(19)

(11)

EP 0 032 505 A1

(12)

(43) Date of publication: 29.07.1981 Bulletin 1981/30 (21) Application number: 80901590.0 (22) Date of filing: 14.07.1980

(51) International Patent Classification (IPC):  C08C 1/ 15( . ) (86) International application number: PCT/US1980/000877 (87) International publication number: WO 1981/000361 (19.02.1981 Gazette 1981/05)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL SE (30) Priority: 30.07.1979 US 19790061789 (71) Applicant: AMERICAN HOSPITAL SUPPLY CORPORATION Evanston, IL 60201 (US)	(72) Inventor: JOUNG, John J. La Canada, CA 91011 (US) (74) Representative: Seaborn, George Stephen, et al  c/o Edward Evans & Co. Chancery House 53-64 Chancery Lane London WC2A 1SD London WC2A 1SD (GB)