US1435876A - Process for unhairing skins and hides - Google Patents
Process for unhairing skins and hides Download PDFInfo
- Publication number
- US1435876A US1435876A US405188A US40518820A US1435876A US 1435876 A US1435876 A US 1435876A US 405188 A US405188 A US 405188A US 40518820 A US40518820 A US 40518820A US 1435876 A US1435876 A US 1435876A
- Authority
- US
- United States
- Prior art keywords
- hides
- bath
- depilatory
- skins
- substance
- 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
- 238000000034 method Methods 0.000 title description 14
- 239000000126 substance Substances 0.000 description 13
- 230000002951 depilatory effect Effects 0.000 description 11
- 230000002500 effect on skin Effects 0.000 description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 6
- 235000011941 Tilia x europaea Nutrition 0.000 description 6
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 6
- 229910001863 barium hydroxide Inorganic materials 0.000 description 6
- 239000004571 lime Substances 0.000 description 6
- 210000004209 hair Anatomy 0.000 description 3
- 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
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 description 2
- 229910001866 strontium hydroxide Inorganic materials 0.000 description 2
- 230000035900 sweating Effects 0.000 description 2
- WHRZCXAVMTUTDD-UHFFFAOYSA-N 1h-furo[2,3-d]pyrimidin-2-one Chemical compound N1C(=O)N=C2OC=CC2=C1 WHRZCXAVMTUTDD-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 235000006173 Larrea tridentata Nutrition 0.000 description 1
- 244000073231 Larrea tridentata Species 0.000 description 1
- 241000863032 Trieres Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229960002126 creosote Drugs 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000037336 dry skin Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 241000894007 species Species 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C14C1/06—Facilitating unhairing, e.g. by painting, by liming
Definitions
- the tanning of animal hides being accompanied by the absorption of tanning matter
- the loss of ing the preparation loss in dermal less. for the the dermal substance occurs durof hides and skins for the tanning process and particularly during the unhairing process.
- the sweating of hides provokes a slackening of the roots of the bristles and hair by putrefaction which also attacks and albuminoids within the skin.
- Sulphide of sodium destroys bristles and hair and damages the hides themselves.
- a depilatory bath extracts the albumens dissolved in the skin only up to a point where a certain balance between bumen in the bath and the solution of althat in the skin is attained. Therefore the depilatory bath should, if possible, be enriched with dermal substance and at the same time the latter must be prevents d from putrefying. If pos- Serial "No. 405,186.
- A. chemical fulfilling these requirements is barium hydroxide or strontium hydroxide. Where a lime bath which has not a sufiicient disinfecting power is used, a disinfectant suitable for that purpose, for example, creosote. should be added. It is not possible to say whether the use of such a lime bath has any later deleterious effect. A. barium hydroxide bath enriched with dermal substance has been tried and gives excellent results. i
- the enrichment of the bath with dermal matter may be cheaply effected by the addition of parings of hides, decay of skins, ears, muzzles, etc, in the freshly prepared depilatory.
- a barium hydroxide or strontium hydroxide depilatory after having been used for unhairing hides for a sufiicient time to be saturated with dermal matter may also be used. Up to the present time those experimenting with barium hydroxide as depilatory did not wait till the point just mentioned was attained. but emptied and renewed the bath as usual from time to time. This explains the unsatisfactory results obtained hitherto with barium hydroxide as a depilatory.
- albumen or albuminous matter tolime or caustic alkali as depilatory.
- a lime depilatory containing albumen very soon becomes putrid and causticialkali very soon decomposes albumen, hence it is not possible by these methods to realize the purpose of enriching a depilatory for a certain period with albuminous substance.
- the hairs bristles and paring of the hides after treatment according to my process are of the very best quality.
- the process can be used for any sort of skin, hide or leather.
- a process for unhairing skins or hides which process consists in dissolving barium hydroxide in Water, adding to the solution hide substance until no more Will dissolve I thereimsOeking the skin or "hide to be treated 10 in the liquid and finally removing the heir
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Cosmetics (AREA)
Description
Patented Nov.
pair
No Drawing.
(GRANTED UNDER THE PROVISIONS OF El-IE ACT OF MARSH 3,
'WILLIAIVL EAU'TENSTBAUGl-I, 01 THIEB, GERMANY.
PROCESS UNHAIBING SKINS AND RIDES.
Application filed August 21, 1920.
T all w 710m it may concern:
Be it known STRAUCH, merchant, residing at Trier, many, have invented Improvements in Processes for that I, lViLLniu RAUTEN- Gercertain new and useful Unhairing Skins and Hides (for which I filed an appl-ication for patent in Germany on Ma 9,
1919), of which the following is a speci cation.
The tanning of animal hides being accompanied by the absorption of tanning matter,
ning process and exceeding the weight of the unhaired dry skin by the amount of absorbed tan would occur.
Nevertheless by the methods usually employed a corresponding increase of weight is never obtained and this can only be explained by a matter compensating more or weight of the tanning substance fixed by skin.
The loss of ing the preparation loss in dermal less. for the the dermal substance occurs durof hides and skins for the tanning process and particularly during the unhairing process.
by the sweating hides with a lime This is mostly done process or by treating the bath or sulphide of sodium.
The sweating of hides provokes a slackening of the roots of the bristles and hair by putrefaction which also attacks and albuminoids within the skin.
destroys the This results in a double loss in that the albuminous substances, as well a been fixed to them. are lost.
s the tan which would have Solutions of lime dissolve albumens and extract the socalled intercellular substance from the hides.
The dissolved substances very soon become putrid and also contaminate the hides themselves, so that the lime bath must be thrown away and renewed from time to time.
Sulphide of sodium destroys bristles and hair and damages the hides themselves.
Careful investigations have proved. that a depilatory bath extracts the albumens dissolved in the skin only up to a point where a certain balance between bumen in the bath and the solution of althat in the skin is attained. Therefore the depilatory bath should, if possible, be enriched with dermal substance and at the same time the latter must be prevents d from putrefying. If pos- Serial "No. 405,186.
1921, 41 STAT. L, 1313.)
sible such a depilatory should be chosen as will prevent putrefaction.
A. chemical fulfilling these requirements is barium hydroxide or strontium hydroxide. Where a lime bath which has not a sufiicient disinfecting power is used, a disinfectant suitable for that purpose, for example, creosote. should be added. It is not possible to say whether the use of such a lime bath has any later deleterious effect. A. barium hydroxide bath enriched with dermal substance has been tried and gives excellent results. i
Careful observations on practical work in tanyards made during several years proved the fact that. in a depilatory barium bath enriched up to a certain pointiwith dermal substance protected from becoming putrid. the hides do not lose any dermal substance.
It has even been observed recently that socalled empty hides absorbed albuminous substance from a bath containing a large amount of the latter, thus improving their quality.
The enrichment of the bath with dermal matter may be cheaply effected by the addition of parings of hides, decay of skins, ears, muzzles, etc, in the freshly prepared depilatory.
A barium hydroxide or strontium hydroxide depilatory after having been used for unhairing hides for a sufiicient time to be saturated with dermal matter may also be used. Up to the present time those experimenting with barium hydroxide as depilatory did not wait till the point just mentioned was attained. but emptied and renewed the bath as usual from time to time. This explains the unsatisfactory results obtained hitherto with barium hydroxide as a depilatory.
It has already been suggested 'to add albumen or albuminous matter tolime or caustic alkali as depilatory. but a lime depilatory containing albumen very soon becomes putrid and causticialkali very soon decomposes albumen, hence it is not possible by these methods to realize the purpose of enriching a depilatory for a certain period with albuminous substance.
The hairs bristles and paring of the hides after treatment according to my process are of the very best quality.
The process can be used for any sort of skin, hide or leather.
Special apparatus for cerrying out the process are not required;
Claim.
A process for unhairing skins or hides, which process consists in dissolving barium hydroxide in Water, adding to the solution hide substance until no more Will dissolve I thereimsOeking the skin or "hide to be treated 10 in the liquid and finally removing the heir
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1919341276D DE341276C (en) | 1919-05-10 | 1919-05-10 | Method for shearing skins and pelts |
FR520532A FR520532A (en) | 1919-05-10 | 1920-07-10 | Process for peeling the skins |
GB23019/20A GB160435A (en) | 1919-05-10 | 1920-08-04 | Process for unhairing skins and hides |
US405188A US1435876A (en) | 1919-05-10 | 1920-08-21 | Process for unhairing skins and hides |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE341276T | 1919-05-10 | ||
US405188A US1435876A (en) | 1919-05-10 | 1920-08-21 | Process for unhairing skins and hides |
Publications (1)
Publication Number | Publication Date |
---|---|
US1435876A true US1435876A (en) | 1922-11-14 |
Family
ID=89574606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US405188A Expired - Lifetime US1435876A (en) | 1919-05-10 | 1920-08-21 | Process for unhairing skins and hides |
Country Status (4)
Country | Link |
---|---|
US (1) | US1435876A (en) |
DE (1) | DE341276C (en) |
FR (1) | FR520532A (en) |
GB (1) | GB160435A (en) |
-
1919
- 1919-05-10 DE DE1919341276D patent/DE341276C/en not_active Expired
-
1920
- 1920-07-10 FR FR520532A patent/FR520532A/en not_active Expired
- 1920-08-04 GB GB23019/20A patent/GB160435A/en not_active Expired
- 1920-08-21 US US405188A patent/US1435876A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR520532A (en) | 1921-06-27 |
DE341276C (en) | 1921-09-26 |
GB160435A (en) | 1921-11-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1435876A (en) | Process for unhairing skins and hides | |
ZA875673B (en) | ||
US3912448A (en) | Process of fellmongering animal skins with a depilatory composition | |
US1763319A (en) | Unhairing agent | |
US602476A (en) | John w | |
SU146429A1 (en) | The method of processing leather and fur raw materials | |
US254962A (en) | Tanning | |
US2965435A (en) | Process for dehairing of skins with ultrasonic energy | |
US1789629A (en) | Method of tanning sole leather | |
US1605988A (en) | Process of removing hair from hides or skins | |
US3114589A (en) | Rapid tanning sole leather using polyoxysaccharide bisulfites | |
US281287A (en) | Jules louis moeet | |
US2254713A (en) | Fat-liquoring of tanned hides and skins | |
US1338531A (en) | Treating of shark-skins and the like preparatory to tanning | |
SU1406172A1 (en) | Method of treating cattle hides | |
US1974889A (en) | Preparation of hides or skins for tanning | |
US3347751A (en) | Borohydride and bating treatment of hides | |
US379021A (en) | Thomas p | |
US1957020A (en) | Process for treating hides | |
US1765199A (en) | Process for depilating hides and skins | |
SU745953A1 (en) | Method of hide preservation | |
AT242283B (en) | Process for depilating hides and skins | |
US1683442A (en) | Process for preparing depilatory substances | |
SU141575A1 (en) | Method of preserving leather raw materials | |
KR890003962A (en) | Emulsion method of cuticle skin |