(19)

(11)

EP 0 857 165 A1

(12)

(43) Date of publication: 12.08.1998 Bulletin 1998/33 (21) Application number: 96911054.0 (22) Date of filing: 25.04.1996

(51) International Patent Classification (IPC):  C04B 26/ 12( . ) C08G 12/ 12( . ) (86) International application number: PCT/GB1996/000996 (87) International publication number: WO 1996/033958 (31.10.1996 Gazette 1996/48)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 25.04.1995 GB 19950008355 (71) Applicant: Moody, John Rutherford Osney, Oxford OX2 0AU (GB)	(72) Inventor: Moody, John Rutherford Osney, Oxford OX2 0AU (GB) (74) Representative: Andrews, Timothy Stephen  Marks & Clerk, 57-60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)