US1794920A - Method of moistening and wetting out leather and dried hides - Google Patents
Method of moistening and wetting out leather and dried hides Download PDFInfo
- Publication number
- US1794920A US1794920A US215763A US21576327A US1794920A US 1794920 A US1794920 A US 1794920A US 215763 A US215763 A US 215763A US 21576327 A US21576327 A US 21576327A US 1794920 A US1794920 A US 1794920A
- Authority
- US
- United States
- Prior art keywords
- leather
- hides
- moistening
- dried
- wetting out
- 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
- 239000010985 leather Substances 0.000 title description 28
- 238000000034 method Methods 0.000 title description 8
- 238000009736 wetting Methods 0.000 title description 6
- 239000002253 acid Substances 0.000 description 13
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 12
- 150000007513 acids Chemical class 0.000 description 11
- 239000000126 substance Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 150000001298 alcohols Chemical class 0.000 description 5
- 125000001931 aliphatic group Chemical group 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- -1 propyl alcohols Chemical class 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000009963 fulling Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- OUNFHIFSLHEIPK-UHFFFAOYSA-N 2-chloronaphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=C(Cl)C=CC2=C1 OUNFHIFSLHEIPK-UHFFFAOYSA-N 0.000 description 1
- 241000193738 Bacillus anthracis Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- ILFFFKFZHRGICY-UHFFFAOYSA-N anthracene-1-sulfonic acid Chemical class C1=CC=C2C=C3C(S(=O)(=O)O)=CC=CC3=CC2=C1 ILFFFKFZHRGICY-UHFFFAOYSA-N 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/04—Soaking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S516/00—Colloid systems and wetting agents; subcombinations thereof; processes of
- Y10S516/01—Wetting, emulsifying, dispersing, or stabilizing agents
- Y10S516/03—Organic sulfoxy compound containing
Definitions
- sulphonic acids of compounds which are obtained by condensing naphthalene or the ring substitution products of naphthalene in the presence of condensation and oxidation-agents with alcohols of the aliphatic series, containing more than two carbon atoms. These products are probably sulphonic acids of alkylated aromatic compounds of the naphthalene series. It is also possible to use the salts of such compounds.
- Gther compounds which can be used for producing products of the above named kind are: other poly-nuclear hydrocarbons or sulpho-acids of such hydrocarbons, as for instance, phenanthrene or anthracene-sulphonic acids, and also substitution products such as chloro-naphthalenesulphonic acid, naphthol-sulphonic acids and the like.
- the corresponding olefines and, in general, aliphatic and cyclic olefines, as for instance, tetra-hydrobenzol may be employed.
- the same method may be employed for moistening dried hides. When such hides are soaked for a longer time, especially during hot seasons, skin substance is lost on account of septics in the water or in the hide. n
- Alkalies are often employed to accelerate the moistening, but also alkalies may damage the hides by removing skin substance and swelling the hides. According to this invention, however, these drawbacks are avoided by employing the substances named above.
- Example 1 100 kg. of dried hides are placed in a pit containing about 250 liters of water and 0.5 kg. of a product obtained by condensing naphthalene or its ring substitution products'in the presence of condensationand oxidation-agents with alcohols of the aliphatic series, which contain more than two carbon atoms. After 24 hours the hides are wetted out through and through, so that they can be transferred directly to the lime it. p The said substances will further disinfect the hides under treatment and, for instance, destroy anthrax bacilli.
- Example 2 kg. of'dried leather are brought into a vat containing 200 to 250 liters of water and 0.5 kg. of one of the above named substances. It is hereby only necessary to move the Vat intermittently, for instance, for half an hour every two hours. After 24 hours the leather is thoroughly moistened and may be subjected to any treatment, such as dyeing, greasing, and the like, in aqueous fluids.
- Example 5 In order to wet dry, cured, kid or alumed leather after the tanning for further treatment of the same, such leather is treated in a fulling mill or in a fulling vat containing water. To this bath 0.5 kg. of one of the above named substances is added to each 100 kg. of dried leather. The moistening will be completed during the course of two hours at most. Hereby the washing losses are very low and the addition of substances to compensate for such losses can be reduced to a minimum. The broached hides produced in this way can be easily dyed and will take up beautiful colors.
- a method of moistening and wetting out leather and hides which comprises subjecting leather and hides until thoroughly moistened to treatment with an aqueous solution of the sulphonic acids of compounds which may be obtained by condensing naphthalene in the presence of condensation and oxidation agents with alcohols of the aliphatic series containing more than two carbon atoms.
- a method of moistening and wetting out leather and hides which comprises subjecting leather and hides until thoroughly moistened to treatment with an aqueous solution of the suphonic acids of a compound which is obtained by condensing a ring substitution product of naphthalene in the presence of condensation and oxidation agents with an alcohol of the aliphatic series containing more than two carbon atoms.
- a method of nioistening and wetting out leather and hides which comprises subjecting leather and hides until thoroughly moistened to treatment with an aqueous solution of a sulphonic acid of an aromatic polynuclear hydrocarbon that isalkylated in the aromatic rin f
- a method of moistening and wetting out leather which comprises subjecting leather and hides until thoroughly moistened to treatment with an aqueous solution of the sulphonic acid of propylated naphthalene.
Description
Patented Mar. 3, i931 HES? AVAiLABLE COP;
Uttllttiit FATENT @FFEQEE FRIEDRICH POSPIEGH, 0E DRESDEN, GERMANY, ASSIGNOR 'IO CHEMISCHE FABRIK.
PO'IT 85 ('10., 0F DRESDEN, GER-MANY METHOD OF MOISTENING IiiNI) WETTING OUT LEATHER AND DRIED RIDES No Drawing. App1ication filed August 26, 1927, Serial No. 215,763, and in Germany August 30, 1926.
It is almost impossible to thoroughly wet out leather which has been dried and make the same moist and pliant. This is especially true in the case of chrome-leather. Acids will more or less eifect a de-tanning of the leather, which hardly can be remedied again. Also the grains and the color of the leather will suffer by the treatment with an acid. If alkalies are employed the leather will become over-neutralized, and will lose its soft leather-like feeling and acquire a metallic stiffness after being dried. Further, neither the treatment with acids nor the treatment with alkalies will make it possible to moisten chromeleather thoroughly. This may be observed for instance by treating the moistened leather with fats in which case the fatty matter Will remain on the surface of the hide and not penetrate into the interior of the same.
Also when tanned leather is subjected to a softening treatment portions of the same remain dry. If acids are applied the leather acquires a stiff unleather-like feeling; on the other hand alkalies effect a reddening of the color. Also, the soaking or moistening of alumed or kid leather is connected with great technical difficulties. Usually a so-called fulling-mill is employed, which comprises one or more hammers by means of which the leather is beaten, until it has become thoroughly soaked. Ammonia containing substances are frequently added. This method is however Very defective in technical respects, since too much of the tanning material (alum, flour) is removed from the leather and the leather is often damaged during the hammering.
According to the present invention the above named drawbacks are avoided by moistening or soaking the leather in the presence of wetting agents. As such agents aromatic sulphonic acids, or the salts of such acids, may be mentioned as very advantageous for the purpose.
Especially advantageous are sulphonic acids of compounds which are obtained by condensing naphthalene or the ring substitution products of naphthalene in the presence of condensation and oxidation-agents with alcohols of the aliphatic series, containing more than two carbon atoms. These products are probably sulphonic acids of alkylated aromatic compounds of the naphthalene series. It is also possible to use the salts of such compounds.
Compounds of the above mentioned kind are obtained for instance, by condensing naphthalene-monoor poly-sulphonic acids at approximately 100 C. in the presence of sulphuric acid with propyl alcohols, butyl alcohols, cyclo-hexanol or other higher alcohols. The surplus of sulphuric acid is removed from the condensation products in the usual way. Gther compounds, which can be used for producing products of the above named kind are: other poly-nuclear hydrocarbons or sulpho-acids of such hydrocarbons, as for instance, phenanthrene or anthracene-sulphonic acids, and also substitution products such as chloro-naphthalenesulphonic acid, naphthol-sulphonic acids and the like. Instead of the higher alcohols, the corresponding olefines and, in general, aliphatic and cyclic olefines, as for instance, tetra-hydrobenzol, may be employed.
The same method may be employed for moistening dried hides. When such hides are soaked for a longer time, especially during hot seasons, skin substance is lost on account of septics in the water or in the hide. n
Alkalies are often employed to accelerate the moistening, but also alkalies may damage the hides by removing skin substance and swelling the hides. According to this invention, however, these drawbacks are avoided by employing the substances named above.
Example 1.-100 kg. of dried hides are placed in a pit containing about 250 liters of water and 0.5 kg. of a product obtained by condensing naphthalene or its ring substitution products'in the presence of condensationand oxidation-agents with alcohols of the aliphatic series, which contain more than two carbon atoms. After 24 hours the hides are wetted out through and through, so that they can be transferred directly to the lime it. p The said substances will further disinfect the hides under treatment and, for instance, destroy anthrax bacilli.
Example 2. kg. of'dried leather are brought into a vat containing 200 to 250 liters of water and 0.5 kg. of one of the above named substances. It is hereby only necessary to move the Vat intermittently, for instance, for half an hour every two hours. After 24 hours the leather is thoroughly moistened and may be subjected to any treatment, such as dyeing, greasing, and the like, in aqueous fluids.
Example 5.In order to wet dry, cured, kid or alumed leather after the tanning for further treatment of the same, such leather is treated in a fulling mill or in a fulling vat containing water. To this bath 0.5 kg. of one of the above named substances is added to each 100 kg. of dried leather. The moistening will be completed during the course of two hours at most. Hereby the washing losses are very low and the addition of substances to compensate for such losses can be reduced to a minimum. The broached hides produced in this way can be easily dyed and will take up beautiful colors.
I claim:
1. A method of moistening and wetting out leather and hides, which comprises subjecting leather and hides until thoroughly moistened to treatment with an aqueous solution of the sulphonic acids of compounds which may be obtained by condensing naphthalene in the presence of condensation and oxidation agents with alcohols of the aliphatic series containing more than two carbon atoms.
2. A method of moistening and wetting out leather and hides, which comprises subjecting leather and hides until thoroughly moistened to treatment with an aqueous solution of the suphonic acids of a compound which is obtained by condensing a ring substitution product of naphthalene in the presence of condensation and oxidation agents with an alcohol of the aliphatic series containing more than two carbon atoms.
3. A method of nioistening and wetting out leather and hides, which comprises subjecting leather and hides until thoroughly moistened to treatment with an aqueous solution of a sulphonic acid of an aromatic polynuclear hydrocarbon that isalkylated in the aromatic rin f A method of moistening and wetting out leather, which comprises subjecting leather and hides until thoroughly moistened to treatment with an aqueous solution of the sulphonic acid of propylated naphthalene.
FRIEDRICH POSPIECH.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC38664A DE479927C (en) | 1926-08-30 | 1926-08-30 | Process for soaking and wetting leather and hides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1794920A true US1794920A (en) | 1931-03-03 |
Family
ID=89903687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US215763A Expired - Lifetime US1794920A (en) | 1926-08-30 | 1927-08-26 | Method of moistening and wetting out leather and dried hides |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1794920A (en) |
| DE (1) | DE479927C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2469787A (en) * | 1941-04-02 | 1949-05-10 | Riehs Carl | Process of soaking hides with a sulfonated phenol-formaldehyde condensation product |
| WO1996006953A1 (en) * | 1994-09-01 | 1996-03-07 | Commonwealth Scientific And Industrial Research Organisation | Pickling of hides and skins |
-
1926
- 1926-08-30 DE DEC38664A patent/DE479927C/en not_active Expired
-
1927
- 1927-08-26 US US215763A patent/US1794920A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2469787A (en) * | 1941-04-02 | 1949-05-10 | Riehs Carl | Process of soaking hides with a sulfonated phenol-formaldehyde condensation product |
| WO1996006953A1 (en) * | 1994-09-01 | 1996-03-07 | Commonwealth Scientific And Industrial Research Organisation | Pickling of hides and skins |
Also Published As
| Publication number | Publication date |
|---|---|
| DE479927C (en) | 1929-08-19 |
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