| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 525313000 | Ethylenic reactant contains at least two unsaturated groups and is devoid of an aromatic group | 19 |
| 20080234436 | Polyolefin Graft Copolymer, Composition and Method for Producing Same - The present invention provides a polyolefin graft copolymer which is produced by graft copolymerization of an olefin monomer and a macromonomer, which has good handleability and excellent dispersibility in a thermoplastic resin. In a composition including the polyolefin graft copolymer, excellent surface wettability is exhibited and the increase in elastic modulus is suppressed. The invention also provides a method for producing the polyolefin graft copolymer. Furthermore, the invention provides a composition containing the copolymer and a production method therefor. The polyolefin graft copolymer can be produced, in the presence of a coordination polymerization catalyst, by graft-copolymerizing an olefin monomer and a macromonomer having a multilayer structure in an aqueous system. | 09-25-2008 |
| 20120296046 | STAR HYDROCARBON POLYMER, PROCESS FOR MAKING, AND A POLYMER BLEND COMPOSITION HAVING SAME - Provided is a process for making a saturated star hydrocarbon polymer. The process has the following steps: (A) hydrosilylating tetraethylene silicon with methyldichlorosilane in the presence of a hydrosilylating catalyst to form a chlorosilane dendrimer; (B) reacting the chlorosilane dendrimer with vinylmagnesium bromide in the presence of a lithium and/or organolithium initiator stepwise to build a higher generation chlorosilane dendrimer; (C) anionically polymerizing polybutadiene in the presence of a lithium and/or organolithium initiator to form living poly(butadienyl)lithium; (D) attaching the living poly(butadienyl)lithium to the higher generation dendrimer to form a star polybutadiene; and (E) hydrogenating the star polybutadiene to form the saturated star hydrocarbon polymer. There is also provided a saturated star hydrocarbon polymer made according to the above process and a polymer composition of a matrix ethylene polymer and the saturated star hydrocarbon polymer. | 11-22-2012 |
| 20130190455 | POLYMER PARTICLES HAVING POLYMER BRUSH AND METHOD OF PREPARING THE SAME - The present invention provides a method of preparing a polymer particle. More precisely, the invention provides a polymer particle having optimum impact strength and improved elastic recovery rate by forming the brush having softness on the surface of the monodisperse polymer particle by the anion dispersion polymerization using a conjugated diene monomer. | 07-25-2013 |
| 20140058044 | POLYBUTADIENE GRAFTED ISOPRENE RUBBER, PROCESSES FOR PREPARING POLYBUTADIENE GRAFTED ISOPRENE RUBBER, MIXED COMPOSITIONS AND VULCANIZED FORMS THEREOF - Disclosed herein are polybutadiene grafted isoprene rubber, processes for preparing polybutadiene grafted isoprene rubber, mixed compositions and vulcanized forms thereof. | 02-27-2014 |
| 20140107297 | APPARATUS AND METHOD FOR PRODUCING THERMOPLASTIC ELASTOMER, ELASTOMERS PRODUCED THEREBY AND ARTICLES PRODUCED FROM THE ELASTOMERS - A method for producing thermoplastic elastomer is disclosed and comprises the step of: blending a mixture including particles of vulcanized rubber material and a molten thermoplastic material such that the rubber material is subjected to mechanical shearing forces and the surfaces of the rubber particles undergo homolytic bond scission to form chains of free radicals which cross-link with the thermoplastic material. Apparatus for carrying out the method, elastomers produced by the method and articles produced from the elastomers are also disclosed. | 04-17-2014 |
| 20140296442 | ANTIBACTERIAL POLYMERS AND METHOD FOR OBTAINING THE SAME - The invention relates to polymers selected from among polypropylene (PP), polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), polyvinylchloride (PVC) and polyethylene terephthalate (PET), nylon and polystyrene, having antibacterial properties, wherein the antibacterial effect is obtained by adding a zinc salt selected from among: zinc PCA, zinc oxide, zinc hydroxide, zinc pyrrolidone or zinc pyrithione during the process of polymerization of the monomers. The antibacterial polymers are used to prepare products intended to enter into contact with the skin. | 10-02-2014 |
| 20150299370 | METHOD FOR PRODUCING A POLYMER, POLYMER SOLUTION AND POLYMER - The present invention provides a method for producing a polymer by efficiently removing residue of metals such as titanium, aluminum and lithium from a polymer solution containing the residue of these metals to successfully obtain a purified polymer solution containing a smaller amount of the metal residue and having satisfactory color tone and transparency, a polymer solution and a polymer obtained by the production method. | 10-22-2015 |
| 525314000 | Block copolymer derived from reactant containing at least two unsaturated groups and is free of an aromatic group | 9 |
| 20100273952 | CONTROLLED POLYMERIZATION - The present invention discloses an emulsion polymerization process that comprises: (1) preparing an aqueous polymerization medium which is comprised of (a) at least one monomer, (b) a polymerization control agent, and an emulsifier, wherein the emulsifier is prepared in-situ within the aqueous polymerization medium; and (2) initiating polymerization of said monomer within the aqueous polymerization medium. The subject invention more specifically reveals an emulsion polymerization process that comprises: (1) preparing a monomer solution which is comprised of (a) at least one monomer, (b) a conjugate acid of a surfactant with a pK | 10-28-2010 |
| 20100286340 | MONOVINYLARENE CONJUGATED DIENE COPOLYMER COMPOSITIONS FOR ACRYLATE BLENDS - The present invention relates to monovinylarene-conjugated diene copolymer compositions adapted for blendability with acrylate polymers. In some embodiments, such compositions are provided that are particularly resistant to blocking when stored in pellet form. | 11-11-2010 |
| 20110092650 | Novel Block Copolymers and Method for Making Same - The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer. | 04-21-2011 |
| 20110136984 | PROCESS FOR BROMINATING UNSATURATED ORGANIC COMPOUNDS USING A QUATERNARY PHOSPHONIUM TRIBROMIDE AS THE BROMINATING AGENT - Compounds or polymers that contain carbon-carbon unsaturation are brominated using a quaternary phosphonium tribromide as the brominating agent. The bromination process proceeds easily under mild conditions. The process can be highly selective. When the substrate is a butadiene polymer or copolymer, the brominated product tends to have excellent thermal stability. | 06-09-2011 |
| 20110245430 | Hot Melt Adhesive - A hot melt adhesive is disclosed that contains 3-35% by weight of one or more styrene block copolymers, more than 25% and less than 60%, by weight, of triglycerides of fatty acids with an average carbon chain length distribution from C14 to C20 and a iodine value lower than 50; and 5-70% by weight of a tackifier or blend of tackifiers selected from terpenic tackifiers, rosin tackifiers and rosin ester tackifiers. This hot melt adhesive can be applied at low temperature and has very low tack when cold. | 10-06-2011 |
| 20120010370 | POLYFARNESENES - 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. | 01-12-2012 |
| 20120016088 | PROCESS FOR BROMINATING UNSATURATED ORGANIC COMPOUNDS WITH REMOVAL OF QUATERNARY AMMONIUM OR QUATERNARY PHOSPHONIUM MONOCHLORIDES - Unsaturated organic compounds are brominated with a quaternary ammonium tribromide or a quaternary phosphonium tribromide, especially when the bromination is conducted in a chlorinated solvent. A quaternary ammonium or quaternary phosphonium monobromide salt is produced in the reaction, together with some amount of quaternary ammonium or quaternary phosphonium monochloride salt. The monochloride salt is converted to the corresponding quaternary ammonium monobromide salt by reacting it with a source of bromide ions. The monobromide salt is then reacted with bromine to regenerate the quaternary ammonium or phosphonium tribromide, which is recycled into the bromination reaction. This process reduces the amount of chlorine that is incorporated into the brominated product. | 01-19-2012 |
| 20120165474 | POLYFARNESENES - Provided herein are polyfarnesenes derived from a farnesene and at least two different vinyl monomers. Also provided herein are polyfarnesenes derived from a farnesene; at least two different vinyl monomers, such as (meth)acrylic acid, (meth)acrylic esters, styrene, and substituted styrenes; and at least one functional comonomer such as maleic anhydride. | 06-28-2012 |
| 20130253141 | POLYMERS OF ISROPENE FROM RENEWABLE RESOURCES - It has been found that certain cells in culture can convert more than about 0.002 percent of the carbon available in the cell culture medium into isoprene. These cells have a heterologous nucleic acid that (i) encodes an isoprene synthase polypeptide and (ii) is operably linked to a promoter. The isoprene produced in such a cultured medium can then be recovered and polymerized into synthetic rubbers and other useful polymeric materials. The synthetic isoprene containing polymers of this invention offer the benefit of being verifiable as to being derived from non-petrochemical based resources. They can also be analytically distinguished from rubbers that come from natural sources. The present invention more specifically discloses a polyisoprene polymer which is comprised of repeat units that are derived from isoprene monomer, wherein the polyisoprene polymer has δ | 09-26-2013 |
| 525315000 | Ethylenic reactant reacted in the presence of a solid polymer substrate derived from reactant containing two unsaturated groups and is devoid of an aromatic group | 3 |
| 20120264886 | POLYPROPYLENE RESIN, POLYPROPYLENE RESIN COMPOSITION, AND FOAM-INJECTION-MOLDED ARTICLE - A polypropylene resin and a polypropylene resin composition are provided, which have excellent fluidity and foaming properties, and particularly in use for foam injection molding, allow molding with a narrow initial cavity clearance even if a large mold is used, and therefore can provide a thin, large-area foam-injection-molded article having good appearance. The invention relates to a polypropylene resin obtained by melt mixing a linear polypropylene resin, a radical polymerization initiator and a conjugated diene compound, wherein the polypropylene resin has a melt flow rate of more than 30 g/10 min and not more than 250 g/10 min as measured at 230° C. under a load of 2.16 kg; a melt tension at 200° C. of not less than 0.3 cN; and a loss tangent (tan δ) of not more than 6.0, the loss tangent being a ratio of loss modulus to storage modulus at an angular frequency of 1 rad/s in dynamic viscoelasticity measurement at 200° C., and also relates to a polypropylene resin composition for foam injection molding, containing the polypropylene resin. | 10-18-2012 |
| 525316000 | Ethylenic reactant is an aromatic hydrocarbon | 2 |
| 20110112255 | Single-Flighted Screw Elements With a Reduced Tip Angle - The invention relates to screw elements for multi-screw extruders with screws co-rotating in pairs and being fully self-wiping in pairs, to the use of the screw elements in multi-screw extruders and to a process for extruding plastic compositions. | 05-12-2011 |
| 20110166295 | IMPROVED MONOVINYLIDENE AROMATIC POLYMER COMPOSITIONS COMPRISING POLY-ALPHA-OLEFIN ADDITIVES - Compositions comprising (a) a rubber-modified monovinylidene aromatic polymer, e.g., HIPS, and (b) a specified poly-alpha-olefin (PAO), e.g., an oligomer of hexene, octene, decene, dodecene and/or tetradecene, that has a dynamic viscosity value of from about 40 to about 500 centipoise (cP) at 40° C., exhibit improved combinations of environmental stress crack resistance, impact resistance and heat resistance as compared to compositions without such a PAO. The compositions are useful in the manufacture of articles, e.g., refrigerator liners and food packaging, which come in contact with the oils contained in various food stuffs. | 07-07-2011 |
