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1. WO2000039389 - CARBOXYLATED CELLULOSIC FIBERS

Publication Number WO/2000/039389
Publication Date 06.07.2000
International Application No. PCT/US1999/029884
International Filing Date 16.12.1999
Chapter 2 Demand Filed 11.07.2000
IPC
D06M 13/192 2006.01
DTEXTILES; PAPER
06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0664
13Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
10with compounds containing oxygen
184Carboxylic acids; Anhydrides, halides or salts thereof
192Polycarboxylic acids; Anhydrides, halides or salts thereof
D06M 15/263 2006.01
DTEXTILES; PAPER
06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0664
15Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment
19with synthetic macromolecular compounds
21Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
263of unsaturated carboxylic acids; Salts or esters thereof
D21C 9/00 2006.01
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
D21H 11/20 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
11Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
16modified by a particular after-treatment
20Chemically or biochemically modified fibres
CPC
D06M 13/192
DTEXTILES; PAPER
06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
13Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds
10with compounds containing oxygen
184Carboxylic acids; Anhydrides, halides or salts thereof
192Polycarboxylic acids; Anhydrides, halides or salts thereof
D06M 15/263
DTEXTILES; PAPER
06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
15Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
19with synthetic macromolecular compounds
21Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
263of unsaturated carboxylic acids; Salts or esters thereof
D21C 9/005
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
001Modification of pulp properties
002by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
005organic compounds
D21H 11/20
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
11Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
16modified by a particular after-treatment
20Chemically or biochemically modified fibres
Applicants
  • WEYERHAEUSER COMPANY [US/US]; P.O. Box 9777 Federal Way, WA 98063-9777, US
Inventors
  • JEWELL, Richard, A.; US
Agents
  • CRAWFORD, John, M. ; Weyerhaeuser Company Patent Dept. - CH2J29 P.O. Box 9777 Federal Way, WA 98063-9777, US
Priority Data
09/222,37229.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CARBOXYLATED CELLULOSIC FIBERS
(FR) FIBRES DE CELLULOSE CARBOXYLEES
Abstract
(EN)
Carboxylated cellulosic fibers, comprising cellulosic fibers covalently coupled to a carboxylating agent through an ester bond, wherein the carboxylating agent provides a carboxyl group to the fibers, and wherein the carboxylating agent is a polycarboxylic acid having one carboxyl group separated from a second carboxyl group by either two or three atoms, wherein the carboxylated fibers have a water retention value greater than or equal to the water retention value of the fibers from which the carboxylated fibers are formed. Methods for producing the fibers and for producing fibrous products that incorporate the fibers are also disclosed.
(FR)
L'invention concerne des fibres de cellulose carboxylées contenant des fibres de cellulose couplées de manière covalente à un agent de carboxylation par l'intermédiaire d'une liaison ester, agent qui fournit aux fibres un groupe carboxyle. Cet agent est un acide polycarboxylique ayant un groupe carboxyle séparé d'un second groupe carboxyle par deux ou trois atomes. Les fibres carboxylées ont une valeur de rétention d'eau supérieure ou égale à celle des fibres à partir desquelles elles sont fabriquées. L'invention concerne aussi la production de telles fibres et de produits fibreux qui incorporent ces fibres.
Also published as
Latest bibliographic data on file with the International Bureau