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 fatliquors based on sulfosuccinic acid monoamides and the use thereof for the hydrophobization of leather and furs and to a process for the hydrophobization of leather and furs.
• DE-OS 16 69 347 describes a process for greasing leather using sulfosuccinic acid esters which are emulsifiable in water, but no leather waterproofing effects are achieved.
• the invention therefore relates to fatliquors based on sulfosuccinic acid monoamides for the hydrophobization of leather and furs.
• Preferred fatliquoring agents contain sulfosuccinic acid monoamides in the form of their alkali and / or ammonium salts.
• Salts of sulfosuccinic acid monoamides with one or two 12-24 C atoms containing, preferably with one or two 14-22 C atoms containing, straight and / or branched chain, saturated and / or unsaturated alkyl radicals in the amine components are particularly preferred.
• the sulfosuccinic acid monoamides are prepared in a manner known per se by reacting equimolar amounts of maleic anhydride and the corresponding primary and / or secondary alkylamines at about 50 to 65 ° C. Following a post-reaction time at about 90 to 100 ° C., which is dependent on the amounts used, the reaction mixture is mixed with a maleic anhydride to an approximately equimolar amount of alkali metal and / or ammonium Hydrogen sulfites or alkali and / or ammonium sulfites reacted at about 80 to 100 ° C (see for example in Lindner: "Surfactants, Textile Aids, Washing Raw Materials", Vol. II, p. 755,ticianl.
• the primary and / or secondary alkylamines used have 12-14 carbon atoms, preferably 14-22 carbon atoms in the straight-chain and / or branched-chain, saturated and / or unsaturated alkyl radicals. Tallow and / or behenylamine, for example, are preferably used.
• the fatliquoring agents according to the invention can contain sulfosuccinic acid monoamides as the only component.
• the fatliquoring agents according to the invention preferably contain, as further components, known hydrophobizing and / or impregnating fatliquoring agents and / or neutral oils.
• Suitable hydrophobicizing and / or impregnating lubricants are, for example, oxidized and / or sulfoxidized C 16-30 hydrocarbons and / or C 32-40 waxes, alkyl phosphates with 12 to 24 C atoms in straight and / or branched, saturated and / or unsaturated alkyl radical, polycarboxylic acid partial esters, for example citric acid partial alkyl esters with 16-24 C atoms in the straight and / or branched chain, saturated and / or unsaturated esterification components and / or partial esters of polyalcohols, for example sorbitan, glycerol and / or pentaerythritol fatty acid esters with 12 to 24 C. -Atoms in the straight and / or branched chain, saturated and / or unsaturated alkyl chains of the fatty acid component.
• Animal oils and / or vegetable fats and oils such as claw oil, fish oil, tallow, soybean oil, sunflower oil, palm oil and / or coconut oil, chlorinated and / or non-chlorinated fatty acid methyl esters, for example, are particularly suitable as neutral oils which are contained in fatliquoring agents based on sulfosuccinic acid monoamides chlorinated tallow fatty acid methyl ester, long-chain hydrocarbons and / or chlorinated paraffins.
• fatliquors based on sulfosuccinic acid monoamides can also contain fatty substances and mixtures thereof produced by sulfating, sulfonating, sulfitating, sulfochlorinating or phosphatizing fats and / or oils.
• the proportion of these fatty substances in fat-releasing agents containing sulfosuccinic acid monoamide can be up to about 40% by weight, based on the active substance.
• the proportion of sulfosuccinic acid monoamides containing one or two 12 to 24 carbon atoms, preferably 14 to 22 carbon atoms containing straight and / or branched chain, saturated and / or unsaturated alkyl radicals in the amine components between about 10 and about 60 percent by weight, preferably between about 20 and about 50 percent by weight, based in each case on the active substance.
• the fatliquoring agents according to the invention are present, for example, in the form of pastes, aqueous emulsions or microemulsions.
• leather and furs are treated in particular with fatliquoring agents in the form of their alkali and / or ammonium salts.
• salts of the sulfosuccinic acid monoamides which contain one or two 12-24 C atoms, preferably one or two 14-22 C atoms, straight and / or branched chain, saturated and / or unsaturated alkyl chains in the amine components is special prefers.
• leather and furs can be greased with sulfosuccinic acid monoamides alone.
• a preferred embodiment is the treatment of leather and furs with fatliquoring agents which contain the sulfosuccinic acid monoamides according to the invention in combination with hydrophobizing and / or impregnating fatliquoring agents and / or neutral oils.
• Suitable hydrophobicizing and / or impregnating lubricants are, for example, oxidized and / or sulfoxidized C 16-30 hydrocarbons and / or C 32-40 waxes, alkyl phosphates with 12 to 24 C atoms in the straight and / or branched chain, saturated and / or unsaturated alkyl radicals, polycarboxylic acid partial esters, for example partial citric acid partial alkyl esters with 12 to 24 carbon atoms in the straight and / or branched, saturated and / or unsaturated saturated esterification components and / or partial esters of polyalcohols, for example sorbitan, glycerol and / or pentaerythritol fatty acid esters with 12 to 24 carbon atoms in the straight and / or branched chain, saturated and / or unsaturated fatty acid residues.
• polycarboxylic acid partial esters for example partial citric acid partial alkyl esters with 12 to 24 carbon
• Animal and / or vegetable fats and oils for example claw oil, fish oil, tallow, soybean oil, sunflower oil, palm oil and / or coconut oil, chlorinated and / or non-chlorinated fatty acid methyl esters, for example chlorinated tallow fatty acid methyl ester, and long-chain hydrocarbons are particularly suitable as neutral oil components in the fatliquoring agents of the process according to the invention and / or chlorinated paraffins.
• the fatliquoring agents of the process according to the invention can contain fat substances and mixtures thereof produced by sulfation, sulfonation, sulfitination, sulfochlorination or phosphatization of fats and / or oils.
• the proportion of these fatty substances in fatty acids containing sulfosuccinic acid monoamide can be up to about 40% by weight, based on the active substance.
• the proportion of sulfosuccinic acid monoamides is between about 10 and about 60 percent by weight, preferably between about 20 and about 50 percent by weight, in each case based on active substance.
• the lubricants suitable for the process according to the invention are present, for example, in the form of pastes, aqueous emulsions or microemulsions.
• colored leather and furs are optionally dipped in an aqueous liquor at about 35 to 70 ° C., preferably at about 40 to 55 ° C., with degreasing agents based on sulfosuccinic acid greased monoamides.
• degreasing agents based on sulfosuccinic acid greased monoamides.
• the pH of the liquor liquor is between about 4 and 8, preferably between about 4 and 6.
• the licker lubrication can be followed by a treatment with a polyacrylate tanning agent known per se, before a pH between about 3.8 and with acid, for example formic acids 4.2 is set. Thereafter, the fatliquoring agents based on sulfosuccinic acid monoamides are fixed in a known manner with polyvalent metal salts, in particular with aluminum, chromium, titanium and / or zirconium salts in aqueous form. The amounts of salts used are between about one and ten percent by weight based on the weight of the fold or skin.
• leather and furs can be treated with fatliquoring agents based on sulfosuccinic acid monoamides by adding all the fatliquoring constituents together to the liquor.
• fatliquoring agents based on sulfosuccinic acid monoamides
• a more or less pronounced water resistance is achieved.
• Fatting agents preferably used contain sulfosuccinic acid monoamides in the form of their alkali and / or ammonium salts.
• Fatting agents which contain salts of sulfosuccinic acid monoamides with one or two 12 to 24 C atoms, preferably with one or two 14 to 22 C atoms containing straight and / or branched chain, saturated and / or unsaturated alkyl radicals in the amine components are particularly preferred used.
• fatliquoring agents which contain sulfosuccinic acid monoamides as the only component can be used.
• fatliquoring agents are preferably used which, in addition to sulfosuccinic acid monoamides, contain hydrophobing and / or impregnating fatliquoring agents and / or neutral oils as further components.
• Suitable hydrophobicizing and / or impregnating lubricants are, for example, oxidized and / or sulfoxidized C 16-30 hydrocarbons and / or C 32-40 waxes, alkyl phosphates with 12 to 24 C atoms in the straight and / or branched chain, saturated and / or unsaturated alkyl radicals, polycarboxylic acid partial esters such as partial citric acid partial alkyl esters with 12 to 24 C atoms in the straight and / or branched chain, saturated and / or unsaturated esterification components and / or partial esters of polyalcohols, for example sorbitan, glycerol and / or pentaerythritol fatty acid esters with 12 to 24 C. -Atoms in the straight and / or branched chain, saturated and / or unsaturated fatty acid residues.
• Suitable neutral oils are in particular animal and / or vegetable fats and oils, for example claw oil, fish oil, tallow, soybean oil, sunflower oil, palm oil and / or coconut oil, chlorinated and / or non-chlorinated fatty acid methyl esters such as chlorinated tallow fatty acid methyl ester, long-chain hydrocarbons and / or chlorinated paraffins.
• the fatliquors to be used according to the invention may contain, as further constituents, fat substances and mixtures thereof produced by sulfation, sulfonation, sulfitination, sulfochlorination or phosphatization of fats and / or oils.
• the proportion of these fatty substances in fat-releasing agents containing sulfosuccinic acid monoamide can be up to about 40% by weight, based on the active substance.
• the proportion of sulfosuccinic acid monoamides is between about 10 and about 60 percent by weight, preferably between about 20 and about 50 percent by weight, based in each case on the active substance.
• the fatliquors to be used according to the invention are, for example, in the form of pastes, aqueous emulsions or microemulsions.
• the fatliquoring agents according to the invention are well absorbed by leather and furs and are distributed very evenly over the entire leather cross section. Furthermore, the leather and furs have a pronounced waterproofness. Compared to leather and furs, which are greased with fatty agents containing sulfosuccinic acid esters, leather and furs, which have been treated with the greasing agents according to the invention, have a significantly delayed passage of water and a reduced water absorption. The coloration of the leather and furs treated with the fatliquoring agents according to the invention is more uniform and brilliant than that of leather and fur that has been treated with fatliquoring agents containing sulfosuccinic acid monoesters.
• JZ iodine number
• AZ amine number
• AS active substance
• min. Minutes
• h hours.
• the indication "%" means “percent by weight”.
• C chain of the underlying behenylamine 15% C16, 31% C18, 10% C20, 40% C22.
• the corresponding monoamide was prepared from 98.1 g (1 mol) of maleic anhydride and 270 g (1 mol) of tallow amine. The monoamide was then at 20 to 40 ° C in an aqueous solution containing ammonium bisulfite, prepared by introducing 64 g (1 mol) of sulfur dioxide into a solution of 700 g of water and 200 g of 20% ammonia solution (about 1.1 mol of ammonia) at 20 ° C. After stirring for one hour at 40 ° C. and for two hours at 80 ° C., a well flowing dispersion with about 35% by weight of active substance was obtained.
• Cowhide leather Chrome-tanned cowhide wet blue - pH 3.8, fold thickness 1.8 mm - is processed in the usual way, but without the addition of anionic surfactants, as follows: Then a fatliquoring agent AF is added to the liquor.
• leathers A and C Compared to leathers B and E, leathers A and C had a significantly delayed water penetration and reduced water absorption.
• the coloring of leather A and C was more uniform and brilliant compared to leather B and E.
• leathers A, C, D and F were rated 5 and leathers B and E were rated 4 on a 6-point rating scale. In this level 1 means bad coloring and level 6 excellent coloring.

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• 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)
• Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)

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Publications (2)

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ID=6303384

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• 1986
  • 1986-06-20 DE DE19863620780 patent/DE3620780A1/de not_active Withdrawn
• 1987
  • 1987-05-29 SU SU874202646A patent/SU1547712A3/ru active
  • 1987-06-12 EP EP87108533A patent/EP0249908A3/fr not_active Withdrawn
  • 1987-06-17 TR TR42287A patent/TR23855A/xx unknown
  • 1987-06-19 ZA ZA874447A patent/ZA874447B/xx unknown
  • 1987-06-19 US US07/064,894 patent/US4799932A/en not_active Expired - Fee Related
  • 1987-06-19 BR BR8703082A patent/BR8703082A/pt unknown
  • 1987-06-20 JP JP62154264A patent/JPS633100A/ja active Pending
  • 1987-06-22 CA CA000540201A patent/CA1273754A/fr not_active Expired - Fee Related

Patent Citations (3)

Non-Patent Citations (1)

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