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Class Information
Number: 528/279
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 > Polymerizing in the presence of a specified material other than reactant > Material contains a metal atom > Material contains a transition metal atom > Material contains a group ivb metal atom (ti, zr, hf)
Description: Subject matter wherein the specified material contains at least one Group IVB transition metal atom (i.e., Ti, Zn, Hf).










Patents under this class:
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Patent Number Title Of Patent Date Issued
8691934 Binder compositions and associated methods Apr. 8, 2014
8680229 Method for producing polyester Mar. 25, 2014
8653224 Resin composition for manufacturing thermoplastic polyester resin by using green catalyst Feb. 18, 2014
8653232 Manufacturing method of polyethylene terephthalate Feb. 18, 2014
8648166 Process for producing antimony-free PET polyester fiber excellent in no yellowish look Feb. 11, 2014
8648165 Polycarbonate resin composition Feb. 11, 2014
8618246 Manufacturing method of polyethylene terephthalate Dec. 31, 2013
8603631 Polyester binding compositions Dec. 10, 2013
8563650 Method for producing resin dispersions and resin particles Oct. 22, 2013
8552099 Polymeric materials and additives therefor Oct. 8, 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
8476183 Catalyst for polyester polycondensation and method for producing polyester resin using the same Jul. 2, 2013
8440782 Titanium-based catalyst showing excellent activity and selectivity in polycondensation reactions May. 14, 2013
8436131 Solid state polymerization process for polyester with phosphinic acid compounds May. 7, 2013
8431218 Poly (lactic acid) resin composition for preparing transparent and impact-resistant article, article prepared therefrom and preparation process thereof Apr. 30, 2013
8362189 Catalyst mixture and method for the production of polyesters with high viscosity Jan. 29, 2013
8313881 Polyester resin and toner including the same Nov. 20, 2012
8283437 Preparation of low-acid polyalkylene terephthalate and preparation of macrocyclic polyester oligomer therefrom Oct. 9, 2012
8258253 Solid state polymerization process for polyester with phosphinic acid compounds Sep. 4, 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
8247345 Polycondensation catalyst for producing polyester and method for producing the same and method for producing polyester Aug. 21, 2012
8207289 High molecular weight polyester polymers with reduced acetaldehyde Jun. 26, 2012
8148489 Thermoplastic resins containing PBT units, having reduced organic carbon emissions Apr. 3, 2012
8143356 Polyester resin composition, process for producing the same and molding thereof Mar. 27, 2012
8143367 Method for the esterification of terephtalic acid with butanediol, method for the manufacture of polybutylene terephtalate and a device therefor Mar. 27, 2012
8138116 Titanium oxide composition and the application thereof on poly-esterification Mar. 20, 2012
8039416 Catalyst for polyester polycondensation and method for producing polyester resin using the same Oct. 18, 2011
8039417 Catalyst for polyester polycondensation and method for producing polyester resin using the same Oct. 18, 2011
8039577 Polyester polymer and copolymer compositions containing titanium nitride particles Oct. 18, 2011
8030435 Solid state polymerization process for polyester with phosphinic acid compounds Oct. 4, 2011
7956154 Polymers incorporating 1,3 and 1,4 cyclohexanedimethanol Jun. 7, 2011
7935737 Articles derived from compositions containing modified polybutylene terephthalate (PBT) random copolymers derived from polyethylene terephthalate (PET) May. 3, 2011
7923526 Sulfopolyesters having improved clarity in water-dispersible formulations and products made therefrom Apr. 12, 2011
7915374 Copolyesters having improved thermal stability and methods for making them Mar. 29, 2011
7902264 Polytrimethylene terephthalate (PTT) derived from polyethylene terephthalate (PET) and containing PET residues Mar. 8, 2011
7872092 Polyester resin sheet for photovoltaic batteries, laminate formed by using the same, photovoltaic battery backside protection sheet, and module Jan. 18, 2011
7833931 Solid acid catalyst for production of polyester, process for production of the catalyst, and process for production of polyester using the catalyst Nov. 16, 2010
7834128 Polymerization catalyst for polyester, method for producing it and process for producing polyester using it Nov. 16, 2010
7820781 Polymeric materials and additives therefor Oct. 26, 2010
7767781 Preparation of low-acid polyalkylene terephthalate and preparation of macrocyclic polyester oligomer therefrom Aug. 3, 2010
7759270 Titanium oxide sol and process for producing polyalkylene terephthalate therewith Jul. 20, 2010
7718754 Promoter for polycondensation reaction May. 18, 2010
7709593 Multiple feeds of catalyst metals to a polyester production process May. 4, 2010
7709594 Polyester resin compositions, catalyst for polyester production, polyester film, and magnetic recording medium May. 4, 2010
7709595 Non-precipitating alkali/alkaline earth metal and aluminum solutions made with polyhydroxyl ether solvents May. 4, 2010
7687593 Fluorinated polymer and polymer composition Mar. 30, 2010
7671169 Polycarbonate-polyester block copolymer compositions, methods, and articles Mar. 2, 2010
7579428 Process for preparation of polyesters without solid state polymerization Aug. 25, 2009
7557174 Carboxy-terminated oligomeric polyester compositions and method for making Jul. 7, 2009
7550531 Polymerization of macrocyclic polyester oligomers using metal amide and metal alkoxide catalysts Jun. 23, 2009

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