公开(公告)号：US20230250232A1

公开(公告)日：2023-08-10

申请号：US18135130

申请日：2023-04-15

Applicant: Ascend Performance Materials Operations LLC

Inventor： James E. Polk ,  Chris E. Schwier ,  Ashish Sen ,  Craig A. Trask ,  Cihan Uzunpinar ,  Chie-Hsiung Wang ,  J. Marty Zabcik

IPC: C08G69/30 ,  B29C48/00 ,  B29C48/40 ,  B29C48/14 ,  B29C48/25 ,  B29B13/00 ,  C08G69/06 ,  C08G69/08 ,  C08G69/04 ,  C08G69/28 ,  B29B13/06 ,  B29B13/02 ,  B29B9/12 ,  C08G69/36 ,  D01F6/60

CPC classification number: C08G69/30 ,  B29C48/022 ,  B29C48/40 ,  B29C48/144 ,  B29C48/267 ,  B29B13/00 ,  C08G69/06 ,  C08G69/08 ,  C08G69/04 ,  C08G69/28 ,  B29B13/06 ,  B29B13/022 ,  B29C48/00 ,  B29B9/12 ,  C08G69/36 ,  D01F6/60 ,  B29C2791/006 ,  B29B2013/005 ,  B29C48/04

Abstract: A customizable polyamide polymer, in particular Nylon 66, Nylon 6, and copolyamides, having a high molecular weight, excellent color, and low gel content is disclosed. In particular, disclosed is a polymer having a relative viscosity greater than 50 as measured in a 90% strength formic acid solution; consistent viscosity with a standard deviation of less than 1; a gel content no greater than 50 ppm as measured by insolubles larger than 10 micron; an optical defect content of less than 2,000 parts per million (ppm) as measured by optical control system (OCS). The polymer can be made into monofilaments or a multifilament yarn.

公开(公告)号：US20180340042A1

公开(公告)日：2018-11-29

申请号：US15778778

申请日：2016-11-29

Applicant: Ascend Performance Materials Operations LLC

Inventor： James E. Polk ,  Chris E. Schwier ,  Ashish Sen ,  Craig A. Trask ,  Cihan Uzunpinar ,  Chie-Hsiung Wang ,  J. Marty Zabcik

IPC: C08G69/30 ,  B29B9/12 ,  B29C47/00 ,  B29C47/08 ,  B29C47/40 ,  D01F6/60 ,  C08G69/36

Abstract: A customizable polyamide polymer, in particular Nylon 66, Nylon 6, and copolyamides, having a high molecular weight, excellent color, and low gel content is disclosed. In particular, disclosed is a polymer having a relative viscosity greater than 50 as measured in a 90% strength formic acid solution; consistent viscosity with a standard deviation of less than 1; a gel content no greater than 50 ppm as measured by insolubles larger than 10 micron; an optical defect content of less than 2,000 parts per million (ppm) as measured by optical control system (OCS). The polymer can be made into monofilaments or a multifilament yarn.Also disclosed is a process of producing the polymer using in-line vacuum finishing technology in the absence of steam or other gases in the second, or post condensation, step of the polymer process.