Process for producing modified diene polymer rubber

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

2003-12-22

2008-03-04

Rabago, Roberto (Department: 1713)

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

Synthetic resins

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

C525S332900, C525S342000, C525S374000, C525S375000, C525S379000, C525S383000

Reexamination Certificate

active

07339005

ABSTRACT:
There is provided a process for producing a both end-modified diene polymer rubber comprising the steps of:(1) polymerizing a conjugated diene monomer or a combination thereof with an aromatic vinyl monomer in the presence of a compound represented by the following formula (1) to produce an alkali metal end-carrying active polymer, and(2) reacting the alkali metal end-carrying active polymer with an amine compound, a ketone compound, an acrylamide compound, a heterocyclic compound or a silyl compound represented by specific formulas, respectively:in-line-formulae description="In-line Formulae" end="lead"?R—(CH2)n—X-M  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein R is a functional group containing a substituent group-carrying nitrogen atom, X is a saturated or unsaturated hydrocarbon group comprising from 0 to 10 conjugated diene monomer units or aromatic vinyl monomer units, n is an integer of from 1 to 10, and M is an alkali metal.

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