US2777775A - Production of artificial filaments, threads, and the like - Google Patents

Production of artificial filaments, threads, and the like Download PDF

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Publication number
US2777775A
US2777775A US429640A US42964054A US2777775A US 2777775 A US2777775 A US 2777775A US 429640 A US429640 A US 429640A US 42964054 A US42964054 A US 42964054A US 2777775 A US2777775 A US 2777775A
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United States
Prior art keywords
viscose
production
filaments
threads
percent
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Expired - Lifetime
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US429640A
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Edwards John Harold
Tallis Ernest Edward
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Akzo Nobel UK PLC
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Courtaulds PLC
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    • 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

  • the cellulose molecules of the skin are believed to be more highly orientated than those of the core.
  • the object of the present invention is to obtain modified viscose filaments which have a skin substantially thicker 7 than is normally obtained.
  • a process for the production of artificial filaments comprises extruding viscose containing at least 0.1 millimole cose of a diaryl thiourea having the general formula where R1 and R3 are hydrogen or aliphatic or aryl radicals and R2 and R4 are aryl radicals, into an aqueous coagulating bath containing sulphuric acid, sodium sulphate and zinc sulphate.
  • the preferred minimum concentration for addition to the viscose is one millimole per 100 grams of.
  • the coagulating bath preferably contains from /2 to 15 percent of zinc sulphate.
  • the present invention also includes viscose containing at least 0.1 millimole per 100 grams of the viscose of a diaryl thiourea having The general formula wherein R1 and R3 are hydrogen or aliphatic or radicals and R2 and R4 are aryl radicals.
  • the preferred diaryl thiourea for present invention is thiocarbanilide
  • the filaments obtained by the use according to the Example Viscose containing 7.4 percent of cellulose, 7.0 percent of caustic soda and 1.1 percent of combined sulphur was prepared in the usual manner. 1.0 millimole per 100 grams of viscose of thiocarbanilide was added and the viscose was mixed for one hour. When the viscose was 48 hours old from the beginning of the mixing stage and had a salt figure of 5.7 it was ready for spinning.
  • the filaments had a non-crenulated surface and the filaments were bean shaped in cross-section.
  • the amount of skin was at least 50 percent greater than the amount What we claim is:
  • Viscose containing at least 0.1 millimole per grams of the viscose of thiocarbanilide.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)

Description

Jan. 15, 1957 H. EDWARDS ET L PRODUCTION OF ARTIFICIAL FILAMENTS, THREADS, AND T Filed May 15, 1954 HE LIKE 1 (l'laim. (Cl. 10t:165)
section or" the filaments under specific conditions with selected dyestuffs. In addition to the difference in dyeing afiiuity and in swelling property between the skin and core,
- the cellulose molecules of the skin are believed to be more highly orientated than those of the core.
The object of the present invention is to obtain modified viscose filaments which have a skin substantially thicker 7 than is normally obtained.
According to the present invention a process for the production of artificial filaments comprises extruding viscose containing at least 0.1 millimole cose of a diaryl thiourea having the general formula where R1 and R3 are hydrogen or aliphatic or aryl radicals and R2 and R4 are aryl radicals, into an aqueous coagulating bath containing sulphuric acid, sodium sulphate and zinc sulphate.
The preferred minimum concentration for addition to the viscose is one millimole per 100 grams of.
maximum concentration is 10 millimoles per 100 grams of viscose. a skin substantially thicker thiourea necessary to give a desired cross-sectional shape and a surface free from crenulations. The coagulating bath preferably contains from /2 to 15 percent of zinc sulphate.
The present invention also includes viscose containing at least 0.1 millimole per 100 grams of the viscose of a diaryl thiourea having The general formula wherein R1 and R3 are hydrogen or aliphatic or radicals and R2 and R4 are aryl radicals.
aryl 7 Patented Jan. 15, 1957 The preferred diaryl thiourea for present invention is thiocarbanilide In addition to the stantial increase in skin thickness the filaments obtained by the use according to the Example Viscose containing 7.4 percent of cellulose, 7.0 percent of caustic soda and 1.1 percent of combined sulphur was prepared in the usual manner. 1.0 millimole per 100 grams of viscose of thiocarbanilide was added and the viscose was mixed for one hour. When the viscose was 48 hours old from the beginning of the mixing stage and had a salt figure of 5.7 it was ready for spinning.
through a jet having 750 holes, each 0.003 inch in diameter, into an aqueous coagulating bath containing 9.5 percent of sulphuric acid, 20 percent of sodium sulphate and 4.5 percent of zinc sulphate to give a thread of 1550 denier and 750 filaments. The length of immersion in the bath was 24 inches and the temperature of the bath was 48 C. The thread was drawn from the bath at a rate of 28 metres per minute by a godet and then passed through a dilute sulphuric acid bath maintained at a temperature of C. to a second godet rotating at a higher speed than the first godet, to impart an 80 percent stretch to the thread. The thread was collected in a centrifugal spinning box rotating at 4000 revolutions per minute. The cake obtained was washed free from acid, a suitable finish was applied and the cake was dried.
The filaments had a non-crenulated surface and the filaments were bean shaped in cross-section. The amount of skin was at least 50 percent greater than the amount What we claim is:
Viscose containing at least 0.1 millimole per grams of the viscose of thiocarbanilide.
References Cited in the file of this patent UNITED STATES PATENTS 2,118,293 Brinker May 24, 1938 2,322,981 Ubbelohde June 29, 1943 2,435,295 Stasse Feb. 3, 1948
US429640A 1953-06-25 1954-05-13 Production of artificial filaments, threads, and the like Expired - Lifetime US2777775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17617/53A GB748147A (en) 1953-06-25 1953-06-25 Improvements in and relating to the production of artificial filaments, threads and the like from viscose

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875078A (en) * 1955-08-22 1959-02-24 Atlas Powder Co Spinning of viscose
US2876124A (en) * 1955-08-22 1959-03-03 Atlas Powder Co Spinning of viscose
US2912299A (en) * 1954-09-03 1959-11-10 Chimotex Sa Process of spinning viscose containing thiodiglycol
US2914375A (en) * 1954-05-12 1959-11-24 American Enka Corp Manufacture of viscose thread
US2941892A (en) * 1955-01-31 1960-06-21 Atlas Powder Co Spinning of viscose
US2953463A (en) * 1951-06-30 1960-09-20 Monsanto Chemicals Fire-retardant cellulosic compositions and process for producing fire-retardant cellulosic structures therefrom
US2970883A (en) * 1956-01-16 1961-02-07 American Enka Corp Manufacture of viscose rayon
US2971817A (en) * 1955-06-29 1961-02-14 American Viscose Corp Producing all skin rayon
US2979376A (en) * 1955-06-29 1961-04-11 American Viscose Corp Production of rayon
US2983572A (en) * 1958-06-06 1961-05-09 American Enka Corp Manufacture of viscose rayon
US3509931A (en) * 1965-10-05 1970-05-05 Continental Gummi Werke Ag Fiber reinforcing belt for vehicle tires
US5482776A (en) * 1988-10-05 1996-01-09 Asahi Kasei Kogyo Kabushiki Kaisha Viscose rayon fiber having superior appearance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2118293A (en) * 1935-03-20 1938-05-24 Frederic A Brinker Thiocarbanilid derivative
US2322981A (en) * 1934-11-21 1943-06-29 Ubbelohde Leo Cellulose product
US2435295A (en) * 1945-05-18 1948-02-03 Allied Chem & Dye Corp Preparation of thiocarbanilide and its homologs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322981A (en) * 1934-11-21 1943-06-29 Ubbelohde Leo Cellulose product
US2118293A (en) * 1935-03-20 1938-05-24 Frederic A Brinker Thiocarbanilid derivative
US2435295A (en) * 1945-05-18 1948-02-03 Allied Chem & Dye Corp Preparation of thiocarbanilide and its homologs

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953463A (en) * 1951-06-30 1960-09-20 Monsanto Chemicals Fire-retardant cellulosic compositions and process for producing fire-retardant cellulosic structures therefrom
US2914375A (en) * 1954-05-12 1959-11-24 American Enka Corp Manufacture of viscose thread
US2912299A (en) * 1954-09-03 1959-11-10 Chimotex Sa Process of spinning viscose containing thiodiglycol
US2941892A (en) * 1955-01-31 1960-06-21 Atlas Powder Co Spinning of viscose
US2971817A (en) * 1955-06-29 1961-02-14 American Viscose Corp Producing all skin rayon
US2979376A (en) * 1955-06-29 1961-04-11 American Viscose Corp Production of rayon
US2875078A (en) * 1955-08-22 1959-02-24 Atlas Powder Co Spinning of viscose
US2876124A (en) * 1955-08-22 1959-03-03 Atlas Powder Co Spinning of viscose
US2970883A (en) * 1956-01-16 1961-02-07 American Enka Corp Manufacture of viscose rayon
US2983572A (en) * 1958-06-06 1961-05-09 American Enka Corp Manufacture of viscose rayon
US3509931A (en) * 1965-10-05 1970-05-05 Continental Gummi Werke Ag Fiber reinforcing belt for vehicle tires
US5482776A (en) * 1988-10-05 1996-01-09 Asahi Kasei Kogyo Kabushiki Kaisha Viscose rayon fiber having superior appearance

Also Published As

Publication number Publication date
GB748147A (en) 1956-04-25

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