EP1592814A1 - Verfahren zur herstellung von leder - Google Patents
Verfahren zur herstellung von lederInfo
- Publication number
- EP1592814A1 EP1592814A1 EP04706144A EP04706144A EP1592814A1 EP 1592814 A1 EP1592814 A1 EP 1592814A1 EP 04706144 A EP04706144 A EP 04706144A EP 04706144 A EP04706144 A EP 04706144A EP 1592814 A1 EP1592814 A1 EP 1592814A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- general formula
- alkyl
- leather
- branched
- polymers
- 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.)
- Granted
Links
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
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/22—Chemical tanning by organic agents using polymerisation products
Definitions
- the present invention relates to a process for the production of leather, characterized in that pelts, pimples or semi-finished products are treated with at least one polymer which can be obtained by copolymerizing at least one ethylenically unsaturated dicarboxylic anhydride (A), derived from at least one dicarboxylic acid containing 4 to 8 carbon atoms, at least one vinyl aromatic compound (B) and optionally at least one ethylenically unsaturated monomer (C) different from (A) with at least one hetero atom, reaction with at least one compound (D) of the general formula I a or I b
- n is an integer from 6 to 200.
- polymers can be used for pre-tanning, main tanning and retanning.
- pretanning means that Cr compounds can be dispensed with entirely or at least partially.
- the choice of polymers can influence the properties of the leather end product.
- Various suggestions are made in the literature for the choice of the polymers.
- EP-A 0628 085 describes the use of copolymers of maleic anhydride and optionally a second monomer, for example styrene, isobutene or vinyl acetate, the copolymers being reacted with alkoxylated alcohols before use for retanning and filling.
- EP-A 0372746 discloses the use of amphiphilic copolymers of methacrylic acid and, for example, cetyl-eicosyl methacrylate (process example A) or of acrylic acid with ⁇ -hexadecene (process example C) for the aftertreatment of leather. The use of such polymers is limited to the aftertreatment of chrome-tanned leathers (see page 8, lines 50-54).
- a process is known from EP-A 0792 377 in which the tanning and optionally also the pretanning by aldehydes or other reactive carbonyl compounds is carried out in the presence of polymers, for example maleic anhydride- ⁇ -olefin-styrene terpolymers (Valiante I).
- polymers for example maleic anhydride- ⁇ -olefin-styrene terpolymers (Valiante I).
- the polymers mentioned in the prior art are not yet optimal for treating soft leather in particular.
- the fullness, grain structure and surface properties of leather produced using the previous methods can be improved.
- the distribution of the fats used in retanning in the leather cross-section is not yet optimal.
- the object was therefore to provide an improved process for the production of leather which avoids the above-mentioned weaknesses.
- the process defined at the outset was found. It is based on at least one of the polymers defined at the outset, which is composed as follows. Polymers defined at the outset contain as copolymerized monomers
- A ethylenically unsaturated dicarboxylic anhydride
- At least one vinyl aromatic compound (B), for example of the general formula VIII is at least one vinyl aromatic compound (B), for example of the general formula VIII
- a 1 the same or different and C 2 -C 6 alkylene, for example -CH 2 -, -CH (CH 3 ) -, - (CH 2 ) 2 -, -CH 2 -CH (CH 3 ) -, - (CH 2 ) 3 -, -CH 2 -CH (C 2 H 5 ) - 7 - (CH 2 ) 4 -, - (CH 2 ) 5 -, - (CH 2 ) 6 -, preferably C 2 -C -alkylene; in particular - (CH 2 ) 2 -, -CH 2 -CH (CH 3 ) - and -CH 2 -CH (C 2 H 5 ) -;
- RC Cao-alkyl linear or branched, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec.-butyl, tert.-butyl, n-pentyl, iso-pentyl, sec.
- -Pentyl neo-pentyl, 1, 2-dimethylpropyl, iso-amyl, n-hexyl, iso-hexyl, sec.-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-dodecyl, n-hexadecyl, n-octadecyl, n-eicosyl; particularly preferably CC 4 alkyl such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl and tert-butyl;
- n is an integer from 6 to 200, preferably 7 to 25. At least 0.55 equivalents (D), based on (A), are used.
- up to one equivalent (D) can be used, based on the sum (A) + (C).
- reaction with (D) is preferably carried out after the copolymerization of (A) with (B) and optionally with (C).
- Alkoxylated C 2 to C 30 alcohols in particular fatty alcohol alkoxylates, oxo alcohol alkoxylates or Guerbet alcohol alkoxylates, where the alkoxylation can be carried out with ethylene oxide, propylene oxide and / or butylene oxide, examples are
- Ci 3 -C 15 oxo alcohol alkoxylates with 6-20 ethylene oxide units, 6-20 propylene oxide units and / or at least 6 butylene oxide units;
- Styrene is preferably used as monomer (B).
- the monomer or monomers (C) which can optionally be copolymerized into the polymers used in the process according to the invention are different from (A) and have a heteroatom, for example oxygen, nitrogen or sulfur.
- o-alkyl vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether, n-butyl vinyl ether, isobutyl vinyl ether, 2-ethylhexyl vinyl ether or n-octadecyl vinyl ether;
- N-vinyl derivatives of nitrogen-containing aromatic compounds preferably N-vinylimidazole, 2-methyl-1-vinylimidazole, N-vinyloxazolidone, N-vinyltriazole, 2-vinylpyridine, 4-vinylpyridine, 4-vinylpyridine-N-oxide, N-vinylimidazoline , N-vinyl-2-methylimidazoline,
- ⁇ , jff-unsaturated nitriles such as acrylonitrile, methacrylonitrile
- R 2 , R 3 are identical or different and selected from unbranched or branched CrCio-alkyl, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec.-butyl, tert.-butyl, n -Pentyl, iso-pentyl, sec.-pentyl, neo-pentyl, 1,2-dimethylpropyl, iso-amyl, n-hexyl, iso-hexyl, sec.-hexyl, n-heptyl, n-octyl, n-nonyl , n-decyl; C 1 -C 4 -alkyl, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl and tert-buty
- R 5 is hydrogen or methyl
- x is an integer in the range from 2 to 6, preferably 3 to 5;
- y is an integer selected from 0 or 1, preferably 1;
- a is an integer in the range from 0 to 6, preferably in the range from 0 to 2;
- R 6 , R 7 are identical or different and selected from hydrogen, unbranched or branched d-do-alkyl and where unbranched and branched C 1 -C 1 0-alkyl is defined as above;
- X is oxygen or NR 4 ;
- R 9 selected from unbranched or branched C 1 -C 2 o-alkyl, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, n-pentyl , iso-pentyl, sec.-pentyl, neo-pentyl, 1, 2-dimethylpropyl, iso-amyl, n-hexyl, iso-hexyl, sec.-hexyl, n-heptyl, n-octyl, n-nonyl, n -Decyl, n-dodecyl, n-tetradecyl, n-hexadecyl, n-octadecyl, n-eicosyl; preferably C 1 -C 4 -alkyl, such as
- (meth) acrylamides such as acrylamide, N-methyl acrylamide, N, N-dimethylacrylamide, N-ethyl acrylamide, N-propylacrylamide, N-tert-butylacrylamide, N-tert-octylacrylamide, N-undecylacrylamide or the corresponding methacrylamides.
- N-vinylcarboxamides such as N-vinylformamide, N-vinyl-N-methylfomamide, N-vinyl acetamide or N-vinyl-N-methylacetamide
- Representatives selected by way of example for compounds of the formula IV b are N-vinylpyrrolidone, N-vinyl-4-piperidone and N-vinyl-e-caproIactam.
- Compounds of formula VI selected by way of example are (meth) acrylic acid esters and amides such as N, N-dialkylaminoalkyl (meth) acrylates or N.N-dialkylaminoalkyl (meth) acrylamides;
- Examples are N, N-dimethylaminoethyl acrylate, N, N-dimethylaminoethyl methacrylate, N, N-diethylaminoethyl acrylate, N, N-diethylaminoethyl methacrylate, N, N-dimethylaminopropyl acrylate, NN-dimethylaminopropyl methacrylate, N, N-diethyl amine propyl Diethylaminopropyl methacrylate, 2- (N, N-dimethylamino) ethyl acrylamide, 2- (N, N-dimethylamino) ethyl methacrylamide, 2- (N
- Compounds of formula VII selected by way of example are vinyl acetate, vinyl propionate, vinyl butyrate, vinyl 2-ethylhexanoate or vinyl laurate.
- the following are very particularly preferably used as monomer (C): acrylic acid, methacrylic acid, methyl acrylate, methyl methacrylate, acrylamide, vinyl n-butyl ether, vinyl isobutyl ether, N-vinylformamide, N-vinylpyrrolidone, 1-vinylimidazole and 4-vinylpyridine ,
- the molar ratio (A): (B) is in the range from 1: 0.1 to 10, preferably 1: 0.2 to 5, particularly preferably 1: 0.3 to 3.
- the molar ratio (A) to (C) is in the range from 1: 0 to 1:10, preferably 10: 1 to 1: 5, particularly preferably 5: 1 to 1: 3.
- the molar ratio (A) to [(B) + (C)] is in the range from 2: 1 to 1:20, preferably 1: 1 to 1:10, particularly preferably 1: 1 to 1: 6th
- the polymers used according to the invention can be prepared by methods which are known per se. It is thus possible to copolymerize the monomers (A), (B) and optionally (C) by solution polymerization, precipitation polymerization or else solvent-free by bulk polymerization and then reacting them with (D). (A), (B) and optionally (C) can copolymerize in the form of random copolymers, as alternating copolymers or as block copolymers. Pressure and temperature conditions for a copolymerization of (A), (B) and optionally (C) are generally not critical. The temperatures are, for example, in the range from 40 to 200 ° C., preferably 60 to 150 ° C., the pressure is, for example, in the range from 1 to 10 bar, preferably 1 to 3 bar.
- Suitable solvents are those solvents which are considered to be inert to anhydrides of dicarboxylic acid having 4 to 8 carbon atoms, in particular acetone, tetrahydrofuran or 1,4-dioxane.
- Suitable precipitants are aromatic and aliphatic hydrocarbons, for example toluene, ortho-xylene, meta-xylene, para-xylene, ethylbenzene or mixtures of one or more of the aromatic hydrocarbons mentioned above, n-hexane, petroleum ether or isododecane. Mixtures of aromatic and aliphatic hydrocarbons are also suitable.
- Regulators can be used, for example mercaptoethanol or n-dodecyl mercaptan. Suitable amounts are, for example, 0.1 to 6% by weight, based on the mass of all monomers.
- the copolymerization is advantageously started by initiators, for example peroxides or hydroperoxides.
- Peroxides or hydroperoxides are di-tert-butyl peroxide, tert-butyl peroctoate, tert-butyl perpivalate, tert-butyl per-2-ethylhexanoate, tert-butyl per-maleate, tert-butyl perisobutyrate, benzoyl peroxide, diacetyl peroxide, succinyl peroxide, p-Chlorobenzoyl peroxide, dicyclohexyl peroxide dicarbonate, exemplified.
- redox initiators are also suitable, as are azo compounds such as 2,2'-azobis (isobutyronitrile), 2,2'-azobis (2-methylpropion-amidine) dihydrochloride and 2,2'-azobis (4-methoxy-2,4 dimethylvaleronitrile).
- these initiators are used in amounts of 0.1 to 20% by weight, preferably 0.2 to 15% by weight, based on the mass of all monomers.
- copolymerization described above gives copolymers.
- the resulting copolymers can be subjected to cleaning by conventional methods, for example falling over or extractive removal of unreacted monomers. If a solvent or precipitant has been used, it is possible to remove it after the copolymerization has ended, for example by distillation.
- the resulting copolymers are not subjected to additional purification and are immediately reacted with (D).
- the copolymerization is carried out in the presence of all or part of the compound (D) to be used.
- copolymers described above are reacted with (D), for example, at temperatures from 90 to 150 ° C.
- the copolymers described above are reacted with (D), for example, at pressures of 1 to 10 bar, preferably 1 to 3 bar.
- the amount of (D) is calculated so that a complete conversion of (D) is assumed and 5 to 80 mol%, preferably 10 to 67 mol%, particularly preferably 20 to 50 mol% (D) are obtained on all carboxyl groups of the copolymer.
- the duration of the reaction of the copolymers described above with (D) is generally 0.1 to 8 hours, preferably 1 to 5 hours.
- the reaction of the copolymers described above with (D) can be carried out in the absence or presence of catalysts, in particular acidic catalysts such as e.g. Sulfuric acid, methanesulfonic acid, p-toluenesulfonic acid, n-decylbenzenesulfonic acid, hydrochloric acid or acidic ion exchangers.
- catalysts in particular acidic catalysts such as e.g. Sulfuric acid, methanesulfonic acid, p-toluenesulfonic acid, n-decylbenzenesulfonic acid, hydrochloric acid or acidic ion exchangers.
- the copolymers described above are reacted with (D) in the presence of an entrainer which forms an azeotrope with water which may be formed in the reaction.
- the carboxyl groups of the anhydrides (A) and, if appropriate, the carboxyl groups from (C) react completely or to a certain extent. In general, less than 40 mol% remain as unreacted I a or I b.
- the further step of separating unreacted I a or I b from the polymers used in the process according to the invention can be dispensed with.
- those described above are used Polymers together with a certain percentage of unreacted I a or I b for the production of leather.
- the polymers are reacted with water or with an aqueous alkaline solution and partially or completely hydrolyzed polymers are obtained, which are also referred to below as hydrolyzed polymers.
- the hydrolysis is carried out according to the invention in such a way that the polymers according to the invention are mixed with water or an aqueous alkaline solution, such as, for example, alkali metal hydroxides, e.g. Sodium hydroxide or potassium hydroxide, of ammonia, primary, secondary or tertiary alkylamines or alkanolamines.
- alkali metal hydroxides e.g. Sodium hydroxide or potassium hydroxide
- ammonia primary, secondary or tertiary alkylamines or alkanolamines.
- sodium hydroxide solution or potassium hydroxide solution are particularly suitable.
- about 20 to 50% by weight of water or aqueous alkaline solution, based on the copolymer is used.
- the temperature during the hydrolysis is generally not critical. In general, 20 to 100 ° C., preferably up to 90 ° C., are suitable.
- the hydrolysis is usually complete after 10 minutes to 4 hours.
- the polydispersity of the hydrolyzed polymers described above is generally between 2 and 10, preferably up to 7.
- the K values of the hydrolyzed polymers described above are 6 to 100, preferably 10 to 60 (measured according to H. Fikentscher at 25 ° C. in water and a polymer concentration of 1% by weight).
- the polymers or hydrolyzed polymers described above can be used according to the invention in pretanning or tanning. According to the invention, the polymers or hydrolyzed polymers described above can be used in retanning.
- the process according to the invention for the production of leather can be carried out as a process for pretanning or tanning, hereinafter also called the tanning process according to the invention.
- the tanning process according to the invention is based on the skins of animals, such as cattle, pigs, goats or deer, which are pretreated by conventional methods, the so-called naked ones. It is for that The tanning process according to the invention does not significantly determine whether the animals have been killed, for example, by slaughtering or have died of natural causes.
- Conventional pretreatment methods include, for example, liming, descaling, pickling and pickling, as well as mechanical work steps, such as fleshing the skins.
- the tanning process according to the invention is generally carried out by adding one or more tanning agents according to the invention in one portion or in several portions immediately before or during the tanning step.
- the tanning process according to the invention is preferably carried out at a pH of 2.5 to 4, it being frequently observed that the pH increases by about 0.3 to three units while the tanning process according to the invention is being carried out.
- the pH can also be increased by about 0.3 to three units by adding blunting agents.
- the tanning process according to the invention is generally carried out at temperatures from 10 to 45 ° C., preferably at 20 to 30 ° C. A duration of 10 minutes to 12 hours has proven useful, and one to three hours are preferred.
- the tanning process according to the invention can be carried out in any vessels customary in tanning, for example by milling in barrels or in rotated drums.
- the polymers or hydrolyzed polymers described above are used together with one or more conventional tanning agents, for example with chrome tanning agents, mineral tanning agents, syntans, polymer tanning agents or vegetable tanning agents, as described, for example, in Ullmann's Encyclopedia of Industrial Industry. mistry, volume A15, pages 259 to 282 and in particular page 268 ff., 5th edition, (1990), Verlag Chemie Weinheim.
- the weight ratio of the above-described polymer or hydrolyzed polymer: conventional tanning agent or the sum of the conventional tanning agents is advantageously from 0.01: 1 to 100: 1.
- only a few ppm of the conventional tanning agents are used in the above-described polymers or hydrolyzed polymers. However, it is particularly advantageous to completely dispense with the addition of conventional tanning agents.
- the polymers or hydrolyzed polymers described above are added in one portion or in several portions before or during the pretanning, in a special variant already in the pimple.
- the process according to the invention for the production of leather can also be carried out as a process for retanning leather using the above-described polymers or hydrolyzed polymers, hereinafter also referred to as the retanning process according to the invention.
- the retanning process according to the invention is based on semifinished products tanned conventionally, for example with chrome tanning agents, mineral tanning agents, polymer tanning agents, aldehydes, syntans or resin tanning agents, or semifinished products produced according to the invention as described above.
- the above-described polymers or hydrolyzed polymers are allowed to act on semi-finished products.
- the retanning process according to the invention can be carried out under otherwise customary conditions.
- One or more is expediently chosen, i.e. 2 to 6 steps and can rinse with water between steps.
- the temperature in the individual action steps is in each case from 5 to 60 ° C., preferably 20 to 45 ° C.
- agents which are usually used during retanning for example fat lickers, polymer tanning agents and fatliquors based on acrylate and / or methacrylate, retanning agents based on resin and vegetable tanning agents, fillers, leather dyes or emulsifiers.
- aqueous dispersions and solutions containing the hydrolyzed polymers described above are understood to mean, for example, emulsions or suspensions of the polymers described above.
- the aqueous dispersions according to the invention and the aqueous solutions according to the invention usually contain from 20 to 50% by weight of the polymers according to the invention.
- Their pH is usually 2 to 10 and is preferably in the range of 2 to 7.
- the dispersions according to the invention contain unreacted I a or I b.
- Another aspect of the present invention is leather, produced by the tanning process according to the invention or the retanning process according to the invention or by a combination of the tanning process according to the invention and the retanning process according to the invention.
- the leathers according to the invention are distinguished by an overall advantageous quality, for example they feel particularly soft.
- the leathers according to the invention contain the polymers or the hydrolyzed polymers described above are distributed particularly evenly over the cross section.
- Another aspect of the present invention is the use of the leather according to the invention for the production of clothing, furniture or auto parts.
- items of clothing include jackets, pants, shoes, belts or braces.
- Furniture in connection with the present invention includes all such furniture that contains leather components.
- Seating furniture such as armchairs, chairs and sofas are examples.
- Car seats are examples of car parts.
- Another aspect of the present invention are clothing items containing or made from leathers according to the invention.
- Another aspect of the present invention is furniture containing or made from leathers according to the invention.
- Another aspect of the present invention are auto parts containing or made from leathers according to the invention. The invention is illustrated by working examples.
- a 41% by weight thin-viscosity polymer solution with a K value of 36 (1% in H 2 O) is obtained.
- D1 methyl polyethylene glycol with a molar mass M w of approx. 500 g / mol
- D2 methyl polyethylene glycol with a molar mass M w of approx. 1000 g / mol
- D3 C 15 H 31 -O- (CH 2 -CH 2 -O) 7 -H
- CH 2 CH-CH 2 -O (CH 2 -CH 2 -O) 10 -H
- the K value of the intermediate product VP10 which was in the form of a white powder, was 15.9 (1% by weight in cyclohexanone at 25 ° C.).
- the polymers P10 to 14 were prepared from the intermediate products VP 10 and VP 13 and the alkyl polyalkylene glycols given in Table 2 by heating a mixture of the two components under nitrogen. The reaction took place within 4 hours at a temperature of 170 ° C. After cooling to 50 ° C., the oil was dispersed with 50 g of water and 10 g of aqueous 25% by weight sodium hydroxide solution. The molar ratio NaOH / (sum of maleic anhydride and acrylic acid) was 0.6 / 1.0, so that 30 to 40% by weight of dispersions with a pH of 6 to 7 resulted.
- D5 n-butyl polyalkylene glycol (ethylene glycol / propylene glycol copolymer, molar proportion of ethylene glycol units: propylene glycol units 50:50) with M w of approx. 1000 g / mol
- D6 C 15 H 3 iO- (CH 2 -CH (CH 3 ) -O) 3 (CH 2 -CH 2 -O) 12 -H
- Zebu-Wetblue leather commercially available from Packer, USA, was folded to a thickness of 1.8-2.0 mm and cut into strips of 600 g each. The strips were then in a barrel and a liquor length of 200% by weight at intervals of 10 minutes with 2% by weight sodium formate, 0.4% by weight NaHCO 3 and 1% by weight TamolONA, commercially available from BASF Aktiengesellschaft, transferred. After 90 minutes the fleet was drained. The strips were then distributed to separate walk-in barrels.
- the leather thus obtained was washed with water, dried and stalled and evaluated according to the test criteria set out in Table 3.
- the tensile strength was determined in accordance with DIN 53328.
- Fleet consumption was assessed visually according to the criteria of residual dye (extinction) and turbidity (fatliquor).
- the other application-related properties were assessed by test subjects according to a grading system from 1 (very good) to 5 (poor).
- Polymer V17 polyacrylic acid with a K value of 60, determined according to Fikentscher, partially neutralized with NaOH to a pH of 5.
- Polymer V18 polymer from EP-B 0628 085,
- Example 18 polymer V19: polymer from EP-B 0628 085, example 20.
- the nakedness of a South German cattle was converted into a corresponding wetwhite half-weight with 2.5% by weight of glutardialdehyde and 3% by weight of the Basyntan® sulfon tanning agent, commercially available from BASF Aktiengesellschaft, in each case based on the weight of the nakedness. After pretanning, the pH was 3.9).
- the pre-tanned pelt was wilted, folded to a thickness of 1.2 mm and cut into strips of 400 g each.
- Strips containing 100% water, 6% by weight of the sulfonic acid were tanning agent Basyntan® DLX-N, 5% by weight of the vegetable tanning agent Tara®, 3% by weight of the resin tanning agent Relugan® S as well as 1.5% by weight of coloring agent Luganil brown NGB®, each commercially available from BASF Aktiengesellschaft, via a Treated period of 60 minutes at 25 ° C-30 ° C in the barrel at 10 revolutions per minute. A pH of 3.6 is then set with formic acid and, after a further 20 minutes, the liquor is drained off and discarded.
- a pH of 3.2 was acidified with formic acid and appropriate samples were taken before draining the liquor.
- the leathers are washed twice with 100% water each, stored in a moist place overnight and dried after walking on a tenter at 50 ° C. After the tunnel, the leathers were evaluated as below.
- the leather thus obtained was washed with water, dried and stalled and evaluated according to the test criteria set out in Table 3.
- the tensile strength was determined in accordance with DIN 53328.
- Fleet consumption was assessed visually according to the criteria of residual dye (extinction) and turbidity (fatliquor).
- the other application-related properties were assessed by test subjects according to a grading system from 1 (very good) to 5 (poor).
- Polymer V17 polyacrylic acid with a K value of 60, determined according to Fikentscher, partially neutralized with NaOH to a pH of 5.
- Polymer V18 polymer from EP-B 0628085
- Example 18 polymer V19: polymer from EP-B 0628 085 , Example 20.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10304959 | 2003-02-06 | ||
DE10304959A DE10304959A1 (de) | 2003-02-06 | 2003-02-06 | Verfahren zur Herstellung von Leder |
PCT/EP2004/000777 WO2004070063A1 (de) | 2003-02-06 | 2004-01-29 | Verfahren zur herstellung von leder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1592814A1 true EP1592814A1 (de) | 2005-11-09 |
EP1592814B1 EP1592814B1 (de) | 2010-10-13 |
Family
ID=32730837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04706144A Expired - Lifetime EP1592814B1 (de) | 2003-02-06 | 2004-01-29 | Verfahren zur herstellung von leder |
Country Status (9)
Country | Link |
---|---|
US (1) | US20060130241A1 (de) |
EP (1) | EP1592814B1 (de) |
KR (1) | KR20050097973A (de) |
CN (1) | CN100523224C (de) |
AR (1) | AR043361A1 (de) |
AT (1) | ATE484599T1 (de) |
BR (1) | BRPI0406758A (de) |
DE (2) | DE10304959A1 (de) |
WO (1) | WO2004070063A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202006011724U1 (de) * | 2006-07-31 | 2007-12-06 | Schaefer, Philipp | Fahrzeugsitz |
ES2547306T3 (es) | 2007-09-03 | 2015-10-05 | Basf Se | Procedimiento para la preparación de formulaciones acuosas, formulaciones acuosas y su uso |
WO2009030567A1 (de) * | 2007-09-03 | 2009-03-12 | Basf Se | Verfahren zur herstellung von wässrigen formulierungen, wässrige formulierungen und ihre verwendung |
JP5466678B2 (ja) * | 2011-08-31 | 2014-04-09 | 下越生コン建設株式会社 | 選別バケット |
EP2607499A3 (de) * | 2013-02-14 | 2013-07-10 | Basf Se | Verfahren zur Herstellung von Leder |
CN116376036A (zh) * | 2023-04-20 | 2023-07-04 | 东南大学 | 一种梳型聚羧酸盐分散剂及其制备方法和应用 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2068999B (en) * | 1980-02-11 | 1984-02-22 | British Leather Mfg Res | Tanning leather |
DE4205839A1 (de) * | 1992-02-26 | 1993-09-02 | Basf Ag | Verwendung von umsetzungsprodukten von homo- oder copolymerisaten auf basis monoethylenisch ungesaettigter dicarbonsaeureanhydride mit aminen oder alkoholen zum fetten und fuellen von leder oder pelzfellen |
DE4334796A1 (de) * | 1993-10-13 | 1995-04-20 | Bayer Ag | Weichmachende und hydrophobierende Nachgerbstoffe |
DE19610553A1 (de) * | 1996-03-18 | 1997-09-25 | Henkel Kgaa | Verfahren zur Herstellung von Leder |
-
2003
- 2003-02-06 DE DE10304959A patent/DE10304959A1/de not_active Withdrawn
-
2004
- 2004-01-29 US US10/544,138 patent/US20060130241A1/en not_active Abandoned
- 2004-01-29 WO PCT/EP2004/000777 patent/WO2004070063A1/de active Application Filing
- 2004-01-29 KR KR1020057014283A patent/KR20050097973A/ko not_active Application Discontinuation
- 2004-01-29 DE DE502004011774T patent/DE502004011774D1/de not_active Expired - Lifetime
- 2004-01-29 AT AT04706144T patent/ATE484599T1/de not_active IP Right Cessation
- 2004-01-29 BR BR0406758-4A patent/BRPI0406758A/pt not_active Application Discontinuation
- 2004-01-29 EP EP04706144A patent/EP1592814B1/de not_active Expired - Lifetime
- 2004-01-29 CN CNB2004800036489A patent/CN100523224C/zh not_active Expired - Fee Related
- 2004-02-02 AR ARP040100309A patent/AR043361A1/es not_active Application Discontinuation
Non-Patent Citations (1)
Title |
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See references of WO2004070063A1 * |
Also Published As
Publication number | Publication date |
---|---|
BRPI0406758A (pt) | 2005-12-20 |
AR043361A1 (es) | 2005-07-27 |
ATE484599T1 (de) | 2010-10-15 |
DE502004011774D1 (de) | 2010-11-25 |
CN1748038A (zh) | 2006-03-15 |
WO2004070063A1 (de) | 2004-08-19 |
US20060130241A1 (en) | 2006-06-22 |
KR20050097973A (ko) | 2005-10-10 |
DE10304959A1 (de) | 2004-08-19 |
EP1592814B1 (de) | 2010-10-13 |
CN100523224C (zh) | 2009-08-05 |
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