US2940818A - Production of shaped objects from viscose - Google Patents

Production of shaped objects from viscose Download PDF

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Publication number
US2940818A
US2940818A US542766A US54276655A US2940818A US 2940818 A US2940818 A US 2940818A US 542766 A US542766 A US 542766A US 54276655 A US54276655 A US 54276655A US 2940818 A US2940818 A US 2940818A
Authority
US
United States
Prior art keywords
viscose
production
bath
shaped objects
threads
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 - Lifetime
Application number
US542766A
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English (en)
Inventor
Welfers Egidius
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.)
Akzona Inc
Original Assignee
American Enka 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 Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US2940818A publication Critical patent/US2940818A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01F2/10—Addition to the spinning solution or spinning bath of substances which exert their effect equally well in either

Definitions

  • This invention relates to a process for the production from viscose of artificial threads and other shaped objects, including films, having greatly improved properties as regards their resilience and their smaller degree of swelling.
  • the invention also relates to the resulting products.
  • One of the principal objects of the present invention is to provide a new and improved method for spinning artificial products such as threads and other shaped objects from viscose in such manner as to confer upon them greatly improved properties as regards their strength and elasticity.
  • a further object of the invention is to provide a new and improved method for producing products of the kind just indicated having unusually strong and well-defined peripheral zones.
  • a still further object of the invention is to provide improved products of the kind indicated.
  • composition of the viscose should have an alkali/ cellulose ratio of less than 1, and preferably 0.5-0.8. It is expedient to use unripe viscoses, for example, those with a gamma value of 40 and higher.
  • the spinning baths preferably contain 40-65 g./l. sulphuric acid, 160-260 g./l. sodium sulphate, and more than 30 g./l. zinc sulphate, and have a temperature of 5070 C.
  • Y withdrawal speed may be further increased if use is made or known means to impart to the spinning bath, at least in the first pan: of its travel after the spinning nozzle, a speed which is substantially equal to the speed of the thread, so that the friction between the thread and the spinning bath is thereby substantially reduced.
  • the threads are stretched by -120%, preferably -100%. They then show strength values of 390 g./ den., which may be increased to 420 g./ 100 den. by a final stretching operation.
  • Example 1 A viscose with the composition 8.5% of cellulose, 5.9% of NaOH and 38% of CS (prepared from high-quality cellulose) has added thereto 0.9% of ammonium sulphide (calculated on the viscose).
  • the viscose is spun with a gamma number of 42 in a bath having the following composition: 65 g./l. H 80 235 g./l. Na SO and 50 g./l. ZnSO
  • the bath has a temperature of 55 C. and a length of 40 cm.
  • the Withdrawal speed used during the operation is 45 m./min.
  • the threads are thereafter stretched by 80% in a second bath, which contains 10 g./l. H 50 and has a temperature of 90 C.
  • the thread has a strength of 400 g./ 100 den., with an elongation of 15%; its degree of swelling is about 72%.
  • a process for the production of regenerated cellulose threads from viscose comprising incorporating into viscose 05-50% by weight based on the viscose of ammonium sulphide, extruding the mixture into an aqueous bath containing more than 30 g./l. of zinc sulphate and 40-65 g./l. sulphuric acid, and treating the resulting extruded object in a second hot bath containing dilute sulphuric acid and stretching same by a factor of 80-120%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
US542766A 1954-11-25 1955-10-25 Production of shaped objects from viscose Expired - Lifetime US2940818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE802013X 1954-11-25

Publications (1)

Publication Number Publication Date
US2940818A true US2940818A (en) 1960-06-14

Family

ID=6717557

Family Applications (1)

Application Number Title Priority Date Filing Date
US542766A Expired - Lifetime US2940818A (en) 1954-11-25 1955-10-25 Production of shaped objects from viscose

Country Status (5)

Country Link
US (1) US2940818A (fr)
BE (1) BE540588A (fr)
FR (1) FR1143029A (fr)
GB (1) GB802013A (fr)
NL (2) NL200061A (fr)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2077412A (en) * 1930-06-04 1937-04-20 Eugene J Lorand Process for the preparation of a molded cellulose foam from viscose and product thereof
US2284028A (en) * 1939-09-26 1942-05-26 Ubbelohde Leo Dry spinning process
US2506249A (en) * 1943-04-02 1950-05-02 American Enka Corp Process for manufacturing artificial chamois
US2516316A (en) * 1949-07-14 1950-07-25 Du Pont Borax spinning bath
US2535044A (en) * 1947-04-26 1950-12-26 Du Pont Spinning of viscose
US2593466A (en) * 1948-07-16 1952-04-22 Ind Rayon Corp Viscose spinning solution
US2648611A (en) * 1947-11-19 1953-08-11 American Viscose Corp Addition of urea to viscose
US2705184A (en) * 1949-08-25 1955-03-29 Textile & Chemical Res Company Process for the production of rayon products
US2732279A (en) * 1951-12-07 1956-01-24 Shozo tachikawa
US2772444A (en) * 1954-08-12 1956-12-04 Du Pont Composition comprising a polyhalogenated ethylene polymer and viscose and process of shaping the same
US2796319A (en) * 1954-04-02 1957-06-18 Schweizerische Viscose Viscose spinning process
US2884332A (en) * 1953-04-30 1959-04-28 Saul & Co Printing of textile materials and preparations therefor
US2892729A (en) * 1954-11-03 1959-06-30 American Viscose Corp Process of producing viscose rayon

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2077412A (en) * 1930-06-04 1937-04-20 Eugene J Lorand Process for the preparation of a molded cellulose foam from viscose and product thereof
US2284028A (en) * 1939-09-26 1942-05-26 Ubbelohde Leo Dry spinning process
US2506249A (en) * 1943-04-02 1950-05-02 American Enka Corp Process for manufacturing artificial chamois
US2535044A (en) * 1947-04-26 1950-12-26 Du Pont Spinning of viscose
US2648611A (en) * 1947-11-19 1953-08-11 American Viscose Corp Addition of urea to viscose
US2593466A (en) * 1948-07-16 1952-04-22 Ind Rayon Corp Viscose spinning solution
US2516316A (en) * 1949-07-14 1950-07-25 Du Pont Borax spinning bath
US2705184A (en) * 1949-08-25 1955-03-29 Textile & Chemical Res Company Process for the production of rayon products
US2732279A (en) * 1951-12-07 1956-01-24 Shozo tachikawa
US2884332A (en) * 1953-04-30 1959-04-28 Saul & Co Printing of textile materials and preparations therefor
US2796319A (en) * 1954-04-02 1957-06-18 Schweizerische Viscose Viscose spinning process
US2772444A (en) * 1954-08-12 1956-12-04 Du Pont Composition comprising a polyhalogenated ethylene polymer and viscose and process of shaping the same
US2892729A (en) * 1954-11-03 1959-06-30 American Viscose Corp Process of producing viscose rayon

Also Published As

Publication number Publication date
NL85456C (fr) 1900-01-01
GB802013A (en) 1958-09-24
NL200061A (fr) 1900-01-01
BE540588A (fr) 1900-01-01
FR1143029A (fr) 1957-09-25

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