公开(公告)号：US20170009058A1

公开(公告)日：2017-01-12

申请号：US15113372

申请日：2014-12-15

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： Sunny Jacob ,  Michael F. McDonald ,  Adam H. Scott ,  Joel E. Schmieg ,  Timothy D. Shaffer ,  John A. Clark

IPC: C08K5/3435 ,  C08K3/00 ,  C08K5/3492 ,  C08K5/00

Abstract: This invention relates to a brominated elastomer composition comprising a free radical scavenger. The scavenger is present in the amount of at least about 0.05 wt % of the composition. The scavenger is added to the composition so that the Mooney viscosity of the composition does not increase by more than about 15% to about 40%, for up to about 15 days at 80° C. The scavenger can be a sterically hindered nitroxyl ether, a nitroxyl radical, or both.

Abstract translation: 本发明涉及包含自由基清除剂的溴化弹性体组合物。 清除剂的存在量为组合物的至少约0.05wt％。 将清除剂加入到组合物中，使得组合物的门尼粘度在80℃下不增加约15％至约40％，最多约15天。清除剂可以是空间位阻的硝酰基醚， 硝酰基或二者。

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：US10781295B2

公开(公告)日：2020-09-22

申请号：US15113372

申请日：2014-12-15

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Sunny Jacob ,  Michael F. McDonald, Jr. ,  Adam H. Scott ,  Joel E. Schmieg ,  Timothy D. Shaffer, Jr. ,  John A. Clark

IPC: C08K5/3435 ,  C08K5/3492 ,  C08K3/014 ,  C08K5/00

Abstract: This invention relates to a brominated elastomer composition comprising a free radical scavenger. The scavenger is present in the amount of at least about 0.05 wt % of the composition. The scavenger is added to the composition so that the Mooney viscosity of the composition does not increase by more than about 15% to about 40%, for up to about 15 days at 80° C. The scavenger can be a sterically hindered nitroxyl ether, a nitroxyl radical, or both.

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.