Global Patent Index - EP 0515362 A1

EP 0515362 A1 19921202 - BLEACHING OF LIGNOCELLULOSIC MATERIAL WITH DIOXIRANES.

Title (en)

BLEACHING OF LIGNOCELLULOSIC MATERIAL WITH DIOXIRANES.

Title (de)

VERFAHREN ZUM BLEICHEN VON LIGNOZELLULOSEHALTIGEM MATERIAL MIT DIOXIRANEN.

Title (fr)

BLANCHIMENT DE MATERIAU LIGNOCELLULOSIQUE A L'AIDE DE DIOXIRANES.

Publication

EP 0515362 A1 19921202 (EN)

Application

EP 90903735 A 19900216

Priority

CA 9000052 W 19900216

Abstract (en)

[origin: WO9112369A1] A process of bleaching a chemical pulp with a dioxirane produces a pulp of good quality and reduces environmental concerns in so doing. A chemical pulp is contacted with a dioxirane, and either with or without known bleaching agents, in combination or sequence.

Abstract (fr)

Procédé de blanchiment de pâte de cellulose chimique à l'aide d'une dioxirane permettant l'obtention d'une pâte de bonne qualité et la réduction des effets nuisibles sur l'environnement. On place la pâte de cellulose chimique en contact avec la dioxirane accompagnée facultativement d'agents de blanchiment, en combinaison ou en séquence.

IPC 1-7

D21C 9/14; D21C 9/16

IPC 8 full level

D21C 9/10 (2006.01); D21C 9/14 (2006.01); D21C 9/16 (2006.01)

CPC (source: EP)

D21C 9/144 (2013.01); D21C 9/16 (2013.01); D21C 9/163 (2013.01)

Citation (search report)

See references of WO 9112369A1

Designated contracting state (EPC)

DE FR SE

DOCDB simple family (publication)

WO 9112369 A1 19910822; AU 5168690 A 19910903; AU 641640 B2 19930930; BR 9007993 A 19921013; DE 69008870 D1 19940616; DE 69008870 T2 19940818; EP 0515362 A1 19921202; EP 0515362 B1 19940511; FI 102195 B1 19981030; FI 102195 B 19981030; FI 923644 A0 19920814; FI 923644 A 19920814; JP H05504173 A 19930701; JP H0718113 B2 19950301; NO 923145 D0 19920812; NO 923145 L 19920812

DOCDB simple family (application)

CA 9000052 W 19900216; AU 5168690 A 19900216; BR 9007993 A 19900216; DE 69008870 T 19900216; EP 90903735 A 19900216; FI 923644 A 19920814; JP 50385590 A 19900216; NO 923145 A 19920812