(19)

(11)

EP 0 504 245 A1

(12)

(43) Date of publication: 23.09.1992 Bulletin 1992/39 (21) Application number: 91900880.0 (22) Date of filing: 04.12.1990

(51) International Patent Classification (IPC):  D21H( . ) C09D 1/ 00( . ) C09D 7/ 12( . ) D21H 19/ 36( . ) D21H 19/ 58( . ) D21H 19/ 64( . ) D21H 19/ 44( . ) C09D 7/ 02( . ) D21H 11/ 14( . ) D21H 19/ 56( . ) D21H 19/ 62( . ) (86) International application number: PCT/GB1990/001883 (87) International publication number: WO 1991/008341 (13.06.1991 Gazette 1991/13)

(84) Designated Contracting States: AT BE CH DE DK ES FR GR IT LI LU NL SE (30) Priority: 06.12.1989 GB 19890027536 (71) Applicant: ECC INTERNATIONAL LIMITED Theale, Reading, Berkshire RG7 4SA (GB)	(72) Inventors: HUSBAND, John, Claude St. Austell Cornwall PL25 4DJ (GB) BOWN, Richard St. Austell Cornwall PL26 6HT (GB) DRAGE, Pamela, Gillian Cornwall PL24 2AF (GB) (74) Representative: Nash, David Allan  Haseltine Lake & Co. 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)