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| Number | Title | Issue Date |
| 8148489 | Thermoplastic resins containing PBT units, having reduced organic carbon emissions A method for reducing organic carbon emissions from PBT-block-containing resins is disclosed. The method involves adding a titanium-catalyst deactivating compound to the resin after polymerisation. ... | 04/03/2012 |
| 7678878 | Process for producing polyester with metal phosphonic acid complex catalysts Disclosed is a method for the preparation of a polyester, which method comprises in a first step, reacting a dicarboxylic acid or a C1-C4 dicarboxylic diester with a diol at a suitable temperature and pressure to effect esterification or transe... | 03/16/2010 |
| 7514526 | Process for preparing a stabilized polyester The present invention discloses a process for the preparation of a stabilized polyester that is low in the generation of aldehydes which comprises reacting one or more diacids with one or more diols in an esterification process, and/or one or more diesters with one ... | 04/07/2009 |
| 7439317 | Amorphous polyester chip and method for production thereof, and method for storage of amorphous polyester chip An amorphous polyester chip having superior processing ability is characterized by a moisture content of not more than 300 ppm and a fine particle content of not more than 500 ppm. A preferred embodiment is a copolymerized polyester chip comprising a main repeating ... | 10/21/2008 |
| 7381787 | Polytrimethylene terephthalate having a low level of acrolein and a process for producing the same The present invention provides a process of reducing acrolein by product from polytrimethylene terephthalate using selected phosphorus compounds to contact the polytrimethylene terephthalate or reactants in the process of producing polytrimethylene terephthalate. Th... | 06/03/2008 |
| 7358328 | Method and device for increasing the intrinsic viscosity of polyester material by means of solid phase polymerisation The invention relates to a process and a device for increasing the intrinsic viscosity of a polyester material by solid-state polymerization, wherein the polyester material is heat-treated in a heat treatment container (6), the polyester material being introd... | 04/15/2008 |
| 7335318 | Method for manufacturing wholly aromatic liquid-crystalline polyester resin The present invention provides a method for manufacturing a wholly aromatic liquid-crystalline polyester resin comprising the steps of: 1) acylating the hydroxy group of major monomer components selected from the group consisting o... | 02/26/2008 |
| 7335719 | Polyester based on poly(trimethylene terephthalate) A polyester based on poly(trimethylene terephthalate) consisting essentially of trimethylene terephthalate repeating units, comprising at least one kind of compound selected from the group consisting of alkali metal compounds, alkaline earth metal compounds and mang... | 02/26/2008 |
| 7321014 | Transparent compositions, methods for the preparation thereof, and articles derived therefrom A thermoplastic composition is disclosed, comprising the reaction product of: a polyester polycarbonate comprising a polyester unit and a polycarbonate unit; a polysiloxane polycarbonate copolymer having a haze of 30% or less, comprising a polycarbonate unit and a p... | 01/22/2008 |
| 7288618 | Biodegradable thermoplastic polyesters Biodegradable aliphatic thermoplastic polyesters useful for the production of several types of articles such as films, sheets, nets, expanded molded products, and the like, and process for their production. ... | 10/30/2007 |
| 7282555 | Method for incorporating nitrogen containing methine light absorbers in pet and compositions thereof The present invention is a method for efficiently incorporating a nitrogen containing methine light absorber into a polyester resin. The method includes forming a reaction mixture comprising combining a diol component, a diacid component selected from the group cons... | 10/16/2007 |
| 7208565 | Polymerization catalyst for polyesters, polyester produced with the same, and process for production of polyester This invention provides a novel polycondensation catalyst using no antimony compound, polyester produced by using the same, and a process for producing polyester. A novel catalyst comprising an aluminum compound and a phosphorus compound is used as the polycondensat... | 04/24/2007 |
| 7205379 | Process for preparing a stabilized polyester The present invention discloses a process for the preparation of a stabilized polyester that is low in the generation of aldehydes which comprises reacting one or more diacids with one or more diols in an esterification process, and/or one or more diesters with one ... | 04/17/2007 |
| 7205357 | Polyester resin composition for toner A polyester resin composition for a toner comprising a titanium compound in an amount of from 0.005 to 4% by weight, and an inorganic phosphorus compound in an amount of from 0.001 to 5% by weight; a toner comprising the polyester resin composition as defined above;... | 04/17/2007 |
| 7199212 | Polymerization catalyst for polyesters, polyesters produced with the same and process for producing polyesters A novel polymerization catalyst for polyesters, which does not contain any germanium or antimony compound as the main component; polyesters produced with the catalyst; and a process for producing polyesters. This polymerization catalyst is excellent in catalytic act... | 04/03/2007 |
| 7196158 | Knitted/woven fabric of polyester fiber A knitted/woven fabric of polyester fibers is produced from a polyester polymer obtained by condensation-polymerizing an aromatic dicarboxylate in the presence of a catalyst which comprises a mixture of a titanium compound ingredient (A) comprising a titanium alkoxi... | 03/27/2007 |
| 7189797 | Process for producing poly(ethylene-aromatic dicarboxylate ester) resin and resin product A poly(ethylene aromatic dicarboxylate ester) resin usable for the production of fibers, films and bottle-formed articles, is produced by polycondensing a diester of an aromatic dicarboxylic acid with ethylene glycol by using a catalyst including a non-reacted mixtu... | 03/13/2007 |
| 7179869 | Process for producing polyester resins In the invention, a polyester resin having dicarboxylic acid constitutional units and diol constitutional units wherein 5 to 60 mol % of the diol constitutional units has a cyclic acetal skeleton is produced by a process including an oligomerization step and a polym... | 02/20/2007 |
| 7163977 | Method to reduce the aldehyde content of polymers Methods to decrease aldehyde content of a polymer are provided. An effective amount of an additive that contains a P—H functionality is incorporated into the polymer in the presence of an acidic of basic catalyst compositions are also provided. ... | 01/16/2007 |
| 7144614 | Polyester polymerization catalyst, polyester produced by using the same, and process for producing polyester This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of this invention is a polyester polymerization catalyst comprising an al... | 12/05/2006 |
| 7144974 | Polyester production method, polyester composition, and polyester fiber In a polyester production method, a titanium compound having a radical selected from a carbonyl group, a carboxyl group, or an ester group, and a phosphorous compound having a structure illustrated in Formula (I), are added | 12/05/2006 |
| 7129317 | Slow-crystallizing polyester resins The present invention relates to slow-crystallizing polyethylene terephthalate resins that possess a significantly higher heating crystallization exotherm peak temperature (TCH) as compared with those of conventional antimony-catalyzed polyethylene tereph... | 10/31/2006 |
| 7094357 | Compatibilizing agent, polyester polyol mixture containing the same, and hot-melt adhesive obtained from the mixture A compatibilizing agent is described for a mixture of (1) a polyester polyol containing units derived from at least one aliphatic dicarboxylic acid (A) having n carbon atoms (10≦n≦20) and at least one al... | 08/22/2006 |
| RE39246 | Esterification catalysts and processes therefor and therewith A catalyst composition is disclosed. The composition comprises a titanium compound, a complexing agent, hypophosphorous acid or its metal salt, water and optionally a solvent. The complexing agent can be hydroxycarboxylic acid, alkanolamines, aminocarboxylic acids, ... | 08/22/2006 |
| 7087299 | Polyester fibers and false twist-textured yarn comprising same Polyester fibers having an individual fiber thickness of 0.1 to 10 dtex are produced from a polyester polymer produced by polycondensing an aromatic dicarboxylate ester in the presence of a catalyst including a mixture of a Ti compound component (A) including at lea... | 08/08/2006 |
| 7057006 | Stable aqueous solutions comprising titanium and zinc and process therewith A composition that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a titanium α-hydroxycarboxylic acid or its salt, (b) a C1–C | 06/06/2006 |
| 7048995 | Polyester resin, molded product made thereof and process for production of polyester resin A polyester resin produced by polycondensing a dicarboxylic acid component containing an aromatic dicarboxylic acid or its ester-forming derivative as the main component and a diol component containing ethylene glycol as the main component in the presence of at leas... | 05/23/2006 |
| 7041350 | Polyester composition and articles with reduced acetaldehyde content and method using hydrogenation catalyst A polyester composition with reduced acetaldehyde concentration comprising polyester, at least one hydrogenation catalyst, and at least one source of reactive hydrogen. A method for making the polyester composition is also disclosed along with polyester articles mad... | 05/09/2006 |
| 7026035 | Laminated film for optical use There is provided a laminated film for optical use comprising a polyester film which has a lubricity layer containing globular particles in at least one side thereof, wherein the laminated film has a thickness irregularity of 0.5 to 7.0%, and wherein the polyester f... | 04/11/2006 |
| 6998462 | Polyester process Disclosed is a process that comprises contacting, in the presence of an esterification or transesterification or polycondensation catalyst composition, a toner, and a phosphorus compound, a carbonyl compound and an alcohol under a condition suitable for esterificati... | 02/14/2006 |
| 6855797 | Stable aqueous solutions comprising titanium and zinc and process therewith A process that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a titanium α-hydroxycarboxylic acid or its salt, (b) a C1-C6 | 02/15/2005 |
| 6787630 | Process for the preparation of heat-stable, antimony-free polyesters of neutral color and the products which can be prepared by this process Process for the preparation of heat-stable, antimony-free polyesters of neutral color and the products which can be prepared by this process A process for the preparation of heat-stable, antimony-free polyesters of neutral color by esterification of aromatic ... | 09/07/2004 |
| 6783827 | Method or decreasing the cyclic oligomer content in polyester product The present invention relates to a method for decreasing the cyclic oligomer content level in the manufacturing process of polyethylene terephthalate (PET) and in the PET products produced from said process by adding calcium phosphate at least one selected from the ... | 08/31/2004 |
| 6706852 | Partially ester-exchanged SIPM and process therewith A process for producing a partially ester-exchanged SIPM such as an alkali metal bis(2-hydroxyethyl) 5-sulfoisophthalate produced from an alkali metal dimethyl 5-sulfoisophthalate in an alcohol is disclosed. The partially ester-exchanged SIPM in an alcohol can be us... | 03/16/2004 |
| 6703474 | Polyester resin, molded product made thereof and process for production of polyester resin A polyester resin produced by polycondensing a dicarboxylic acid component containing an aromatic dicarboxylic acid or its ester-forming derivative as the main component and a diol component containing ethylene glycol as the main component in the presence... | 03/09/2004 |
| 6667383 | Polyester resin and process for its production A polyester resin is prepared by polycondensing a dicarboxylic acid component containing terephthalic acid or its ester-forming derivative as the main component, and a diol component containing ethylene glycol as the main component in the presence of (1) ... | 12/23/2003 |
| 6663961 | Process for preparation of polyester-based polymers This invention is related to a process for preparing polyester polymers using a composite catalyst comprises the steps of 1) esterifying naphthalene dicarboxylic acid or a dicarboxylic acids containing NDCA or ester derivatives thereof, with ethylene glyc... | 12/16/2003 |
| 6657036 | Polycondensation resins and polyaddition resins produced by heterogeneous catalysis The invention relates to polycondensation resins which are prepared by polycondensation of compounds having a low molecular weight and separation of small molecules in the presence of at least one hetergeneous catalyst. The invention also relates to polya... | 12/02/2003 |
| 6649731 | Catalysts for polyester production, process for producing polyester, and polyester By the present invention, there are provided a catalyst for polyester preparation, which comprises a solid titanium compound containing titanium, oxygen, carbon and hydrogen and having a Ti--O bond and which has a maximum solubility in ethylene glycol, as... | 11/18/2003 |
| 6639045 | Method of producing aliphatic polyester and product obtained thereby A method of producing an aliphatic polyester, including polycondensing an aliphatic diol and an aliphatic dicarboxylic acid compound, or a prepolymer thereof in the presence of a metal-containing ester interchange catalyst and a phosphorus-containing co-c... | 10/28/2003 |
