WO1992013973A1 - Sels d'esters d'acides gras de c8-22 triglycerines phosphates contenant des groupes hydroxyles, utiles comme agents de graissage de cuirs et de peaux - Google Patents

Sels d'esters d'acides gras de c8-22 triglycerines phosphates contenant des groupes hydroxyles, utiles comme agents de graissage de cuirs et de peaux Download PDF

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Publication number
WO1992013973A1
WO1992013973A1 PCT/EP1992/000181 EP9200181W WO9213973A1 WO 1992013973 A1 WO1992013973 A1 WO 1992013973A1 EP 9200181 W EP9200181 W EP 9200181W WO 9213973 A1 WO9213973 A1 WO 9213973A1
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WO
WIPO (PCT)
Prior art keywords
leather
phosphated
group
salts
glycerol tri
Prior art date
Application number
PCT/EP1992/000181
Other languages
German (de)
English (en)
Inventor
Hans-Herbert Friese
Uwe Ploog
Peter Hofer
Wolfgang Prinz
Original Assignee
Henkel Kommanditgesellschaft Auf Aktien
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 Henkel Kommanditgesellschaft Auf Aktien filed Critical Henkel Kommanditgesellschaft Auf Aktien
Publication of WO1992013973A1 publication Critical patent/WO1992013973A1/fr

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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
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring

Definitions

  • the invention relates to fatliquoring agents for leather and furs, a process for treating leather and the use of salts of phosphated OH group-containing glycerol tri-C8-22 _ fatty acid esters for the production of leather with favorable water behavior .
  • the hydrophobizing effect of the phosphoric acid esters is offset by their poor emulsifiability and their low emulsion resistance in aqueous treatment liquors with low pH values. Because of the low emulsion resistance, the greasing must therefore be carried out at pH values> 5. The through this However, the greasing achieved is not satisfactory: the leather has insufficient grip properties.
  • Combinations of the phosphoric acid esters with other fatliquoring agents result in an improved grip, but lead to a deterioration in the hydrophobizing effect.
  • the object on which the invention is based was therefore to develop a fatliquor for leather which, in treatment liquors with pH values below 5, has a high resistance to emulsions, penetrates well into the leather and gives it good grip and high grain resistance and gives very good hydrophobic properties after fixation.
  • the fatliquor to be developed should be easy to emulsify in water. It is also required that the fat to be developed cannot be removed from the leather with organic solvents.
  • the invention accordingly relates to a fatliquor for leather and furs, which contains alkali metal, Ain and / or ammonium salts of phosphated OH group-containing glycerol tri-C8-22 ⁇ fatty acid esters .
  • the preparation of the phosphated OH group-containing glycerol tri-C8-22 ⁇ ⁇ ettklaree is carried out in a conventional manner by OH-group-containing glycerol tri-C8-22 " ⁇ ettklareester ""t phosphorus pentoxide or polyphosphoric acid at temperatures between 50 and 110 ° C. be implemented ("Chemical technology", volume 7, page 123 ff, Carl-Hanser-Verlag, Kunststoff - Vienna 1986).
  • the phosphating agent is used in such amounts that 10 to 100%, preferably 30 to 100% of the OH groups are phosphated, ie the degree of phosphating is between 10 and 100%, preferably between 30 and 100%.
  • the mixture is neutralized with an alkali metal hydroxide solution, amines or ammonia, preferably with an alkali metal hydroxide solution.
  • Suitable OH group-containing glycerol-C8-22 "f ett Textreester s ⁇ n - castor oils and / or such OH-containing glycerol triesters C8-22 _, f ettklareester 'de from glycerol tri-C8-22 ⁇ ' fettklareestern with a high content of unsaturated C8-22 "- rettklareste ⁇ are producible, for example olive oil, linseed oil, soybean oil or sunflower oil.
  • the double bonds of these glycerol esters are epoxidized, for example, by the process described in DE-PS 857 364 by reaction with peracetic acid in the presence of acidic catalysts or with performic acid formed in situ from formic acid and hydrogen peroxide.
  • the oxirane rings formed are then split to form OH groups with hydrogen or protic compounds, such as water or aliphatic C 1 -C 8 alcohols. The conditions of the splitting are chosen so that the ester groups present remain intact.
  • Salts of phosphated castor oils are preferably used as lubricants for leather and furs.
  • Another subject matter of the invention is a process for the treatment of leather, which is characterized in that the leather, following the tanning, retanning or dyeing, with alkali metal, Ain and / or ammonium salts of phosphated OH group-containing glycerol tri-C8 -22 " " i? Ett yarnreester ⁇ greased and then the treatment liquor containing the fatty agent is adjusted to a pH between 3.6 and 4.8 with acids.
  • reesters are optionally used in a mixture with other fatliquoring agents before and / or after retanning and optionally coloring as a licker.
  • the temperatures during the fatliquoring are typically between 30 and 60 ° C.
  • Towards the end of the The pH of the treatment liquor is adjusted to 3.6 to 4.8, preferably 3.8 to 4.4, with acids, preferably with formic acid, acetic acid and / or sulfuric acid.
  • Phosphated OH group-containing glycerol tri fatty acid ester salts are used alone or in a mixture with other fatliquoring agents, for example mineral oils, paraffins and / or silicone oils, preferably in emulsified form, with polyvalent metal ions, soap-forming emulsifiers, such as partial esters of polyvalent carboxylic acids, alkenyl succinic acids salts thereof, sulfosuccinate salts, C8-22 "- f äuren fatty optionally sulfited or sulfated fats and / or oils and / or Chloralkan- and / or Alkansulfonatsalzen used phosphated OH-containing to prepare a hydrophobic leather glycerol tri-C8-22 ⁇ .
  • other fatliquoring agents for example mineral oils, paraffins and / or silicone oils, preferably in emulsified form, with polyvalent metal ions, soap-forming emulsifiers
  • fatty acid esters alone or in a mixture with mineral oils, paraffins and / or silicone oils, with polyvalent metal ions soap-forming emulsifiers, such as partial esters of polyvalent carboxylic acids, alkenylsuccinic acids and their salts,
  • the weight ratio of salts of phosphated OH group-containing glycerol-C8-22"' ⁇ externa ETTs' r eester with other oiling agents is preferably between 10 and 90, particularly preferably between 20 and 80.
  • the fatliquoring agents according to the invention, ie salts of phosphated OH group-containing glycerol tri-C8-22 "esters, alone or in a mixture with other fatliquoring agents, are based on the shaved weight of the leather - Used in quantities of preferably between 4 and 20% by weight, particularly preferably between 5 and 15% by weight.
  • C ettic acid ester salts does not increase the hydrophilicity of the leather.
  • a hydrophobization of the leather is possible in that, after greasing and adding acid to the treatment liquor, based on the shaved weight of the leather, preferably 1.0 to 6.0% by weight, particularly preferably 2.0 to 4.0% by weight, of one Chromium and / or aluminum tanning agent is added.
  • the formation of chromium and / or aluminum salts of phosphated OH group-containing glycerol tri-C8-22 fatty acid esters fixes them on and in the leather.
  • the treated leather has a favorable water behavior, which means that the passage of water through the leather cross section is significantly delayed under dynamic conditions and that only small amounts of water are absorbed in a certain time unit (penetrometer test according to DIN 53338).
  • the fatliquor to be used according to the invention has good emulsifying power and high emulsion resistance, especially in treatment liquors with pH values below 5.
  • All types of leather such as cowhide leather, pig leather or sheep leather, and furs can be treated with the fatliquor according to the invention.
  • the leathers treated with a fatliquor according to the invention are soft, have firm scars and are easy to color. In addition, the treated leathers are highly resistant to chemical cleaning. Examples
  • Syntan 45 min Sulfated fatliquor sulfated fatliquor phosphated castor oil according to production example 45 min. Formic acid 10 min. Formic acid 15 minutes later, the liquor was drained off, and leather was washed after washing.
  • the treated leather had a soft, comfortable grip and was well greased. 3.Cattle wet blue - fold thickness 1.8 m

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)

Abstract

Des sels d'esters d'acides gras de C8-22 triglycérinés phosphatés, contenant des groupes hydroxyles, sont utiles comme agents de graissage de cuirs et de peaux.
PCT/EP1992/000181 1991-02-06 1992-01-28 Sels d'esters d'acides gras de c8-22 triglycerines phosphates contenant des groupes hydroxyles, utiles comme agents de graissage de cuirs et de peaux WO1992013973A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914103456 DE4103456A1 (de) 1991-02-06 1991-02-06 Salze phosphatierter oh-gruppenhaltiger glycerintri-c(pfeil abwaerts)8(pfeil abwaerts)(pfeil abwaerts)-(pfeil abwaerts)2(pfeil abwaerts)2(pfeil abwaerts)-fettsaeureester als fettungsmittel fuer leder und pelze
DEP4103456.2 1991-02-06

Publications (1)

Publication Number Publication Date
WO1992013973A1 true WO1992013973A1 (fr) 1992-08-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/000181 WO1992013973A1 (fr) 1991-02-06 1992-01-28 Sels d'esters d'acides gras de c8-22 triglycerines phosphates contenant des groupes hydroxyles, utiles comme agents de graissage de cuirs et de peaux

Country Status (3)

Country Link
EP (1) EP0570399A1 (fr)
DE (1) DE4103456A1 (fr)
WO (1) WO1992013973A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035815A2 (fr) * 1995-05-12 1996-11-14 Stockhausen Gmbh & Co. Kg Procede d'impermeabilisation de cuirs sous de faibles valeurs de ph et cuirs ainsi impermeabilises
US5763371A (en) * 1994-07-29 1998-06-09 Witco Corporation Ethylene compressor lubricant containing phospate ester of a monoglyceride or diglyceride

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2005717A (en) * 1977-10-06 1979-04-25 Liquoring Process T Fat liquoring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2005717A (en) * 1977-10-06 1979-04-25 Liquoring Process T Fat liquoring

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5763371A (en) * 1994-07-29 1998-06-09 Witco Corporation Ethylene compressor lubricant containing phospate ester of a monoglyceride or diglyceride
WO1996035815A2 (fr) * 1995-05-12 1996-11-14 Stockhausen Gmbh & Co. Kg Procede d'impermeabilisation de cuirs sous de faibles valeurs de ph et cuirs ainsi impermeabilises
WO1996035815A3 (fr) * 1995-05-12 1996-12-12 Stockhausen Chem Fab Gmbh Procede d'impermeabilisation de cuirs sous de faibles valeurs de ph et cuirs ainsi impermeabilises

Also Published As

Publication number Publication date
EP0570399A1 (fr) 1993-11-24
DE4103456A1 (de) 1992-08-13

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