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1. WO1992015754 - A METHOD FOR FIBER LOADING A CHEMICAL COMPOUND

Publication Number WO/1992/015754
Publication Date 17.09.1992
International Application No. PCT/US1992/001737
International Filing Date 05.03.1992
Chapter 2 Demand Filed 05.10.1992
IPC
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 17/00 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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
D21H 17/67 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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
63Inorganic compounds
67Water-insoluble compounds, e.g. fillers or pigments
D21H 17/70 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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
63Inorganic compounds
70forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
D21H 23/16 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
23Processes or apparatus for adding material to the pulp or to the paper
02characterised by the manner in which substances are added
04Addition to the pulp; After-treatment of added substances in the pulp
06Controlling the addition
14by selecting point of addition or time of contact between components
16Addition before or during pulp beating or refining
CPC
D21C 9/004
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
004inorganic compounds
D21H 17/00
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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
D21H 17/675
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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
63Inorganic compounds
67Water-insoluble compounds, e.g. fillers, pigments
675Oxides, hydroxides or carbonates
D21H 17/70
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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
63Inorganic compounds
70forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
D21H 23/16
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
23Processes or apparatus for adding material to the pulp or to the paper
02characterised by the manner in which substances are added
04Addition to the pulp; After-treatment of added substances in the pulp
06Controlling the addition
14by selecting point of addition or time of contact between components
16Addition before or during pulp beating or refining
Applicants
  • THE UNITED STATES OF AMERICA as represented by THE SECRETARY OF AGRICULTURE [US]/[US]
Inventors
  • KLUNGNESS, John, Harold
  • CAULFIELD, Daniel, Francis
  • SACHS, Irving, B.
  • SYKES, Marguerite, S.
  • TAN, Freya
  • SHILTS, Richard, Walter
Agents
  • WATT, Phillip, H.
Priority Data
665,46406.03.1991US
805,02511.12.1991US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD FOR FIBER LOADING A CHEMICAL COMPOUND
(FR) PROCEDE DESTINE A CHARGER DES FIBRES AVEC UN COMPOSE CHIMIQUE
Abstract
(EN)
The present invention relates to a method for loading a chemical compound within the fibers of a fibrous material and to the fibrous materials produced by the method. In the method, a fibrous cellulose material is provided which consists of a plurality of elongated fibers having a fiber wall surrounding a hollow interior. The fibrous material has a moisture content such that the level of water ranges from 40-95 % of the weight of the fibrous material and the water is positioned substantially within the hollow interior of the fibers and within the fiber walls of the fibers. A chemical is added to the fibrous material in a manner such that the chemical is disposed in the water present in the fibrous material. The fibrous material is then contacted with a gas which is reactive with the chemical to form a water insoluble chemical compound. The method provides a fibrous material having a chemical compound loaded within the hollow interiors and within the fiber walls of the plurality of fibers.
(FR)
Procédé destiné à charger un composé chimique au sein des fibres d'un matériau fibreux et matériaux fibreux produits selon ledit procédé. Selon ce procédé, un matériau de cellulose fibreux est constitué d'une pluralité de fibres allongées dotées d'une paroi entourant un intérieur creux. Le matériau fibreux a une teneur en humidité telle que le niveau d'eau va de 40 % à 95 % du poids du matériau fibreux et telle que l'eau se trouve pratiquement dans l'intérieur creux des fibres et au sein des parois des fibres. Un agent chimique est ajouté au matériau fibreux de telle manière que ledit agent chimique soit déposé dans l'eau présente dans le matériau fibreux. Le matériau fibreux est ensuite mis au contact d'un gaz qui réagit avec l'agent chimique pour former un composé chimique non soluble dans l'eau. Ledit procédé fournit un matériau fibreux dont les intérieurs creux et les parois de la pluralité de fibres sont chargés d'un composé chimique.
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