(19)

(11)

EP 0 689 573 A1

(12)

(43) Date of publication: 03.01.1996 Bulletin 1996/01 (21) Application number: 94909981.0 (22) Date of filing: 17.03.1994

(51) International Patent Classification (IPC):  C08K 3/ 34( . ) C09K 21/ 02( . ) C08K 3/ 40( . ) C09K 21/ 14( . ) (86) International application number: PCT/GB1994/000550 (87) International publication number: WO 1994/021748 (29.09.1994 Gazette 1994/22)

(84) Designated Contracting States: DE FR IT NL (30) Priority: 18.03.1993 GB 19930005546 (71) Applicant: BTR plc London SW1P 2PL (GB)	(72) Inventors: GANENDRAN, Arasapillai, Nadarajah Newhall Swadlincote Derby DE11 0UX (GB) NEAVE, John 28 Hillcrest Staffordshire DE13 9JD (GB) (74) Representative: Sparrow, Alvar Alfred, et al  BTR Group Patent & Trade Mark Service P.O. Box 504 Erdington Birmingham B24 9QH Erdington Birmingham B24 9QH (GB)