US1777832A - Treating of animal-skin products - Google Patents
Treating of animal-skin products Download PDFInfo
- Publication number
- US1777832A US1777832A US468122A US46812230A US1777832A US 1777832 A US1777832 A US 1777832A US 468122 A US468122 A US 468122A US 46812230 A US46812230 A US 46812230A US 1777832 A US1777832 A US 1777832A
- Authority
- US
- United States
- Prior art keywords
- slurry
- skin products
- tanned
- animal skin
- animal
- 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
- 239000002002 slurry Substances 0.000 description 31
- 239000000463 material Substances 0.000 description 24
- 241001465754 Metazoa Species 0.000 description 19
- 239000000835 fiber Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 229920000126 latex Polymers 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 10
- 239000004816 latex Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000012736 aqueous medium Substances 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 235000010755 mineral Nutrition 0.000 description 9
- 239000000725 suspension Substances 0.000 description 9
- 239000004519 grease Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 230000003472 neutralizing effect Effects 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 230000027455 binding Effects 0.000 description 5
- 238000009739 binding Methods 0.000 description 5
- 239000003755 preservative agent Substances 0.000 description 5
- 230000002335 preservative effect Effects 0.000 description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 235000013311 vegetables Nutrition 0.000 description 4
- 159000000011 group IA salts Chemical class 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000001648 tannin Substances 0.000 description 3
- 235000018553 tannin Nutrition 0.000 description 3
- 229920001864 tannin Polymers 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 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 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 240000002636 Manilkara bidentata Species 0.000 description 1
- 241000282341 Mustela putorius furo Species 0.000 description 1
- 240000003152 Rhus chinensis Species 0.000 description 1
- 235000014220 Rhus chinensis Nutrition 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000016302 balata Nutrition 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L89/00—Compositions of proteins; Compositions of derivatives thereof
- C08L89/04—Products derived from waste materials, e.g. horn, hoof or hair
- C08L89/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin, e.g. gelatin
Definitions
- This invention relates to a process of treating animal skin materials or animal skin products, as distinguished from the treatment of wool, hair, etc, and has for one of its objects the provision of a process adapted for utilizing scraps and cuttings from tanned hides, whereby such materials may be converted into a useful and valuable product which vin appearance, fibrous texture I and flexibility resembles natural leather.
- mate rial to be treated such as cuttings and scraps 3 from' chrome tannedleather for instance
- a neutralizing agent such for example, as an alkaline salt of a weak acid, neutrol for example, a composition two-thirds bicarbonate of soda and one-third sodium sulphate, borate of sodium, sodium hypo'sulfite, bicarbonate rial containing a water insoluble binder to.
- a synthetic latex or. other binding material containing a water insoluble binder and in suitable condition'for incorporation in the slurry may be substituted for the latices above mentioned.
- a vegetable tannage such as sumac is added to the slurry.
- the slurry is now deposited upon a suitable perforated support such as a wire gauze and the liquid of the slurry abstracted so that a sheet of fibers is obtained containing a water, insoluble binder.
- a suitable perforated support such as a wire gauze
- the material may then be rolled and pressed and subjected to the usual finishing operations employed in the finishing of natural leathers.
- the process which comprises treating mineral tanned animal skin products with a neutralizing agent, washing, effecting an intimate admixture of the material thus obtained and an aqueous medium until a flowing slurry with the tanned fibers of the animal skin products in suspension is obtained, adding a rease, sodium chloride, a water insoluble b nder and a preservative therefor, and abstracting the liquidfromthe slurry.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dermatology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
Patented Oia. 7, ,1930
UNITED s'rA- TEs PATIENT- OFF mromo rnnnn'r'rr, or. MILAN, ITALY, ilssrorron. zro socm'ra mvnnzrom nnnvn'r'rr ANONIMA TORINO, or 'runm, ITALY TREATING or ANIMAL-SKIN raonuo'rs Ho Drawing. Original application mea m 24, 1929, Serial No. 385,780, andin ma J'nly 14, ms.
' Divided and this application filed m 15, mo. Serial No. 468,122.
This invention relates to a process of treating animal skin materials or animal skin products, as distinguished from the treatment of wool, hair, etc, and has for one of its objects the provision of a process adapted for utilizing scraps and cuttings from tanned hides, whereby such materials may be converted into a useful and valuable product which vin appearance, fibrous texture I and flexibility resembles natural leather.
It will at once be apparent that my invention is of great economical value in that it salvages or'utilizes materials which heretofore have generally been converted into glues or fertilizers-or simply thrown away.
In .the' practice of my invention the mate rial to be treated, such as cuttings and scraps 3 from' chrome tannedleather for instance, is
first subjected to apreliminary neutralization if the acid has not yetbeen eliminated 'from the material, byv treatment with a neutralizing agent such for example, as an alkaline salt of a weak acid, neutrol for example, a composition two-thirds bicarbonate of soda and one-third sodium sulphate, borate of sodium, sodium hypo'sulfite, bicarbonate rial containing a water insoluble binder to.
of soda, either separately or combined, at a temperature between 309 and (1, for example. v I I v The material is then washed and mechanically and intimately admixed with water until a. slurry with the fibers of the material in suspension is obtained.- To this slurry I add a grease or oil'of-such I a. nature as to be'capable of emulsifying when added-to theslurr an example of a suitable reaseor oil-being chromine, this material 'ing added at a temperature between 30 and 609 order that the fibers of the i ultimatelymay be 'bondedor united toeach other I add a suitable. binding mate- 'the slurry,- the binding material being miscible with water prior to coagulation of the- ;binder; thisbinder may be indiarrubber latex, gutta like as'obtamed 'fromthe' trees and which rcha latex, ,balata'latex or the v may have been preserved by ammonia or any other suitable alkaline preserving material.
A synthetic latex or. other binding material containing a water insoluble binder and in suitable condition'for incorporation in the slurry may be substituted for the latices above mentioned.
As a preservative for the latex,-when latex is employed as a binder, a vegetable tannage such as sumac is added to the slurry.
The slurry is now deposited upon a suitable perforated support such as a wire gauze and the liquid of the slurry abstracted so that a sheet of fibers is obtained containing a water, insoluble binder. The material may then be rolled and pressed and subjected to the usual finishing operations employed in the finishing of natural leathers.
Inasmuch as the liquid of'the slurry is finally abstracted, as above pointed out, I may add .to the slurry a material such as commer- It will be understood that the amount of sodium chloride, or the like, employed will vary depending upon the material being treated and upon the separation'or abstracting of the liquid of the slurry that is desired.
Ifind that in the practice of my invention some care mustbe exercised so as not to a] such detrimentalcoagulation renders the final steps of the process as well asthepro'perties of the finished'product unsatisfactory.
'low coagulation of the biiider employed to When employing latex as a binding material I prefer to abstract the liquid of the slurry within an hour'of the addition of the bind ing materialr' This application is a'division of my copending application Serial No. 365,780, filed May 24,1929. y 4
What I claim is i 1. The process whieheoniprises treating mineral tanned animal skin products with a neutralizing agent, Washing, eflectin an intimate admixture of the material t us obtained and an aqueous medium until a flowing slurry with the tanned fibers of'the animal skin products in suspension is obtained, adding a grease and thereupon a water insoluble binder and a preservative therefor, and then abstracting the liquid from the slurry.
2. The process which comprises treating mineral tanned animal skin products with a neutralizing agent, washing, eflecting an intimate admixture of the material thus obtained and an aqueous medium until a flowing slurry with the tanned fibers of the animal skin products in suspension is obtained,
adding a grease, vegetable tannin and latex,
and abstracting the liquid of the slurry.
3. The process which comprises treating mineral tanned animal skin products with an alkaline salt of a weak acid, eifecting an intimate admixture of the material thus obtained and an aqueous medium until a flowing slurry with the tanned'fibers of the animal skin products in suspension is obtained, add-' ing a grease, a water insoluble binder and a preservative therefor, and then abstracting the liquid from the slurry.
4. The process which comprises treating mineral tanned animal'skin products with a composition bicarbonate of soda and sodium sulphate, washing, effecting an intimate admixture of the material thus obtained and an aqueous medium until a flowing slurry with the tanned fibers of the animal skin products in suspension is obtained, adding a grease, a vegetable tannin and latex, and abstracting the liquid of the slurry.
5. The process which comprises treating mineral tanned animal skin products with a neutralizing agent, washing, effecting an intimate admixture of the material thus obtained and an aqueous medium until a flowing slurry with the tanned fibers of the animal skin products in suspension is obtained, adding a rease, sodium chloride, a water insoluble b nder and a preservative therefor, and abstracting the liquidfromthe slurry.
6. The process which comprises treating mineral tanned animal skin products with a neutralizing agent, washing, effecting an intimate admixture-of the-material thus obtained and an aqueous medium until a flowing slurry with the tanned fibers of the animal skin products, in suspension is obtained,
adding a grease, vegetable tannin, latex and sodium chloride'to the slurry, and abstracting the liquid of the slurry.
7. The process which comprises treating mineral tanned animal skin products with an alkaline salt of a weak acid, effecting an intimate admixture of the material thus obtained and an aqueous medium until a flowing slurry with the tanned fibers of the aniadding chloride to the slurry, and abstractingthe liquid of the slurry. 1
9. The process which comprises treating mineral tanned animal skin products with a neutralizing agent at a temperature between 30 and 60 (3., washing, effecting an intimate admixture of the material thus obtained and an aqueous medium until a flowing slurry with the tanned fibers of the animal skin products in suspension is obtained, adding a grease, a water insoluble binder and a preservatlve for the binder, and then abstracting the liquid from the slurry.
10. The process which comprises treating mineral tanned animal skin products with a neutralizing agent, washing, effecting an in timate admixture of the material thus obtained and an aqueous medium until a flowing slurry with the tanned fibers of the animal skin products in suspension is obtained,
and 60 and thereupon a water insoluble binder and a preservative therefor, and then abstracting the liquid from the slurry.
This specificat on signed this 21st day of J ime, 1930.
ANTONTO FERRET'IL a (grease at a temperature between 50 Inn
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US468122A US1777832A (en) | 1929-05-24 | 1930-07-15 | Treating of animal-skin products |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US365780A US1777831A (en) | 1928-07-14 | 1929-05-24 | Treating of animal-skin products |
| US468122A US1777832A (en) | 1929-05-24 | 1930-07-15 | Treating of animal-skin products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1777832A true US1777832A (en) | 1930-10-07 |
Family
ID=27003079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US468122A Expired - Lifetime US1777832A (en) | 1929-05-24 | 1930-07-15 | Treating of animal-skin products |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1777832A (en) |
-
1930
- 1930-07-15 US US468122A patent/US1777832A/en not_active Expired - Lifetime
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