(19)

(11)

EP 0 610 305 A1

(12)

(43) Date of publication: 17.08.1994 Bulletin 1994/33 (21) Application number: 92922153.0 (22) Date of filing: 02.11.1992

(51) International Patent Classification (IPC):  C04B 41/ 47( . ) C08L 95/ 00( . ) C04B 41/ 62( . ) (86) International application number: PCT/GB1992/002016 (87) International publication number: WO 1993/009070 (13.05.1993 Gazette 1993/12)

(84) Designated Contracting States: DE ES FR GB NL PT (30) Priority: 02.11.1991 GB 19910023377 (71) Applicant: EPRO UK LIMITED Ossett, West Yorkshire WF5 9NJ (GB)	(72) Inventor: TOWNEND, Ian Restoration House Warneford Avenue West Yorkshire WF5 9NJ (GB) (74) Representative: Orr, William McLean  URQUHART-DYKES & LORD 5th Floor, Tower House Merrion Way Leeds West Yorkshire, LS2 8PA Leeds West Yorkshire, LS2 8PA (GB)