GB826098A - Wet spinning cellulose triacetate - Google Patents

Wet spinning cellulose triacetate

Info

Publication number
GB826098A
GB826098A GB1854/58A GB185458A GB826098A GB 826098 A GB826098 A GB 826098A GB 1854/58 A GB1854/58 A GB 1854/58A GB 185458 A GB185458 A GB 185458A GB 826098 A GB826098 A GB 826098A
Authority
GB
United Kingdom
Prior art keywords
methylene chloride
coagulating liquid
weight
cellulose triacetate
temperature
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
GB1854/58A
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.)
Celanese Corp
Original Assignee
Celanese Corp
Celanese Corp of America
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 Celanese Corp, Celanese Corp of America filed Critical Celanese Corp
Publication of GB826098A publication Critical patent/GB826098A/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
    • D01D5/06—Wet 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

Landscapes

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

Abstract

A solution of cellulose triacetate in methylene chloride, or in a solvent consisting chiefly of methylene chloride, is spun into a coagulating liquid containing more than 25% of methylene chloride by weight and a 1 to 3 carbon atom aliphatic alcohol, preferably methanol, and the filaments thus formed are stretched during their passage through the coagulating liquid. The conditions employed are predetermined to yield yarn having a tenacity of at least 1.8 grams per denier coupled with an extensibility of more than 18%, as determined by described methods. Both maximum tenacity and maximum extensibility are generally obtained when the coagulating liquid contains about 50% by weight of methylene chloride. The cellulose triacetate should have an acetyl value of at least 60%, and preferably above 61%, calculated as acetic acid. Its intrinsic viscosity (as determined by a described method) should be about 1.5 to 3, and especially 2 to 3. The spinning solvent may contain a small proportion of a 1 to 3 carbon atom aliphatic alcohol, e.g. up to 15% by weight of methanol on an anhydrous basis. The concentration of cellulose triacetate in the spinning solution may be about 18 to 26%, especially 20 to 23%, by weight, and the viscosity of the solution at the spinning temperature may be about 500 to 6000 poises. The temperature at which the solution is spun is preferably between about 15 DEG and 45 DEG C. The coagulating liquid is preferably also at a temperature between 15 DEG and 45 DEG C., and especially between 15 DEG and 40 DEG C. In general the concentration of methylene chloride on an anhydrous basis to be used in the coagulating liquid is within the range defined by the formula 75.25 - (T \sB 5)%, where T is the temperature of the liquid in degrees centigrade. The coagulating liquid preferably does not contain more than 4% by weight of water. The draw-down ratio of the filaments in the coagulating liquid may be between 15 and 3.5 to 1, preferably between 10 and 5 to 1. The take-up speed may be above 100 metres per minute. In an example, a 24% solution of cellulose triacetate in a 90.5 : 9.5 wt/wt. methylene chloride-methanol mixture is spun into a coagulating bath comprising a methylene chloride-methanol 48 : 52 wt/wt. mixture at a temperature of 27 DEG C., and the filaments are drawn from the bath at a drawdown ratio of 5.8 : 1 and wound up on a roll at the rate of 90 metres per minute.
GB1854/58A 1957-10-21 1958-01-20 Wet spinning cellulose triacetate Expired GB826098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US691180A US2999004A (en) 1957-10-21 1957-10-21 Treating filamentary material

Publications (1)

Publication Number Publication Date
GB826098A true GB826098A (en) 1959-12-23

Family

ID=24775473

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1854/58A Expired GB826098A (en) 1957-10-21 1958-01-20 Wet spinning cellulose triacetate
GB16378/59A Expired GB915623A (en) 1957-10-21 1959-05-13 Artificial filamentary material

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB16378/59A Expired GB915623A (en) 1957-10-21 1959-05-13 Artificial filamentary material

Country Status (4)

Country Link
US (1) US2999004A (en)
DE (1) DE1276289B (en)
FR (1) FR1200188A (en)
GB (2) GB826098A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103757720A (en) * 2014-01-15 2014-04-30 中国纺织科学研究院 Coagulating bath for cellulose solution spinning forming and method for preparing fibers by coagulating bath
CN104213211A (en) * 2014-09-18 2014-12-17 东华大学 Method for preparing hollow fiber artificial blood vessels with polycaprolactone as material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201505A (en) * 1962-05-24 1965-08-17 Eastman Kodak Co Process for molding rod-like cigarette filter tip of cellulose ester flake

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE357988A (en) * 1928-02-08
BE371979A (en) * 1928-11-05
DE643863C (en) * 1930-03-22 1937-04-19 Boehringer & Soehne Gmbh Process for the representation of rayon and other artificial products made of acetyl cellulose
US2075027A (en) * 1931-10-21 1937-03-30 Dreyfus Henry Manufacture and treatment of artificial silk and like products
CH175036A (en) * 1933-02-15 1935-02-15 Boehringer & Soehne Gmbh Process for the production of artificial structures from cellulose esters.
GB687414A (en) * 1949-10-28 1953-02-11 British Celanese Improvements in the manufacture of one- and two-dimensional shaped articles from cellulose triesters
US2732586A (en) * 1952-04-30 1956-01-31 Spinning of
FR1062198A (en) * 1952-08-26 1954-04-20 Comptoir Textiles Artificiels Cellulose triacetate spinning process
GB778395A (en) * 1954-05-26 1957-07-03 British Celanese Improvements in the manufacture of cellulose triacetate yarns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103757720A (en) * 2014-01-15 2014-04-30 中国纺织科学研究院 Coagulating bath for cellulose solution spinning forming and method for preparing fibers by coagulating bath
CN103757720B (en) * 2014-01-15 2017-08-25 中国纺织科学研究院 Coagulating bath and the method for preparing fiber for cellulose solution spinning technique
CN104213211A (en) * 2014-09-18 2014-12-17 东华大学 Method for preparing hollow fiber artificial blood vessels with polycaprolactone as material
CN104213211B (en) * 2014-09-18 2016-06-08 东华大学 A kind of method preparing doughnut artificial blood vessel for raw material with polycaprolactone

Also Published As

Publication number Publication date
FR1200188A (en) 1959-12-18
GB915623A (en) 1963-01-16
US2999004A (en) 1961-09-05
DE1276289B (en) 1968-08-29

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