(19)

(11)

EP 0 434 763 A1

(12)

(43) Date of publication: 03.07.1991 Bulletin 1991/27 (21) Application number: 89911512.0 (22) Date of filing: 19.07.1989

(51) International Patent Classification (IPC):  C08K 3/ 20( . ) C08L 27/ 08( . ) C08K 3/ 22( . ) (86) International application number: PCT/US1989/003117 (87) International publication number: WO 1991/001347 (07.02.1991 Gazette 1991/04)

(84) Designated Contracting States: BE CH DE FR GB IT LI NL SE (71) Applicant: THE DOW CHEMICAL COMPANY Midland, Michigan 48640 (US)	(72) Inventors: BETSO, Stephen, R. Midland, MI 48640 (US) FOYE, Duane, F. Merrill, MI 48637 (US) (74) Representative: Burford, Anthony Frederick, et al  W.H. Beck, Greener & Co. 7 Stone Buildings Lincoln's Inn London WC2A 3SZ London WC2A 3SZ (GB)