Petroleum resins of improved color and process for making the sa

Details Petroleum resins of improved color and process for making the sa Petroleum resins of improved color and process for making the sa

1990-07-02

1991-12-31

Teskin, Fred

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

Synthetic resins

Treating polymer containing material or treating a solid...

5253279, 525340, 526290, 526237, C08F 602, C08F 840

Patent

active

050773860

ABSTRACT:
An petroleum resin of improved color and process for making the same are provided. The improvement in color is the result of a "dry" quench process, in which the polymerizate of an olefinic, diolefinic, aromatic or mixed hydrocarbon feedstock polymerized in the presence of a Friedel-Crafts catalyst is quenched by admixing the polyemrizate with a phosphite instead of the familiar water wash quenching procedure.

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