONS - An aqueous polymer composition is described comprising a homogeneous acrylic polymer dispersion produced by emulsion polymerization of a monomer mixture comprising: (A) from 85 to 99.9 wt % of one or more main monomers selected from C | 07-25-2013 |
20140011953 | Removable Composition with Polymer Microspheres - A composition comprising a suspension polymerization product of a mixture of monomers of ethyl hexyl acrylate (EHA) and ethyl methacrylate (EMA) is described. Further, a composition comprising a suspension polymerization product of polar monomers that can be copolymerized with at least one of (meth)acrylic acid esters of alcohols having 4-14 carbon atoms and (meth)acrylic acid esters of alcohols having 1-3 carbon atoms is described. | 01-09-2014 |
20150025193 | POLYMERIZATION OF COMPOSITIONS COMPRISING A FARNESENE - Provided herein are polyfarnesenes such as farnesene homopolymers derived from a farnesene and farnesene interpolymers derived from a farnesene and at least a vinyl monomer; and the processes of making and using the polyfarnesenes. The farnesene homopolymer can be prepared by polymerizing the farnesene in the presence of a catalyst. In some embodiments, the farnesene is prepared from a sugar by using a microorganism. | 01-22-2015 |
20150025194 | METHOD FOR CONTROLLING SIZE DISTRIBUTION OF POLYMER PARTICLES DURING PREPARATION OF AQUEOUS POLYMER DISPERSION AND AQUEOUS POLYMER DISPERSION - The present disclosure relates to a method for controlling size distribution of formed polymer particles during preparation of aqueous polymer dispersion. The method comprises obtaining an aqueous polysaccharide solution, which comprises about 10 to 40 weight-% polysaccharide containing a free hydroxyl group, such as starch, and polymerising in the polysaccharide solution in the presence of a graft-linking, water-soluble redox system about 30 to 60 weight-% of at least one optionally substituted styrene, about 60 to 30 weight-% of at least one C1-C4-alkyl(meth)acrylate, and 0 to about 10 weight-% of other ethylenically unsaturated copolymerizable monomers. The size distribution of the formed polymer particles is controlled by adjusting viscosity of the polysaccharide solution before the polymerisation to a level less than about 20 mPas. The present disclosure relates also to an aqueous polymer dispersion having the D(99) value less than about 160 nm for polymer particles in the polymer dispersion and its use. | 01-22-2015 |
20150291716 | SLUMP RETAINING POLYCARBOXYLIC ACID SUPERPLASTICIZER - A slump retaining polycarboxylic acid superplasticizer. A weight average molecular weight of the superplasticizer is 20,000-80,000. The slump retaining polycarboxylic acid superplasticizer is prepared by performing polymerization reaction on a monomer A, a monomer B, a monomer C and a monomer D in an aqueous solution in the presence of a redox initiator, wherein a molar ratio of (the monomer A+the monomer B):the monomer C:the monomer D is 1:(3-8):(4-12), and a molar ratio of the monomer A to the monomer B is 1:(1-4). | 10-15-2015 |
20150337127 | Thermoplastic Resin Powder and Method for Producing Same - The objective of the present invention is to provide a thermoplastic resin powder that suppresses a decrease in fluidity of a composition during melt molding and that has a suppressed alteration of the resin resulting from retention. The thermoplastic resin powder is obtained by coagulating a polymer from a latex produced by means of emulsion polymerization of a monomer, the content of metal-corroding free acids in the thermoplastic resin powder is no greater than 500 ppm, and the thermoplastic resin powder satisfies a predetermined formula (1). | 11-26-2015 |
20150353787 | WATER-DISPERSIBLE PRESSURE-SENSITIVE ADHESIVE COMPOSITION FOR TRANSPARENT CONDUCTIVE LAYER, PRESSURE-SENSITIVE ADHESIVE LAYER FOR TRANSPARENT CONDUCTIVE LAYER, PRESSURE-SENSITIVE ADHESIVE LAYER-ATTACHED OPTICAL FILM, AND LIQUID CRYSTAL DISPLAY DEVICE - It is an object of the invention to provide a water-dispersible pressure-sensitive adhesive composition that is suitable for use on a transparent conductive layer and capable of forming a pressure-sensitive adhesive layer effective in suppressing the corrosion of various adherends such as transparent conductive thin coatings, in particular, effective in suppressing the corrosion in a high-temperature environment and a high-temperature, high-humidity environment, and capable of providing good optical properties on a transparent conductive layer. The invention is a water-dispersible pressure-sensitive adhesive composition for a transparent conductive layer, the composition comprising: a (meth)acryl-based polymer obtained by polymerizing, in the presence of a surfactant, a monomer component comprising an alkyl(meth)acrylate having an alkyl group of 4 to 14 carbon atoms, wherein the surfactant is a reactive surfactant having three or less oxyalkylene repeating units and/or a reactive surfactant having no oxyalkylene repeating unit. | 12-10-2015 |
20160052858 | ALKYL ALPHA-HYDROXYMETHYL ACRYLATES AS REACTIVE SURFACTANTS IN EMULSION POLYMERIZATION - Polymers including α-hydroxymethylacrylate units and methods of preparing polymers from α-hydroxymethylacrylates are provided. Advantageously, α-hydroxymethylacrylates may be used in an emulsion polymerization and function as a polymerizable surfactant. The ability of the α-hydroxymethylacrylates to be used as a polymerizable surfactant allows for emulsion polymerization systems to be prepared without other surfactants. | 02-25-2016 |
20160108274 | Latex Polymerization Using A Combination of Reactive Surfactants for Traffic Markings - The present invention provides latex compositions using a combination of reactive surfactants wherein selected from the group consisting of: | 04-21-2016 |