公开(公告)号：US20170002194A1

公开(公告)日：2017-01-05

申请号：US15115404

申请日：2015-01-27

Applicant: WINTECH POLYMER LTD.

Inventor： Takuma Ishikawa ,  Takayuki Ishikawa ,  Kazuya Goshima

IPC: C08L67/02

CPC classification number: C08L67/02 ,  C08K5/103 ,  C08L23/06 ,  C08L2201/08 ,  C08L2205/06

Abstract: Provided is a polybutylene terephthalate resin composition having excellent mold releasability, measurement stability and hydrolysis resistance, and exhibiting minimal discoloration under high-temperature conditions. The polybutylene terephthalate resin composition contains: (A) a polybutylene terephthalate resin, (B) a higher fatty acid ester of pentaerythritol, and (C) a low-molecular weight polyethylene having a number-average molecular weight of 3,000 to 7,000. It is preferable that the component (B) is pentaerythritol tetrastearate, and that the component (C) is a low-molecular weight polyethylene having a number-average molecular weight of 4,500 to 5,500.

Abstract translation: 提供了具有优异的脱模性，测量稳定性和耐水解性的聚对苯二甲酸丁二醇酯树脂组合物，并且在高温条件下显示出最小的变色。 聚对苯二甲酸丁二醇酯树脂组合物含有：（A）聚对苯二甲酸丁二醇酯树脂，（B）季戊四醇的高级脂肪酸酯，（C）数均分子量为3,000〜7000的低分子量聚乙烯。 优选组分（B）是季戊四醇四硬脂酸酯，组分（C）是数均分子量为4500-5,500的低分子量聚乙烯。

公开(公告)号：US09663652B2

公开(公告)日：2017-05-30

申请号：US15115404

申请日：2015-01-27

Applicant: WinTech Polymer Ltd.

Inventor： Takuma Ishikawa ,  Takayuki Ishikawa ,  Kazuya Goshima

IPC: C08G63/02 ,  C08L67/02

CPC classification number: C08L67/02 ,  C08K5/103 ,  C08L23/06 ,  C08L2201/08 ,  C08L2205/06

Abstract: Provided is a polybutylene terephthalate resin composition having excellent mold releasability, measurement stability and hydrolysis resistance, and exhibiting minimal discoloration under high-temperature conditions. The polybutylene terephthalate resin composition contains: (A) a polybutylene terephthalate resin, (B) a higher fatty acid ester of pentaerythritol, and (C) a low-molecular weight polyethylene having a number-average molecular weight of 3,000 to 7,000. It is preferable that the component (B) is pentaerythritol tetrastearate, and that the component (C) is a low-molecular weight polyethylene having a number-average molecular weight of 4,500 to 5,500.

公开(公告)号：US09221946B2

公开(公告)日：2015-12-29

申请号：US14368935

申请日：2012-11-20

Applicant: WinTech Polymer Ltd.

Inventor： Kunihiro Hirata ,  Kazuhito Suzuki ,  Takayuki Ishikawa

IPC: C08G63/91 ,  B29C47/00 ,  B29K67/00

CPC classification number: C08G63/916 ,  B29C47/0038 ,  B29K2067/006

Abstract: Provided is technology that causes polybutylene terephthalate resin to react with a reactive compound and reduces the thermal decomposition of the polybutylene terephthalate resin, when performing reactive processing method using the polybutylene terephthalate resin. During production of polybutylene terephthalate resin pellets, the polybutylene terephthalate resin (A) and a reactive compound (B) that reacts with the polybutylene terephthalate resin (A) are reacted such that the difference between the intrinsic viscosity of a polybutylene terephthalate resin composition configuring the polybutylene terephthalate resin pellets and the intrinsic viscosity of a polybutylene terephthalate resin composition configuring a polybutylene terephthalate resin molded article is no more than 0.05 dL/g, and the amount of carboxylic group ends in the resin included in the polybutylene terephthalate resin pellets is adjusted so as to be no more than 25 meq/kg.

Abstract translation: 提供了当使用聚对苯二甲酸丁二醇酯树脂进行反应性处理方法时，使聚对苯二甲酸丁二醇酯树脂与反应性化合物反应并减少聚对苯二甲酸丁二醇酯树脂的热分解的技术。 在聚对苯二甲酸丁二醇酯树脂颗粒的制造过程中，与聚对苯二甲酸丁二醇酯树脂（A）反应的聚对苯二甲酸丁二醇酯树脂（A）和反应性化合物（B）反应，使得构成该聚对苯二甲酸丁二醇酯树脂的聚对苯二甲酸丁二醇酯树脂组合物的特性粘度之差 聚对苯二甲酸丁二醇酯树脂颗粒和构成聚对苯二甲酸丁二醇酯树脂模塑制品的聚对苯二甲酸丁二醇酯树脂组合物的特性粘度不大于0.05dL / g，并且将聚对苯二甲酸丁二醇酯树脂颗粒中包含的树脂中的羧基末端的量调节至 不超过25meq / kg。