(19)

(11)

EP 0 306 493 A1

(12)

(43) Date of publication: 15.03.1989 Bulletin 1989/11 (21) Application number: 87903218.0 (22) Date of filing: 14.05.1987

(51) International Patent Classification (IPC):  C11D 1/ 65( . ) C11D 1/ 83( . ) C11D 17/ 00( . ) C11D 1/ 14( . ) C11D 1/ 28( . ) C11D 1/ 34( . ) C11D 1/ 52( . ) C11D 1/ 78( . ) C11D 1/ 655( . ) C11D 11/ 04( . ) C11D 1/ 12( . ) C11D 1/ 22( . ) C11D 1/ 29( . ) C11D 1/ 44( . ) C11D 1/ 74( . ) (86) International application number: PCT/AU1987/000138 (87) International publication number: WO 1987/006950 (19.11.1987 Gazette 1987/25)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 14.05.1986 AU 19860005897 (71) Applicants: DONNELLY, Dawn, Elizabeth GLOSSODIA, NSW 2756 (AU) MACDOUGALL, Josephine Kangaroo Point, NSW 2224 (AU)	(72) Inventor: DONNELLY, Robert, Francis Glossodia, NSW 2756 (AU) (74) Representative: Moore, Derek  Jensen & Son 70 Paul Street London EC2A 4NA London EC2A 4NA (GB)