US2787517A - Manufacture of artificial viscose products - Google Patents

Manufacture of artificial viscose products Download PDF

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Publication number
US2787517A
US2787517A US397031A US39703153A US2787517A US 2787517 A US2787517 A US 2787517A US 397031 A US397031 A US 397031A US 39703153 A US39703153 A US 39703153A US 2787517 A US2787517 A US 2787517A
Authority
US
United States
Prior art keywords
bath
manufacture
formaldehyde
zinc
viscose
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
US397031A
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English (en)
Inventor
Lekkerkerker Arie
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 US2787517A publication Critical patent/US2787517A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins

Definitions

  • This invention relates to a new and improved method for the manufacture of artificial viscose products employing zinc compounds in a coagulating bath and an acid bath for the after-treatment.
  • the undesired separation and deposition of zinc sulphide may be prevented by adding sufficient formaldehyde to the acid after-treatment baths, still containing zinc ions, to bind at least the greater part if indeed not all of the hydrogen sulphide, but no more than 2 mols of formaldehyde per mol of hydrogen sulphide present.
  • hydrogen sulphide present which must be con- 2,787,517 Patented Apr. .2, 1957 "ice tinuously bound, is meant the sum of the amount of hydrogen sulphide that is set free in the given bath by the action of acid on the product (e. g., thread) not yet fully decomposed, and the amount of hydrogen sulphide that may be introduced into the given bath by the product (e. thread) being processed and the liquid adhering to it.
  • aldehydes such as formaldehyde
  • viscose spinning baths and also to after-treatment baths relate to a modified stenosage process.
  • the spinning baths employed no zinc ions are present.
  • formaldehyde in alkaline medium is employed in very high concentrations, and finally, the spun yarn impregnated with formaldehyde is subjected to a special after-heating in order to bring about chemical reaction between the formaldehyde and the cellulose.
  • the viscose was spun to rayon thread of high denier consisting of 700 filaments.
  • the freshly spun thread was led through an after-treatment bath maintained at 80 C. and having a content (per litre) of 15 g. of sulphuric acid, 1.2 g. of formaldehyde, and the usual metallic salts. In this bath the thread was stretched by about 78%.
  • the resulting thread of 1700 denier was wound into a centrifuge and further treated.
  • the improvement which comprises adding about 0.05% to 0.2% by weight of formaldehyde to the second bath which is sufiicient to bind the greater portion of hydrogen sulphide present but insuflicieut to exert any discernible influence on the stretching of the yarn.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
US397031A 1953-02-10 1953-12-08 Manufacture of artificial viscose products Expired - Lifetime US2787517A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL322584X 1953-02-10

Publications (1)

Publication Number Publication Date
US2787517A true US2787517A (en) 1957-04-02

Family

ID=19784045

Family Applications (1)

Application Number Title Priority Date Filing Date
US397031A Expired - Lifetime US2787517A (en) 1953-02-10 1953-12-08 Manufacture of artificial viscose products

Country Status (6)

Country Link
US (1) US2787517A (en))
BE (1) BE525171A (en))
CH (1) CH322584A (en))
FR (1) FR1091241A (en))
GB (1) GB757236A (en))
NL (1) NL77352C (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893820A (en) * 1956-07-16 1959-07-07 Du Pont Process for the production of regenerated cellulose filaments
US2935373A (en) * 1957-03-27 1960-05-03 Du Pont Process comprising washing rayon in cake form with an aqueous solution of a lower aliphatic aldehyde
US2937070A (en) * 1955-08-02 1960-05-17 Du Pont Viscose process
US3007766A (en) * 1958-01-04 1961-11-07 American Enka Corp Production of viscose rayon

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111372369B (zh) 2018-12-25 2023-07-07 奥特斯科技(重庆)有限公司 具有部件屏蔽的部件承载件及其制造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452130A (en) * 1943-12-17 1948-10-26 American Enka Corp Method of spinning high tenacity viscose rayon

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452130A (en) * 1943-12-17 1948-10-26 American Enka Corp Method of spinning high tenacity viscose rayon

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937070A (en) * 1955-08-02 1960-05-17 Du Pont Viscose process
US2893820A (en) * 1956-07-16 1959-07-07 Du Pont Process for the production of regenerated cellulose filaments
US2935373A (en) * 1957-03-27 1960-05-03 Du Pont Process comprising washing rayon in cake form with an aqueous solution of a lower aliphatic aldehyde
US3007766A (en) * 1958-01-04 1961-11-07 American Enka Corp Production of viscose rayon

Also Published As

Publication number Publication date
BE525171A (en))
CH322584A (de) 1957-06-30
FR1091241A (fr) 1955-04-08
NL77352C (en))
GB757236A (en) 1956-09-19

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