Title:
PROCESS FOR MAKING VINYL AROMATIC/ALLYLIC ALCOHOL COPOLYMERS
Document Type and Number:
WIPO Patent Application WO1998017697
Kind Code:
A3
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.
Inventors:
GUO SHAO-HUA
Application Number:
PCT/EP1997/005730
Publication Date:
July 09, 1998
Filing Date:
October 17, 1997
Export Citation:
Assignee:
ARCO CHEM TECH (US)
ARCO CHEM TECH NL BV (US)
ARCO CHEM TECH NL BV (US)
International Classes:
C08F2/00; C08F212/02; C08F212/04; C08F216/08; (IPC1-7): C08F212/04; C08F216/08
Foreign References:
| US2894938A | 1959-07-14 | |||
| US5444141A | 1995-08-22 |
Other References:
CHEMICAL ABSTRACTS, vol. 107, no. 20, 16 November 1987, Columbus, Ohio, US; abstract no. 177156, OKITSU KIYOSHI: "MANUFACTURE OF ALLYL ALCOHOL-STYRENE COPOLYMERS" page 45; column 2; XP002063602
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