Process for producing modified polymer rubber

Details Process for producing modified polymer rubber Process for producing modified polymer rubber

2005-04-20

2009-12-01

Wu, David (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S102000, C525S245000, C525S254000, C525S274000, C525S288000

Reexamination Certificate

active

07625981

ABSTRACT:
A process for producing a modified polymer rubber comprising the steps of:(1) polymerizing a conjugated diene monomer or a combination thereof with an aromatic vinyl monomer in a hydrocarbon solvent, in the presence of an alkali metal catalyst or a specified alkali metal compound, to form an alkali metal end-carrying active polymer, and(2) reacting the alkali metal end-carrying active polymer with a specified isocyanurate compound or a combination thereof with a specified coupling agent in a hydrocarbon solvent.

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