US2024038A - Process for discharging dyeings on wool - Google Patents

Process for discharging dyeings on wool Download PDF

Info

Publication number
US2024038A
US2024038A US748533A US74853334A US2024038A US 2024038 A US2024038 A US 2024038A US 748533 A US748533 A US 748533A US 74853334 A US74853334 A US 74853334A US 2024038 A US2024038 A US 2024038A
Authority
US
United States
Prior art keywords
discharge
wool
dyeings
discharging
parts
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
US748533A
Inventor
Haller Robert
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 SOCIETY OF CHEMICAL INDUSTRY IN BASLE
SOC OF CHEMICAL IND
Original Assignee
SOC OF CHEMICAL IND
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 SOC OF CHEMICAL IND filed Critical SOC OF CHEMICAL IND
Application granted granted Critical
Publication of US2024038A publication Critical patent/US2024038A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/15—Locally discharging the dyes
    • D06P5/155—Locally discharging the dyes with reductants

Definitions

  • Patented Dec. 10, 1935 UNITED STATES PROCESS FOR DISCHARGING DYEINGS ON WOOL Robert Haller, Riehen, near Basel, Switzerland, assignor to firm Society of Chemical Industry in Basle, Basel, Switzerland No Drawing. Application October 16, 1934, Serial No. 748,533. In Switzerland October 21, 1933 4 Claims.
  • This invention relates to a process in which this difiiculty is avoided or minimized and consists in adding to the discharge paste a compound which, during the steaming, reacts with sulfides.
  • a compound which, during the steaming, reacts with sulfides.
  • Such compounds are, for example, those containing a. halogen atom capable of exchange such as salts of chloroacetic acids or other halogen fatty acids.
  • Such acids are for instance mixtures of monodiand trichloroacetic acid which are formed in the chlorination of acetic acid. Further also such acids as bromoacetic acid, chloroproprionic acid, etc.
  • the usual procedure is followed, namely the printing of the discharge paste, steaming and washing. It has been found that the purity of the discharge printing is greatly enhanced if the discharge paste is mixed with a hygroscopic agent such as glycerine, thiodiglycol, urea or a mixture of such compounds. Also zinc oxide or lithopone may be added to the discharge paste.
  • a hygroscopic agent such as glycerine, thiodiglycol, urea or a mixture of such compounds.
  • zinc oxide or lithopone may be added to the discharge paste.
  • Subject matter of the present invention are further also the compositions of matter which are used for carrying out the new discharge process.
  • These are discharge pastes for wool printing containing, besides the usual thickenings and other additions and a sulfoxylate, one of the above named substances which react with sulfides during the steaming operation.
  • Example 1 A discharge paste is prepared by introducing 25 parts of a mixture consisting of 70 per cent of sodium sulfoxylate and 30 per cent of zinc oxide, 10 parts of glycerine, 10 parts of sodium monochloracetate and 10 parts of urea into 50 parts of a British gum thickening (1:1).
  • the wool fabric dye with a dyestuff capable of discharge is printed with this discharge paste and then steamed with moist steam in the rapid steamer for 5-6 minutes whereby the discharge becomes effective at the printed parts.
  • the discharge fabric is thoroughly washed.
  • the discharge paste containing no sodium monochloracetate gives rise to a strong weakening of the fibres of the discharge parts a paste made as described in the present example exerts far less weakening effect on the fibre.
  • Example 2 The dyeing capable of discharge is printed with a discharge paste Without the addition of urea prescribed in Example 1 and in the manner described in Example 1.
  • Example 3 Chlorinated wool which has been dyed with a dyeing capable of discharge is printed with the 10 following discharge pastezegrams of British gum (1:1), 25 grams of a. mixture consisting of '70 parts of sodium sulfoxylate and 30 parts of zinc oxide, 15 grams of thio-diglycol and 10 grams of a mixture of the r alkali salts of the various chloracetic acids are thoroughly mixed.
  • the print is steamed in a Mather-Flatt apparatus for 4-5 minutes, washed in warm water and lightly soaped at 50 C.
  • Example 4 Woollen fabric dyed with Benzyl Bordeaux B (compare Schultz Farbstoiitabellen, 7th edition, No. 120) is printed with a discharge paste consisting of 300 grams of gum arabic (1:1), 350 grams of a mixture of parts of soduim sulfoxylate and 30 parts of zinc oxide, grams of glycerine and grams of titanium white (1:1), 70 grams of sodium monochloracetate and 30 grams of Quinoline yellow (compare Schultz Fargstofftabellen, 6th edition, No. 613) and '70 grams of water.
  • the goods are steamed in the rapid steamer for 5 minutes and washed. There is obtained a yellow discharge efiect on'a red ground.
  • a process of discharging dyeings on wool by means of sulfoxylates consisting in using a discharge paste containing besides the thickening and the usual additions the salt of an 40 aliphatic halogen-acetic acid.
  • a process of discharging dyeings on wool by means of sulfoxylates consisting in using a discharge paste containing besides the thickening and the usual additions a salt of a halogen-acetic 45 acid.
  • a process of discharging dyeings on wool by means of sulfoxylates consisting in using a discharge paste containing besides the thickening and the usual additions a salt of a chloro-acetic 50 acid.
  • a process of discharging dyeings on wool by means of sulfoxylates consisting in using a discharge paste containing besides the thickening and the usual additions a salt of monochloro- 55 acetic acid.

Description

Patented Dec. 10, 1935 UNITED STATES PROCESS FOR DISCHARGING DYEINGS ON WOOL Robert Haller, Riehen, near Basel, Switzerland, assignor to firm Society of Chemical Industry in Basle, Basel, Switzerland No Drawing. Application October 16, 1934, Serial No. 748,533. In Switzerland October 21, 1933 4 Claims.
It is known that many dyestufis can be discharged on wool with the aid of sulfoxylates. Among the decomposition products of the sulfoxylates which are produced in the operation are 5 sulfides which attack the wool very strongly so that the discharged parts easily become tender.
This invention relates to a process in which this difiiculty is avoided or minimized and consists in adding to the discharge paste a compound which, during the steaming, reacts with sulfides. Such compounds are, for example, those containing a. halogen atom capable of exchange such as salts of chloroacetic acids or other halogen fatty acids. Such acids are for instance mixtures of monodiand trichloroacetic acid which are formed in the chlorination of acetic acid. Further also such acids as bromoacetic acid, chloroproprionic acid, etc.
The usual procedure is followed, namely the printing of the discharge paste, steaming and washing. It has been found that the purity of the discharge printing is greatly enhanced if the discharge paste is mixed with a hygroscopic agent such as glycerine, thiodiglycol, urea or a mixture of such compounds. Also zinc oxide or lithopone may be added to the discharge paste.
Subject matter of the present invention are further also the compositions of matter which are used for carrying out the new discharge process. These are discharge pastes for wool printing containing, besides the usual thickenings and other additions and a sulfoxylate, one of the above named substances which react with sulfides during the steaming operation.
The following examples illustrate the invention, the parts being by weight:-
Example 1 A discharge paste is prepared by introducing 25 parts of a mixture consisting of 70 per cent of sodium sulfoxylate and 30 per cent of zinc oxide, 10 parts of glycerine, 10 parts of sodium monochloracetate and 10 parts of urea into 50 parts of a British gum thickening (1:1).
The wool fabric dye with a dyestuff capable of discharge is printed with this discharge paste and then steamed with moist steam in the rapid steamer for 5-6 minutes whereby the discharge becomes effective at the printed parts. The discharge fabric is thoroughly washed. Whereas the discharge paste containing no sodium monochloracetate gives rise to a strong weakening of the fibres of the discharge parts a paste made as described in the present example exerts far less weakening effect on the fibre.
Example 2 The dyeing capable of discharge is printed with a discharge paste Without the addition of urea prescribed in Example 1 and in the manner described in Example 1.
Example 3 Chlorinated wool which has been dyed with a dyeing capable of discharge is printed with the 10 following discharge pastezegrams of British gum (1:1), 25 grams of a. mixture consisting of '70 parts of sodium sulfoxylate and 30 parts of zinc oxide, 15 grams of thio-diglycol and 10 grams of a mixture of the r alkali salts of the various chloracetic acids are thoroughly mixed. The print is steamed in a Mather-Flatt apparatus for 4-5 minutes, washed in warm water and lightly soaped at 50 C.
Example 4 Woollen fabric dyed with Benzyl Bordeaux B (compare Schultz Farbstoiitabellen, 7th edition, No. 120) is printed with a discharge paste consisting of 300 grams of gum arabic (1:1), 350 grams of a mixture of parts of soduim sulfoxylate and 30 parts of zinc oxide, grams of glycerine and grams of titanium white (1:1), 70 grams of sodium monochloracetate and 30 grams of Quinoline yellow (compare Schultz Fargstofftabellen, 6th edition, No. 613) and '70 grams of water. The goods are steamed in the rapid steamer for 5 minutes and washed. There is obtained a yellow discharge efiect on'a red ground.
What I claim is:-
1. A process of discharging dyeings on wool by means of sulfoxylates, consisting in using a discharge paste containing besides the thickening and the usual additions the salt of an 40 aliphatic halogen-acetic acid.
2. A process of discharging dyeings on wool by means of sulfoxylates, consisting in using a discharge paste containing besides the thickening and the usual additions a salt of a halogen-acetic 45 acid.
3. A process of discharging dyeings on wool by means of sulfoxylates, consisting in using a discharge paste containing besides the thickening and the usual additions a salt of a chloro-acetic 50 acid.
4. A process of discharging dyeings on wool by means of sulfoxylates, consisting in using a discharge paste containing besides the thickening and the usual additions a salt of monochloro- 55 acetic acid.
ROBERT HALLER.
US748533A 1933-10-21 1934-10-16 Process for discharging dyeings on wool Expired - Lifetime US2024038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2024038X 1933-10-21

Publications (1)

Publication Number Publication Date
US2024038A true US2024038A (en) 1935-12-10

Family

ID=4567168

Family Applications (1)

Application Number Title Priority Date Filing Date
US748533A Expired - Lifetime US2024038A (en) 1933-10-21 1934-10-16 Process for discharging dyeings on wool

Country Status (1)

Country Link
US (1) US2024038A (en)

Similar Documents

Publication Publication Date Title
US2003928A (en) Stripping and discharging dyed textiles
US2019124A (en) Stripping agent
US4011042A (en) Oxidation of vat and sulfur dyes
US2024038A (en) Process for discharging dyeings on wool
US2067928A (en) Vat dyeing process and composition
US2206535A (en) Stripping dyed textile
US1868300A (en) Dyeing, printing, and like process
US1990852A (en) Process of producing prints or dis
US2521485A (en) Method of printing with sulfuric acid esters of leuco vat dyes of the anthraquinone series
US2052612A (en) Stripping dyed textiles
US1850551A (en) Dyeing or printing
US2187453A (en) Process for producing dyeings
US1920166A (en) Vax and sulphur dyestuff
DE1041912B (en) Process for dyeing or printing cellulosic textile fabrics
US2450767A (en) Vat dyeing of alkali-sensitive fibers, including an acid reduction of the vat dye impregnated fibers
US2182140A (en) Process for producing reserves under dyeings of ester salts of leuco vat dyestuffs
US2182553A (en) Process for treating artificial casein fibers
US2204932A (en) Process for producing dyeings
DE1100587B (en) Process for dyeing and printing structures made from native and regenerated cellulose
US3046077A (en) Process for the preparation of printing dyes from vat dyes and sulfur dyes, not suitable by themselves for printing purposes
DE848794C (en) Process for the etching of copper-containing colors of substantive azo dyes
US1903870A (en) Process for dyeing and printing textile fibers
US1663451A (en) Process of dyeing with basic dyestuffs involving the use of aryl derivatives of amides of aromatic hydroxycarboxylic acids as mordants
US2503300A (en) Development of sulfuric acid esters of leuco vat dyes using hydroxylammonium salts
DE639288C (en) Process for the production of water-insoluble azo dyes on the fiber