公开(公告)号：US20190127519A1

公开(公告)日：2019-05-02

申请号：US16095291

申请日：2017-04-28

Applicant: SABIC Global Technologies B.V.

Inventor： Husnu Alp ALIDEDEOGLU ,  Manojkumar CHELLAMUTHU ,  Ramon GROOTE ,  Prashant KUMAR

IPC: C08G63/183 ,  C08G63/78 ,  C08G63/91

Abstract: Methods for preparing dynamic cross-linked polymer compositions derived from an ester oligomer component, a monomeric chain extender component, and transesterification and polycondensation catalysts are described.

公开(公告)号：US20180163045A1

公开(公告)日：2018-06-14

申请号：US15736814

申请日：2016-06-03

Applicant: SABIC Global Technologies B.V.

Inventor： Husnu Alp ALIDEDEOGLU ,  Yuzhen YANG ,  Prashant KUMAR

IPC: C08L67/02 ,  C08G63/91 ,  C08G63/83

CPC classification number: C08L67/02 ,  C08G63/183 ,  C08G63/83 ,  C08G63/916 ,  C08K7/14 ,  C08L2201/08 ,  C08L2205/025 ,  C08L2205/03

Abstract: The present invention relates to a thermoplastic composition with improved hydrolytic stability, comprising: 30 to 50 percent by weight of a polybutylene terephthalate (PBT) having a carboxylic end group concentration (CEG) of 40 to 120 mmol/kg and an intrinsic viscosity of 0.63 to 0.68 dl/g as measured in a 60:40 phenol/tetrachloroethane; 0.01 to 0.1 percent by weight of a catalyst; 0.01 to 5 percent by weight of an epoxy chain extender; wherein all weight percents are based on the total weight of the composition.

公开(公告)号：US20180362705A1

公开(公告)日：2018-12-20

申请号：US15736844

申请日：2016-06-03

Applicant: SABIC Global Technologies B.V.

Inventor： Husnu Alp ALIDEDEOGLU ,  Prashant KUMAR

IPC: C08G63/183 ,  C08G63/85

Abstract: Disclosed are improved processes for making high molecular weight polybutylene terephthalate resin. The PBT resin has a number average molecular weight of 30000 and 55000 g/mol, an IV of between 1.10 and 1.25 dl/g and a carboxylic acid end group concentration of between 35 and 70 mmol/kg. The PBT resin is prepared from PBT oligomers having an intrinsic viscosity of between 0.10 and 0.13 dl/g and a CEG of between 80 and 110 mmol/kg. The oligomers are prepared from purified terephthalic acid and 1,4-butane diol in the presence of a catalyst.