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Class Information
Number: 528/272
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > From carboxylic acid or derivative thereof > From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof
Description: Subject matter involving a polymer derived (1) from one or more di- or higher esters of a polycarboxylic acid as the sole reactant or reactants, or (2) from at least a polycarboxylic acid or derivative thereof and at least a compound containing two or more hydroxyl groups or salts thereof.

Sub-classes under this class:

Class Number Class Name Patents
528/297 1,2-epoxy containing reactant 317
528/308 Aryl-containing carboxylic acid or derivative of an aryl-containing dicarboxylic acid 1,119
528/307 Cycloaliphatic ring-containing reactant (other than aryl) 529
528/306 Ethylenically unsaturated carboxylic acid or derivative of an ethylenically unsaturated carboxylic acid 393
528/298 Fused- or bridged-ring-containing reactant other than solely as cyclic acid anhydride group 558
528/299 Halogen-containing reactant other than solely as halogen atom bonded to a carbonyl group 190
528/288 Nitrogen-containing reactant 685
528/287 Phosphorus-containing reactant 228
528/295.3 Polycarboxylic acid reactant which is a dimer or trimer of an ethylenically unsaturated aliphatic monocarboxylic acid having at least ten carbon atoms; or adduct of said unsaturated monocarboxylic acid with an alpha, beta ethylenically unsaturated carboxylic acid or derivative 150
528/300 Polyhydroxy-containing compound or salt thereof having an ether-oxygen atom as reactant 544
528/274 Polymerizing in the presence of a specified material other than reactant 525
528/296 Reactant contains three or more carboxylic acid groups or is derivative thereof 458
528/295.5 Reactant which is a fatty acid glycerol ester, a fatty acid or salt derived from a naturally occurring glyceride, tall oil, or a fatty acid derived from tall oil 201
528/293 Sulfur-containing reactant 232
528/302 Two or more carboxylic acid or derivatives or mixtures thereof 1,266

Patents under this class:

Patent Number Title Of Patent Date Issued
8712655 Control system for shifting an automatic transmission Apr. 29, 2014
8710172 Biodegradable aliphatic-aromatic copolyester for use in nonwoven webs Apr. 29, 2014
8703011 Liquid crystalline polyester compositions Apr. 22, 2014
8691934 Binder compositions and associated methods Apr. 8, 2014
8691894 Preparation of polyamide block copolymers Apr. 8, 2014
8691203 Method comprising contacting tissue with a cross-linkable polyester prepolymer Apr. 8, 2014
8680229 Method for producing polyester Mar. 25, 2014
8680227 Manufacture of dihydroxy aromatic compounds by alcoholysis of polycarbonate-containing compositions Mar. 25, 2014
8673414 Heat-shrinkable polyester film, process for production thereof, and package Mar. 18, 2014
8653224 Resin composition for manufacturing thermoplastic polyester resin by using green catalyst Feb. 18, 2014
8648165 Polycarbonate resin composition Feb. 11, 2014
8642722 Preparation method of polybenzimidazole Feb. 4, 2014
8642715 Polyester film and method for producing same, backsheet for solar cell, and solar cell module Feb. 4, 2014
8637632 Method for producing binder resin, particulate resin dispersion and method for producing same, electrostatic image development toner and method for producing same, electrostatic image develope Jan. 28, 2014
8637631 Polyphenylene ether and method for producing the same Jan. 28, 2014
8633295 Blend of polylactic acid resin and copolyester resin, and molded product using same Jan. 21, 2014
8633294 Lactic acid-isosorbide copolyesters and process for the preparation thereof Jan. 21, 2014
8629236 Polyester having renewable 1,3-propanediol Jan. 14, 2014
8629235 Production method of polycarbonate Jan. 14, 2014
8629234 Process for synthesizing a new catalyst complex for the production of polyethylene terephthlate Jan. 14, 2014
8629218 Curable film-forming compositions containing ortho-hydroxyl aromatic functional acrylic polymers Jan. 14, 2014
8623991 IPA/polyester copolymer fiber Jan. 7, 2014
8623990 Polyester resin composition Jan. 7, 2014
8614287 Method for preparing polytrimethylene terephthalate with sustained-release crystallinity Dec. 24, 2013
8614286 Biomass derived radiation curable liquid coatings Dec. 24, 2013
8614280 Method for the continuous production of biodegradable polyesters Dec. 24, 2013
8613799 Dispersants Dec. 24, 2013
8609802 Production method for a wholly aromatic liquid crystalline polyester resin, a wholly aromatic liquid crystalline polyester resin produced by means of the method, and a compound of the wholly a Dec. 17, 2013
8609776 Unsaturated polyester-urethane prepolymer and its applications Dec. 17, 2013
8604156 Device and method for producing polybutylene succinate Dec. 10, 2013
8604139 Extrusion profile articles Dec. 10, 2013
8604138 Extrusion blow molded articles Dec. 10, 2013
8603631 Polyester binding compositions Dec. 10, 2013
8592530 Copolyester polyols, prepolymers, and polyurethane elastomers formed therefrom and processes for making same Nov. 26, 2013
8592528 Polymer, composition and film Nov. 26, 2013
8586701 Process for the preparation of copolyesters based on 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol Nov. 19, 2013
8586652 Polyester compositions for molding clear parts Nov. 19, 2013
8580912 Biodegradable nitric oxide generating polymers and related biomedical devices Nov. 12, 2013
8580898 Copolymer polyester resin and molded product using same Nov. 12, 2013
8574568 Reduced coenzyme Q10-containing composition comprising a surfactant which is stable against oxidation and method for stabilization by mixing with surfactant(s) Nov. 5, 2013
8563677 Non-precipitating alkali/alkaline earth metal and aluminum solutions made with diols having at least two primary hydroxyl groups Oct. 22, 2013
8563650 Method for producing resin dispersions and resin particles Oct. 22, 2013
8562861 Oxygen scavenging composition and article formed therefrom Oct. 22, 2013
8557951 Copolymer polyester resin and molded product using same Oct. 15, 2013
8557950 High intrinsic viscosity melt phase polyester polymers with acceptable acetaldehyde generation rates Oct. 15, 2013
8552139 Controlled release of biologically active compounds Oct. 8, 2013
8541538 Adsorbent for the removal of blood cells Sep. 24, 2013
8536299 Rigid-rod copolymer compositions and the polymeric fibers fabricated from those compositions for enhanced flame resistance Sep. 17, 2013
8530609 Process for removing metal species in the presence of hydrogen and a porous material and polyester polymer containing reduced amounts of metal species Sep. 10, 2013
8524855 Production of stable polyesters by microwave heating of carboxylic acid:polyol blends Sep. 3, 2013

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