(19)

(11)

EP 0 981 577 A1

(12)

(43) Date of publication: 01.03.2000 Bulletin 2000/09 (21) Application number: 97922647.9 (22) Date of filing: 02.05.1997

(51) International Patent Classification (IPC)7: C08K 3/10 (86) International application number: PCT/US9707/524 (87) International publication number: WO 9850/460 (12.11.1998 Gazette 1998/45)

(84) Designated Contracting States: DE FR GB NL (71) Applicant: MRT, Inc. Dallas, TX 75240 (US)	(72) Inventor: HAMPTON, Thomas, C. Linden, MI 48451 (US) (74) Representative: Brunner, Michael John  GILL JENNINGS & EVERYBroadgate House7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)