DE801345C - Process for greasing leather - Google Patents

Process for greasing leather

Info

Publication number
DE801345C
DE801345C DEP3062A DEP0003062A DE801345C DE 801345 C DE801345 C DE 801345C DE P3062 A DEP3062 A DE P3062A DE P0003062 A DEP0003062 A DE P0003062A DE 801345 C DE801345 C DE 801345C
Authority
DE
Germany
Prior art keywords
leather
water
greasing
greasing leather
substances
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
Application number
DEP3062A
Other languages
German (de)
Inventor
Eugen Dr Immendoerfer
Bruno V Dr Reibnitz
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEP3062A priority Critical patent/DE801345C/en
Application granted granted Critical
Publication of DE801345C publication Critical patent/DE801345C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C9/00Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • C14C9/02Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Description

Verfahren zum Fetten von Leder Zum Fetten von Leder in wiil.irigeni Bad (Lickern) werden vielfach natürliche Fettstoffe und Ole ver- wendet, die man, z. 13. durch Verseifung oder durch Sulfonierung und Neutralisieren rnit_@llcali,wasser- löslich gemacht hat. Man kann dabei auch wasser- unlöslicheFettstoffe mitverwenden.indem man dies entweder den wasserlöslich gemachten Fettstoffen nachträglich zusetzt oder die Verseifung der Fette und ble bzw. ihre Sulfonierung und Neutralisation nur zu einem Teil durchführt. Datik der Eintilgier- wirkung der verseiften bzw. der neutralisierte Sulfonsäuregruppen enthaltenden Anteile dringen die wassertinlösliclieii Fettstotie mehr oder weniger tief in das feuchte Leder ein und verleihe» ihm gute wasserabweisende Eigenschaften. Es wurde nun gefunden, daß sich die kückst<inde aus der Destillation von Fettsäuren, die durch Oxy- dation höhermolekularer alipliatischer oder cvc@ol- aliphatischer Kohlenwasserstotie gewonnen sind, ausgezeiclinct für die Erzeugung von '.Mitteln zum Fetten von Leder in wäßrigein Bad eignen. Sie werden . zu diesem Zweck ganz oder teilweise mit alkalischen Stoffen neutralisiert. Man kann ihnen auch noch wasserlösliche oder wasserunlösliche l,-ettstofe zusetzen. Die zu verwetideiidcii Destilla- tionsriickst<inde bilden eine halbfeste 'lasse, deren Tropfpunkt je nach der Gewinnungsart zwischen 43 und 70' liegt. Sie enthalten neben freien Fettsäuren deren Ester, Lactone und Estolide sowie wesentliche 1Uengen unverseifbarer Anteile; der Gehalt hieran beträgt im allgemeinen 20 bis 30 °/o.Process for greasing leather For greasing leather in wiil.irigeni bath (Lickern) natural fats and oils are often used applies, which one, z. 13. by saponification or by Sulfonation and neutralization with @ llcali, water- has made it soluble. You can also use water also use insoluble fatty substances by doing this either the water-solubilized fatty substances subsequently added or the saponification of the fats and ble or their sulfonation and neutralization only partially carries out. Datik der Einstelgier- effect of the saponified or the neutralized Fractions containing sulfonic acid groups penetrate the water-soluble fatty substance more or less go deep into the damp leather and give it good water repellent properties. It has now been found that the cheeky ones are from the distillation of fatty acids produced by oxy- dation of higher molecular weight aliphatic or cvc @ ol- obtained from aliphatic hydrocarbons, excellent for the production of funds for Greasing leather in an aqueous bath is suitable. she will . for this purpose in whole or in part neutralized alkaline substances. You can them also water-soluble or water-insoluble Add l, fatty substances. The to Verwetideiidcii Destilla- tion backsticks form a semi-solid leave, their The dropping point is between 43 and 70 'depending on the type of extraction. In addition to free fatty acids, they contain their esters, lactones and estolides as well as substantial amounts of unsaponifiable parts; the content thereof is generally from 20 to 30%.

Zurn Neutralisieren der Rückstände dienen vorzugsweise alkalimetallhydroxvde, aber auch Amnioniak oder :Itnine, auch Alkylolamine können verwendet werden. Die emulgierende Wirkung der 111 den fertigen lllitteln vorhandenen Salze kann durch "Zugabe von anderen oberflächenwirksamen Stoffen, z. B. Seifen, Türkischrotöl, höhermolekularen Polyglykoläthern u. dgl., unterstützt werden. Auch Carbonsäuren oder Phenole können zugegeben werden. Beispiel 1 ioo (;ewiclitsteile eines Destillationsrückstandes, der bei der Gewinnung von Fettsäuren durch Oxydation von Braunkohlenparaffin (Schmelzpunkt 52°) mitLuft in üblicherweise gewonnen wurde (Säurezahl 73, Verseifungszahl 128, Tropfpunkt 55°), werden mit 28 Gewichtsteilen 20 Niger Natronlauge bei 6o`' innig verrührt. -Man erhält eine pastenartige blasse, die sich in Wasser unter Bildung einer beständigen Emulsion leicht löst und sich gut zum Fetten von chromgegerbtem Leder eignet. Beispiel e ioo Gewichtsteile eines Rückstandes der Destillation von Fettsäuren, die durch Oxydation eines Paraffins aus der Kohlenoxydhydrierung (Schmelzpunkt 32°) gewonnen wurden (Säurezahl 78), werden mit 2o Gewichtsteilen eines zwischen 230 und 330° siedenden Mittelöls verschmolzen und hierauf mit --oo/oiger Natronlauge neutralisiert. Man erhält ein in Wasser kolloidal lösliches Erzeugnis, das zum Fetten von mineralgarem Leder dienen kann. Das Leder erhält dadurch einen vollen Griff und ist gut wasserabweisend.Alkaline metal hydroxides are preferably used to neutralize the residues, but amnionia or: itnines, alkylolamines can also be used. The emulsifying effect of the salts present in the finished products can be supported by adding other surface-active substances, e.g. soaps, Turkish red oil, higher molecular weight polyglycol ethers and the like. Carboxylic acids or phenols can also be added. Ewiclit parts of a distillation residue, which was usually obtained in the production of fatty acids by oxidation of lignite paraffin (melting point 52 °) with air (acid number 73, saponification number 128, dropping point 55 °), are intimately stirred with 28 parts by weight of 20 niger sodium hydroxide solution at 6o`` '. -The result is a pasty pale that easily dissolves in water to form a permanent emulsion and is well suited for greasing chrome-tanned leather °) were obtained (acid number 78) are with 2o parts by weight n of a middle oil boiling between 230 and 330 ° and then neutralized with --oo / o sodium hydroxide solution. A product is obtained which is colloidally soluble in water and which can be used for greasing leather with a low mineral content. This gives the leather a full grip and is good water-repellent.

Claims (1)

PATE-, TA \SPRL'Cfl: Verfahren zum Fetten von Leder in wäB-rigem Bad mittels ganz oder teilweise neutralisierter, saure Gruppen enthaltender Fettstoffe, dadurch gekennzeichnet, daß man als solche die mit alkalisch wirkenden Stoffen behandelten Rückstände aus der Destillation durch Oxydation höherniolekularer aliphatischer oder cycloaliphatischer Kohlenwasserstoffe gewonnener Fettsäuren verwendet.PATE-, TA \ SPRL'Cfl: Process for greasing leather in an aqueous bath by means of completely or partially neutralized fatty substances containing acidic groups, characterized in that the treated with alkaline substances as such Residues from the distillation by oxidation of higher molecular aliphatic or fatty acids obtained from cycloaliphatic hydrocarbons.
DEP3062A 1948-10-02 1948-10-02 Process for greasing leather Expired DE801345C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP3062A DE801345C (en) 1948-10-02 1948-10-02 Process for greasing leather

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP3062A DE801345C (en) 1948-10-02 1948-10-02 Process for greasing leather

Publications (1)

Publication Number Publication Date
DE801345C true DE801345C (en) 1951-01-04

Family

ID=7358430

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP3062A Expired DE801345C (en) 1948-10-02 1948-10-02 Process for greasing leather

Country Status (1)

Country Link
DE (1) DE801345C (en)

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