GB1086616A - Processes of producing stable filaments of linear polyurethanes - Google Patents

Processes of producing stable filaments of linear polyurethanes

Info

Publication number
GB1086616A
GB1086616A GB287665A GB287665A GB1086616A GB 1086616 A GB1086616 A GB 1086616A GB 287665 A GB287665 A GB 287665A GB 287665 A GB287665 A GB 287665A GB 1086616 A GB1086616 A GB 1086616A
Authority
GB
United Kingdom
Prior art keywords
filaments
dryer
polyurethane
belts
spun
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
GB287665A
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.)
Ameliotex Inc
Original Assignee
Ameliotex 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 Ameliotex Inc filed Critical Ameliotex Inc
Publication of GB1086616A publication Critical patent/GB1086616A/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
    • 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
    • D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes

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

1,086,616. Polyurethane filaments. AMELIOTEX Inc. Jan. 22, 1965 [Feb. 19, 1964], No. 2876/65. Heading B5B. Wet-spun polyurethane filaments containing longitudinal stresses caused by drawing are heated, while supporting by a belt or on rollers in a dryer, to a temperature above the second order transition temperature and below the melting point of the polyurethane for sufficient time to obtain substantially complete relaxation of said stresses. The draw ratio exerted on the filaments before entering the dryer is suitably 1À1 to 3, and that exerted on the filaments in the dryer preferably does not exceed 1À2. In an example, a solution of polyurethane on D.M.F. is spun into a 20% aqueous solution of D.M.F. at room temperature, and the filaments are passed through a countercurrent extraction system comprising stainless steel trays filled with water, the draw ratio between entry and exit of the system being 1À5. The filaments are then transferred to a dryer (17) (not shown) and heated to 130‹, 160‹ and 190‹ C. successively while supported on belts (19), (20) and (21) respectively. The belts may be made of glass fabric impregnated with polytetrafluorethylene.
GB287665A 1964-02-19 1965-01-22 Processes of producing stable filaments of linear polyurethanes Expired GB1086616A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34597664A 1964-02-19 1964-02-19

Publications (1)

Publication Number Publication Date
GB1086616A true GB1086616A (en) 1967-10-11

Family

ID=23357390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB287665A Expired GB1086616A (en) 1964-02-19 1965-01-22 Processes of producing stable filaments of linear polyurethanes

Country Status (5)

Country Link
BE (1) BE659886A (en)
DE (1) DE1660141A1 (en)
ES (1) ES309401A1 (en)
GB (1) GB1086616A (en)
NL (1) NL6501775A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052953A1 (en) 2009-11-12 2011-05-19 Fleissner Gmbh Device for washing spun filaments, comprises washtub, which is formed at end area of bleeder that is lying in promotion direction of cable with fluid receiver

Also Published As

Publication number Publication date
DE1660141A1 (en) 1970-12-10
BE659886A (en) 1965-08-18
NL6501775A (en) 1965-05-25
ES309401A1 (en) 1965-12-16

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