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)

Applications Claiming Priority (5)

Publications (1)

Family

ID=31995363

Family Applications (1)

Country Status (5)

Cited By (2)

• 1933
  • 1933-09-02 FR FR760265D patent/FR760265A/fr not_active Expired
  • 1933-09-02 NL NL66553A patent/NL38320C/xx active
  • 1933-09-05 BE BE398470D patent/BE398470A/xx unknown
  • 1933-09-06 GB GB24735/33A patent/GB425475A/en not_active Expired
  • 1933-09-26 US US691093A patent/US2086676A/en not_active Expired - Lifetime

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