Method of preparation of coupled branched and linear polymer...

Details Method of preparation of coupled branched and linear polymer... Method of preparation of coupled branched and linear polymer...

2005-03-29

2005-03-29

Lu, Caixia (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...

C525S332300, C525S342000, C525S370000, C525S371000, C526S173000, C526S335000

Reexamination Certificate

active

06872783

ABSTRACT:
A continuous process for manufacture of a polymer including branched and linear components comprising first polymerizing conjugated diene(s) in the presence of an organometallic initiator to a conversion that is at least 90% complete. A coupling agent is added to obtain a polymer including branched and linear components. The coupling agent is added at a ratio of about 0.3 to about 0.6 coupling equivalents to initiator equivalents.

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