(19)

(11)

EP 0 565 625 A1

(12)

(43) Date of publication: 20.10.1993 Bulletin 1993/42 (21) Application number: 92904154.0 (22) Date of filing: 02.01.1992

(51) International Patent Classification (IPC):  D21C 9/ 10( . ) D21C 9/ 153( . ) D21C 9/ 147( . ) D21C 9/ 16( . ) (86) International application number: PCT/US1992/000289 (87) International publication number: WO 1992/012289 (23.07.1992 Gazette 1992/19)

(84) Designated Contracting States: AT DE ES FR SE (30) Priority: 03.01.1991 US 19910637081 (71) Applicant: UNION CAMP PATENT HOLDING, INC. Wayne, NJ 07470 (US)

(72) Inventors: ALI, Omar F. Morrisville, PA 19067 (US) GRIGGS, Bruce F. Columbia, SC 29233 (US) GANDEK, Thomas P. Trenton, NJ 08618 (US) PIKULIN, Michael A. Bound Brook, NJ 08805 (US) ROSEN, Allen Lawrenceville, NJ 08648 (US) TERRIT, Stuart T. Elgin, SC 29045 (US) EACHUS, Spencer W. Allentown, NJ 08501 (US) WHITE, David E. Pennington, NJ 08534 (US) FRIEND, William H. Savannah, GA 31411 (US) (74) Representative: Timmermans, Anthonius C.Th., Ir., et al  European Patent Attorneys Octrooibureau Zuid P.O. Box 2287 NL-5600 CG Eindhoven NL-5600 CG Eindhoven (NL)