GB310864A - Improved process for the manufacture of artificial silk, from cuprammonium solutions of cellulose - Google Patents

Improved process for the manufacture of artificial silk, from cuprammonium solutions of cellulose

Info

Publication number
GB310864A
GB310864A GB309928A GB309928A GB310864A GB 310864 A GB310864 A GB 310864A GB 309928 A GB309928 A GB 309928A GB 309928 A GB309928 A GB 309928A GB 310864 A GB310864 A GB 310864A
Authority
GB
United Kingdom
Prior art keywords
water
copper
ammonia
heating
necessary
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
GB309928A
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.)
OSCAR FREIHERR VON KOHORN
Original Assignee
OSCAR FREIHERR VON KOHORN
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 OSCAR FREIHERR VON KOHORN filed Critical OSCAR FREIHERR VON KOHORN
Priority to GB309928A priority Critical patent/GB310864A/en
Priority to FR648061D priority patent/FR648061A/en
Publication of GB310864A publication Critical patent/GB310864A/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)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

310,864. Kohorn, O. F. von, (trading as Kohorn & Co., O.), and Perl, A. Jan. 31, 1928. Ammoniacal-copper cellulose solutions, processes for making filaments from.-The water used as precipitant in the stretch-spinning process for the manufacture of artificial silk from ammoniacal-copper cellulose solutions is freed from ammonia and copper in known manner by heating and, after standing until the copper sludge has settled down, is filtered and used again after cooling without any further treatment. A small amount of caustic alkali may be added prior to the heating in order to liberate the small amount of ammonia which may be present in the form of salts. The ammonia driven off is driven into absorption towers and bound in known manner, for instance as sulphate. The water usually contains small quantities of other salts, e.g. sodium sulphate or carbonate, which cause disturbances in the spinning if they are present in concentration exceeding a certain limit, so that it is necessary to replace a small part of the used water by fresh water, which lias the added advantage of partly effecting the necessary cooling of the heated water but since only a part of the water which has been freed from copper and ammonia by heating, is replaced by fresh water, a pretreatment of the latter for the purpose of expelling dissolved gases is not necessary. Reference has been directed by the Comptroller to Specification 300,572.
GB309928A 1928-01-31 1928-01-31 Improved process for the manufacture of artificial silk, from cuprammonium solutions of cellulose Expired GB310864A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB309928A GB310864A (en) 1928-01-31 1928-01-31 Improved process for the manufacture of artificial silk, from cuprammonium solutions of cellulose
FR648061D FR648061A (en) 1928-01-31 1928-02-01 Improvements in manufacturing processes for cellulose products such as artificial silk, etc. by drawing spinning starting from solutions of ammoniacal copper oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB309928A GB310864A (en) 1928-01-31 1928-01-31 Improved process for the manufacture of artificial silk, from cuprammonium solutions of cellulose

Publications (1)

Publication Number Publication Date
GB310864A true GB310864A (en) 1929-04-30

Family

ID=9751904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB309928A Expired GB310864A (en) 1928-01-31 1928-01-31 Improved process for the manufacture of artificial silk, from cuprammonium solutions of cellulose

Country Status (2)

Country Link
FR (1) FR648061A (en)
GB (1) GB310864A (en)

Also Published As

Publication number Publication date
FR648061A (en) 1928-12-05

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