(19)

(11)

EP 0 491 870 A1

(12)

(43) Date of publication: 01.07.1992 Bulletin 1992/27 (21) Application number: 90915264.0 (22) Date of filing: 12.09.1990

(51) International Patent Classification (IPC):  C08K 5/ 521( . ) C08K 5/ 52( . ) C08L 63/ 00( . ) C08L 101/ 00( . ) C08G 59/ 00( . ) C08K 5/ 527( . ) C08L 67/ 06( . ) (86) International application number: PCT/US1990/005158 (87) International publication number: WO 1991/004295 (04.04.1991 Gazette 1991/08)

(84) Designated Contracting States: BE DE DK ES FR GB IT NL SE (30) Priority: 15.09.1989 US 19890408143 (71) Applicant: Great Lakes Chemical Corporation West Lafayette, IN 47906 (US)	(72) Inventors: TERMINE, Enrico, John Lafayette, IN 47905 (US) RAVSTRITSKY, Nicolai, Alexander Lafayette, IN 47905 (US) TAYLOR, Kevin, Gerard West Lafayette, IN 47906 (US) (74) Representative: Atkinson, Peter Birch  Marks & Clerk Suite 301 Sunlight House Quay Street Manchester M3 3JY Manchester M3 3JY (GB)