Global Patent Index - EP 0262040 B1

EP 0262040 B1 19921111 - PROCESS FOR TREATING A PAPER PULP WITH AN ENZYMATIC SOLUTION

Title (en)

PROCESS FOR TREATING A PAPER PULP WITH AN ENZYMATIC SOLUTION

Publication

EP 0262040 B1 19921111 (FR)

Application

EP 87402097 A 19870921

Priority

FR 8613208 A 19860922

Abstract (en)

[origin: EP0262040A1] According to the process, an enzyme preparation containing cellulases and/or hemicellulases is reacted with a homogeneous aqueous suspension of the papermaking pulp exhibiting a Schopper-Riegler (SR) value determined in accordance with NFQ standard 50 003 of at least 25. <??>Application of the process for the treatment of a papermaking pulp based on recycled fibres.

IPC 1-7

C12S 3/08; D21C 9/00

IPC 8 full level

D21C 5/02 (2006.01); C12S 3/08 (2006.01); D21C 5/00 (2006.01); D21C 9/00 (2006.01); D21H 21/10 (2006.01); D21H 23/18 (2006.01)

CPC (source: EP US)

D21C 5/005 (2013.01 - EP US)

Citation (examination)

  • Paper Vocabulary, 1ère éd, janvier 1980, Stockholm, pages 112, 145, 229.
  • J.P.Casey "Pulp and Paper; Chemistry and Chemical Technology, 3ème édition, volume II, John Wiley & Sons, New York (a) Chapitre 6, pages 855-860; (b) Chapitre 7, pages 939, 940

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0262040 A1 19880330; EP 0262040 B1 19921111; AT E82339 T1 19921115; CA 1340724 C 19990907; DE 3782602 D1 19921217; DE 3782602 T2 19930603; ES 2043679 T3 19940101; FI 87242 B 19920831; FI 87242 C 19921210; FI 874113 A0 19870921; FI 874113 A 19880323; FR 2604198 A1 19880325; FR 2604198 B1 19890707; GR 3007008 T3 19930730; JP H07107234 B2 19951115; JP S63145495 A 19880617; NO 172858 B 19930607; NO 172858 C 19930915; NO 873565 D0 19870824; NO 873565 L 19880323; SU 1701117 A3 19911223; US 4923565 A 19900508; US 5308449 A 19940503

DOCDB simple family (application)

EP 87402097 A 19870921; AT 87402097 T 19870921; CA 547439 A 19870921; DE 3782602 T 19870921; ES 87402097 T 19870921; FI 874113 A 19870921; FR 8613208 A 19860922; GR 930400248 T 19930210; JP 23503787 A 19870921; NO 873565 A 19870824; SU 4203419 A 19870921; US 91587992 A 19920720; US 9978687 A 19870922