GB478937A - Improvements in or relating to the manufacture of artificial filaments, yarns, filmsand similar materials - Google Patents

Improvements in or relating to the manufacture of artificial filaments, yarns, filmsand similar materials

Info

Publication number
GB478937A
GB478937A GB15528/37A GB1552837A GB478937A GB 478937 A GB478937 A GB 478937A GB 15528/37 A GB15528/37 A GB 15528/37A GB 1552837 A GB1552837 A GB 1552837A GB 478937 A GB478937 A GB 478937A
Authority
GB
United Kingdom
Prior art keywords
acetone
cellulose acetate
per cent
solvent
contain
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
GB15528/37A
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.)
Acordis UK Ltd
Original Assignee
British Celanese Ltd
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 British Celanese Ltd filed Critical British Celanese Ltd
Publication of GB478937A publication Critical patent/GB478937A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
    • D01F2/30—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate by the dry spinning process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)

Abstract

Artificial filaments, yarns, films, and like materials are obtained by extruding a solution, containing not more than 5 per cent of water calculated on the weight of the solvent medium, of an acetone-soluble cellulose acetate having an acetyl content above 56 per cent, calculated as acetic acid, the major constituent of the solvent medium being acetone. The cellulose acetate may be produced by acetylating cellulose with acetic anhydride, acetic acid, and sulphuric acid, and ripening until the desired acetyl value and acetone-solubility are reached, or by subjecting a cellulose acetate of lower acetyl value to further acetylation. The small amount of water normally present in cellulose acetate of 56--59 per cent acetyl content may be reduced by drying before the dissolving step. The solvent used may be free from water or may contain a small proportion, e.g. 2,5 per cent. The acetone used as solvent may contain additions of other solvents, and it may contain pigments, or dyes. The solutions may be extruded into an evaporative atmosphere. The Specification as open to inspection under Sect. 91 describes also the employment of solutions of cellulose esters other than cellulose acetate and of liquids other than acetone as major constituent of the solvent medium. This subject-matter does not appear in the Specification as accepted.
GB15528/37A 1936-06-06 1937-06-04 Improvements in or relating to the manufacture of artificial filaments, yarns, filmsand similar materials Expired GB478937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US478937XA 1936-06-06 1936-06-06

Publications (1)

Publication Number Publication Date
GB478937A true GB478937A (en) 1938-01-27

Family

ID=21951597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15528/37A Expired GB478937A (en) 1936-06-06 1937-06-04 Improvements in or relating to the manufacture of artificial filaments, yarns, filmsand similar materials

Country Status (1)

Country Link
GB (1) GB478937A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916777A (en) * 1954-09-16 1959-12-15 Eastman Kodak Co Improved method of extruding a tobacco smoke filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916777A (en) * 1954-09-16 1959-12-15 Eastman Kodak Co Improved method of extruding a tobacco smoke filter

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