US2086676A - Process for improving wool - Google Patents

Process for improving wool Download PDF

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Publication number
US2086676A
US2086676A US691093A US69109333A US2086676A US 2086676 A US2086676 A US 2086676A US 691093 A US691093 A US 691093A US 69109333 A US69109333 A US 69109333A US 2086676 A US2086676 A US 2086676A
Authority
US
United States
Prior art keywords
wool
acid
acetic acid
solution
dyed
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
US691093A
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English (en)
Inventor
Nathansohn Alexander
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.)
FIRM DEUTSCHE KUNSTSEIDEN STUD
Firm Deutsche Kunstseiden-Studiengesellschaft Mbh
Original Assignee
FIRM DEUTSCHE KUNSTSEIDEN STUD
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 FIRM DEUTSCHE KUNSTSEIDEN STUD filed Critical FIRM DEUTSCHE KUNSTSEIDEN STUD
Application granted granted Critical
Publication of US2086676A publication Critical patent/US2086676A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
    • D06M13/21—Halogenated carboxylic acids; Anhydrides, halides or salts thereof

Definitions

  • the process consists in treating wool with acid derivatives of organic acidradicals with at the most, eight carbon atoms, whilst practically no water, may be added; although it does no harm in the small amounts in which it is introduced, for example, by the customary moisture of the wool, or of the chemicals use Fundamentally every kind of wool ofany degree of operation may be subjected successfully to the process in practically dry condition, but the washing or the extraction of the wool grease by organic solvents must precede the improvm ing process.
  • the reagent When using acetic acid anhydride, the reagent is used at most in 15 percent solution in an indifferent organic solvent. There may also'be used various of the said reagent groups and reagents in combination with one another.
  • An essential feature of the new process consists in carrying out the treatment with the chemicals in question only to such an extent that the dyeing property of the wool is not appreciably affected in respect to whether the wool is to be dyed subsequently or not.
  • the avoidance of the rendering immune is therefore'a characteristic feature of the presentprocess.
  • a “moderate esteriflcation” is an esteriflcation as a result of which the physical chemical property of the material, particularly its dyeing property in the main does not practically suffer any change.
  • liquid reaction medium there are therefore preferably used solutions of the reagents in question, in organic solvents as for example solutions of 40% glacial acetic acid in benzene solutions of 10% acetic acid anhydride in carbontetrachloride or saturated solutions of formic acid, 0.2% solutions of tetrachlor acetic acid or monochlor acetic acid, 0.4% benzoic acid and so forth in one of the said solvents, whilst there is preferably used a floating ,ratio between 1:10 and 1:30. It has been found of advantage to avoid entirely oxygencontaining solvents such as alcohol, acetone and so forth or to add them at least in small quantities to the solvent free from oxygen.
  • the material When using such solutions, the material is soaked therewith preferably at temperatures between 20 and 40 C., in the case of undyed goods as a rule between 1 and 4 hours, for dyed goods between 4 and 6 hours according to the concentration of the reagent, the temperature and the reaction capacity of the material. Aftersoaking, the main mass of solvent is removed, for exwhen using formic acid or acetic acid anhydride, the acid excess adhering firmly to the material is neutralized by the addition of small quantities of ammonia to the circulating air.
  • the process may also be carried out by allowing the reagents to act ingaseous form on the material, for example while heating to 35 degrees C. or above, such as treatment for an hour in air which at about 50 C. has'been saturated with formic acid vapours. Ithas been found of advantage to charge this circulating air also with the vapour of an organic solvent such as benzene and'so forth, in addition to that of the man.
  • the action occurs, be it after days, even when the wool is stored at ordinary temperature in an atmosphere containing small hardly noticeable quantities of formic acid vapours.
  • Raw carded yarn which has been carefully freed, from grease by suitable washing, is treated for two hours in a solution of 1.4% formic acid in benzene.
  • the removal of the solution is effected as in Examples 1 and H.
  • the material has become considerably brighter, of better appearance, shrinks less on washing, also has a longer drawing and is of considerably higher value than the initial material.
  • Raw carded yarn is treated as in Example 111, but with a. saturated solution of formic acid in carbon tetrachloride. The result is the same.
  • Example Hi As in Example Hi. but with the use of a solution of 10% acetic acid anliydride in henaine. The result is the same as in Example ill.
  • Example III shows the same as in Example III, but extends mainly to the improvement 01' the dye, whilst the material does not become looser in dimensions as in the process in Example III.
  • the process of refining wool to produce softness and brightness and improve its spinning property without essential change of the dyeing capabilities thereof which comprises the steps oil immersing the clean dry wool after grease extraction in a. solution of formic acid in a vole. tile organic solvent substantially free from water and other oxygen-containing compounds at a temperature approximating degrees C. for a time substantially between 1 hour and 6 hours, whereby to effect a moderate'esterifieation, and withdrawing and separating the wool from the solution prior to any substantialchangc in the dyeing property of the wool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)
  • Treatment Of Fiber Materials (AREA)
US691093A 1930-11-04 1933-09-26 Process for improving wool Expired - Lifetime US2086676A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE2086676X 1930-11-04
FR760265T 1933-09-02
NL66553A NL38320C (en(2012)) 1930-11-04 1933-09-02
BE398470T 1933-09-05
GB24735/33A GB425475A (en) 1930-11-04 1933-09-06 A process for improving wool

Publications (1)

Publication Number Publication Date
US2086676A true US2086676A (en) 1937-07-13

Family

ID=31995363

Family Applications (1)

Application Number Title Priority Date Filing Date
US691093A Expired - Lifetime US2086676A (en) 1930-11-04 1933-09-26 Process for improving wool

Country Status (5)

Country Link
US (1) US2086676A (en(2012))
BE (1) BE398470A (en(2012))
FR (1) FR760265A (en(2012))
GB (1) GB425475A (en(2012))
NL (1) NL38320C (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483008A (en) * 1944-01-29 1949-09-27 Tewin Ind Inc Proofing proteinaceous fibers against biological attack
US2523325A (en) * 1947-07-10 1950-09-26 United Shoe Machinery Corp Tanning in a nonaqueous medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483008A (en) * 1944-01-29 1949-09-27 Tewin Ind Inc Proofing proteinaceous fibers against biological attack
US2523325A (en) * 1947-07-10 1950-09-26 United Shoe Machinery Corp Tanning in a nonaqueous medium

Also Published As

Publication number Publication date
BE398470A (en(2012)) 1933-10-31
FR760265A (fr) 1934-02-20
GB425475A (en) 1935-03-06
NL38320C (en(2012)) 1936-06-15

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