Hydrogenation catalyst composition and method for...

Details Hydrogenation catalyst composition and method for... Hydrogenation catalyst composition and method for...

2007-12-19

2009-11-03

Choi, Ling-Siu (Department: 1796)

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

Synthetic resins

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

C525S357000, C525S332800, C525S332900, C525S333100, C525S333200, C525S331700

Reexamination Certificate

active

07612148

ABSTRACT:
A method for hydrogenation of a conjugated diene polymer is provided. The conjugated diene polymer in an inert organic solvent is brought into contact with hydrogen in the presence of a hydrogenation catalyst composition to selectively hydrogenate the unsaturated double bonds in the conjugated diene units of the conjugated diene polymer. The hydrogenation catalyst composition includes: (a) a titanium compound; (b) a compound represented by formula (II) or formula (III):wherein R is C1-C12alkyl, C3-C12cycloalkyl, aryl or alkyl aryl, M is C1-C12alkyl, C1-C12alkoxy, aryl, alkyl aryl, phenoxy or hydroxyl, and n=1˜3; and (c) a alkylaluminum compound.

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