(19)

(11)

EP 0 072 810 A1

(12)

(43) Date of publication: 02.03.1983 Bulletin 1983/09 (21) Application number: 82900379.0 (22) Date of filing: 12.02.1982

(51) International Patent Classification (IPC):  C08K 3/ 00( . ) C08L 1/ 00( . ) C08L 21/ 00( . ) C08L 27/ 00( . ) C08L 33/ 02( . ) C09K 3/ 10( . ) C08K 3/ 08( . ) C08L 7/ 00( . ) C08L 23/ 00( . ) C08L 33/ 00( . ) C08L 101/ 00( . ) (86) International application number: PCT/GB1982/000036 (87) International publication number: WO 1982/002721 (19.08.1982 Gazette 1982/20)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 14.02.1981 GB 19810004684 (71) Applicant: W.R. GRACE & CO. New York New York 10036 (US)	(72) Inventors: SAMUEL, David Nuttall Cambridgeshire (GB) SINNOTT, Kenneth Martin Huntingdon Cambridgeshire (GB)