US1696164A - Use of sulphoxylates for stripping dyes - Google Patents
Use of sulphoxylates for stripping dyes Download PDFInfo
- Publication number
- US1696164A US1696164A US166272A US16627227A US1696164A US 1696164 A US1696164 A US 1696164A US 166272 A US166272 A US 166272A US 16627227 A US16627227 A US 16627227A US 1696164 A US1696164 A US 1696164A
- Authority
- US
- United States
- Prior art keywords
- zinc
- sodium
- sulphoxylate
- formaldehyde
- soluble
- 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
Links
- 239000000975 dye Substances 0.000 title description 6
- HRKQOINLCJTGBK-UHFFFAOYSA-N dihydroxidosulfur Chemical class OSO HRKQOINLCJTGBK-UHFFFAOYSA-N 0.000 title description 2
- VYGBQXDNOUHIBZ-UHFFFAOYSA-L sodium formaldehyde sulphoxylate Chemical compound [Na+].[Na+].O=C.[O-]S[O-] VYGBQXDNOUHIBZ-UHFFFAOYSA-L 0.000 description 11
- 150000003751 zinc Chemical class 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 159000000000 sodium salts Chemical class 0.000 description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 4
- 239000011686 zinc sulphate Substances 0.000 description 4
- 235000009529 zinc sulphate Nutrition 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- WDHSSYCZNMQRNF-UHFFFAOYSA-L ctk1a4617 Chemical compound [Zn+2].O=C.[O-]S[O-] WDHSSYCZNMQRNF-UHFFFAOYSA-L 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 2
- 239000004246 zinc acetate Substances 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- YOOCQBNGNABQHG-UHFFFAOYSA-L [Zn+2].[O-]S[O-] Chemical compound [Zn+2].[O-]S[O-] YOOCQBNGNABQHG-UHFFFAOYSA-L 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000000266 injurious effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 235000013904 zinc acetate Nutrition 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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
- D06P5/13—Fugitive dyeing or stripping dyes
- D06P5/138—Fugitive dyeing or stripping dyes fugitive dyeing
Definitions
- sodium sulphoxylate formaldehyde has been suggested as a desirable agent for stripping dyes from animal and vegetable fibres, due to its relatively low cost, its solubility in water and the fact that it need not be used in an alkaline solution (as in the case of sodium hydrosulphite for example) which would have an injurious effect on animal fibres.
- alkaline solution as in the case of sodium hydrosulphite for example
- the present invention relates to a method whereby sodium sulphoxylate formaldehyde can be used advantageously, and is. based upon my discovery that if the sodium salt is combined with a water-soluble salt of zinc, the sodium salt will be stabilized and give very efficient results.
- Zinc salts that may be used for this purpose include zinc sulphate, zinc chloride, zinc acetate or other salts of a similar nature. Inasmuch as it is desirable to add more or less acid to the stripping bath, some or all of the zinc may be added in a form which will combine with such acid to form a soluble zinc salt. For example, zinc oxide and sulphuric or acetic acid may be added instead of zinc sulphate or zinc acetate. However, in this case, as in the other, the bath will comprise a solution of sodium formaldehyde sulphoxylate mixed with a soluble zinc salt.
- the sodium formaldehyde sulphoxylate and the zincv salt may be prepared in dry powdered form and mixed to ether in the proper proportions and store or sold mixed to ether. They are then immediately available or use in preparing an efiicient stripping bath.
- the method of preparing a bath for stripping d es from fibres which comprises the steps of dissolving together sodium sulphoxylate formaldehyde and a soluble zinc salt whereby an equllibrium of soluble ingredients is obtained comprising sodium Sillphoxylate formaldehyde and zinc sulphoxylate formaldehyde.
- a composition of matter adapted for use in the production of a bath for stripping dyes comprising sodium sulphoxylate formaldehyde and a substantial amount of a soluble zinc salt, mixed together in powdered form, and adapted when dissolved in water to form a bath comprising dissolved substances in equilibrium, such substances comprising sodium sulphoxylate formaldehyde and a soluble zinc salt on the one hand and soluble zinc sulphoxylate formaldehyde and a soluble sodium salt on the other hand.
- composition as specified in claim.3 in which the amount of soluble zinc salt ,is 10 about half of the amount of sodium formaldehyde sulphoxylate.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Description
Patented Dec. 18,- 1928.
UNITED STATES PATENT OFFICE.
CHARLES S. HOLLANDER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB TO ROHM & HAAS COMPANY, A CORPORATION OF DELAWARE.
USE OF SULPHOXYLATES FOR STRIPPING DYES.
No Drawing.
The use of sodium sulphoxylate formaldehyde has been suggested as a desirable agent for stripping dyes from animal and vegetable fibres, due to its relatively low cost, its solubility in water and the fact that it need not be used in an alkaline solution (as in the case of sodium hydrosulphite for example) which would have an injurious effect on animal fibres. However, experience has shown that this substance has a tendency to break down too rapidly and deposit sulphur on the goods, which seriously interferes with subsequent dyeing operations.
The present invention relates to a method whereby sodium sulphoxylate formaldehyde can be used advantageously, and is. based upon my discovery that if the sodium salt is combined with a water-soluble salt of zinc, the sodium salt will be stabilized and give very efficient results. Zinc salts that may be used for this purpose include zinc sulphate, zinc chloride, zinc acetate or other salts of a similar nature. Inasmuch as it is desirable to add more or less acid to the stripping bath, some or all of the zinc may be added in a form which will combine with such acid to form a soluble zinc salt. For example, zinc oxide and sulphuric or acetic acid may be added instead of zinc sulphate or zinc acetate. However, in this case, as in the other, the bath will comprise a solution of sodium formaldehyde sulphoxylate mixed with a soluble zinc salt.
In this case, as in my earlier Patent No. 1,594,670, dated August 8, 1926, an equilib rium is established, but whereas in the former case the equilibrium involved some insoluble ingredients, in the present case all of the essential ingredients are soluble, for zinc hydroxide is not necessarily present as before and the soluble normal zinc sulphoxylate formaldehyle is present instead of the substantially insoluble basic compound, as shown by the following formula:
While the amount of zinc used may be varied within substantial limits, I find that efficient results can be obtained by using about half as much of the zinc salt as oft-he sulphoxylate; for example, 70% of sodium formaldehyde sulphoxylate and 30% of anhydrous zinc sulphate will give good results.
Application filed February 5, 1927. Serial No. 166,272.
The following is an example of my process':
Rags were first boiled with enough water to cover them, to which had been added about 5% of ammonia. This operation removed the dirt and grease and also extracted a considerable amount of dye. The goods were then thoroughly rinsed and heated to between 120 and 140 F. with enough water thoroughly to cover them. Between and 1% of acid (such as sulphuric, acetic, or formic) was: added and thoroughly mixed in and then 5% of a mixture of 70% sodium formaldehyde sulphoxylate with 30% of anhydrous zinc sulphate was introduced, and the water was heated until a temperature of between 190 and 200 F. was reached} After the goods had been heated for some time in this bath the dyes were found to be destroyed; the liquor was discarded and the goods thoroughly rinsed.
For the purposes of, convenience, the sodium formaldehyde sulphoxylate and the zincv salt may be prepared in dry powdered form and mixed to ether in the proper proportions and store or sold mixed to ether. They are then immediately available or use in preparing an efiicient stripping bath.
What I claim is:
1. The process of stripping dyes from fibres which comprises the step of soaking such fibres in a heated bath comprising dissolved substances in equilibrium, such substances comprising sodium sulphoxylate formaldehyde and a soluble zinc salt on the one hand and soluble zinc sulphoxylate formaldehyde and a soluble sodium salt on the other hand.
2. The method of preparing a bath for stripping d es from fibres which comprises the steps of dissolving together sodium sulphoxylate formaldehyde and a soluble zinc salt whereby an equllibrium of soluble ingredients is obtained comprising sodium Sillphoxylate formaldehyde and zinc sulphoxylate formaldehyde.
3. A composition of matter adapted for use in the production of a bath for stripping dyes comprising sodium sulphoxylate formaldehyde and a substantial amount of a soluble zinc salt, mixed together in powdered form, and adapted when dissolved in water to form a bath comprising dissolved substances in equilibrium, such substances comprising sodium sulphoxylate formaldehyde and a soluble zinc salt on the one hand and soluble zinc sulphoxylate formaldehyde and a soluble sodium salt on the other hand.
4. A composition as specified in claim.3 in which the amount of soluble zinc salt ,is 10 about half of the amount of sodium formaldehyde sulphoxylate.
CHARLES S. HOLLANDER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US166272A US1696164A (en) | 1927-02-05 | 1927-02-05 | Use of sulphoxylates for stripping dyes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US166272A US1696164A (en) | 1927-02-05 | 1927-02-05 | Use of sulphoxylates for stripping dyes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1696164A true US1696164A (en) | 1928-12-18 |
Family
ID=22602561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US166272A Expired - Lifetime US1696164A (en) | 1927-02-05 | 1927-02-05 | Use of sulphoxylates for stripping dyes |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1696164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2685496A (en) * | 1951-05-22 | 1954-08-03 | Harris Res Lab Inc | Method for stripping color from keratinous material |
-
1927
- 1927-02-05 US US166272A patent/US1696164A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2685496A (en) * | 1951-05-22 | 1954-08-03 | Harris Res Lab Inc | Method for stripping color from keratinous material |
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