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公开(公告)号：US20220389620A1
公开(公告)日：2022-12-08
申请号：US17774937
申请日：2020-01-15
发明人： Chaoxu SUN , Wanzhong CHEN , Shuyuan CHEN , Zhiguo SHANG , Xiucai LIU
IPC分类号： D01F6/60 , D01F1/10 , D01D5/08 , D01D5/088 , D01D5/16 , D01D10/02 , C08G69/28 , C08G69/32 , C08K5/098 , C08K3/16
摘要： Disclosed in the present invention is a polyamide 5X industrial yarn. The polyamide 5X industrial yarn has a heat-resistant break strength retention rate of 90% or more after being treated at 180° C. for 4 hrs; a heat-resistant break strength retention rate of 90% or more after being treated at 230° C. for 30 mins; and a dry heat shrinkage of 8.0% or less. The polyamide 5X industrial yarn is widely used in the fields of sewing threads, tire cords, air bag yarns, release cloth, krama, canvas, safety belts, ropes, fishing nets, industrial filter cloth, conveyor belts, parachutes, tents, bags and suitcases.
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公开(公告)号：US20220306804A1
公开(公告)日：2022-09-29
申请号：US17566746
申请日：2021-12-31
发明人： Yuanbo ZHAO , Bingbing Qin , Xiucai Liu
IPC分类号： C08G69/28
摘要： The present invention provides a process for producing a high temperature resistant polyamide, the high temperature resistant polyamide and the use thereof. The process comprises: optionally concentrating a polyamide salt solution, and then conducting the following operations: heating and pressurizing to a pressure of P1, and maintaining the pressure, wherein the temperature of the system is T1 at the end of the pressure-maintenance; depressurizing to a pressure of P2, wherein the temperature of the system is T2 at the end of the depressurization; and evacuating, whereby a polyamide melt is obtained; wherein P1 is 0.8-4 MPa, T1 is 250-290° C., T1
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公开(公告)号：US11384202B2
公开(公告)日：2022-07-12
申请号：US16752068
申请日：2020-01-24
申请人： Henkel AG & Co. KGaA
发明人： Adrian Brandt , Horst Beck , Luca Mario Marchese , Sebastiano Moscardin , Alexander Schulz , Michael Strotz , Lisa Mareike Noack
摘要： A specific polyamide polymer which is obtainable by two specific processes according to the invention. The invention further relates to the use of this polyamide polymer as a functional additive and to detergent compositions, cosmetic compositions, cleaning compositions and adhesive compositions including this polyamide polymer.
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4.发明申请公开(公告)号：US20220098368A1
公开(公告)日：2022-03-31
申请号：US17513665
申请日：2021-10-28
申请人： DSM IP ASSETS B.V.
摘要： Processes for preparing a polyamide, a polyamide material obtained by such processes, a nylon salt to be used therein, and processes for making the nylon salt are disclosed. The processes for preparing the polyamide include a direct solid state polymerization process. The salt used herein is a granulate material, prepared by a process, comprising spraying an aqueous solution comprising a diamine and a dicarboxylic acid dissolved in an aqueous medium, or an aqueous slurry comprising a diammonium dicarboxylate salt dispersed in an aqueous medium directly obtained from such an aqueous solution, onto or in a fluidized bed of diammonium dicarboxylate salt particles, while evaporating the aqueous medium, thereby forming a granulate salt material.
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公开(公告)号：US20210371346A1
公开(公告)日：2021-12-02
申请号：US17399281
申请日：2021-08-11
IPC分类号： C04B35/634 , B29C64/165 , B33Y70/00 , C08J3/14 , C08G69/14 , C08G69/28
摘要： A polyamide powder for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polyamide powder has a solution viscosity to ISO 307 of 1.8 to 2 and a rise in the solution viscosity of 0% to 25% when it is subjected to a temperature 20° C. below its melting temperature under air for 20 hours.
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公开(公告)号：US20210317266A1
公开(公告)日：2021-10-14
申请号：US17268056
申请日：2019-08-13
发明人： Momoko YAMASHITA , Hatsuki OGURO , Takafumi ODA
摘要： Provided is a method for producing an amorphous polyamide resin whereby the production of foreign matter in the resin can be suppressed or avoided when producing an amorphous polyamide resin having a constituent unit derived from isophoronediamine, a constituent unit derived from an α,ω-linear aliphatic dicarboxylic acid having from 8 to 14 carbons, and a constituent unit derived from an aromatic dicarboxylic acid. The method for producing an amorphous polyamide resin including subjecting a diamine component and a dicarboxylic acid component to melt polycondensation reaction, the diamine component including 70 mol % or more of isophoronediamine, and the dicarboxylic acid component including an α,ω-linear aliphatic dicarboxylic acid having from 8 to 14 carbons and an aromatic dicarboxylic acid, wherein a maximum attainable temperature reached in the melt polycondensation reaction is higher than a melting point of the phosphorus atom-containing compound, and lower than a thermal decomposition temperature of the phosphorus-atom containing compound.
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公开(公告)号：US11117837B2
公开(公告)日：2021-09-14
申请号：US15720433
申请日：2017-09-29
IPC分类号： C08G69/28 , C04B35/634 , B29C64/165 , B33Y70/00 , C08J3/14 , C08G69/14 , B29C64/153
摘要： A polyamide powder for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polyamide powder has a solution viscosity to ISO 307 of 1.8 to 2 and a rise in the solution viscosity of 0% to 25% when it is subjected to a temperature 20° C. below its melting temperature under air for 20 hours.
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公开(公告)号：US11028063B2
公开(公告)日：2021-06-08
申请号：US16946850
申请日：2020-07-09
发明人： Stephen J. Howard , Kristina A. Kreutzer , Bhuma Rajagopalan , Eric R. Sacia , Alexandra Sanborn , Brennan Smith
IPC分类号： C07D307/02 , C07D307/68 , B01J21/06 , B01J23/10 , B01J23/656 , B01J23/75 , C07B33/00 , C07B63/00 , C08G69/28 , C08G69/32 , C08L77/10 , B01J31/04 , C08G63/181
摘要： An integrated process is useful for producing 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof from a six-carbon sugar-containing feed. The process includes a) dehydrating a feed containing a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed that contains at least one of 5-hydroxymethylfurfural (HMF) and/or a derivative or derivatives of HMF in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture of at least FDCA and/or a derivative thereof, the solvent, and a residual catalyst; c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).
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公开(公告)号：US10961348B2
公开(公告)日：2021-03-30
申请号：US16512438
申请日：2019-07-16
申请人： Arkema France
IPC分类号： C08K7/14 , C08L77/06 , C08K7/02 , C08G69/36 , C08G69/26 , C08G69/28 , C08J5/24 , B29C67/24 , B29K77/00
摘要： The invention relates to a composition for thermoplastic composite material comprising: 30% to 60% by volume, preferentially 35% to 50% by volume, of a thermoplastic matrix comprising from 50% to 100% by weight of a semi-crystalline polyamide polymer and from 0% to 50% by weight of at least one additive and/or of at least one other polymer, 40% to 70% by volume, preferentially 50% to 65% by volume, of long reinforcing fibers (or of long fibrous reinforcement), said thermoplastic matrix impregnating said long reinforcing fibers (or said long fibrous reinforcement), said semi-crystalline polyamide polymer being a nonreactive composition of at least one polyamide polymer, said composition being that of said thermoplastic matrix defined above, and said reactive polyamide prepolymer of the composition a) and said polyamide polymer of the composition b) comprising or consisting of at least one BACT/XT copolyamide.
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公开(公告)号：US10947344B2
公开(公告)日：2021-03-16
申请号：US16335049
申请日：2017-10-13
申请人： UNIVERSITÉ DE BORDEAUX , INSTITUT POLYTECHNIQUE DE BORDEAUX , Centre national de la recherche scientifique
摘要： The present invention relates to a novel synthesis route that can be used to access novel statistical, aliphatic-aromatic copolyamides, by means of ring-opening polymerisation and chain-growth polycondensation, as well as to the resulting copolymers.
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