Functionalization of living rubbery polymers with nitrones

Details Functionalization of living rubbery polymers with nitrones Functionalization of living rubbery polymers with nitrones

2006-10-24

2006-10-24

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...

C525S332100, C525S332200, C525S322000, C525S332900, C525S333100, C525S333200, C525S377000

Reexamination Certificate

active

07125934

ABSTRACT:
This invention discloses a low cost process that can be used to functionalize living rubbery polymers with terminal nitroxide end-groups to promote interaction between the polymer end-groups and surface functionalities commonly found on carbon black and silica fillers. Such functionalization makes the rubbery polymer more desirable for used in tire tread compositions and other rubber products. This technique more specifically involves reacting a metal terminated living polydiene rubber with a nitrone. The metal will typically be lithium and the polydiene rubber will typically be a polybutadiene rubber, a polyisoprene rubber, a styrene-butadiene rubber, a styrene-isoprene-butadiene rubber, an isoprene-butadiene rubber, or a styrene-isoprene rubber.

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