GB444517A - Improvements in and relating to the spinning of artificial silk - Google Patents

Improvements in and relating to the spinning of artificial silk

Info

Publication number
GB444517A
GB444517A GB13924/35A GB1392435A GB444517A GB 444517 A GB444517 A GB 444517A GB 13924/35 A GB13924/35 A GB 13924/35A GB 1392435 A GB1392435 A GB 1392435A GB 444517 A GB444517 A GB 444517A
Authority
GB
United Kingdom
Prior art keywords
funnel
acids
acid
spun
whilst
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
GB13924/35A
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.)
BRITISH BEMBERG Ltd
Original Assignee
BRITISH BEMBERG 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 BRITISH BEMBERG Ltd filed Critical BRITISH BEMBERG Ltd
Publication of GB444517A publication Critical patent/GB444517A/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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
    • D01F2/04—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts from cuprammonium solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A cuprammonium solution is spun in a funnel through nozzles having a diameter of less than 0.6 mm. into water to which has been added such small quantities of organic or inorganic acids of greater acidity than carbonic acid that the filaments leave the funnel neutral or alkaline whilst the precipitating liquid leaves the funnel still having an acid reaction. Suitable acids are formic, acetic, oxalic, tartaric, citric, and sulphuric acids and organic sulphonic acids, and these may be employed in concentrations of, for example, 4, 8, or 10 grams per litre. In an example, a normal cuprammonium solution such as is described in Specification 423,642 is spun through a nozzle of diameter 0.3 mm. into water containing 5 grams per litre of sulphuric acid at a temperature of 25 to 35 DEG C. The water leaving the funnel is still acid whilst the filament reacts neutral or weakly alkaline.
GB13924/35A 1933-04-15 1935-05-11 Improvements in and relating to the spinning of artificial silk Expired GB444517A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE423642X 1933-04-15
DE444517X 1935-01-22

Publications (1)

Publication Number Publication Date
GB444517A true GB444517A (en) 1936-03-23

Family

ID=31888986

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11458/34A Expired GB423642A (en) 1933-04-15 1934-04-16 An improved process for making cuprammonium artificial silk
GB13924/35A Expired GB444517A (en) 1933-04-15 1935-05-11 Improvements in and relating to the spinning of artificial silk

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB11458/34A Expired GB423642A (en) 1933-04-15 1934-04-16 An improved process for making cuprammonium artificial silk

Country Status (3)

Country Link
US (1) US2095220A (en)
DE (2) DE640834C (en)
GB (2) GB423642A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11441264B1 (en) * 2022-02-13 2022-09-13 King Abdulaziz University Method of obtaining rayon fibers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11441264B1 (en) * 2022-02-13 2022-09-13 King Abdulaziz University Method of obtaining rayon fibers

Also Published As

Publication number Publication date
DE675806C (en) 1939-05-17
DE640834C (en) 1937-01-13
GB423642A (en) 1935-02-05
US2095220A (en) 1937-10-05

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