公开(公告)号：US10479845B2

公开(公告)日：2019-11-19

申请号：US15500941

申请日：2015-09-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Leming Gu ,  Stephen T. Dalpe ,  Mauritz Kelchtermans ,  Sunny Jacob ,  John A. Clark ,  Michael F. McDonald, Jr. ,  Torri L. Rose

IPC: C08F8/22 ,  C08K5/13 ,  C08K5/134 ,  C08L23/28 ,  C08F210/10 ,  C08F210/12 ,  C08F236/08 ,  C08K5/3435

Abstract: This invention relates to a method of preparing a brominated elastomer having a stabilized Mooney viscosity. The method includes polymerizing isomonoolefins and at least one polymerizable unit to obtain an elastomer/polymer; brominating the elastomer/polymer to form a brominated elastomer effluent; neutralizing the brominated elastomer effluent to form a neutralized effluent; volatizing off the hydrocarbon solvent; and recovering a brominated elastomer. In at least one point of the process, preferably prior to any significant temperature change in the brominated polymer, a Mooney stabilizer is added into the system. Portions of the Mooney stabilizer may be added at multiple points into the process.

公开(公告)号：US10947375B2

公开(公告)日：2021-03-16

申请号：US15774302

申请日：2016-12-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Yu Feng Wang ,  Richard D. Hembree ,  Michael F. McDonald, Jr. ,  Joseph A. Maier ,  Richard C. M. Yeh ,  Leming Gu ,  Timothy D. Shaffer ,  Pamela J. Wright

IPC: C08F10/10 ,  C08L23/28 ,  B01J19/00 ,  B01J19/06 ,  B01J19/18 ,  B01J19/20 ,  C08L23/26

Abstract: A system for producing a functionalized olefinic-based polymer, the system comprising a polymerization zone for producing an olefinic-based polymer comprising a mixing section, a deliquifying section, and a quenching section, wherein at least one section of the polymerization zone has a defined cross-sectional area that continually decreases from a first end to a second end of said section; a devolatilization zone comprising a kneader or extruder, wherein said devolatilization zone is downstream of said polymerization zone and in fluid communication with said polymerization zone; and a functionalization zone downstream of said devolatilization zone and in fluid communication with said devolatilization zone.

公开(公告)号：US20180085989A1

公开(公告)日：2018-03-29

申请号：US15564562

申请日：2016-03-22

Applicant: Exxonmobil Chemical Patents Inc.

Inventor： Richard D. Hembree ,  Michael F. McDonald ,  Joseph A. Maier ,  Leming Gu ,  Yu Feng Wang

IPC: B29C47/36 ,  B29C47/10 ,  B29C47/00 ,  B29C47/76 ,  B29B7/74 ,  B29B7/82 ,  B29B7/84 ,  C08F8/20

CPC classification number: B29C48/385 ,  B29B7/44 ,  B29B7/7461 ,  B29B7/7485 ,  B29B7/7495 ,  B29B7/82 ,  B29B7/847 ,  B29C48/022 ,  B29C48/295 ,  B29C48/375 ,  B29C48/76 ,  B29C2948/92723 ,  B29K2023/18 ,  B29K2023/22 ,  B29K2105/0044 ,  C08F8/20

Abstract: A system for halogenating olefinic-based elastomer, the system comprising a first extruder, a first kneader vessel downstream of said first extruder and in fluid communication with said first extruder, a second extruder downstream of said first kneader vessel and in fluid communication with said first kneader vessel, a second kneader vessel downstream of said second extruder and in fluid communication with said second extruder; and a third extruder downstream of said second kneader vessel and in fluid communication with said second kneader vessel.

公开(公告)号：US10889704B2

公开(公告)日：2021-01-12

申请号：US15938012

申请日：2018-03-28

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Leming Gu ,  Thomas R. Barbee ,  Joel E. Schmieg

IPC: C08F6/14 ,  C08F6/20 ,  C08F8/32 ,  C08K5/3435 ,  C08L15/02 ,  B60C1/00 ,  C08K5/00

Abstract: Methods of improving Mooney stability of a brominated elastomer comprising: neutralizing a brominated elastomer effluent with a neutralizing agent and water to form a neutralized effluent comprising a hydrocarbon solvent; removing the solvent from the neutralized effluent to form a brominated elastomer slurry; and separating a brominated elastomer from the brominated elastomer slurry, wherein a Mooney stabilizer package comprising an amine-functional hindered amine stabilizer (HAS) and an acid scavenger can be added, together or separately, before the removing step are provided herein. The acid scavenger can comprise a protonatable atom with a pKa greater than the pKa of the HAS nitrogen atom. The separated brominated elastomer can have a delta Mooney of not more than about 10 Mooney units after ˜7 days at ˜80° C. Stabilized brominated elastomer compositions can be made using this method, and articles can be made from those compositions.

公开(公告)号：US20200255643A1

公开(公告)日：2020-08-13

申请号：US15774302

申请日：2016-12-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Yu Feng Wang ,  Richard D. Hembree ,  Michael F. McDonald, JR. ,  Joseph A. Maier ,  Richard C.M. Yeh ,  Leming Gu ,  Timothy D. Shaffer ,  Pamela J. Wright

IPC: C08L23/28 ,  C08F10/10 ,  C08L23/26 ,  B01J19/06 ,  B01J19/18 ,  B01J19/20 ,  B01J19/00

Abstract: A system for producing a functionalized olefinic-based polymer, the system comprising a polymerization zone for producing an olefinic-based polymer comprising a mixing section, a deliquifying section, and a quenching section, wherein at least one section of the polymerization zone has a defined cross-sectional area that continually decreases from a first end to a second end of said section; a devolatilization zone comprising a kneader or extruder, wherein said devolatilization zone is downstream of said polymerization zone and in fluid communication with said polymerization zone; and a functionalization zone downstream of said devolatilization zone and in fluid communication with said devolatilization zone.

公开(公告)号：US20180334555A1

公开(公告)日：2018-11-22

申请号：US15938012

申请日：2018-03-28

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Leming Gu ,  Thomas R. Barbee ,  Joel E. Schmieg

IPC: C08L15/02

CPC classification number: C08L15/02 ,  B60C1/0008 ,  C08L2201/08

Abstract: Methods of improving Mooney stability of a brominated elastomer comprising: neutralizing a brominated elastomer effluent with a neutralizing agent and water to form a neutralized effluent comprising a hydrocarbon solvent; removing the solvent from the neutralized effluent to form a brominated elastomer slurry; and separating a brominated elastomer from the brominated elastomer slurry, wherein a Mooney stabilizer package comprising an amine-functional hindered amine stabilizer (HAS) and an acid scavenger can be added, together or separately, before the removing step are provided herein. The acid scavenger can comprise a protonatable atom with a pKa greater than the pKa of the HAS nitrogen atom. The separated brominated elastomer can have a delta Mooney of not more than about 10 Mooney units after ˜7 days at ˜80° C. Stabilized brominated elastomer compositions can be made using this method, and articles can be made from those compositions.

公开(公告)号：US20170226238A1

公开(公告)日：2017-08-10

申请号：US15500941

申请日：2015-09-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Leming Gu ,  Stephen T. Dalpe ,  Mauritz Kelchtermans ,  Sunny Jacob ,  John A. Clark ,  Michael F. McDonald ,  Torri L. Rose

IPC: C08F8/22

CPC classification number: C08F8/22 ,  C08F2810/50 ,  C08K5/13 ,  C08K5/134 ,  C08K5/3435 ,  C08F210/12 ,  C08F210/10 ,  C08F236/08 ,  C08L23/28

Abstract: This invention relates to a method of preparing a brominated elastomer having a stabilized Mooney viscosity. The method includes polymerizing isomonoolefins and at least one polymerizable unit to obtain an elastomer/polymer; brominating the elastomer/polymer to form a brominated elastomer effluent; neutralizing the brominated elastomer effluent to form a neutralized effluent; volatizing off the hydrocarbon solvent; and recovering a brominated elastomer. In at least one point of the process, preferably prior to any significant temperature change in the brominated polymer, a Mooney stabilizer is added into the system. Portions of the Mooney stabilizer may be added at multiple points into the process.