US2457856A - Chemical retting process of producing bast fibers - Google Patents

Chemical retting process of producing bast fibers Download PDF

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Publication number
US2457856A
US2457856A US326496A US32649640A US2457856A US 2457856 A US2457856 A US 2457856A US 326496 A US326496 A US 326496A US 32649640 A US32649640 A US 32649640A US 2457856 A US2457856 A US 2457856A
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United States
Prior art keywords
treatment
bath
materials
urea
chemical
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Expired - Lifetime
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US326496A
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English (en)
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Zechuisen Jacob Johan
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
    • D01C1/00—Treatment of vegetable material
    • D01C1/02—Treatment of vegetable material by chemical methods to obtain bast fibres

Definitions

  • Patented Jan. 4, 1949 CHEMICAL RETTING PROCESS OF PRODUCING nssr means Jacob Johan Zeehulsen, Scheveningen, Netherlands; vested in the Attorney General of the United States No Drawing. Application March 28, 1940, Serial 2 Claims.
  • the invention relates to the treatment of fibrous materials, particularly to the production of bast fibres, such as flax, hemp, jute and the like.
  • the function of the bufier materials most likely resides in that they combine with the acids produced by the oxidation, so that there will no considerable increase of the acidity.
  • the urea moreover forms a reserve of ammonia in the form of a compound having a non-alkaline reaction, which compound slowly decomposes; the ammonia produced thereby will replace the ammonia which is formed by the dissociation of the ammonium salts and evaporates from the solution.
  • Suitable bufier materials are e. g. phosphates.
  • the treatment generally is carried out at atmospheric pressure; it is also possible, however, to work in vacuo or under pressure, this latter particularly if it should be desired to carry out the treatment at temperatures above C.
  • a bath containing hydrogen peroxide, urea and a bufier substance immerse the material to be treated in the same and slowly raise the temperatureup to the range oi temperatures required for the breaking up process.
  • the period before this temperature is attained mainly serves for impregnating the fibrous material with the solution.
  • the material treated according to the invention will contain the xyloid constituents in such a form as to be easily removed by mechanical means. According to the intensity of the chemical treatment either white or light yellow, strong, glossy fibres will be obtained.
  • an after-treatment for the removal of the remaining coloring substances may be efiected by processes known for this purpose, e. g. bleaching by the action of the light or by treatment with alcohols or ketones, such as acetone.
  • waste bath which canot be regenerated without a great deal of trouble
  • the waste bath which canot be regenerated without a great deal of trouble
  • the cost of the breaking up treatment is greatly reduced thereby and in many cases the, process will only be economically possible when the used chemicals are utilized in this way.
  • the broken up fibrous material is now rinsed with hot water to which a little acid is added.
  • a reducing acid such as hydrogen sulphide is used for this purpose.
  • the hydrogen peroxide may be added to the bath as such; it may also be electrolytically formed in the bath, in which case the urea will stabilize the hydrogen peroxide thus formed.
  • the urea if desired, may be formed from ammonia and carbon dioxide, wherebya mixture of urea and ammonium carbonate is produced.
  • the invention is of importance in the first place in the treatment of bast fibres, such as fiax, hemp, jute, ramie and the like.
  • bast fibres such as fiax, hemp, jute, ramie and the like.
  • the process has also particular advantages for the manufacture of leaf fibres which up to the present have been produced by a kind of a retting process such as sisal, New Zealand hemp and Mauritius-hemp.
  • a chemical retting process of producing bast fibres from vegetable materials which comprises the treatment of said fibres from one to one and one-half hours by immersing said materials in a bath containing about 0.5% oi! hydrogen peroxide, 0.5% of ammonium phosphate, and 1% of urea. at a temperature 01' about 0., raising the temperature 0! said bath and materials to C. to thereby break up said materials, and subsequently removing the xyloid constituents from the material treated by mechanical means.
  • a chemical rotting process of producing bast fibres from vegetable materials which comprises the treatment 01 said fibres from one to one and one-half hours by immersing said materials in a bath containing about 0.5% of hydrogen peroxide, 0.5% of ammonium phosphate, 0.5% to 1% of ammonium carbonate, and 1% of urea at a tem-- perature of about 50 0., raising the temperature of said bath and materials to 80-100 C. to thereby break up said materials, and subsequently removing the xyloid constituents from the material treated by mechanical means.

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  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Textile Engineering (AREA)
  • Fertilizers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Paper (AREA)
US326496A 1939-03-22 1940-03-28 Chemical retting process of producing bast fibers Expired - Lifetime US2457856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL92551A NL54060C (en)) 1939-03-22 1939-03-22

Publications (1)

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US2457856A true US2457856A (en) 1949-01-04

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US (1) US2457856A (en))
BE (1) BE438397A (en))
DE (1) DE738608C (en))
FR (1) FR864319A (en))
GB (1) GB544219A (en))
NL (1) NL54060C (en))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771361A (en) * 1951-12-07 1956-11-20 Process Evaluation Devel Defibration processes
US3481828A (en) * 1965-03-05 1969-12-02 Hardman & Holden Ltd Bleaching of wood pulp with thiourea dioxide and zinc sulfate
US4002526A (en) * 1975-10-10 1977-01-11 International Paper Company Oxygen-alkali delignification of low consistency wood pulp
US4851082A (en) * 1987-04-22 1989-07-25 Director General Of Agency Of Industrial Science And Technology Pulping process
CN115262059A (zh) * 2022-07-21 2022-11-01 深圳市亿卓服饰科技有限公司 一种棉织物及其制备方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL54060C (en)) * 1939-03-22 1942-10-15
EP0931862A1 (en) * 1998-01-23 1999-07-28 Instituut Voor Agrotechnologisch Onderzoek (Ato-Dlo) Process for the production of elementary vegetable bast fibres
CN101250758B (zh) * 2008-01-23 2010-06-02 南漳地利银花麻业有限公司 一种苎麻脱胶剂的制作方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191110812A (en) * 1911-05-04 1912-08-06 Oswald Silberrad Improvements in and relating to the Retting of Flax Straw.
FR470128A (fr) * 1913-09-25 1914-08-21 Jacques Meister Traitement des matières textiles brutes
DE328597C (de) * 1920-02-05 1920-10-29 Gustav Strauss Verfahren zur Herstellung von Gespinstfasern aus Stroh und aehnlichen Stoffen
US1758920A (en) * 1926-09-16 1930-05-20 Chem Fab Weissenstein G M B H Stabilized peroxide solution
US1842024A (en) * 1929-05-17 1932-01-19 Rohm & Haas Process for retting fibers
US1941793A (en) * 1931-08-21 1934-01-02 Fibres Textiles Retting process of textile materials
US2096400A (en) * 1935-08-29 1937-10-19 Kritchevsky Wolf Bleaching of wood
US2220682A (en) * 1939-05-10 1940-11-05 Buffalo Electro Chem Co Method of bleaching fibers of vegetable origin
NL54060C (en)) * 1939-03-22 1942-10-15

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191110812A (en) * 1911-05-04 1912-08-06 Oswald Silberrad Improvements in and relating to the Retting of Flax Straw.
FR470128A (fr) * 1913-09-25 1914-08-21 Jacques Meister Traitement des matières textiles brutes
DE328597C (de) * 1920-02-05 1920-10-29 Gustav Strauss Verfahren zur Herstellung von Gespinstfasern aus Stroh und aehnlichen Stoffen
US1758920A (en) * 1926-09-16 1930-05-20 Chem Fab Weissenstein G M B H Stabilized peroxide solution
US1842024A (en) * 1929-05-17 1932-01-19 Rohm & Haas Process for retting fibers
US1941793A (en) * 1931-08-21 1934-01-02 Fibres Textiles Retting process of textile materials
US2096400A (en) * 1935-08-29 1937-10-19 Kritchevsky Wolf Bleaching of wood
NL54060C (en)) * 1939-03-22 1942-10-15
US2220682A (en) * 1939-05-10 1940-11-05 Buffalo Electro Chem Co Method of bleaching fibers of vegetable origin

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771361A (en) * 1951-12-07 1956-11-20 Process Evaluation Devel Defibration processes
US3481828A (en) * 1965-03-05 1969-12-02 Hardman & Holden Ltd Bleaching of wood pulp with thiourea dioxide and zinc sulfate
US4002526A (en) * 1975-10-10 1977-01-11 International Paper Company Oxygen-alkali delignification of low consistency wood pulp
US4851082A (en) * 1987-04-22 1989-07-25 Director General Of Agency Of Industrial Science And Technology Pulping process
CN115262059A (zh) * 2022-07-21 2022-11-01 深圳市亿卓服饰科技有限公司 一种棉织物及其制备方法
CN115262059B (zh) * 2022-07-21 2024-01-19 深圳市亿卓服饰科技有限公司 一种棉织物及其制备方法

Also Published As

Publication number Publication date
GB544219A (en) 1942-04-02
FR864319A (fr) 1941-04-29
DE738608C (de) 1943-08-25
NL54060C (en)) 1942-10-15
BE438397A (en)) 1940-04-30

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