公开(公告)号：US10961377B2

公开(公告)日：2021-03-30

申请号：US16617232

申请日：2018-05-25

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sangita Nandi ,  Rukmini Khatokar ,  Anirban Ganguly ,  Debasish Banerjee ,  Susanta Mitra ,  Stephen D. Pask

IPC: C08L23/16

Abstract: The present invention relates to a process for the production of an ethylene-propylene-diene terpolymer (EPDM) composition in a reaction vessel comprising the following steps in this order: (a) supplying a quantity of a first composition comprising an ethylene copolymer or a propylene copolymer and a first peroxide to the reaction vessel; (b) supplying a quantity of a second composition comprising EPDM and a second peroxide to the reaction vessel; or (a) supplying a quantity of a second composition comprising EPDM and a second peroxide to the reaction vessel; (b) supplying a quantity of a first composition comprising an ethylene copolymer or a propylene copolymer and a first peroxide to the reaction vessel; and (c) exposing the contents of the reaction vessel under stirring to a temperature of 100-200° C.; wherein the ethylene copolymer is a copolymer comprising polymeric units derived from ethylene and polymeric units derived from a mono-olefinic compound comprising 3 to 10 carbon atoms, and wherein the propylene copolymer is a copolymer comprising polymeric units derived from propylene and polymeric units derived from a mono-olefinic compound comprising 2 carbon atoms or 4-10 carbon atoms. Such process allows for the production of an oil-extended EPDM composition having a certain high Mooney viscosity whilst still using an EPDM as obtained from the polymerisation process having a relatively moderate Mooney viscosity.

公开(公告)号：US11192966B2

公开(公告)日：2021-12-07

申请号：US16462370

申请日：2017-11-28

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Roopali Rai ,  Stephen D. Pask ,  Susanta Mitra ,  Abdulsattar Dawood

IPC: C08F120/44 ,  D01F6/18 ,  C08F220/44

Abstract: The present invention relates to a process for the production of polyacrylonitrile by polymerisation of a reaction mixture comprising acrylonitrile in a solution where the solvent is a eutectic system comprising a quaternary ammonium compound and a hydrogen donor. Such process allows for the production of a polyacrylonitrile having a desirably high molecular weight, whilst polymerisation time is reduced, and where the solvents are environmentally benign, biodegradable and may be reused in the polymerisation process.

公开(公告)号：US20190276569A1

公开(公告)日：2019-09-12

申请号：US16462370

申请日：2017-11-28

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Roopali Rai ,  Stephen D. Pask ,  Susanta Mitra ,  Abdulsattar Dawood

IPC: C08F120/44 ,  D01F6/18

Abstract: The present invention relates to a process for the production of polyacrylonitrile by polymerisation of a reaction mixture comprising acrylonitrile in a solution where the solvent is a eutectic system comprising a quaternary ammonium compound and a hydrogen donor. Such process allows for the production of a polyacrylonitrile having a desirably high molecular weight, whilst polymerisation time is reduced, and where the solvents are environmentally benign, biodegradable and may be reused in the polymerisation process.

公开(公告)号：US20200148870A1

公开(公告)日：2020-05-14

申请号：US16617232

申请日：2018-05-25

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sangita Nandi ,  Rukmini Khatokar ,  Anirban Ganguly ,  Debasish Banerjee ,  Susanta Mitra ,  Stephen D. Pask

IPC: C08L23/16

Abstract: The present invention relates to a process for the production of an ethylene-propylene-diene terpolymer (EPDM) composition in a reaction vessel comprising the following steps in this order: (a) supplying a quantity of a first composition comprising an ethylene copolymer or a propylene copolymer and a first peroxide to the reaction vessel; (b) supplying a quantity of a second composition comprising EPDM and a second peroxide to the reaction vessel; or (a) supplying a quantity of a second composition comprising EPDM and a second peroxide to the reaction vessel; (b) supplying a quantity of a first composition comprising an ethylene copolymer or a propylene copolymer and a first peroxide to the reaction vessel; and (c) exposing the contents of the reaction vessel under stirring to a temperature of 100-200° C.; wherein the ethylene copolymer is a copolymer comprising polymeric units derived from ethylene and polymeric units derived from a mono-olefinic compound comprising 3 to 10 carbon atoms, and wherein the propylene copolymer is a copolymer comprising polymeric units derived from propylene and polymeric units derived from a mono-olefinic compound comprising 2 carbon atoms or 4-10 carbon atoms. Such process allows for the production of an oil-extended EPDM composition having a certain high Mooney viscosity whilst still using an EPDM as obtained from the polymerisation process having a relatively moderate Mooney viscosity.