GB1130484A - Improvements in preparing solutions of cellulose and its derivatives and a process for producing them - Google Patents

Improvements in preparing solutions of cellulose and its derivatives and a process for producing them

Info

Publication number
GB1130484A
GB1130484A GB683366A GB683366A GB1130484A GB 1130484 A GB1130484 A GB 1130484A GB 683366 A GB683366 A GB 683366A GB 683366 A GB683366 A GB 683366A GB 1130484 A GB1130484 A GB 1130484A
Authority
GB
United Kingdom
Prior art keywords
cellulose
solution
weight
water
nitrogen dioxide
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB683366A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rayonier Inc
Original Assignee
Rayonier Inc
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
Application filed by Rayonier Inc filed Critical Rayonier Inc
Publication of GB1130484A publication Critical patent/GB1130484A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08B11/20—Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/003—Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Artificial Filaments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1,130,484. Cellulose solutions. RAYONIER Inc. 16 Feb., 1966 [27 July, 1965], No. 6833/66. Heading C3A. A fibreless solution comprises cellulose, dimethyl sulphoxide, nitrogen dioxide and 0À2 to 1À0% by weight of water. The composition may comprise cellulose, 3 to 30% NO 2 , 0À2 to 1À0% water and the balance dimethyl sulphoxide, the ratio of the proportion of nitrogen dioxide to that of cellulose by weight in the mixture being within the range 1À7 to 2À3. The term " cellulose " is used in the specification to include cellulose itself, cellulose esters and cellulose ethers. The composition may comprise cellulose, 10 to 25% by weight of nitrogen dioxide, 0À2 to 1À0% by weight of water, and the balance dimethyl sulphoxide, the proportion of nitrogen dioxide to that of cellulose by weight being within the range 1À7 to 2À3. The solution may be formed by dissolving comminuted cellulose in a solution of 3 to 30% by weight of nitrogen dioxide in dimethyl sulphoxide, the cellulose and/or the solution of nitrogen dioxide in dimethyl sulphoxide containing such a proportion of water that the final solution contains 0À2 to 1À0% by weight of water. The solution of cellulose may be prepared at ambient temperature or at a temperature of 10‹ to 30‹ C. Two or more celluloses differing in intrinsic viscosity may be mixed together in such proportions as to provide a blended cellulose having an intrinsic viscosity of 2À0 to 2À5 and this blended cellulose used for the preparation of the solution. The cellulose may be precipitated from the solution by adding the solution to acetone, or to an aliphatic alcohol, ether or ester which precipitating liquid is miscible with the cellulose solution. The solution may be cast to form a film and the cellulose regenerated by washing the film with or the solution may be wet spun into water and the filaments thereby formed washed with water to form regenerated cellulose filaments.
GB683366A 1965-07-27 1966-02-16 Improvements in preparing solutions of cellulose and its derivatives and a process for producing them Expired GB1130484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47522965A 1965-07-27 1965-07-27

Publications (1)

Publication Number Publication Date
GB1130484A true GB1130484A (en) 1968-10-16

Family

ID=23886730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB683366A Expired GB1130484A (en) 1965-07-27 1966-02-16 Improvements in preparing solutions of cellulose and its derivatives and a process for producing them

Country Status (3)

Country Link
DE (1) DE1620848A1 (en)
GB (1) GB1130484A (en)
SE (1) SE317366B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302252A (en) * 1979-07-25 1981-11-24 International Telephone And Telegraph Corp. Solvent system for cellulose

Also Published As

Publication number Publication date
SE317366B (en) 1969-11-17
DE1620848A1 (en) 1970-12-10

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