Process for hydrogenation of conjugated diene polymer

Details Process for hydrogenation of conjugated diene polymer Process for hydrogenation of conjugated diene polymer

2005-04-19

2005-04-19

Choi, Ling-Sui (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...

C525S332800, C525S332900, C525S333100, C525S333200, C525S339000, C525S331900

Reexamination Certificate

active

06881797

ABSTRACT:
A process for hydrogenation of a conjugated diene polymer. 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: (I) a titanium compound; (II) a compound represented by formula (II):wherein L is a Group IVB element, R is C1-C12alkyl or C1-C12cycloalkyl, X can be the same or different and is C1-C12alkyl, C1-C12alkoxy, C1-C12cycloalkoxy, halogen, or carbonyl; and (III) a trialkylaluminum compound.

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