(19)

(11)

EP 0 202 277 A1

(12)

(43) Date of publication: 26.11.1986 Bulletin 1986/48 (21) Application number: 85905721.0 (22) Date of filing: 12.11.1985

(51) International Patent Classification (IPC):  C08G 59/ 00( . ) (86) International application number: PCT/US1985/002210 (87) International publication number: WO 1986/003210 (05.06.1986 Gazette 1986/12)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI NL SE (30) Priority: 19.11.1984 US 19840672775 06.08.1985 US 19850762971 09.09.1985 US 19850773500 (71) Applicant: THE DOW CHEMICAL COMPANY Midland Michigan 48640-1967 (US)	(72) Inventors: WANG, Chun, S. Lake Jackson, TX 77566 (US) CHEN, Wuu, N. Lake Jackson, TX 77566 (US) BOWDEN, Robert, L. Angleton, TX 77515 (US) (74) Representative: Sternagel, Hans-Günther, Dr., et al  Patentanwälte Dr. Michael Hann Dr. H.-G. Sternagel Sander Aue 30 D-51465 Bergisch Gladbach D-51465 Bergisch Gladbach (DE)