GB701806A - Improvements in and relating to the production of synthetic threads, fibres, filaments and like filamentary materials - Google Patents

Improvements in and relating to the production of synthetic threads, fibres, filaments and like filamentary materials

Info

Publication number
GB701806A
GB701806A GB779151A GB779151A GB701806A GB 701806 A GB701806 A GB 701806A GB 779151 A GB779151 A GB 779151A GB 779151 A GB779151 A GB 779151A GB 701806 A GB701806 A GB 701806A
Authority
GB
United Kingdom
Prior art keywords
per cent
swelling agent
annealed
stretched
water
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
GB779151A
Inventor
Lech Rakowski
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Priority to GB779151A priority Critical patent/GB701806A/en
Publication of GB701806A publication Critical patent/GB701806A/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
    • D01F6/72—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyureas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

Preformed polythiourea threads are stretched at least 450 per cent. in the presence of a swelling agent and at an elevated temperature in such a manner that the extensibility of the stretched thread is at least 15 to 25 per cent. and then annealed without allowing them to retract. The threads are considered to be annealed when they do not shrink more than 6 per cent. when heated in air for 20 minutes at 70 DEG C. in freely relaxed condition. Water is the preferred swelling agent. The stretching may be preferably effected in stages using known stretching devices. The annealing is carried out in a heated atmosphere after removal of the swelling agent, for example by drying when the swelling agent is water. In an example a hexamethylene polythiourea thread is stretched 513 per cent. in water at 65 DEG C. in three stages, and then dried by passage over a heated roller. It is then annealed by heating at constant length while wound on a bobbin for one hour in air at 70 DEG C. and then for a further hour at 90 DEG C. Specifications 524,795, 534,699 and 660,905, are referred to.
GB779151A 1951-04-04 1951-04-04 Improvements in and relating to the production of synthetic threads, fibres, filaments and like filamentary materials Expired GB701806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB779151A GB701806A (en) 1951-04-04 1951-04-04 Improvements in and relating to the production of synthetic threads, fibres, filaments and like filamentary materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB779151A GB701806A (en) 1951-04-04 1951-04-04 Improvements in and relating to the production of synthetic threads, fibres, filaments and like filamentary materials

Publications (1)

Publication Number Publication Date
GB701806A true GB701806A (en) 1954-01-06

Family

ID=9839805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB779151A Expired GB701806A (en) 1951-04-04 1951-04-04 Improvements in and relating to the production of synthetic threads, fibres, filaments and like filamentary materials

Country Status (1)

Country Link
GB (1) GB701806A (en)

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