公开(公告)号：US09850348B2

公开(公告)日：2017-12-26

申请号：US14763642

申请日：2014-01-30

Applicant: DSM IP ASSETS B.V.

Inventor： Eric Grolman ,  Rudy Rulkens ,  Konraad Albert Louise Hector Dullaert ,  Renier Henricus Maria Kierkels ,  Geert Adelina Rudolf Vanden Poel

IPC: C08G69/30 ,  C08G69/32 ,  C07C209/68 ,  C07C51/41 ,  C08G69/26 ,  C08L77/06 ,  C08L77/10

CPC classification number: C08G69/32 ,  C07C51/412 ,  C07C209/68 ,  C08G69/26 ,  C08G69/265 ,  C08G69/30 ,  C08L77/06 ,  C08L77/10 ,  C07C63/333 ,  C07C63/38 ,  C07C63/28 ,  C07C211/12 ,  C07C211/09

Abstract: The invention relates to a process for preparing a semi-aromatic polyamide from diamine and dicarboxylic acid, comprising steps of •(i) dosing a liquid diamine to an agitated powder comprising an aromatic dicarboxylic acid thereby forming a powder comprising a diamine/dicarboxylic acid salt (DD-salt), and •(ii) solid-state polymerizing the DD-salt to obtain the polyamide.

公开(公告)号：US08969460B2

公开(公告)日：2015-03-03

申请号：US14288174

申请日：2014-05-27

Applicant: DSM IP Assets B.V.

Inventor： Pieter Gijsman ,  Wilhelmus J. M. Sour ,  Rudy Rulkens ,  Robert H. C. Janssen

IPC: C08K3/22 ,  C08L77/00 ,  C08K3/00 ,  C08K5/00

CPC classification number: C08L77/00 ,  C08K3/014 ,  C08K3/22 ,  C08K5/005 ,  C08K3/0041

Abstract: A thermostabilized thermoplastic molding composition includes a) a thermoplastic polyamide composition which consists of a blend of at least two polyamides. The at least two polyamides include a1) at least 50 mass %, relative to the total mass of the thermoplastic polyamide composition, of a first polyamide (PA-1) selected from the group consisting of polyamide-4,6, polyamide-6,6 and semi-aromatic polyamides and mixtures thereof; and a2) an amount of 1-50 mass %, relative to the total mass of the thermoplastic polyamide composition, of a second polyamide (PA-2) selected from the group consisting of polyamide-6 and copolymers thereof. The composition also contains b) 0.001-3 mass %, relative to the total mass of the thermoplastic polyamide composition, of a copper salt; and c) 0.01-10 mass %, relative to the total mass of the thermoplastic polyamide composition, of iron oxide. The molding composition exhibits reduced deterioration when exposed to an elevated temperature of 230° C. for a prolonged time period of 1000 hours as compared to an identical molding composition including a Cul/KI stabilization system but not including the iron oxide.

Abstract translation: 热稳定的热塑性模塑组合物包括：a）由至少两种聚酰胺的共混物组成的热塑性聚酰胺组合物。 所述至少两种聚酰胺包括a1）相对于热塑性聚酰胺组合物的总质量为至少50质量％的选自聚酰胺-4,6，聚酰胺-6，聚酰胺-6的聚酰胺（PA-1） 6和半芳族聚酰胺及其混合物; 和a2）相对于热塑性聚酰胺组合物的总质量为1-50质量％的选自聚酰胺-6及其共聚物的第二聚酰胺（PA-2）的量。 组合物还含有相对于热塑性聚酰胺组合物的总质量为0.001-3质量％的铜盐; 和c）相对于热塑性聚酰胺组合物的总质量为0.01-10质量％的氧化铁。 与包含Cul / KI稳定体系但不包含氧化铁的相同的成型组合物相比，当与230℃的升高的温度相比长时间的1000小时时，模塑组合物显示出降低的劣化。