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| Number | Title | Issue Date |
| 7868126 | Process for producing polyester, polyester produced using said process, and polyester molded product This invention provides a polyester and a polyester molded product, which, while maintaining color tone, transparency, and thermal stability, can realize a high polycondensation rate, are less likely to cause the production of polycondensation catalyst-derived undes... | 01/11/2011 |
| 7402630 | Curing compositions for fluoropolymers A curative composition comprising a cation and an anion of the formula Anq−Qpm+, wherein m, n, p, and q are positive integers, wherein m*p=n*q, wherein Qm+ is an organo onium, and Aq− is an anion,... | 07/22/2008 |
| 7241855 | Method for the manufacture of polyesters A method is described for the manufacture of polyesters of aromatic dicarboxylic acids with aliphatic and/or cycloaliphatic dials, in which an aromatic dicarboxylic acid in the presence of a monocarboxylic acid or a mixture of a monocarboxylic acid present in a satu... | 07/10/2007 |
| 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 |
| 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 |
| 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 |
| 7138480 | 3-Hydroxycarboxylic acid production and use in branched polymers This invention relates to a process for the preparation of a 3-hydroxycarboxylic acid from a 3-hydroxynitrile. More specifically, 3-hydroxyvaleronitrile is converted to 3-hydroxyvaleric acid in high yield at up to 100% conversion, using as an enzyme catalyst 1) nitr... | 11/21/2006 |
| 7129301 | Method for preparing a biodegradable copolyester A method for preparing a biodegradable copolyester includes: (a) optionally preparing an aromatic prepolymer by reacting a first aromatic dicarboxylic compound with a first aliphatic glycol; (b) reacting the aromatic prepolymer with a second aromatic dicarboxylic co... | 10/31/2006 |
| 7052765 | Method for manufacturing antibacterial polyester master batches and fibers both containing nano-silver particles A method for manufacturing antibacterial polyester master batches and fibers containing nano-silver particles, the method includes the acts of: mixing a reducing agent, glycol and a silver precursor together to compose a first mixture; esterifying terephthalic acid ... | 05/30/2006 |
| 7026434 | Polyester and process therefor A composition and a process for producing the composition are disclosed. The composition comprises (1) repeat units derived from a carbonyl compound and a glycol and (2) one or more ultrafine metal oxides. The process can comprise (1) contacting, in the presence of ... | 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 |
| 6953768 | Multi-component catalyst system for the polycondensation manufacture of polyesters This invention relates to new multi-component catalyst systems for the polycondensation of polyesters. More particularly, this invention pertains to novel multi-component, germanium based catalyst systems for the polycondensation of PET (polyethylene terephthalate) ... | 10/11/2005 |
| 6858701 | Wholly aromatic polyester carbonate and process therefor A wholly aromatic polyester carbonate having a good color and excellent heat resistant stability. This polymer had an extremely low alkali metal content of 10 ppm or less. This polymer is advantageously produced by reacting an aromatic dicarboxylic acid, aromatic di... | 02/22/2005 |
| 6852789 | Glycols starting materials containing dispersed superfine ceramic powder coagulates capable of forming polyester molded bodies having high mechanical strength and transparency Glycol starting materials for manufacturing a polyester molded body containing 1 to 20% by weight of dispersed superfine ceramic powder aggregates relative to the total weight of the glycol for enabling polyester molded bodies having a high mechanical strength and t... | 02/08/2005 |
| 6774204 | Polyester and process therefor A composition and a process for producing the composition are disclosed. The composition comprises (1) repeat units derived from a carbonyl compound and a glycol and (2) one or more ultrafine metal oxides. The process can comprise (1) contacting, in the presence of ... | 08/10/2004 |
| 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 |
| 6582818 | Polyesters having a controlled melting point and fibers formed therefrom The invention relates to fibers, particularly binder fibers, made from polyesters and the polyesters themselves. The polyesters are the product of a reaction between a glycol component and a dicarboxylic acid component where the glycol component contains ... | 06/24/2003 |
| 6437088 | Process for producing polyester with coated titanium dioxide A process for producing a polyester. The process comprises polymerizing a polymerization mixture comprising (i) a carbonyl compound or an oligomer of a carbonyl compound and (ii) a glycol, in the presence of a titanium catalyst composition, to produce the... | 08/20/2002 |
| 6417320 | Catalyst and method for its production and use The production of linear polyester by the interchange of ester radicals or esterification and polycondensation of multivalent alcohols with multivalent carboxylic acids takes place by means of catalysts. In order that the catalyst features the lowest poss... | 07/09/2002 |
| 6346070 | Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester The present invention provides a catalyst for polyester production capable of producing a polyester with high catalytic activity and a process for producing a polyester using the catalyst. The catalyst for polyester production comprises a solid titanium c... | 02/12/2002 |
| 6316584 | Method for producing polyesters and copolyesters For the production of polyesters and copolyesters, coprecipitates are used individually or in a mixture as polycondensation catalysts, the coprecipitates being prepared by simultaneous hydrolytic precipitation of a titanium compound and a metallic compoun... | 11/13/2001 |
| 6245879 | Purification of 1,3-propanediol in carbonyl-containing stream A process for preparing polytrimethylene terephthalate in which a carbonyl-containing 1,3-propanediol stream is purified for reuse of the 1,3-propanediol. The process involves reacting, under condensation polymerization conditions, terephthalic acid and a... | 06/12/2001 |
| 6156867 | Polyester polymerization catalyst, a production method thereof, and a polyester production method using said catalyst The present invention relates to a polyester polymerization catalyst, comprising a solution containing an aluminum compound and an alkali compound, with water or an organic solvent or a mixture consisting of water and an organic solvent as the medium, a p... | 12/05/2000 |
| 6150429 | Polyester/vinyl dioxolane based coating compositions The present invention provides polyester/vinyl dioxolane based coating compositions containing no or essentially no volatile organic components. Oligomers for forming the coating compositions of the present invention are vinyl dioxolane end-capped polyest... | 11/21/2000 |
| 6114458 | Highly branched radial block copolymers A branched radial block copolymer including the reaction product of a dendritic macromolecular initiator, and one or more chain extending monomers.... | 09/05/2000 |
| 6080834 | Titanium-containing catalyst composition and processes therefor and therewith A catalyst composition is disclosed. The composition comprises a titanium compound, a complexing agent, a solvent, and optionally a cocatalyst. The cocatalyst can be a cobalt/aluminum catalyst, an antimony compound, or combinations thereof. Also disclosed... | 06/27/2000 |
| 6066714 | Titanium-containing catalyst composition and processes therefor and therewith A catalyst composition is disclosed. The composition comprises a titanium compound, a phosphorus compound, an amine, a solvent and optionally a cocatalyst in which the phosphorus compound has a formula selected from the group consisting of (R1 ... | 05/23/2000 |
| 6034202 | Polymerization catalysts for polyesters The invention provides non-antimony containing polymerization catalysts for the condensation of polyesters. The catalyst is in the form of a clear chlorine and/or bromine containing solution of a metal glycoxide and a metal glycolate having a pH in the ra... | 03/07/2000 |
| 5989697 | Copolyether amide and water vapor permeable film made therefrom Claimed is a copolyether amide having a melting point in the range of 180° to 260° C., incorporating at least 10 wt. % and not more than 30 wt. % of ethylene oxide groups, and composed of 30 to 60 wt. % of polyamide segments and 70 to 40 wt. % of segmen... | 11/23/1999 |
| 5990197 | Organic solvent based ink for invisible marking/identification An organic solvent based polyester ink formulation having a fluorescing compound therein is suitable for ink jet printing applications. The ink is useful for producing invisible printing/markings on the surface of a variety of materials for identification... | 11/23/1999 |
| 5811513 | Process for producing polyethylene naphthalate In the production of polyethylene naphthalate of the present invention, the esterification reaction between naphthalenedicarboxylic acid and ethylene glycol is conducted while causing water to be present in a reaction system from a start of reaction, in t... | 09/22/1998 |
| 5770659 | Process for making storage-stable epoxy-capped polyetherester resins Processes for making storage-stable epoxy-capped polyetherester resins are disclosed. In one process, a polyetherester resin is first made by inserting a carboxylic acid derivative into a polyether. Reacting the resin with a capping agent gives an interme... | 06/23/1998 |
| 5756032 | Process for the preparation of biaxially extended polyester film A biaxially extended polyester film comprising light calcium carbonate particles, spherical silica particles and γ- or δ-alumina particles or a mixture thereof treated with a silane coupling agent prepared by the inventive process possesses excellent su... | 05/26/1998 |
| 5756645 | Multidimensional polyesters The yield of fully substituted, multidimensional aromatic hubs in the condensation of hydroxyl and acid halide functionalities is improved by adding a thallium catalyst, such as thallium ethoxide (Tl-OC2 H5), in the solvent.... | 05/26/1998 |
| 5733969 | Zeolite catalyst for the polycondensation of polyester A zeolite polycondensation catalyst comprising an alkali- or alkaline earth metal aluminum silicate zeolite having an original water content of 12 to 30 weight % and a solubility, measured at 260° C., in an esterification mixture consisting essentially o... | 03/31/1998 |
| 5672676 | Polyesteramides with high heat deflection temperatures New polyesteramides having glass transition temperatures (Tg's) of up to 130° C. and heat deflection temperatures that are in the 100° C. to 110° C. range are disclosed. The new polyesteramides of this invention are made by sequential addition of ... | 09/30/1997 |
| 5668243 | Polyesters modified with 1,4-cyclohexanedimethanol having high clarity prepared utilizing an antimony containing catalyst/stabilizer system This invention relates to a polyester resin prepared by adding one or more dicarboxylic acid components to one or more glycol components containing 1,4-cyclohexanedimethanol equalling 100 mole %, the polyester resin having been prepared in the presence of... | 09/16/1997 |
| 5665151 | Method for making article with and detecting water based inks containing near infrared fluorophores The present invention provides inks which contain a near infrared fluorophoric compound incorporated into a water-dissipatible polyester backbone. The inks of the present invention are preferably colorless or "invisible" but could be made slightly colored... | 09/09/1997 |
| 5650481 | Polyesters modified with 1,4-cyclohexanedimethanol having high clarity prepared utilizing an antimony containing catalyst/stabilizer system This invention relates to a polyester resin prepared by adding one or more dicarboxylic acid components to one or more glycol components containing 1,4-cyclohexanedimethanol equalling 100 mole %, the polyester resin having been prepared in the presence of a ... | 07/22/1997 |
