Olefin hydrogenation catalyst, process for hydrogenating polymer

Details Olefin hydrogenation catalyst, process for hydrogenating polymer Olefin hydrogenation catalyst, process for hydrogenating polymer

1985-04-10

1987-06-16

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525338, 585271, 585275, C08F 804

Patent

active

046737146

ABSTRACT:
An olefin hydrogenation catalyst containing as an essential component a compound represented by the formula: ##STR1## The catalyst is capable of selectively hydrogenating the unsaturated double bonds of the diene units of a conjugated diene polymer or copolymer having a number average molecular weight of 500 to 1,000,000, particularly a styrenebutadiene block copolymer comprising at least one polymer block A composed mainly of styrene and at least one polymer block B composed mainly of 1,3-butadiene and/or isoprene. The hydrogenated block copolymer obtained from such selective hydrogenation is useful as an elastomer, a thermoplastic elastomer or a thermoplastic resin having excellent weather resistance and oxidation resistance.

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Nature of the Activity and the Kinetics of Cyclohexene Hydrogenation by the Catalystic System (C.sub.5 H.sub.5).sub.2 TiCl.sub.2 --LiC.sub.4 H.sub.9 Shmidt et al, Zhadanov University, Reaction Kinetics and Catalysts Letters, vol. 5, No. 2. pp. 101-106, (1976).
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Photocatalytic Homogeneous Hydrogenation of Olegins with Alkyltitanocene Compounds, Edmund Samuel, pp. C65-C68, 1980.
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