Process for hydrogenating conjugated diene polymer

Details Process for hydrogenating conjugated diene polymer Process for hydrogenating conjugated diene polymer

1997-10-09

1999-03-23

Lipman, Bernard

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

Synthetic resins

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

5253328, 5253329, 5253331, 5253332, 525339, C08F 804

Patent

active

058861084

ABSTRACT:
A process for hydrogenating a conjugated diene polymer, which process comprises the steps of: deactivating a conjugated diene polymer which is prepared by using an organic alkali metal compound as a polymerization initiator by adding a deactivator; and contacting the deactivated diene polymer with hydrogen in an inert hydrocarbon solvent to hydrogenate the double bond of the deactivated diene polymer, wherein the hydrogenation is carried out (i) in the presence of a catalyst selected from organometallic compounds represented by the following formula: ##STR1## wherein the symbols are defined in the specification and (ii) under a condition satisfying the following relationship:

REFERENCES:
patent: 5244980 (1993-09-01), Gibler et al.
patent: 5334566 (1994-08-01), Gibler et al.

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