GB572798A - Improvements in or relating to the production of artificial films or filaments having a basis of alginic material - Google Patents

Improvements in or relating to the production of artificial films or filaments having a basis of alginic material

Info

Publication number
GB572798A
GB572798A GB43242A GB43242A GB572798A GB 572798 A GB572798 A GB 572798A GB 43242 A GB43242 A GB 43242A GB 43242 A GB43242 A GB 43242A GB 572798 A GB572798 A GB 572798A
Authority
GB
United Kingdom
Prior art keywords
yarn
alginic acid
solution
heated
treatment
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
GB43242A
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.)
CEFOIL Ltd
Original Assignee
CEFOIL 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 CEFOIL Ltd filed Critical CEFOIL Ltd
Priority to GB43242A priority Critical patent/GB572798A/en
Publication of GB572798A publication Critical patent/GB572798A/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
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/04—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of alginates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Alkali-resistant filaments, films, or the like, having a basis of alginic material are obtained by subjecting the materials, during or subsequently to the process of filament or film formation, to the action of an aldehyde at elevated temperature and in the presence of an acidic substance. The aldehyde treatment appears to result in the cross-linking of alginic acid molecules by methylene groups. Preferably, the treatment with aldehyde is effected after preliminarily coagulating with calcium chloride or strong mineral acid solutions. In an example, sodium alginate solution is extruded into a coagulating bath containing dilute sulphuric acid. The alginic acid yarn obtained is dried and then immersed in a solution containing ammonium chloride, formaldehyde, and water. It is removed, squeezed and heated in a steam oven. The treated yarn is resistant to the solvent action of soap and soda solutions. In another example, a freshly spun, wet, yarn of alginic acid is passed through a washing bath and then through an acidified solution of formaldehyde and ammonium chloride. It is then led through a hot-air drier. Alginic acid yarn is immersed in a solution obtained by dissolving paraformaldehyde in dilute hydrochloric acid solution. It is squeezed and heated. Alginic acid yarn is immersed in a solution of tartaric acid, paraformaldehyde, ammonium chloride and water, and then squeezed and heated. Hanks of alginic acid yarn are exposed to the vapour of heated paraformaldehyde while suspended in a steam-heated chamber. In this case, the alginic acid itself serves as catalyst. The alkali-resistant alginic acid yarn may be converted into a metal alginate yarn by treatment with a solution of a metal salt, e.g. calcium acetate. The aldehyde treatment may be applied to metal alginate yarn, e.g. beryllium or chromium alginate. The treatment may be applied to yarns as they are produced or when they are in the form of hanks, or it may be applied after the yarn has been woven into fabric. Specifications 541,847, 545,872 and 548,248 are referred to.
GB43242A 1942-01-12 1942-01-12 Improvements in or relating to the production of artificial films or filaments having a basis of alginic material Expired GB572798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB43242A GB572798A (en) 1942-01-12 1942-01-12 Improvements in or relating to the production of artificial films or filaments having a basis of alginic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43242A GB572798A (en) 1942-01-12 1942-01-12 Improvements in or relating to the production of artificial films or filaments having a basis of alginic material

Publications (1)

Publication Number Publication Date
GB572798A true GB572798A (en) 1945-10-24

Family

ID=9704242

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43242A Expired GB572798A (en) 1942-01-12 1942-01-12 Improvements in or relating to the production of artificial films or filaments having a basis of alginic material

Country Status (1)

Country Link
GB (1) GB572798A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813034A (en) * 1951-12-07 1957-11-12 Weingand Richard Method of producing synthetic sausage skins and products produced thereby

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813034A (en) * 1951-12-07 1957-11-12 Weingand Richard Method of producing synthetic sausage skins and products produced thereby

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