GB700555A - Process for producing regenerated cellulose filaments or fibres from viscose - Google Patents

Process for producing regenerated cellulose filaments or fibres from viscose

Info

Publication number
GB700555A
GB700555A GB27675/50A GB2767550A GB700555A GB 700555 A GB700555 A GB 700555A GB 27675/50 A GB27675/50 A GB 27675/50A GB 2767550 A GB2767550 A GB 2767550A GB 700555 A GB700555 A GB 700555A
Authority
GB
United Kingdom
Prior art keywords
filaments
bath
regenerating
viscose
coagulating
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
GB27675/50A
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
American Viscose Corp
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 American Viscose Corp filed Critical American Viscose Corp
Publication of GB700555A publication Critical patent/GB700555A/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
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath
    • 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
    • D01F13/00—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
    • D01F13/02—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like of cellulose, cellulose derivatives or proteins
    • 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
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Abstract

Regenerated cellulose filaments and fibres are obtained by a two-stage spinning process which comprises extruding viscose into an aqueous coagulating bath having a pH of 1.5 to 10 and containing sodium sulphate and inorganic phosphate radicals, at least some of which are in the form of a sodium salt, withdrawing the xanthate filaments thus formed, passing them through an aqueous cellulose-regenerating bath containing an equilibrium mixture of sodium sulphate and phosphoric acid and also sulphuric acid to convert at least part of the phosphate salts carried over by the filaments to phosphoric acid, stretching the filaments between the coagulation and complete regeneration operations, continuously passing at least a portion of excess regenerating bath which builds up during spinning to the coagulating bath, withdrawing a portion of the coagulating bath and removing therefrom, by evaporation and crystallization, water and sodium sulphate, and maintaining the composition of the coagulating bath substantially constant by the addition of predetermined amounts of sulphuric acid and phosphoric acid from a source other than the regenerating bath. In effect, it is the sulphuric acid that is consumed for the neutralization of virtually all the sodium hydroxide in the viscose, the phosphate radicals serving to dehydrate the viscose stream and as a vehicle to carry hydrogen ions to the stream for neutralizing the sodium hydroxide. There is substantially no loss of phosphate radicals. The filaments may be stretched between the coagulating and regenerating baths and relaxed in the regenerating bath. Alternatively they may be stretched in the regenerating bath. Crimped filaments may be obtained by employing a high jet velocity-draw-off ratio.
GB27675/50A 1949-11-19 1950-11-13 Process for producing regenerated cellulose filaments or fibres from viscose Expired GB700555A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US700555XA 1949-11-19 1949-11-19

Publications (1)

Publication Number Publication Date
GB700555A true GB700555A (en) 1953-12-02

Family

ID=22092837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27675/50A Expired GB700555A (en) 1949-11-19 1950-11-13 Process for producing regenerated cellulose filaments or fibres from viscose

Country Status (5)

Country Link
BE (1) BE499423A (en)
DE (1) DE876886C (en)
FR (1) FR1031640A (en)
GB (1) GB700555A (en)
NL (1) NL76155C (en)

Also Published As

Publication number Publication date
FR1031640A (en) 1953-06-25
BE499423A (en) 1900-01-01
NL76155C (en) 1900-01-01
DE876886C (en) 1953-05-18

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