(19)

(11)

EP 0 513 074 A1

(12)

(43) Date of publication: 19.11.1992 Bulletin 1992/47 (21) Application number: 91902959.0 (22) Date of filing: 31.01.1991

(51) International Patent Classification (IPC):  C09K 21/ 02( . ) (86) International application number: PCT/EP1991/000209 (87) International publication number: WO 1991/011498 (08.08.1991 Gazette 1991/18)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 01.02.1990 GB 19900002256 (71) Applicant: HIGHPOINT RENDEL PROJECTS LIMITED New Street, Birmingham B2 4QJ (GB)	(72) Inventor: DEOGON, Malkit, Singh Middlesex UB2 5JT (GB) (74) Representative: Marsden, John Christopher  Frank B. Dehn & Co. Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)