US1931355A - Process of treating furs - Google Patents
Process of treating furs Download PDFInfo
- Publication number
- US1931355A US1931355A US597645A US59764532A US1931355A US 1931355 A US1931355 A US 1931355A US 597645 A US597645 A US 597645A US 59764532 A US59764532 A US 59764532A US 1931355 A US1931355 A US 1931355A
- Authority
- US
- United States
- Prior art keywords
- acid
- treating
- hair
- furs
- straightening
- 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
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
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
Definitions
- the formic acid or acetic acid employed in the process should be usedin the technically water-free or anhydrous condition, and a dilute solution of the acid in acetic ether should not be used.
- formic as acid is used for example in the form of a saturated solution of the acid, containing not more than about 5% of water, in benzin'e containing about 1.4 per cent of formic acid; or aceticacid in the form of a20 per-cent solution in thesame solvent.
- the pure, water-free acids may also 'be used, but this, however easily leads to injury to the hide.
- the .process should be carried out either by immersing, the skins in question in-the solution, or the vapour of the 5 38 solution may be allowedto act upon the skins,
- the room, in which is situated the material to be treated it is preferable, to heat the room, in which is situated the material to be treated, to a temperature of about C.
- the hair recovers its former Persian lamb character when the new process. is carried out in a correctly controlled manner.
- the hairofskins which have a dead appearancedue particularly to bleaching regains its ori in l character.
- the hair is lustrous as itis calledin the art, and the opaque appearance of many over-bleached skins isagain replaced by the original optical character.
- Acetaldehyde is I still permissible in a concentration of per cent. but it also inhibits the efiect when the concentration is greater.
- hydrocarbons other than henzine such as benzene or the like. Completely.
- chloroform such as chloroform or carbon tetrachloride may also be used.
- the acid is in'solution in a hydrocarbon.
- the process for treating furs for extending or straightening the hair which includes treating the skins by immersion in a substantially anhydrous solution containing lower aliphatic acid.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Cosmetics (AREA)
Description
Patented Oct. 17, 1933 Q ,355 PROCESS OF TREATING FURS Alexander Nathansohn, Beriin-Wilmendorf, Germany at Drawing. Application Mas-c118, 1932, Serial No. 597,845, and in Germany March 17, 1931 The invention relates to a process of improving furs by extending or straightening the hair by treating the skin with formic acid, acetic acid. etc. 7 v
I It is true that it has previously been proposed in improving furs to use acetic acid or formic acid for enhancing the lustre, and acetic ether,
ie which it has been customary to add other substances, has also been employed for the 10 same purpose. This treatment, which was intended to impart to the pelt the so-called lustre had to be carried out, however, with dilute aqueous acids in order to attain the desired object. 7
In contradistinction thereto, in the process according to the invention; for the purpose of attaining a fundamentally diflerent object, namelythe straightening of the hair and more particularly the under-hair, the formic acid or acetic acid (i. e. lower saturated aliphatic acid) employed in the process should be usedin the technically water-free or anhydrous condition, and a dilute solution of the acid in acetic ether should not be used. On the contrary. formic, as acid is used for example in the form of a saturated solution of the acid, containing not more than about 5% of water, in benzin'e containing about 1.4 per cent of formic acid; or aceticacid in the form of a20 per-cent solution in thesame solvent. The pure, water-free acids may also 'be used, but this, however easily leads to injury to the hide. The .process should be carried out either by immersing, the skins in question in-the solution, or the vapour of the 5 38 solution may be allowedto act upon the skins,
if desired,- with slight heating. In the latter case, it is preferable, to heat the room, in which is situated the material to be treated, to a temperature of about C.
40 The *eiiect of the process diflers according to room temperature in a formic acid bath of the above-mentioned composition, and the desired eifectis-observable generally after only a quarter of an hour. A longer time, for example eight hours-or more, is required in-the acetic,
acid bath. 1: the vapour of the said liquids is used, the eflect, if it is to be durable; requires veral hours "at 40 C. as a rule. The length of time required for the effect is-not quite the. same, depending upon the type of pelt and its previous treatment, and must'be found by trial in each particular case. I
skins with curly hair, more particularly sheep skins, react to the process, irrespective of the f form in which it is employed, in the case of considerable intensity, by complete straightening of the hair, such that, for example, it ispossible to impart the character of a mufllon to a slink. Whether this last process is economical will depend upon' the fashion, that is to say,
has suflered by the dressing operation and above all by bleaching, the hair recovers its former Persian lamb character when the new process. is carried out in a correctly controlled manner. Inaddition, the hairofskins which have a dead appearancedue particularly to bleaching regains its ori in l character. The hair is lustrous as itis calledin the art, and the opaque appearance of many over-bleached skins isagain replaced by the original optical character. The
most important phenomenon of the new process,
however, is at all events the straightening of the hairin contradistinction to the mere production of lustre which was attained bythe processes known heretofore. I
ascomparedwiththeoldprocesshcwever g' there is a fundamental difference not only in ume of ethyl acetate (acetic ether) is added.'
the straightening within the stated time is much less-pronounced, and if 10 per cent. is added instead, there is no straightening at all. .If ethyl 119 acetate (acetic ether) is employed as solvent for formic acid, there is not evena trace of the characteristic eflect to be seen. Exactly the same inhibiting eflect as that exerted by ethyl acetate (acetic'ether) is'observed on using diethyl ether, ethyl alcohol andacetone. Here again, an addition of per cent. is tolerable,
but agreater addition is not. Acetaldehyde is I still permissible in a concentration of per cent. but it also inhibits the efiect when the concentration is greater.
As principal diluents for the acids, it is possible to employ hydrocarbons other than henzine, such as benzene or the like. Completely.
or partly chlorine-substituted hydrocarbons,
such as chloroform or carbon tetrachloride may also be used.
Water should not be used for dilution. but
I according to, what has been stated hereinbetore,
treating skins with substantially anhydrous lower aliphatic acid.
2. Process as in claim 1, in which the treating occurs with substantially anhydrous formic acid.
3. Process as in claim 1, in which the treating occurs with substantially anhydrous acetic acid.
the acid is in'solution in a hydrocarbon.
5. Process as in claim 1, characterized in that the acid is in solution in a chlorine-substituted hydrocarbon.
6. Process as in claim 1, in which the treating occurs in the presence of an oxygen-containing organic substance, in a concentration of up to 15 percent, for retarding the process.
7. The process for treating furs for extending or straightening the hair, which includes treating the skins by immersion in a substantially anhydrous solution containing lower aliphatic acid.
8. The process for treating furs Ior extending or straightening the hair, which includes treating the skins by exposure to the vapors of sub stantially anhydrous lower aliphatic acid.
ALEXANDER N ATHAVSOHN 4. Process as in claim 1, characterized in that
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1931355X | 1931-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1931355A true US1931355A (en) | 1933-10-17 |
Family
ID=7749971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US597645A Expired - Lifetime US1931355A (en) | 1931-03-17 | 1932-03-08 | Process of treating furs |
Country Status (1)
Country | Link |
---|---|
US (1) | US1931355A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2547060A (en) * | 1945-10-03 | 1951-04-03 | I S Anitil | Process for the treatment of rabbit's hair |
-
1932
- 1932-03-08 US US597645A patent/US1931355A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2547060A (en) * | 1945-10-03 | 1951-04-03 | I S Anitil | Process for the treatment of rabbit's hair |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE220349C (en) | ||
US1931355A (en) | Process of treating furs | |
GB484691A (en) | Improvements in or relating to methods of refining textiles | |
DE740472C (en) | Process for pickling ashed skin | |
DE2953579C2 (en) | Chrome tanning process | |
US2018660A (en) | Preservative process for cellulose materials | |
DE962427C (en) | Process for the dehydration and oxidation of animal fibers | |
US2309907A (en) | Method of treating furs | |
DE725984C (en) | Process for improving the resistance of threads or fibers made of proteins, especially casein, to hot watery baths | |
DE1009153B (en) | Process for making textiles water repellent | |
DE653306C (en) | Process for dyeing furs with oxidizing dye preparations | |
DE593573C (en) | Process for the pretreatment of animal hide skins ready for tanning | |
AT224257B (en) | Process for depilating hides and skins | |
DE640152C (en) | Process for refining tobacco products | |
DE767061C (en) | Process for pickling ashed skin | |
AT132687B (en) | Method for dressing skins. | |
DE1935501A1 (en) | Process for depilation of skins and fur | |
DE2629537C3 (en) | Process to increase the softness, suppleness and tear resistance of fur skins or leather by treatment in organic solvents | |
GB528459A (en) | Improvements in or relating to the treatment of furs or skins | |
EP0270767A1 (en) | Tanning process saving chrome | |
AT137535B (en) | Process for bleaching delicate fibers. | |
DE379979C (en) | Process for softening wood | |
SU35320A1 (en) | Method of tanning leather | |
DE446218C (en) | Process for dyeing fur, hair, feathers and the like like | |
DE703461C (en) | n and raw hides |