(19)

(11)

EP 0 502 008 A1

(12)

(43) Date of publication: 09.09.1992 Bulletin 1992/37 (21) Application number: 90917003.0 (22) Date of filing: 20.11.1990

(51) International Patent Classification (IPC):  C10L 1/ 12( . ) C10G 53/ 14( . ) C10L 1/ 188( . ) C10M 175/ 02( . ) C10G 27/ 12( . ) C10L 1/ 18( . ) C10L 1/ 24( . ) C10N 30/ 00( . ) (86) International application number: PCT/GB1990/001786 (87) International publication number: WO 1991/007475 (30.05.1991 Gazette 1991/12)

(84) Designated Contracting States: BE DE DK ES FR GB GR IT NL (30) Priority: 22.11.1989 GB 19890026436 (71) Applicant: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and London SW1A 2HB (GB)	(72) Inventor: MARSHMAN, Sheila, Joyce Woking Surrey GU21 4UU (GB) (74) Representative: Lockwood, Peter Brian  Ministry of Defence, Procurement Executive, Patents 1, Room 2121, Empress State Building, Lillie Road London SW6 1TR London SW6 1TR (GB)