(19)

(11)

EP 0 824 572 A1

(12)

(43) Date of publication: 25.02.1998 Bulletin 1998/09 (21) Application number: 95918853.0 (22) Date of filing: 04.05.1995

(51) International Patent Classification (IPC):  C09C 1/ 50( . ) (86) International application number: PCT/US1995/005104 (87) International publication number: WO 1996/034918 (07.11.1996 Gazette 1996/49)

(84) Designated Contracting States: DE ES FR GB IT NL (71) Applicant: CABOT CORPORATION Boston, MA 02109-1806 (US)	(72) Inventors: IIDA, Katsu Chiba-ken 297 (JP) SASAKI, Mitsuyuki Chiba-shi, Chiba-ken 2657 (JP) TAKAHASHI, Makoto, Dia-Palace Ichihara-shi, Chiba-ken 290 (JP) ADACHI, Ryoichi Chiba-shi, Chiba-ken 263 (JP) (74) Representative: Attfield, Donald James  Barker, Brettell & Duncan 138 Hagley Road Edgbaston Birmingham B16 9PW Birmingham B16 9PW (GB)