公开(公告)号：US20190276590A1

公开(公告)日：2019-09-12

申请号：US16348937

申请日：2017-11-15

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Husnu Alp Alidedeoglu ,  Manojkumar Chellamuthu ,  Ramon Groote ,  Prashant Kumar

IPC: C08G63/183 ,  C08G63/78

Abstract: Provided are methods for preparing dynamic cross-linked polymer compositions derived from 1,4-butane diol, a terephthalic acid and a chain extender combined via continuous polymerization.

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：US10364321B2

公开(公告)日：2019-07-30

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

Abstract: A batch process for preparing polybutylene terephthalate (PBT) includes heating a solid PBT oligomer having an intrinsic viscosity (IV) of 0.1 to 0.2 dL/g and a carboxylic acid end group concentration [CEG] of 90 to 180 mmol/kg at a temperature and pressure defined herein to form melted homogeneous PBT oligomer containing 0 to 300 ppm tetra(C1-C8 alkyl) titanate catalyst, and polycondensing the melted homogeneous PBT oligomer in the presence of a tetra(C1-C8 alkyl) titanate catalyst, reducing the pressure, and maintaining the temperature at approximately 245-260° C. for a sufficient time to provide PBT having an IV of 0.55 and 1.20 dL/g. The PBT oligomer can be prepared by heating a mixture of 1,4-butane diol and purified terephthalic acid in the presence of a tetra(C1-C8 alkyl) titanate catalyst.

公开(公告)号：US10344119B2

公开(公告)日：2019-07-09

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 ,  B01J19/00

Abstract: Disclosed is a continuous process and device for making polybutylene terephthalate (PBT) resin, particularly high molecular weight PBT resin. The process includes combining 1,4-butane diol and purified terephthalic acid to form a mixture and continuously supplying the mixture to a tower reactor having a plurality of reactor zones for esterification and/or transesterification. The product is continuously supplied to a first continuously stirred tank reactor, and further to a continuous polycondensation reactor. Particular conditions for each step of the process are further described herein. 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：US20190040325A1

公开(公告)日：2019-02-07

申请号：US16061391

申请日：2016-12-12

Applicant: SABIC Global Technologies B.V.

Inventor： Kokil Jain ,  Christoph Dittrich ,  Prashant Kumar

IPC: C10G53/04

Abstract: The present invention relates to a process for the separation of aromatic hydrocarbons from a hydrocarbon feed stream comprising contacting a hydrocarbon feed stream with a solvent for aromatics (aromatics solvent) to provide an aromatics-laden solvent stream and subjecting the aromatics-laden solvent stream to solvent regeneration to provide regenerated aromatics solvent and an aromatics stream.

公开(公告)号：US20190040192A1

公开(公告)日：2019-02-07

申请号：US16076897

申请日：2017-01-19

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Prashant Kumar ,  Husnu Alp Alidedeoglu

IPC: C08G63/183 ,  C08G63/78 ,  C08G63/85 ,  D01F6/62

Abstract: The present invention relates to a process for the production of poly(butylene terephthalate) comprising the steps of: (i) providing a poly(butylene terephthalate) oligomer having an intrinsic viscosity (IV) of 0.25-0.35 dl/g, a carboxylic end group (CEG) content of 25-35 mmol/kg, and a ratio of IV:CEG of ≤15 dl/mmol; (ii) introducing said poly(butylene terephthalate) oligomer to a low-pressure reactor; and (iii) performing a polycondensation reaction in said low-pressure reactor by subjecting the poly(butylene terephthalate) oligomer to a pressure of ≥0.05 and ≤5.0 mbar at a temperature of 235 to 255° C., for such average residence time to obtain a poly(butylene terephthalate) having a ratio of IV:CEG of ≥18 dl/mmol, preferably ≥25 dl/mmol and having an IV of ≥0.45 dl/g; wherein steps (i), (ii) and (iii) are conducted in that order. Such process allows for the production of poly(butylene terephthalates) having a desired low CEG at given, desired high, IV using a poly(butylene terephthalate) oligomer having a relatively high CEG at given IV. Such process allows for the production of poly(butylene terephthalates) using poly(butylene terephthalate) oligomers obtained from an esterification process using PTA and 1,4-butanediol.

公开(公告)号：US20190270847A1

公开(公告)日：2019-09-05

申请号：US16348922

申请日：2017-11-15

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Husnu Alp Alidedeoglu ,  Manojkumar Chellamuthu ,  Prashant Kumar ,  Ramon Groote

IPC: C08G63/183 ,  C08G63/91 ,  C08G63/85

Abstract: Provided herein are methods for preparing dynamic cross-linked polymer compositions derived from an ester oligomer component, a chain extender component, and one or more of a transesterification or poly condensation catalyst are described. The dynamic cross-linked polymer compositions may be prepared via melt poly condensation.

公开(公告)号：US20190119455A1

公开(公告)日：2019-04-25

申请号：US16096742

申请日：2017-04-28

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Prashant Kumar ,  Husnu Alp Alidedeoglu ,  Manojkumar Chellamuthu ,  Ramon Groote

IPC: C08J3/24 ,  C08J7/14 ,  C08G59/02 ,  C08G59/42 ,  C08G59/68

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