(19)

(11)

EP 0 568 528 A1

(12)

(43) Date of publication: 10.11.1993 Bulletin 1993/45 (21) Application number: 91905558.0 (22) Date of filing: 23.01.1991

(51) International Patent Classification (IPC):  C08F 279/ 02( . ) C08G 81/ 02( . ) C08L 49/ 00( . ) C08L 57/ 04( . ) C08L 101/ 02( . ) C08F 279/ 00( . ) C08L 21/ 00( . ) C08L 51/ 04( . ) C08L 63/ 00( . ) (86) International application number: PCT/US1991/000474 (87) International publication number: WO 1992/013015 (06.08.1992 Gazette 1992/21)

(84) Designated Contracting States: BE DE NL (71) Applicant: THE DOW CHEMICAL COMPANY Midland, Michigan 48640 (US)	(72) Inventor: HENTON, David, E. Midland, MI 48640 (US) (74) Representative: Raynor, John  W.H. Beck, Greener & Co 7 Stone Buildings Lincoln's Inn London WC2A 3SZ London WC2A 3SZ (GB)