Hydrogenation catalyst composition and process for...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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Details

C525S332800, C525S333200, C525S940000, C502S103000, C502S117000, C502S152000

Reexamination Certificate

active

11086915

ABSTRACT:
A process for hydrogenation of an unsaturated 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: (a) a titanium compound; (b) a compound represented by formula (II) or formula (III):wherein L1is a Group IVA element, L2is a Group IVA element, R3is C1–C12alkyl or C1–C12cycloalkyl, R4is C2–C12alkyl or C3–C12cycloalkyl, and X1, X2, and X3can be the same or different and are C1–C12alkyl, C1–C12alkoxy, C1–C12cycloalkoxy, phenyl, or phenoxy; and (c) a trialkylaluminum compound.

REFERENCES:
patent: 4980421 (1990-12-01), Teramoto et al.
patent: 5244980 (1993-09-01), Gibler et al.
patent: 5270274 (1993-12-01), Hashiguchi et al.
patent: 5886108 (1999-03-01), Miyamoto et al.
patent: 5948869 (1999-09-01), Vallieri et al.
patent: 5985995 (1999-11-01), Calle et al.
patent: 6075103 (2000-06-01), Marks et al.
patent: 6313230 (2001-11-01), Tsai et al.
patent: 0 434 469 (1991-06-01), None
patent: 0 544 304 (1993-06-01), None

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