公开(公告)号：US10233282B2

公开(公告)日：2019-03-19

申请号：US15322570

申请日：2015-08-13

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Husnu Alp Alidedeoglu ,  Prashant Kumar ,  Osit Karroonnirun ,  Mark Nelson

IPC: C08G63/02 ,  C08G63/85 ,  C08G63/183 ,  C08G63/78

Abstract: A process for making oligomers of polybutylene terephthalate (PBT) with desirable intrinsic viscosity and carboxylic end group concentrations includes combining 1.4-butane diol (BDO). terephthalic acid and a catalyst to from a mixture and heating the mixture until the clearing point is reached based on visual inspection. The PBT oligomers are used in a continuous process for making polybutylene terephthalate (PBT) resin.

公开(公告)号：US09127136B1

公开(公告)日：2015-09-08

申请号：US14335197

申请日：2014-07-18

Applicant: SABIC Global Technologies B.V

Inventor： Philip Wesley Bell ,  Osit Karroonnirun ,  Shankar Kollengodu Subramanian

IPC: C08G63/02 ,  C08J11/24 ,  C08G63/00

CPC classification number: C08J11/24 ,  C07C67/03 ,  C07C67/56 ,  C08J2367/02 ,  Y02W30/706 ,  C07C69/82

Abstract: A method of recycling bis(hydroxyalkyl) terephthalate monomer from a composition comprising a terephthalate-containing polymer includes depolymerizing the terephthalate-containing polymer to provide the bis(hydroxyalkyl) terephthalate; and separating the bis(hydroxyalkyl) terephthalate from the composition comprising the depolymerized terephthalate-containing polymer by continuous multi-column liquid chromatography.

Abstract translation: 从包含对苯二甲酸酯的聚合物的组合物中回收双（羟烷基）对苯二甲酸酯单体的方法包括使含对苯二甲酸酯的聚合物解聚以提供对苯二甲酸双（羟烷基）酯; 并通过连续多柱液相色谱从包含解聚对苯二甲酸酯的聚合物的组合物中分离双（羟烷基）对苯二甲酸酯。

公开(公告)号：US10377854B2

公开(公告)日：2019-08-13

申请号：US15326665

申请日：2015-08-04

Applicant: SABIC Global Technologies B.V.

Inventor： Husnu Alp Alidedeoglu ,  Prashant Kumar ,  Osit Karroonnirun ,  Mark Erik Nelson ,  Donald E. Owens, III

IPC: B01J19/18 ,  C08G63/78

Abstract: A process for preparing polybutylene terephthalate (PBT) which includes step of melting solid PBT oligomer having an IV of between 0.13 and 0.17 dL/g and a CEG of between 90 and 180 mmol/kg; and further step of the PBT oligomer polycondensation; wherein the polycondensation process is carried out continuously using a melt tank for melting oligomers, one or more reactors for post-condensation processing, and one or more finishing reactors to increase molecular weight. The resulting PBT has an intrinsic viscosity (IV) of between 0.5 and 1.3 dl/g and a carboxylic end group (CEG) concentration of between 1 and 75 mmol/kg.

公开(公告)号：US20180201729A1

公开(公告)日：2018-07-19

申请号：US15322570

申请日：2015-08-13

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Husnu Alp Alidedeoglu ,  Prashant Kumar ,  Osit Karroonnirun ,  Mark Nelson

IPC: C08G63/85 ,  C08G63/183

CPC classification number: C08G63/85 ,  C08G63/183 ,  C08G63/78

Abstract: Disclosed is a process for making oligomers of polybutylene terephthalate (PBT) with desirable intrinsic viscosity and carboxylic end group concentrations. The PBT oligomers are used in a continuous process for making polybutylene terephthalate (PBT) resin.

公开(公告)号：US20170204219A1

公开(公告)日：2017-07-20

申请号：US15326665

申请日：2015-08-04

Applicant: SABIC Global Technologies B.V.

Inventor： Husnu Alp Alidedeoglu ,  Prashant Kumar ,  Osit Karroonnirun ,  Mark Erik Nelson ,  Donald E. Owens, III

IPC: C08G63/78 ,  B01J19/18

CPC classification number: C08G63/785 ,  B01J19/1862 ,  B01J2219/1941

Abstract: The present invention is directed to a continuous process for preparing PBT from PBT oligomer.