GB1147594A - Producing polyoxymethylene filaments - Google Patents

Producing polyoxymethylene filaments

Info

Publication number
GB1147594A
GB1147594A GB1463666A GB1463666A GB1147594A GB 1147594 A GB1147594 A GB 1147594A GB 1463666 A GB1463666 A GB 1463666A GB 1463666 A GB1463666 A GB 1463666A GB 1147594 A GB1147594 A GB 1147594A
Authority
GB
United Kingdom
Prior art keywords
polyoxymethylene
filaments
trioxane
copolymer
solution
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
GB1463666A
Inventor
Bela Von Falkai
Wolfgang Rellensmann
Alfred Reichle
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB1147594A publication Critical patent/GB1147594A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • C08G2/28—Post-polymerisation treatments
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G4/00—Condensation polymers of aldehydes or ketones with polyalcohols; Addition polymers of heterocyclic oxygen compounds containing in the ring at least once the grouping —O—C—O—
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/66—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

1,147,594. Producing polyoxymethylene filaments. FARBENFABRIKEN BAYER A.G. 1 April, 1966 [1 April, 1965], No. 14636/66. Heading B5B. [Also in Division C3] Polyoxymethylene filaments are produced by dissolving a polyoxymethylene having a molecular weight of 20,000 to 125,000 or a copolymer thereof containing not less than 90% by weight of polyoxymethylene, the polyoxymethylene or the copolymer thereof having an inherent viscosity of 0À8 to 2À5, in a polar organic solvent having a boiling point above 160‹ C. at a temperature up to 160‹ C. and extruding the solution through a multi-orifice spinneret at a temperature within the range 80 to 160‹ C. into a coagulating medium and stretching the filaments at an elevated temperature advantageously within the range 100 to 140‹ C. The solution may be extruded into a heated spinning cabinet through which a preheated inert gas is passed on into a precipitating bath. The inherent viscosity is calculated according to the formula the viscosity of a 0À5% solution of the polymer in p-chlorophenol being measured at 60‹ C. The solvent may be N,N-dimethyl-acetamide, N- methyl pyrrolidone (both used in the examples), N,N-dimethylformamide, butyrolactone, w-cresol, p-chlorophenol, dimethylsulphoxide, tetramethylene sulphone, or hexamethylphosphoric acid amide. The polyoxymethylene has a molecular weight of preferably 30,000 to 85,000 and its inherent viscosity is preferably 1À0 to 2À0. The polyoxymethylene may be a formaldehyde polymer having end groups stabilized by esterification, or a copolymer of trioxane, e.g. trioxane-dioxolane, trioxane-oxthiolane, trioxane-1,3,-dioxane or a trioxane-epichlorhydrin copolymer with a comonomer content of 0À1 to 10%, preferably 1 to 5%. In the production of the filaments by wet spinning the precipitation medium may advantageously be an alcohol of relatively high boiling point such as butanol, octanol, glycerine, ethylene glycol or hexanetricol. The filaments may be stretched in the precipitation bath. The spun filaments still contain about 0À5 to 5% of the spinning solvent and may therefore be stretched at stretch ratios up to 15: 1 without breakage.
GB1463666A 1965-04-01 1966-04-01 Producing polyoxymethylene filaments Expired GB1147594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0045698 1965-04-01

Publications (1)

Publication Number Publication Date
GB1147594A true GB1147594A (en) 1969-04-02

Family

ID=7100618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1463666A Expired GB1147594A (en) 1965-04-01 1966-04-01 Producing polyoxymethylene filaments

Country Status (6)

Country Link
JP (1) JPS4842805B1 (en)
BE (1) BE678756A (en)
CH (1) CH465758A (en)
DE (1) DE1660287A1 (en)
GB (1) GB1147594A (en)
NL (1) NL6604393A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7410696B2 (en) 2005-01-12 2008-08-12 Ticona Gmbh Polyoxymethylene fibers, production thereof and use thereof
CN115652463A (en) * 2022-10-18 2023-01-31 清华大学 Application of polyformaldehyde fiber in indoor and outdoor environment human body radiation refrigeration

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7410696B2 (en) 2005-01-12 2008-08-12 Ticona Gmbh Polyoxymethylene fibers, production thereof and use thereof
CN115652463A (en) * 2022-10-18 2023-01-31 清华大学 Application of polyformaldehyde fiber in indoor and outdoor environment human body radiation refrigeration
CN115652463B (en) * 2022-10-18 2024-04-30 清华大学 Application of polyoxymethylene fiber in human body radiation refrigeration in indoor and outdoor environments

Also Published As

Publication number Publication date
JPS4842805B1 (en) 1973-12-14
NL6604393A (en) 1966-10-03
DE1660287A1 (en) 1970-12-17
CH465758A (en) 1968-11-30
BE678756A (en) 1966-09-01

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