GB889834A - Improvements in the dry spinning of cellulose ester filaments and the like - Google Patents

Improvements in the dry spinning of cellulose ester filaments and the like

Info

Publication number
GB889834A
GB889834A GB3872258A GB3872258A GB889834A GB 889834 A GB889834 A GB 889834A GB 3872258 A GB3872258 A GB 3872258A GB 3872258 A GB3872258 A GB 3872258A GB 889834 A GB889834 A GB 889834A
Authority
GB
United Kingdom
Prior art keywords
acid
solvent
mixture
cellulose
spinning
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
GB3872258A
Inventor
Norman Bernard Campbell
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.)
Canadian Celanese Ltd
Original Assignee
Canadian 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 Canadian Celanese Ltd filed Critical Canadian Celanese Ltd
Priority to GB3872258A priority Critical patent/GB889834A/en
Publication of GB889834A publication Critical patent/GB889834A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/04—Dry spinning methods
    • 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

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

Abstract

Filaments &c. are produced by dry spinning a solution of a cellulose ester into an atmosphere maintained above the boiling point of the solvent and consisting of the superheated solvent vapour alone or mixed with up to an equal volume of air or other inert gas. The solvent may be acetone but more particularly the esterifying mixture in which the cellulose acetate is produced. In such a mixture the solvent may consist wholly of an aliphatic acid (particularly an aliphatic acid containing 2 to 4 carbon atoms) or may also contain a small proportion of water after the ester has been ripened, or may consist of a mixture of the acid with the acid anhydride used to esterify the cellulose. The invention is most advantageously applied to the production of filaments &c. from triesters of cellulose in solution in the mixture of acid and anhydride in which they are produced. The atmosphere into which the ester solution is spun may then consist of the super-heated aliphatic acid and/or aliphatic acid-anhydride. In an example, a solution of cellulose acetate in an esterifying mixture boiling at 123 DEG C. and consisting of acetic acid and acetic anhydride in which the sulphuric acid catalyst has been neutralized with magnesium acetate is extruded at 100 DEG C. through a conventional spinning jet into a closed spinning cabinet heated electrically to 180 DEG C. The cabinet is sealed except for a small aperture for the withdrawal of the yarn and a vapour exit line to a condenser. The spinning is conducted without admission of air using normal take-up equipment and a feed roller speed of 135 metres per minute. The process of the invention has the advantage over conventional dry spinning into heated air that the solvent can be recovered by simple condensation. Specification 791,367 is referred to.
GB3872258A 1958-12-01 1958-12-01 Improvements in the dry spinning of cellulose ester filaments and the like Expired GB889834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3872258A GB889834A (en) 1958-12-01 1958-12-01 Improvements in the dry spinning of cellulose ester filaments and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3872258A GB889834A (en) 1958-12-01 1958-12-01 Improvements in the dry spinning of cellulose ester filaments and the like

Publications (1)

Publication Number Publication Date
GB889834A true GB889834A (en) 1962-02-21

Family

ID=10405285

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3872258A Expired GB889834A (en) 1958-12-01 1958-12-01 Improvements in the dry spinning of cellulose ester filaments and the like

Country Status (1)

Country Link
GB (1) GB889834A (en)

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