Process for making vinyl aromatic/allyl alcohol copolymers

Details Process for making vinyl aromatic/allyl alcohol copolymers Process for making vinyl aromatic/allyl alcohol copolymers

1997-07-08

1999-03-23

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 87, 526227, 526230, 526232, 526332, 526333, 526347, C08F21608, C08F21208

Patent

active

058861149

ABSTRACT:
An improved process for making vinyl aromatic/allylic alcohol copolymers is disclosed. Gradual addition of a free-radical initiator during the course of the polymerization results in a substantial increase in the polymer yield obtained compared with the yield from conventional processes in which all of the free-radical initiator is charged initially. High yields are obtained when the monomer mole ratios are adjusted to produce styrene-allyl alcohol copolymers having a hydroxyl number in the 50-150 mg KOH/g range. Copolymers made by the process are valuable coating resins.

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patent: 5382642 (1995-01-01), Guo
patent: 5444141 (1995-08-01), Guo

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