PROCESS FOR PREPARING A BROMINATED ELASTOMER WITH IMPROVED MOONEY VISCOSITY STABILITY

Title:

PROCESS FOR PREPARING A BROMINATED ELASTOMER WITH IMPROVED MOONEY VISCOSITY STABILITY

Document Type and Number:

WIPO Patent Application WO/2016/053594

Kind Code:

A8

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.

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Inventors:

DALPE STEPHEN T (US)
KELCHTERMANS MAURITZ M (BE)
JACOB SUNNY (US)
MCDONALD JR MICHAEL F (US)
CLARK JOHN A (US)
ROSE TORRI L (US)
GU LEMING (US)

Application Number:

PCT/US2015/049641

Publication Date:

December 15, 2016

Filing Date:

September 11, 2015

Export Citation:

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Assignee:

EXXONMOBIL CHEMICAL PATENTS INC (US)

International Classes:

C08F8/20; B60C1/00; C08F210/10; C08F210/14; C08K5/00; C08L23/22; C08L23/28; C08F8/22; C08F210/12; C08F212/12; C08F236/08

Attorney, Agent or Firm:

KRAWCZYK, Nancy, T. et al. (P.O. Box 2149Baytown, TX, US)

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