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Class Information
Number: 528/308
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 > Aryl-containing carboxylic acid or derivative of an aryl-containing dicarboxylic acid
Description: Subject matter wherein at least one reactant is an aryl-containing dicarboxylic acid or a derivative of an aryl-containing dicarboxylic acid.

Sub-classes under this class:

Class Number Class Name Patents
528/308.6 Contains terephthalic acid or substituted forms thereof 913
528/308.1 Polyethylene terephthalate per se 239

Patents under this class:

Patent Number Title Of Patent Date Issued
8691894 Preparation of polyamide block copolymers Apr. 8, 2014
8658285 Optically clear UV and hydrolysis resistant polyester film Feb. 25, 2014
8642715 Polyester film and method for producing same, backsheet for solar cell, and solar cell module Feb. 4, 2014
8632865 Heat-shrinkable polyester film Jan. 21, 2014
8629236 Polyester having renewable 1,3-propanediol Jan. 14, 2014
8629218 Curable film-forming compositions containing ortho-hydroxyl aromatic functional acrylic polymers Jan. 14, 2014
8623483 Copolyesters containing neopentyl glycol and 2,2,4,4-tetraalkyl 1,3-cyclobutanediol Jan. 7, 2014
8614280 Method for the continuous production of biodegradable polyesters Dec. 24, 2013
8604232 Method for producing monoamino-functionalised dialkylphosphinite acids esters and salts and use thereof Dec. 10, 2013
8603634 End-capped poly(ester amide) copolymers Dec. 10, 2013
8586183 Thermoplastic compositions, method of manufacture, and uses thereof Nov. 19, 2013
8568841 Thermo-shrinkable polyester film Oct. 29, 2013
8541109 Biodegradable polyester, preparation process thereof and products comprising said polyester Sep. 24, 2013
8536299 Rigid-rod copolymer compositions and the polymeric fibers fabricated from those compositions for enhanced flame resistance Sep. 17, 2013
8530045 Brittle polymeric film and tamper evident labels made therefrom Sep. 10, 2013
8524837 Heat-curing powder-lacquer compositions yielding a matte surface after curing of the coating, as well as a simple method for production of same Sep. 3, 2013
8518551 Biaxially oriented polyester film for automobile driving motors, and electrically insulating member therefrom Aug. 27, 2013
8512833 Heat-shrinkable polyester film Aug. 20, 2013
8512519 Sulfopolyesters for paper strength and process Aug. 20, 2013
8507057 Heat-shrinkable polyester film and preparation method thereof Aug. 13, 2013
8497343 Polyarylate compositions and articles therefrom Jul. 30, 2013
8465842 Biaxial oriented polyester film and a process for preparing the same Jun. 18, 2013
8431232 Aromatic-aliphatic polyester hot melt adhesives for roll-applied labels Apr. 30, 2013
8415011 Breathable, heat-sealable composite polymeric film Apr. 9, 2013
8414906 Additives and products including oligoesters Apr. 9, 2013
8404335 Laminated film and molded body Mar. 26, 2013
8324338 Oligomer removing agent for polyester-based fiber material Dec. 4, 2012
8324316 Unsaturated polyester resin compositions containing 2,2,2,4-tetramethyl-1,3-cyclobutanediol and articles made therefrom Dec. 4, 2012
8309217 Easy adhesion film Nov. 13, 2012
8287991 Using branched polymers to control the dimensional stability of articles in the lamination process Oct. 16, 2012
8263731 Optical film comprising birefringent naphthalate copolyester having branched or cyclic C4-C10 alkyl units Sep. 11, 2012
8252888 Process for continuous preparation of high molecular weight polyesters by esterification of dicarboxylic acids and/or transesterification of dicarboxylic acids with diols and/or mixtures there Aug. 28, 2012
8247527 Enhanced fine agglomerate mixture Aug. 21, 2012
8222347 Polyester-polycarbonate compositions Jul. 17, 2012
8202962 Integrated steam heating in polyester production process Jun. 19, 2012
8202591 Polyester resin, molded object thereof, and processes for producing these Jun. 19, 2012
8198397 Integrated steam heating in polyester production process Jun. 12, 2012
8168302 Modified copolyesters and improved multilayer reflective films May. 1, 2012
8143368 Disposable medical supplies from hydrolytically biodegradable plastics Mar. 27, 2012
8124242 Durable polyester coating Feb. 28, 2012
8110609 Copolyetheresters derived from polyethylene terephthalate Feb. 7, 2012
8110282 Laminated film and molded body Feb. 7, 2012
8097685 Dendritic polymer, method for producing the same, and thermoplastic resin composition Jan. 17, 2012
8063129 Compounds Nov. 22, 2011
RE42925 Polyester resin blends with high-level gas barrier properties Nov. 15, 2011
8044170 Highly functional, highly branched or hyperbranched polyesters, the production thereof and the use of the same Oct. 25, 2011
8039578 Polyester composition with modifier hydroxyl compound Oct. 18, 2011
8030417 Process for producing polyester-polycarbonate type thermoplastic polyester elastomer and polyester-polycarbonate type thermoplastic polyester elastomer Oct. 4, 2011
8022168 Spheroidal polyester polymer particles Sep. 20, 2011
8017717 Method of producing polyesters Sep. 13, 2011

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