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公开(公告)号：US20170298181A1
公开(公告)日：2017-10-19
申请号：US15515624
申请日：2015-10-01
Applicant: DSM IP ASSETS B.V
Inventor： Rudy RULKENS , Martin WOLFFS
CPC classification number: C08G69/30 , C08G69/26 , C08L77/06 , C08L2205/025
Abstract: The invention relates to a process for the preparation of a PA XY/XZ polyamide, more particular a copolyamide having alternating XY units and XZ units and a process for the manufacture thereof. Further, the present invention relates to compositions and articles comprising said copolyamide. Furthermore, the present invention relates to diamines and salts which are intermediary products of the process for the manufacture of said copolyamide.
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公开(公告)号：US20190263965A1
公开(公告)日：2019-08-29
申请号：US16340781
申请日：2017-10-18
Applicant: DSM IP Assets B.V.
Inventor： Martin WOLFFS , Rudy RULKENS , Renier Henricus Maria KIERKELS
Abstract: The present invention relates to a semi-crystalline semi-aromatic polyamide consisting of 95-100 mole % of monomeric units derived from diamine comprising aliphatic diamine comprising 5-40 mole % of a cycloaliphatic diamine, and dicarboxylic acid comprising at least 50 mole % of naphthalene dicarboxylic acid (N), or biphenyl dicarboxylic acid (B), or a combination thereof.
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公开(公告)号：US20210002481A1
公开(公告)日：2021-01-07
申请号：US16982782
申请日：2019-03-21
Applicant: DSM IP ASSETS B.V.
Inventor： Hans Klaas VAN DIJK , Martin WOLFFS
Abstract: The invention relates to a polyamide polymer; to a polymer composition comprising the polyamide polymer and a fibrous reinforcing agent or a filler, or a combination thereof; to a molded part made of the polymer composition; and to an automotive vehicle comprising a load-bearing structural part made of the molded part. Herein the polyamide polymer has a glass transition temperature (Tg) of at least 145° C. and a dynamic modulus (E′), measured at a temperature (Tmod) equal to Tg+15° C., in the range of 100 MPa-700 MPa.
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