公开(公告)号：US10899875B2

公开(公告)日：2021-01-26

申请号：US16298235

申请日：2019-03-11

Applicant: SABIC Global Technologies B.V.

Inventor： Husnu Alp Alidedeoglu ,  Prashant Kumar ,  Brian Bougher ,  Cornelis Adrianus Maria van Gool ,  Sasi Sethumadhavan Kannamkumarath ,  Bing Zhou

IPC: C08G63/183 ,  C08G63/78

Abstract: A device for making polybutylene terephthalate includes (1) a slurry paste vessel; (2) a tower reactor to which a mixture of 1,4-butane diol and terephthalic acid from vessel (1) is supplied, the tower reactor having a plurality of reactor zones wherein the lower third of the tower reactor is in the form of a hydrocyclone with attached heat exchanger, and the hydrocyclone has a supply line from vessel (1), the hydrocyclone being connected to the top side of the tower reactor; (3) a first continuously stirred tank reactor to which the product from tower reactor (2) is supplied; (4) an optional second continuously stirred tank reactor to which the product from (3) is supplied; (5) a dual shaft ring reactor to which the product from stirred tank reactor (3) or (4), is supplied; and (6) a pelletizer where the product from dual shaft ring reactor (5) is continuously fed and pelletized.

公开(公告)号：US10479888B2

公开(公告)日：2019-11-19

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 ,  C08G63/83 ,  C08G63/91

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：US20190263963A1

公开(公告)日：2019-08-29

申请号：US16298235

申请日：2019-03-11

Applicant: SABIC Global Technologies B.V.

Inventor： Husnu Alp Alidedeoglu ,  Prashant Kumar ,  Brian Bougher ,  Cornelis Adrianus Maria van Gool ,  Sasi Sethumadhavan Kannamkumarath ,  Bing Zhou

IPC: C08G63/183 ,  C08G63/78

Abstract: Disclosed is a continuous process and device for making polybutylene terephthalate (PBT) resin, particularly high molecular weight PBT resin. Also disclosed are a device for conducting the process, and a monitoring process for determining the carboxylic acid end group concentration of the resulting PBT.

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：US20170369638A1

公开(公告)日：2017-12-28

申请号：US15542677

申请日：2016-01-29

Applicant: SABIC Global Technologies B.V.

Inventor： Husnu Alp Alidedeoglu ,  Prashant Kumar ,  Brian Bougher ,  Cornelis Adrianus Maria van Gool ,  Sasi Sethumadhavan Kannamkumarath ,  Bing Zhou

IPC: C08G63/183 ,  C08G63/78

CPC classification number: C08G63/183 ,  B01J2219/00006 ,  C08G63/785

Abstract: Disclosed is a continuous process and device for making polybutylene terephthalate (PBT) resin, particularly high molecular weight PBT resin. Also disclosed are a device for conducting the process, and a monitoring process for determining the carboxylic acid end group concentration of the resulting PBT.

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.

公开(公告)号：US20170198090A1

公开(公告)日：2017-07-13

申请号：US15320888

申请日：2015-08-13

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Husnu Alp Alidedeoglu ,  Prashant Kumar

IPC: C08G63/85 ,  C08G63/183

CPC classification number: C08G63/85 ,  C08G63/183

Abstract: An improved process for making polybutylene terephthalate resin is disclosed. The resin is prepared from oligomers of purified terephthalic acid and 1,4-butane diol in the presence of a catalyst.

公开(公告)号：US11021570B2

公开(公告)日：2021-06-01

申请号：US16474616

申请日：2017-12-06

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Prashant Kumar ,  Husnu Alp Alidedeoglu ,  Keshavaraja Alive

IPC: C08G63/181 ,  B01J21/06 ,  C08G63/82

Abstract: The present invention relates to a process for the production of a thermoplastic polyester using a reaction mixture comprising a dicarboxylic acid having a melting temperature of ≥200° C. wherein the dicarboxylic acid is introduced to the process in the form of particles having an average particle diameter of ≥100 μm. Such process results in a reduction of the polymerisation time. Furthermore, it allows for the production of thermoplastic polyesters having a desired balance of intrinsic viscosity and carboxylic end group content at a reduced polymerisation time.

公开(公告)号：US20190338071A1

公开(公告)日：2019-11-07

申请号：US16474616

申请日：2017-12-06

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Prashant Kumar ,  Husnu Alp Alidedeoglu ,  Keshavaraja Alive

IPC: C08G63/181 ,  C08G63/82 ,  B01J21/06

Abstract: The present invention relates to a process for the production of a thermoplastic polyester using a reaction mixture comprising a dicarboxylic acid having a melting temperature of ≥200° C. wherein the dicarboxylic acid is introduced to the process in the form of particles having an average particle diameter of ≥100 μm. Such process results in a reduction of the polymerisation time. Furthermore, it allows for the production of thermoplastic polyesters having a desired balance of intrinsic viscosity and carboxylic end group content at a reduced polymerisation time.