(19)

(11)

EP 0 283 497 A1

(12)

(43) Date of publication: 28.09.1988 Bulletin 1988/39 (21) Application number: 87906204.0 (22) Date of filing: 24.09.1987

(51) International Patent Classification (IPC):  C04B 26/ 18( . ) C08K 7/ 14( . ) C08K 3/ 00( . ) (86) International application number: PCT/GB1987/000672 (87) International publication number: WO 1988/002354 (07.04.1988 Gazette 1988/08)

(84) Designated Contracting States: AT BE CH DE FR IT LI LU NL SE (30) Priority: 25.09.1986 GB 19860023057 (71) Applicant: ADVANCED PLASTICS (SOUTH WALES) LIMITED Cardiff, South Glamorgan (GB)	(72) Inventor: FRY, David, Philip Cardiff Glamorgan CF4 1QB (GB) (74) Representative: James, Michael John Gwynne, et al  Wynne-Jones, Lainé & James Morgan Arcade Chambers 33, St. Mary Street Cardiff Clamorgan CF1 2AB Cardiff Clamorgan CF1 2AB (GB)