Method of hydrogenation of living polymer

Details Method of hydrogenation of living polymer Method of hydrogenation of living polymer

1998-01-26

2000-02-01

Wu, David W.

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

Synthetic resins

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

525338, 525314, 502113, 502117, C08C 1902, C08F29300, B01J 3100

Patent

active

060204397

ABSTRACT:
A method for hydrogenating living polymers that include mainly conjugated double bond monomers and aromatic vinyl monomers. At least one conjugated diene compound is polymerized or copolymerized in an inert solvent by using a polymerization initiator of organic alkali metal. The produced polymer is contacted with hydrogen in the presence of a catalyst. The catalyst is formed of a cyclopentadienyl titanium compound represented by: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from halogen groups, C.sub.1 -C.sub.8 alkyl groups, C.sub.1 -C.sub.8 alkoxy groups, C.sub.6 -C.sub.20 aryloxy groups, C.sub.6 -C.sub.20 cycloalkyl groups, silyl groups, and carbonyl groups. A cocatalyst is provided of alkoxylithium compound represented by:

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