(19)

(11)

EP 0 712 452 A1

(12)

(43) Date of publication: 22.05.1996 Bulletin 1996/21 (21) Application number: 94924565.0 (22) Date of filing: 02.08.1994

(51) International Patent Classification (IPC):  D21C 5/ 02( . ) (86) International application number: PCT/US1994/008774 (87) International publication number: WO 1995/004187 (09.02.1995 Gazette 1995/07)

(84) Designated Contracting States: DE ES FR GB IT NL SE (30) Priority: 02.08.1993 US 19930100886 (71) Applicant: INTERNATIONAL PAPER COMPANY Purchase New York 10577 (US)	(72) Inventors: SRIVASTA, Narendra, R. Ramsey, NJ 07446 (US) MARKHAM, Larry, D. Mobile, AL 36693 (US) WESOLOWSKI, Richard, R. Pine Island, NY 10969 (US) (74) Representative: Kearney, Kevin David Nicholas, et al  KILBURN & STRODE 30 John Street London, WC1N 2DD London, WC1N 2DD (GB)