公开(公告)号：US12071509B2

公开(公告)日：2024-08-27

申请号：US17427121

申请日：2020-01-27

申请人： IFP Energies Nouvelles

发明人： Olivier Thinon ,  Thierry Gauthier

IPC分类号： C08G63/80 ,  C08G63/183 ,  C08G63/85 ,  C08J11/24

CPC分类号： C08G63/183 ,  C08G63/80 ,  C08G63/85 ,  C08J11/24 ,  C08J2367/02

摘要： A process for the production of a terephthalate polyester, containing a stage a) for preparing an esterification feedstock containing at least one mixing section fed with at least one terephthalic acid feedstock and one diester monomer feedstock, where the ratio of the total number of moles of diol units with respect to the total number of moles of terephthalate units introduced into the mixing section is between 1.0 and 2.0, the mixing section being operated at a temperature between 25° C. and 250° C. and at a pressure greater than or equal to 0.1 MPa, an esterification stage b) to produce at least one reaction effluent and one aqueous effluent, a polycondensation stage c) to obtain at least the terephthalate polyester and an effluent containing at least one diol monomer, and a stage d) of treatment of the diols to obtain a purified diol stream.

公开(公告)号：US11970573B2

公开(公告)日：2024-04-30

申请号：US17227662

申请日：2019-11-13

申请人： ExxonMobil Chemical Patents Inc. ,  Virginia Tech Intellectual Properties, Inc.

发明人： Monica Lotz ,  S. Richard Turner ,  Hans Eliot Edling ,  Kapil Kandel ,  Michael Salciccioli ,  Stephen Cohn ,  Alan A. Galuska ,  Javier Guzman ,  Edward E. Paschke

IPC分类号： C08G63/193 ,  C08G63/80 ,  C08G63/85

CPC分类号： C08G63/193 ,  C08G63/80 ,  C08G63/85 ,  C08G2120/00

摘要： Bifuran-modified polyester, polyethylene-terephthalate-co (2,2′-bifuran-5,5′-dicarboxylate), prepared by esterifying or transesterifying a diacid component comprising from 2 to 10 mole percent 2,2′-bifuran-5,5′-dicarboxylate and a diol component with a catalyst compound comprising metal present in an amount of from about 10 to about 450 ppm and polycondensation to form the polyester wherein the polyester has an inherent viscosity of at least 0.5 g/dL, a glass transition temperature (Tg) of 82° C. or more, a semicrystalline melting peak (Tm) with ΔHf equal to or greater than 5 J/g on the second heating ramp, and melting temperature (Tm) between 229° C. and 246° C. Reinforced compositions and shaped articles comprising bifuran-modified polyethylene terephthalate and methods of their production are also disclosed.

公开(公告)号：US11781009B2

公开(公告)日：2023-10-10

申请号：US17286760

申请日：2019-10-29

申请人： ENEOS Corporation

发明人： Gosuke Washino

IPC分类号： C08L67/03 ,  C08G63/60 ,  C08G63/80

CPC分类号： C08L67/03 ,  C08G63/605 ,  C08G63/80 ,  C08L2203/20

摘要： The invention provides a resin composition that is capable of relaxing anisotropy while keeping the crystalline structure derived from liquid crystallinity and that has isotropic structure and physicality from a macroscopic view, even after the melt-processed molded article obtained by applying shear has been molded, cooled and fused without applying shear stress and subsequently re-cooled. The resin composition comprises a liquid crystal polyester resin (A) comprising structural unit (I) derived from a hydroxycarboxylic acid, structural unit (II) derived from a diol compound, and structural unit (III) derived from a dicarboxylic acid, and a resin (B) other than the liquid crystal polyester resin (A), and has an X-ray diffraction measured after fusing the resin composition that satisfies a specific condition.

公开(公告)号：US20230272161A1

公开(公告)日：2023-08-31

申请号：US18017900

申请日：2021-08-27

申请人： Furanix Technologies B.V.

发明人： Matheus Adrianus Dam ,  Bing Wang ,  Hendawy Elfeki

IPC分类号： C08G63/86 ,  C08G63/80 ,  C08G63/181

CPC分类号： C08G63/863 ,  C08G63/80 ,  C08G63/181

摘要： A process for preparing a polyester having 2,5-furandicarboxylate units includes subjecting a starting composition including 2,5-furandicarboxylic acid and an aliphatic diol to esterification conditions to produce an ester composition and contacting the ester composition with a germanium containing solution at polycondensation conditions to produce a polyester including 2,5-furandicarboxylate units, and polyester including 2,5-furandicarboxylate units including of from 5 to 100 ppm of germanium and having a number average molecular weight of at least 30 kg/mol.

公开(公告)号：US11634536B2

公开(公告)日：2023-04-25

申请号：US16271834

申请日：2019-02-10

申请人： HYOSUNG ADVANCED MATERIALS CORPORATION

发明人： Seung Taek Oh ,  Moo Song Kim

IPC分类号： C08G63/80 ,  C08J3/22 ,  C08K3/04 ,  D05C17/02 ,  B60N3/04 ,  C08G63/183 ,  D01F1/04 ,  D01F6/62 ,  D02G1/12 ,  D06N7/00 ,  D01F1/06

摘要： A polyethylene terephthalate bulked continuous filament is manufactured by steps of melt-spinning, multi-step stretching a polyethylene terephthalate chip and a master batch chip for coloring, passing through a texturing nozzle, cooling, and winding and has an elastic modulus of 1.00E+07 to 5.00E+09 Pa at a temperature range of 10° C. to 200° C., the filament being manufactured by steps of melt-spinning a polyethylene terephthalate chip and a master batch chip for coloring, multi-step stretching, passing through a texturing nozzle, cooling, and winding.

公开(公告)号：US11525192B2

公开(公告)日：2022-12-13

申请号：US16771257

申请日：2019-11-18

申请人： SEYANG POLYMER

发明人： Sun Hwa Jang ,  Tae-Young Ha ,  Sung-Eun Kim ,  Youn Eung Lee

IPC分类号： D01F6/62 ,  C08G63/183 ,  C08G63/195 ,  C08G63/80 ,  D01D5/08 ,  D01D10/02 ,  D01F6/84

摘要： The present invention relates to a method for manufacturing a wholly aromatic liquid-crystalline polyester fiber with enhanced spinnability, and more specifically, to a method for manufacturing a wholly aromatic liquid-crystalline polyester fiber including: pelletizing a resin manufactured by adding 1.08 equivalents to 1.12 equivalents of acetic anhydride to raw material monomers including hydroxy benzoic acid, hydroxy naphthoic acid, biphenol, terephthalic acid, and isophthalic acid, followed by solid-phase polycondensation, and melt-spinning under oil conditions in which winding-up improving oil is diluted to 0.5% to 2% and silicone spinning oil for high temperature is diluted to 0.5% to 2%, respectively, with water as a solvent.

公开(公告)号：US20220119602A1

公开(公告)日：2022-04-21

申请号：US17422699

申请日：2019-07-05

申请人： SK CHEMICALS CO., LTD.

发明人： Da-Young HWANG ,  Yoo Jin LEE

IPC分类号： C08J5/18 ,  C08G63/183 ,  C08G63/80 ,  C08L67/02 ,  B29C48/00 ,  B29C48/08 ,  B29C55/00 ,  B29C55/14 ,  B29C71/02

摘要： The present disclosure relates to a polyester film and a preparation method of the same. Since the polyester film includes a resin layer formed from a mixture comprising a polyester resin, which includes a first diol moiety derived from isosorbide and a second diol moiety derived from cyclohexanedimethanol in a controlled ratio, and polyethylene terephthalate in a specific ratio, it is possible to exhibit improved heat resistance and adhesion with excellent light transmittance.

公开(公告)号：US10815334B2

公开(公告)日：2020-10-27

申请号：US15911331

申请日：2018-03-05

申请人： MITSUBISHI CHEMICAL CORPORATION

发明人： Rie Shirahama ,  Tatsuya Hitomi ,  Atsushi Kasai

IPC分类号： C08G63/199 ,  C08G63/181 ,  C08G63/80 ,  C08K5/098 ,  C08K5/13 ,  C08K5/36 ,  C08K3/00 ,  C08K5/29 ,  C08K5/1515 ,  C08K5/49 ,  C08K3/40 ,  C08K7/14

摘要： There is provided a polyester resin including a 2,5-furandicarboxylic acid unit and a cyclohexanedimethanol unit in a main chain, in which the polyester resin is high in molecular weight, has heat resistance and hydrolysis resistance, and is excellent in mechanical properties and melt heat stability. There is also provided a method for producing a polyester resin having the above characteristics. A polyester resin including a 2,5-furandicarboxylic acid unit and a 1,4-cyclohexanedimethanol unit as main constituent components, wherein the following (I) and (II) are satisfied: (I) the reduced viscosity (ηsp/c) is 0.7 dL/g or more; and (II) the sum of a cyclovinylidene terminal and a methylcyclohexene terminal is 80 μeq/g or less.

公开(公告)号：US20200071459A1

公开(公告)日：2020-03-05

申请号：US16271834

申请日：2019-02-10

申请人： HYOSUNG ADVANCED MATERIALS CORPORATION

发明人： Seung Taek OH ,  Moo Song KIM

IPC分类号： C08G63/183 ,  C08G63/80 ,  C08J3/22 ,  C08K3/04 ,  D05C17/02 ,  B60N3/04

摘要： A polyethylene terephthalate bulked continuous filament is manufactured by steps of melt-spinning, multi-step stretching a polyethylene terephthalate chip and a master batch chip for coloring, passing through a texturing nozzle, cooling, and winding and has an elastic modulus of 1.00E+07 to 5.00E+09 Pa at a temperature range of 10° C. to 200° C., the filament being manufactured by steps of melt-spinning a polyethylene terephthalate chip and a master batch chip for coloring, multi-step stretching, passing through a texturing nozzle, cooling, and winding

公开(公告)号：US20190381695A1

公开(公告)日：2019-12-19

申请号：US16556429

申请日：2019-08-30

申请人： APG Polytech, LLC

发明人： Gianluca FERRARI

IPC分类号： B29B9/12 ,  C08G63/80 ,  C08G63/85 ,  C08G63/91 ,  C08K5/51 ,  C08L67/02

摘要： Disclosed herein is a resin pellet and a process to make said resin pellet. The resin pellet comprises a major polyester comprising a catalytic titanium compound, and a minor polyester comprising a phosphorus compound. The major polyester is present in a first compartmentalized zone of the resin pellet and the minor polyester is present in a second compartmentalized zone of the resin pellet.