Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1992-05-28
1993-09-07
Lipman, Bernard
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524572, 5253329, 5253309, 5253331, 5253332, 525387, 5253293, 5253317, C08F 800
Patent
active
052429610
ABSTRACT:
The present invention is an improvement upon a process for hydrogenating a diene polymer by contacting the polymer in the presence of hydrogen with a titanium hydrogenation catalyst. The improvement comprises preventing discoloration of the hydrogenated polymer by treating it with water, a peroxide or alcohol in the absence of oxygen and adding a non-phenolic antioxidant to the polymer.
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Chamberlain Linda R.
Gibler Carma J.
Prado Miguel
Haas Donald F.
Lipman Bernard
Shell Oil Company
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