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1. CA2178079 - PROCEDE DE DESINTEGRATION DE PAPIER A RESISTANCE HUMIDE

Office
Canada
Numéro de la demande 2178079
Date de la demande 17.08.1994
Numéro de publication 2178079
Date de publication 02.03.1995
Type de publication A1
CIB
D21C 5/02
DTEXTILES; PAPIER
21FABRICATION DU PAPIER; PRODUCTION DE LA CELLULOSE
CPRODUCTION DE LA CELLULOSE PAR ÉLIMINATION DES SUBSTANCES NON CELLULOSIQUES DES MATIÈRES CONTENANT DE LA CELLULOSE; RÉGÉNÉRATION DES LIQUEURS NOIRES; APPAREILS À CET EFFET
5Autres procédés pour obtenir de la cellulose, p.ex. cuisson des linters de coton
02Préparation à partir de vieux papiers
D21C 9/16
DTEXTILES; PAPIER
21FABRICATION DU PAPIER; PRODUCTION DE LA CELLULOSE
CPRODUCTION DE LA CELLULOSE PAR ÉLIMINATION DES SUBSTANCES NON CELLULOSIQUES DES MATIÈRES CONTENANT DE LA CELLULOSE; RÉGÉNÉRATION DES LIQUEURS NOIRES; APPAREILS À CET EFFET
9Post-traitement de la pâte de cellulose, p.ex. de la pâte de bois, ou des linters de coton
10Blanchiment
16avec des per-composés
CPC
D21C 5/02
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
5Other processes for obtaining cellulose, e.g. cooking cotton linters
02Working-up waste paper
D21C 9/16
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
10Bleaching ; ; Apparatus therefor
16with per compounds
Y02W 30/64
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
30Technologies for solid waste management
50Reuse, recycling or recovery technologies
64Paper recycling
Inventeurs SAJBEL JEROME S.
HEYWARD, JAMES R., JR.
SHARE, PAUL E.
FISCHER, STEPHEN A.
BALOS, BARBARA
CLUNGEON, NANCY S.
PATTERSON, JAMES V.
RODRIGUEZ, JOSE MARIA
Données relatives à la priorité 08112779 26.08.1993 US
08129837 30.09.1993 US
Titre
(EN) PROCESS FOR REPULPING WET STRENGTH PAPER
(FR) PROCEDE DE DESINTEGRATION DE PAPIER A RESISTANCE HUMIDE
Abrégé
(EN)
Process for repulping wet strength paper containing at least one wet strength resin in which the initial breakdown of the paper is conducted at a first pH and the substantial completion of the conversion to fibers is conducted at a second pH which is higher than the first pH.