RO76052A - PROCESS AND INSTALLATION FOR CARBOHYCELLYL-CELLULOSE CELLULOSE AND GOMFLABLE - Google Patents

PROCESS AND INSTALLATION FOR CARBOHYCELLYL-CELLULOSE CELLULOSE AND GOMFLABLE

Info

Publication number
RO76052A
RO76052A RO7997660A RO9766079A RO76052A RO 76052 A RO76052 A RO 76052A RO 7997660 A RO7997660 A RO 7997660A RO 9766079 A RO9766079 A RO 9766079A RO 76052 A RO76052 A RO 76052A
Authority
RO
Romania
Prior art keywords
cellulose
excess
medium
gomflable
carbohycellyl
Prior art date
Application number
RO7997660A
Other languages
French (fr)
Romanian (ro)
Original Assignee
Hoechst Ag,De
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19782823736 external-priority patent/DE2823736A1/en
Priority claimed from DE19782823710 external-priority patent/DE2823710A1/en
Priority claimed from DE2823757A external-priority patent/DE2823757C2/en
Application filed by Hoechst Ag,De filed Critical Hoechst Ag,De
Publication of RO76052A publication Critical patent/RO76052A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B17/00—Apparatus for esterification or etherification of cellulose
    • C08B17/06—Apparatus for esterification or etherification of cellulose for making cellulose ethers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/28—Polysaccharides or their derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B11/00—Preparation of cellulose ethers
    • C08B11/02—Alkyl or cycloalkyl ethers
    • C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
    • C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
    • C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
    • C08B15/005—Crosslinking of cellulose derivatives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

A process for the manufacture of a swellable crosslinked carboxyalkylcellulose by treating cellulose or cellulose hydrate fibres or sheet with etherifying and crosslinking agents in an aqueous alkaline medium in excess, removing the excess and heating. The process may be carried out in apparatus comprising a reaction medium mixing and storage tank (6), a sieve drum washer (2) in which the reaction medium is contacted with the cellulose material, a padder (3) in which the excess medium is removed, and finally a heated sieve drum drier (5) or a sieve belt steamer (2). <IMAGE>
RO7997660A 1978-05-31 1979-05-28 PROCESS AND INSTALLATION FOR CARBOHYCELLYL-CELLULOSE CELLULOSE AND GOMFLABLE RO76052A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19782823736 DE2823736A1 (en) 1978-05-31 1978-05-31 METHOD AND DEVICE FOR THE PRODUCTION OF SWELL CAPABLE, CROSS-LINKED CARBOXY ALKYLCELLULOSE FROM NATURALLY OCCURRING CELLULOSE OR CELLULOSE HYDRATE AND THEIR USE
DE19782823710 DE2823710A1 (en) 1978-05-31 1978-05-31 Crosslinked, swellable, carboxyalkyl-cellulose mfr. - from fibres of natural cellulose or cellulose hydrate
DE2823757A DE2823757C2 (en) 1978-05-31 1978-05-31 Process for the production of swellable fibers or swellable textile fabrics

Publications (1)

Publication Number Publication Date
RO76052A true RO76052A (en) 1981-11-04

Family

ID=27187560

Family Applications (1)

Application Number Title Priority Date Filing Date
RO7997660A RO76052A (en) 1978-05-31 1979-05-28 PROCESS AND INSTALLATION FOR CARBOHYCELLYL-CELLULOSE CELLULOSE AND GOMFLABLE

Country Status (7)

Country Link
FI (1) FI791709A7 (en)
FR (1) FR2427342A1 (en)
GB (1) GB2027714B (en)
NL (1) NL7904232A (en)
PL (1) PL215946A1 (en)
RO (1) RO76052A (en)
SE (1) SE7904677L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015641B2 (en) * 1981-03-18 1985-04-20 花王株式会社 Method for producing fibrous carboxymethyl cellulose
ATA255988A (en) * 1988-10-14 1993-05-15 Chemie Linz Gmbh ABSORBENT POLYMER
CA2076732C (en) † 1992-04-17 2006-05-09 Kimberly-Clark Worldwide, Inc. Modified polysaccharides having improved absorbent properties and process for the preparation thereof
GB9301258D0 (en) * 1993-01-22 1993-03-17 Courtaulds Plc Use of absorbent fibre
JP3396961B2 (en) * 1994-08-09 2003-04-14 王子製紙株式会社 Method for producing water-absorbing cellulose material
US5725601A (en) * 1994-08-09 1998-03-10 New Oji Paper Co., Ltd. Process for producing water-absorbent cross-linked, carboxyalkylated cellulose-containing material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101263A (en) * 1935-08-01 1937-12-07 Du Pont Continuous preparation of cellulose derivatives
US2553725A (en) * 1948-09-10 1951-05-22 Buckeye Cotton Oil Company Process of preparing cellulose derivatives
FR1346293A (en) * 1962-09-17 1963-12-20 Brown Co Process for preparing carboxymethylcellulose
FR2223385A1 (en) * 1973-03-26 1974-10-25 Personal Products Co Water-insol carboxyalkylated cellulosic - absorbing and retaining liqs

Also Published As

Publication number Publication date
PL215946A1 (en) 1980-03-10
FI791709A7 (en) 1981-01-01
GB2027714B (en) 1983-03-30
NL7904232A (en) 1979-12-04
GB2027714A (en) 1980-02-27
SE7904677L (en) 1979-12-01
FR2427342A1 (en) 1979-12-28

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