Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1985-12-20
1987-05-12
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
25240061, 25240062, 260414, C08K 513
Patent
active
046651179
ABSTRACT:
In accordance with the present invention, it has been found that the color and stability of basic alkali and alkaline earth metal salts prepared from mixtures containing a phenol can be improved by conducting the reaction in the absence of free oxygen and thereafter post-treating the reaction product with at least one compound capable of displacing the hydrogen of the phenolic hydroxyl groups present in the mixture while maintaining oxygen free atmosphere. Generally, the metal salts will be alkaline earth metal salts of phenols such as calcium and barium salts. A preferred example of the compound capable of displacing the hydrogen of the phenolic hydroxyl group is an epoxide such as ethylene oxide and propylene oxide.
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Collins Forrest L.
Cordek James L.
Hoke Veronica P.
Polyn Denis A.
The Lubrizol Corporation
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