US1285144A - Process for tanning or impregnating hides. - Google Patents

Process for tanning or impregnating hides. Download PDF

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Publication number
US1285144A
US1285144A US7858116A US7858116A US1285144A US 1285144 A US1285144 A US 1285144A US 7858116 A US7858116 A US 7858116A US 7858116 A US7858116 A US 7858116A US 1285144 A US1285144 A US 1285144A
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US
United States
Prior art keywords
hides
tanning
molten mass
impregnating
water
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
Application number
US7858116A
Inventor
Kurt Haring
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CORPORATION OF ANHYDAT-LEDER-WERKE AG
CORP OF ANHYDAT LEDER WERKE AG
Original Assignee
CORP OF ANHYDAT LEDER WERKE AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CORP OF ANHYDAT LEDER WERKE AG filed Critical CORP OF ANHYDAT LEDER WERKE AG
Priority to US7858116A priority Critical patent/US1285144A/en
Application granted granted Critical
Publication of US1285144A publication Critical patent/US1285144A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/42—Paper being at least partly surrounded by the material on both sides

Definitions

  • My invention relates to improvements in tanning or impregnatingfi hidesmby means of viscous substances, especiallyibituminous substances as for lnstance natural or art1fi-.
  • the hides are dehydrated andwhen completely dry placed into a closed receptacle.
  • the air in this receptacle is then evacuated and the molten mass is introduced while a high vacuum is maintained continuously.
  • the zpresent invention is .salso :espeicially process described *in Unitedv StateslPatent 4N0: 1300,1416-datedflctober 3;l9l6gifor the Imanufacture of leather products :resembiting leather, issued to l/Verner Spalteholz and
  • the molten mass becomes enriched with benzene, or other liquid solvent as the case may be after each impregnation.
  • This benzene or other liquid solvent must be expelled from the molten mass by distillation with water vapors.
  • the new process does not only present the peculiar advantages of the known use of a vacuum in similar cases, but it allows in the first instance to dispense with the use of benzene and all other inflammable substances; besides the distillation with water vapors for'the elimination of the benzene is dispensed with and thereby the danger of injuring the hides by the remaining water is removed.
  • Theart of tanning hides comprising dehydrating the hides by means of a suitable substance having an attraction for Water and impregnating the hides with a molten as-' phaltic material under reduced pressure.
  • thispatent may be obtained for five cents each, by addressing the Goinmissioneroi Patents,

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Description

KURT r-razani onnnnsrnrm, nnssn imssau, GEBMANY,'ASSIGNOR r0 THE CORPO- 'RATION. or ,ANI-IYDAT-LEDER-WERKE AKTIENG-ESELLSCHAFT, or .HERSFELD,
sp ifi i mete tent. Patented Nov. '19; 1918.
. GERMANY. I
3' PROCESS "FOR TANNING 0R IWIPBEGBTATING IiIDES.
No Drawing.
: TozaZZ whom itymayiconcern:
Be it known that .LlinnrzHanmmcitizen of the GermanLEmire,rand. resident of I-Iersfeld,: HesseeNassau,Germany, with the Supost-xoifice address .Hainstrasse =14, haverinvented newxand useful *Improvements in Processes for Tanning or Impregnating Hides, of which the following is a specificavaluablewhen :used :in' connectionrwith the tion.
My invention relates to improvements in tanning or impregnatingfi hidesmby means of viscous substances, especiallyibituminous substances as for lnstance natural or art1fi-.
sembling leather, issued to Werner Spaltement with liquids that have an attraction for Water as for instance alcohol, acetone or their homologues.
I have found that it is impossible to impregnate hides with substances of a strong viscous nature by merely placing them in a molten mass.
Although it seems to be obvious, to raise the liquidity of the molten mass by raising the temperature, this could not be done as temperatures, that exceed 95100 G. are injurious to animal hides.
For this reason it was necessary to make use of the so called difiusion process, which consists in filling thehides first with a solution and then treating the same by a molten mass, the latter being soluble in the solvent used before.
Now it has been found, that this procedure may be dispensed with by the process, which forms the subject of the present application.
According to my invention the hides are dehydrated andwhen completely dry placed into a closed receptacle. The air in this receptacle is then evacuated and the molten mass is introduced while a high vacuum is maintained continuously. As soon as the myself. 1
holz and myself, that is to say by a treat- Applicationfiled February 16, 1916. .Serial lilo. 78,581.
.hides are completely covered by the :molten mass, the vacuum is stopped .it is preferred It); has beenfound, that. by this unanner the'liquid will; easily penetrate'into. the pores ofrthehides vand fill them completely.
r The zpresent invention is .salso :espeicially process described *in Unitedv StateslPatent 4N0: 1300,1416-datedflctober 3;l9l6gifor the Imanufacture of leather products :resembiting leather, issued to l/Verner Spalteholz and When hides are impregnated according to said process, the molten mass becomes enriched with benzene, or other liquid solvent as the case may be after each impregnation. This benzene or other liquid solvent must be expelled from the molten mass by distillation with water vapors. However it is unavoidable, that after the distillation more or less water will remain in the molten mass; this water however is ofvery injurious influence to the hides in somecases.
If on the contrary the hides, which are previously wholly dehydrated by a treatment with alcohol, acetone or their homologues, are impregnated with the molten mass by means of a vacuum and under following pressure, a reliable and complete impregnation is obtained. This is due to the known fact, that the previous dehydration makes the hides considerably more resistant against elevated temperatures.
It is to be remarked, that'without special precaution it is not possible to impregnate hides with this molten mass under pressure, as it would be necessary to use temperatures, that would injure the hides under normal conditions.
Therefore the new process does not only present the peculiar advantages of the known use of a vacuum in similar cases, but it allows in the first instance to dispense with the use of benzene and all other inflammable substances; besides the distillation with water vapors for'the elimination of the benzene is dispensed with and thereby the danger of injuring the hides by the remaining water is removed.
When I speak of alcohols I mean also to inclndeketones and when I speak of hide I mean to include both hide and skin in the untanned state and leather.
Now what I claim and desire to secure by Letters Patent is the following:
1. The art of tanning hides comprising reducing the atmospheric pressure on the hides and then treating the hides While under reduced pressure with a molten asphalt-i0 material, substantially as described.
2..Tl1e art of tanning hides comprising reducing the atmospheric pressure on the hides, treating the hides While under the reduced pressure with a molten asphaltic material and then subjecting said hides to a pressure exceeding atmospheric pressure.
8.The art of tanning hides comprising dehydrating hides by means of a substance having an attraction for Water and impregnating the hides with filling substances While under a reducedpressure.
4. Theart of tanning hides comprising dehydrating the hides by means of a suitable substance having an attraction for Water and impregnating the hides with a molten as-' phaltic material under reduced pressure.
5. The art of tanning hides comprising dehydrating the hides by means of an alco- That I claim the foregoing as my invention, I have signed my name in presence of two Witnesses, this 26th day of January, 1916. 7
near HARIEG.
Witnesses dean Game, 6 GRUND.
copies of. thispatent may be obtained for five cents each, by addressing the Goinmissioneroi Patents,
Washington, t3.
US7858116A 1916-02-16 1916-02-16 Process for tanning or impregnating hides. Expired - Lifetime US1285144A (en)

Priority Applications (1)

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US7858116A US1285144A (en) 1916-02-16 1916-02-16 Process for tanning or impregnating hides.

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US7858116A US1285144A (en) 1916-02-16 1916-02-16 Process for tanning or impregnating hides.

Publications (1)

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US1285144A true US1285144A (en) 1918-11-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721145A (en) * 1952-02-23 1955-10-18 Nicholas D Cheronis Deposition of polymers into leather

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721145A (en) * 1952-02-23 1955-10-18 Nicholas D Cheronis Deposition of polymers into leather

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