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(11)

EP 0 641 367 A1

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(43) Date of publication: 08.03.1995 Bulletin 1995/10 (21) Application number: 93911395.0 (22) Date of filing: 13.04.1993

(51) International Patent Classification (IPC):  C08L 23/ 06( . ) C08L 51/ 00( . ) C08L 23/ 10( . ) C08L 53/ 02( . ) (86) International application number: PCT/AU1993/000166 (87) International publication number: WO 1993/021269 (28.10.1993 Gazette 1993/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 09.04.1992 AU 19920001806 (71) Applicant: ICI AUSTRALIA OPERATIONS PROPRIETARY LIMITED Melbourne Victoria 3000 (AU)	(72) Inventors: O'LEARY, John Northcote, VIC 3070 (AU) MUSGRAVE, Stuart Pascoe Vale, VIC 3044 (AU) (74) Representative: Bannerman, David Gardner, et al  Withers & Rogers 4 Dyer's Buildings Holborn London, EC1N 2JT London, EC1N 2JT (GB)