EP0853655A1 - Acrolein-vinylacetat-copolymerisathaltige gerüststoffkombinationen, wasch- und reinigungsmittel, die diese enthalten, sowie deren herstellung - Google Patents
Acrolein-vinylacetat-copolymerisathaltige gerüststoffkombinationen, wasch- und reinigungsmittel, die diese enthalten, sowie deren herstellungInfo
- Publication number
- EP0853655A1 EP0853655A1 EP96931030A EP96931030A EP0853655A1 EP 0853655 A1 EP0853655 A1 EP 0853655A1 EP 96931030 A EP96931030 A EP 96931030A EP 96931030 A EP96931030 A EP 96931030A EP 0853655 A1 EP0853655 A1 EP 0853655A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- acrolein
- vinyl acetate
- builder
- acid
- builders
- 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
- 229920001577 copolymer Polymers 0.000 title claims abstract description 31
- 239000003599 detergent Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims description 6
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 claims abstract description 40
- 150000003839 salts Chemical class 0.000 claims abstract description 23
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000008139 complexing agent Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 40
- 239000012459 cleaning agent Substances 0.000 claims description 26
- -1 alkali metal salts Chemical class 0.000 claims description 24
- 238000005406 washing Methods 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 14
- 239000010457 zeolite Substances 0.000 claims description 14
- 229910021536 Zeolite Inorganic materials 0.000 claims description 13
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 13
- 239000003945 anionic surfactant Substances 0.000 claims description 11
- 239000000344 soap Substances 0.000 claims description 10
- 239000002736 nonionic surfactant Substances 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
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- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 6
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- 159000000000 sodium salts Chemical class 0.000 description 5
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- 238000006386 neutralization reaction Methods 0.000 description 4
- 235000003441 saturated fatty acids Nutrition 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 4
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- 229920002125 Sokalan® Polymers 0.000 description 3
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
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- 229940055577 oleyl alcohol Drugs 0.000 description 3
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 description 3
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
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- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 244000274883 Urtica dioica Species 0.000 description 1
- 235000009108 Urtica dioica Nutrition 0.000 description 1
- 239000001083 [(2R,3R,4S,5R)-1,2,4,5-tetraacetyloxy-6-oxohexan-3-yl] acetate Substances 0.000 description 1
- UAOKXEHOENRFMP-ZJIFWQFVSA-N [(2r,3r,4s,5r)-2,3,4,5-tetraacetyloxy-6-oxohexyl] acetate Chemical compound CC(=O)OC[C@@H](OC(C)=O)[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](OC(C)=O)C=O UAOKXEHOENRFMP-ZJIFWQFVSA-N 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 102000004139 alpha-Amylases Human genes 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 235000015278 beef Nutrition 0.000 description 1
- 229940116226 behenic acid Drugs 0.000 description 1
- 108010047754 beta-Glucosidase Proteins 0.000 description 1
- 102000006995 beta-Glucosidase Human genes 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229960002645 boric acid Drugs 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 description 1
- 108010085318 carboxymethylcellulase Proteins 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229960000541 cetyl alcohol Drugs 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 108010005400 cutinase Proteins 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007257 deesterification reaction Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 108010093305 exopolygalacturonase Proteins 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000003752 hydrotrope Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000010699 lard oil Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 210000001724 microfibril Anatomy 0.000 description 1
- 150000005673 monoalkenes Chemical class 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- BXWNKGSJHAJOGX-UHFFFAOYSA-N n-hexadecyl alcohol Natural products CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- SXLLDUPXUVRMEE-UHFFFAOYSA-N nonanediperoxoic acid Chemical compound OOC(=O)CCCCCCCC(=O)OO SXLLDUPXUVRMEE-UHFFFAOYSA-N 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 238000006384 oligomerization reaction Methods 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 239000003605 opacifier Substances 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 150000004967 organic peroxy acids Chemical class 0.000 description 1
- VGTPKLINSHNZRD-UHFFFAOYSA-N oxoborinic acid Chemical class OB=O VGTPKLINSHNZRD-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- BXNRKCXZILSQHE-UHFFFAOYSA-N propane-1,2,3-triol;sulfuric acid Chemical class OS(O)(=O)=O.OCC(O)CO BXNRKCXZILSQHE-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 150000003333 secondary alcohols Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 239000012418 sodium perborate tetrahydrate Substances 0.000 description 1
- 229940045872 sodium percarbonate Drugs 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019351 sodium silicates Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- IBDSNZLUHYKHQP-UHFFFAOYSA-N sodium;3-oxidodioxaborirane;tetrahydrate Chemical compound O.O.O.O.[Na+].[O-]B1OO1 IBDSNZLUHYKHQP-UHFFFAOYSA-N 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- FRPJTGXMTIIFIT-UHFFFAOYSA-N tetraacetylethylenediamine Chemical compound CC(=O)C(N)(C(C)=O)C(N)(C(C)=O)C(C)=O FRPJTGXMTIIFIT-UHFFFAOYSA-N 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- 150000005691 triesters Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
Definitions
- Acrolein-vinyl acetate copolymer-containing builders, detergents and cleaning agents containing them and their preparation are acrolein-vinyl acetate copolymer-containing builders, detergents and cleaning agents containing them and their preparation.
- the present invention relates to acrolein-vinyl acetate copolymer-containing builders, detergents and cleaning agents which contain them and their preparation.
- E C- ⁇ _ 6 alkyl, linear or branched
- M H, alkali or alkaline earth metal, ammonium, substituted ammonium; with X too
- the present invention is a selection invention from this pre-filed patent application, in which partially neutralized acrolein-vinyl acetate copolymers are provided as effective constituents of builders and detergents.
- the present invention therefore relates to a builder combination of at least one builder and / or complexing agent containing at least one copolymer based on acrolein and vinyl acetate and / or its salt, characterized by a ratio of these two substances of 1: 1 to less than 5.7: 1 and an average molecular mass in the range from 3,000 to 5,000.
- the ratio of acrolein to vinyl acetate is preferably 1: 1 to 5.5: 1.
- copolymers based on acrolein and vinyl acetate have suitability criteria which are absolutely necessary for modern detergent builders, ie an elimination of alkaline earth metal ions, good primary washing properties, good secondary properties which are comparable to the properties of commercial acrylic acid-maleic acid copolymers and good technical properties Characteristics.
- the copolymers according to the invention based on acrolein and vinyl acetate have excellent graying inhibition as a component of the secondary washing performance.
- the copolymers according to the invention based on acrolein and vinyl acetate have good biodegradability in comparison with commercially available complexing agents, such as polyacrylic acid or maleic acid.
- complexing agents such as polyacrylic acid or maleic acid.
- EDTA amino acids
- a further embodiment of the invention provides that the builder combination 1 to 50 wt .-%, preferably 2 to 30 wt .-% of at least one of the aforementioned copolymers based on acrolein and vinyl acetate and / or its salt, 50 to 99 wt .-% , preferably 70 to 98 wt .-% zeolite and / or amorphous silicates and / or crystalline layered silicates of the formula yH 2 O, where M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20, and optionally contains further builders or cobuilders.
- the builder combination is sprayed with liquid to wax-like components, preferably nonionic surfactants.
- a method for producing this builders combination is used for this purpose, in which the builders combination is produced by mixing, granulating and / or spray drying.
- the zeolites are used in the usual hydrated, finely crystalline form. Their water content is preferably between 19 and 22% by weight. They have practically no particles larger than 30 micrometers and preferably consist of at least 80% of particles smaller than 10 micrometers. Their calcium binding capacity, which is determined according to the German patent application 24 12 837, is in the range from 100 to 200 mg calcium oxide per gram. Particularly suitable are zeolite A and zeolite P, also zeolite X and mixtures of A and X and / or P. Quantities and weight ratios which relate to the builders Unless otherwise stated, in the context of this invention are based on anhydrous active substance.
- Suitable substitutes or partial substitutes for phosphates and zeolite are crystalline, layered sodium silicates of the general formula yH 2 O, where M is sodium or hydrogen, x is a number from 1, 9 to 4 and y is a number from 0 to 20, and preferred values for x are 2, 3 or 4.
- Such crystalline layered silicates are described, for example, in European patent application 0 164 514.
- Preferred crystalline layered silicates of this formula are those in which M is sodium and x is 2 or 3.
- both ⁇ - and ⁇ -sodium disilicates Na 2 Si2 ⁇ 5 x yH 2 O are preferred.
- silicates are amorphous silicates with secondary washing ability, for example those according to DE-A 44 00 024, DE-A 44 19 745 and DE-P 44 46 363.4, especially sodium silicate with a molar ratio Na 2 O: SiO 2 of 1: 1 to 1: 4.5, preferably 1: 2 to 1: 3.5.
- the agents or builders combinations according to the invention can also contain mixtures of zeolite and the crystalline phyllosilicates of the above formula, the mixing ratio being arbitrary.
- zeolite is preferably used either alone or in a zeolite to crystalline layered silicate weight ratio of 10: 1 to 1: 3 and in particular 3: 1 to 1: 1.
- the present invention relates to a detergent and cleaning agent, in particular textile detergent, containing phosphate-free builders and complexing agents, which is characterized in that it contains builders in total from 10 to 60% by weight, the builders being 0.5 contains up to 20% by weight of a copolymer based on acrolein and vinyl acetate or its salt and 80 to 99.5% by weight of other builders.
- the present invention further relates to a washing and cleaning agent which is characterized in that it contains 0.5 to 20% by weight, preferably 1 to 15% by weight, of the copolymer based on acrolein and vinyl acetate and / or its salts, 0 to 50 wt .-%, preferably 10 to 35 wt .-% zeolite and 0 to 40 wt .-%, preferably 10 to 30 wt .-% of at least one amorphous silicate with secondary washing ability or a crystalline layered silicate, but this agent in addition to the copolymer contains at least one other builder based on zeolite or silicate.
- the agent generally has a bulk density between 300 and 1200 g / l, preferably between 500 and 1100 g / l.
- Another object of the present invention is a method for producing a granular washing and cleaning agent of the above composition, in which the granules are produced by spray drying.
- the granular washing and cleaning agent can be produced by a granulation or extrusion process.
- a process for producing a granular detergent and cleaning agent is preferred, in which the builder combination described above is used in the form of a spray-dried or granulated compound as an additive component to other granular constituents of detergents and cleaning agents.
- the detergents and cleaning agents according to the invention can also contain other customary builders and complexing agents, for example phosphonates, the polycarboxylic acids preferably used in the form of their sodium salts, such as citric acid, adipic acid, succinic acid, glutaric acid, aminocarboxylic acid, nitrilotriacetic acid (NTA), provided that such use is used for ecological reasons is not objectionable, as well as mixtures of these and (co) polymeric polycarboxylic acids or polycarboxylates, such as the sodium salts of Polyacrylic acids or polymethacrylic acid, for example those with a relative molecular mass of 800 to 150,000 (based on acid), in particular those of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid being preferred.
- these additional builders and complexing agents do not further contribute to the significant improvement, in particular to lower ash values. According to a preferred embodiment, this agent therefore contains no conventional copolymeric polycarboxylic acids or polycarbox
- Phosphonates preferably the neutral sodium salts of, for example, 1-hydroxyethane-1, 1-diphosphonate and
- Diethylene triamine pentamethylene phosphonate are frequently used as enzyme or bleach stabilizers in amounts of 0.1 to 1.5% by weight.
- the primary washing performance and the bleach and enzyme stability of the washing and cleaning agents according to the invention are not increased by the use of phosphonates.
- the agents according to the invention which contain acrolein-vinyl acetate copolymers or mixtures of these as complexing agents, have a lower ash value in textiles compared to a agent which contains conventional (co) polymeric polycarboxylates instead of the complexing agents according to the invention.
- the builders combinations according to the invention can also contain further constituents, for example inorganic salts which react alkaline or neutral in water.
- inorganic salts which react alkaline or neutral in water.
- the framework combination with liquid to wax-like components for example Silicone oils and paraffin oils, but are preferably sprayed with nonionic surfactants.
- washing and cleaning agents in addition to the ingredients mentioned, the washing and cleaning agents according to the invention, other known additives commonly used in washing and cleaning agents, for example surfactants, bleaching agents and bleach activators, salts which react alkaline in water, solubility improvers such as conventional hydrotropes or polyalkylene glycols, for example polyethylene glycols, foam inhibitors, optical Brighteners, enzymes, enzyme stabilizers, small amounts of neutral filler salts or fillers as well as colorants and fragrances, opacifiers or pearlescent agents.
- solubility improvers such as conventional hydrotropes or polyalkylene glycols, for example polyethylene glycols, foam inhibitors, optical Brighteners, enzymes, enzyme stabilizers, small amounts of neutral filler salts or fillers as well as colorants and fragrances, opacifiers or pearlescent agents.
- the content of anionic and nonionic surfactants including soap in these washing and cleaning agents is preferably 10 to 40% by weight, advantageously 12 to 35% by weight and in particular 15 to 30% by weight.
- Anionic surfactants of the sulfonate type include, for example, C 9 to C 3 alkylbenzenesulfonates, olefin sulfonates, that is to say mixtures of alkene and hydroxyalkanesulfonates and disulfonates such as are obtained, for example, from C12-C18 monoolefins having an end or internal double bond by sulfonation with gaseous sulfur trioxide subsequent alkaline or acidic hydrolysis of the sulfonation products is considered.
- alkanesulfonates obtained from C 2 -C alkanes, for example by sulfochlorination or sulfoxidation with subsequent hydrolysis or neutralization.
- esters of ⁇ -sulfo fatty acids are also suitable.
- esters of ⁇ -sulfo fatty acids which, by ⁇ -sulfonation of the alkyl esters of fatty acids of plant and / or animal origin with 8 to 20 C atoms in the fatty acid molecule and subsequent neutralization, result in water-soluble Mono salts are considered.
- These are preferably the ⁇ -sulfonated esters of hydrogenated coconut, palm kernel or tallow fatty acids, sulfonation products of unsaturated fatty acids, for example oleic acid, also being present in small amounts, preferably in amounts not above about 2 to 3% by weight could be.
- ⁇ -sulfofatty acid alkyl esters are preferred which have an alkyl chain with no more than 4 carbon atoms in the ester group, for example methyl esters, ethyl esters, propyl esters and butyl esters.
- the methyl esters of cc-sulfofatty acids (MES) are used with particular advantage.
- Further suitable anionic surfactants are the ⁇ -sulfofatty acids obtainable by ester cleavage of the ⁇ -sulfofatty acid alkyl esters or their disalts.
- the mono-salts of the ⁇ -sulfofatty acid alkyl esters are obtained as aqueous mixtures in limited amounts even in their large-scale production. Mixtures of mono salts and disalts with other surfactants, for example with alkylbenzenesulfonate, are also preferred.
- sulfonated fatty acid glycerol esters are sulfonated fatty acid glycerol esters.
- Fatty acid glycerol esters are to be understood as the mono-, di- and triesters and their mixtures as they are kept in the production by esterification by a monoglycerol with 1 to 3 moles of fatty acid or in the esterification of triglycerides with 0.3 to 2 moles of glycerol.
- Preferred sulfated fatty acid glycerol esters are the sulfate products of saturated fatty acids having 6 to 22 carbon atoms, for example caproic acid, caprylic acid, capric acid, myristic acid, lauric acid, palmitic acid, stearic acid and behenic acid.
- fats and oils that is to say natural mixtures of different fatty acid glycerol esters
- suitable feedstocks are palm oil, palm kernel oil, palm stearin, olive oil, rapeseed oil, kohander oil, sunflower oil, cottonseed oil, peanut oil, linseed oil, lard oil or lard.
- coconut oil palm kernel oil or beef tallow.
- the sulfonation of saturated fatty acids with 6 to 22 carbon atoms or the mixtures of fatty acid glycerol esters with iodine numbers ⁇ 5, which contain fatty acids with 6 to 22 carbon atoms, is preferably carried out by reaction with gaseous sulfur trioxide and subsequent neutralization with aqueous bases, as described in the international patent application WO 91/9009 is specified.
- the sulfate products are a complex mixture which essentially contains mono-, di- and triglyceride sulfonates with an ⁇ and / or internal sulfonic acid grouping.
- sulfonated fatty acid salts glyceride sulfates, glycerine sulfates, glycerin and soaps are formed. If one starts from the sulfonation of saturated fatty acids or hardened fatty acid glycerol ester mixtures, the proportion of the ⁇ -sulfonated fatty acid disalts can be up to about 60% by weight, depending on the procedure.
- anionic surfactants based on alkanesulfonates which are obtained from C 1 -C 2 -alkanes, for example by sulfochlorination or sulfoxidation with subsequent hydrolysis or neutralization.
- the sulfonate group is statistically distributed over the entire carbon chain, with the secondary alkanesulfonates predominating.
- Suitable anionic surfactants of the sulfate type are the sulfuric acid monoesters from primary alcohols of natural or synthetic origin, in particular from fatty alcohols, e.g. B. from tallow fatty alcohol, oleyl alcohol, lauryl, myhstyl, cetyl or stearyl alcohol or the C 10 -C 2 o-oxo alcohols, and those secondary alcohols of this chain length.
- the sulfuric acid monoesters with 1 to 6 moles of ethylene oxide ethoxylated alcohols, such as 2-methyl-branched C 9 -Cn alcohols with an average of 3.5 moles of ethylene oxide, are also suitable.
- Preferred fatty alkyl sulfates are derived from coconut oil, palm oil and palm kernel oil Fatty alcohol mixtures, which also have proportions of unsaturated alcohols, e.g. B. oleyl alcohol, may contain. Mixtures in which the proportion of the alkyl radicals is 50 to 70% by weight on C 12 , 18 to 30% by weight on C 14 , and 5 to 15% by weight on C 1 are preferred. are distributed among 3 wt .-% to 1 0 C and below 10 wt .-% to Cie.
- anionic surfactants are the salts of alkylsulfosuccinic acid, which are also referred to as sulfosuccinates or as sulfosuccinic acid esters and which are monoesters and / or diesters of sulfosuccinic acid with alcohols, preferably fatty alcohols and in particular ethoxylated fatty alcohols.
- Preferred sulfosuccinates contain C ß - CQ- to fatty alcohol radicals or mixtures thereof.
- Particularly preferred sulfosuccinates contain a fatty alcohol residue which is derived from ethoxylated fatty alcohols which are nonionic surfactants in themselves.
- sulfosuccinates the fatty alcohol residues of which are derived from ethoxylated fatty alcohols with a narrow homolog distribution, are particularly preferred.
- Suitable anionic surfactants are especially soaps, preferably in amounts of 0.5 to 5% by weight.
- Saturated fatty acid soaps such as the salts of lauric acid, myristic acid, palmitic acid or stearic acid, and in particular from natural fatty acids, e.g. B. coconut, palm kernel or tallow fatty acids, derived soap mixtures.
- the anionic surfactants can be in the form of their sodium, potassium or ammonium salts and also as soluble salts of organic bases, such as mono-, di- or triethanolamine.
- the anionic surfactants are preferably present in the form of their sodium or potassium salts.
- the preferred nonionic surfactants are liquid ethoxylated and / or propoxylated alcohols which are derived from primary alcohols preferably having 8 to 18 carbon atoms and an average of 1 to 12 mol of alkylene oxide, in which the alcohol radical can be linear or methyl in the 2-position, or may contain linear or methyl-branched radicals in the mixture, as are usually present in oxo alcohol radicals.
- linear residues of alcohols of native origin with 12 to 18 carbon atoms are preferred, such as. B. from coconut, tallow or oleyl alcohol.
- the degrees of ethoxylation given represent statistical averages, which can be an integer and a fraction for a specific product.
- Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE).
- NRE narrow range ethoxylates
- alcohol ethoxylates are preferred which have an average of 2 to 8 ethylene oxide groups.
- alkyl polyglycosides of the general formula RO (G) x can also be used as further nonionic surfactants, in which R denotes a primary, straight-chain or aliphatic radical with 8 to 22, preferably 12 to 18, C-atoms branched methyl and G denotes Is symbol which stands for a glucose unit with 5 or 6 carbon atoms, preferably for glucose.
- the degree of oligomerization x which indicates the distribution of monoglycosides or oligoglycosides, is any number between 1 and 10.
- Other suitable surfactants are polyhydroxy fatty acid amides of the general formula
- R 2 - CO stands for an aliphatic acyl radical with 6 to 22 carbon atoms
- R 3 for hydrogen, an alkyl or hydroxyalkyl radical with 1 to 4 carbon atoms
- [Z] for a linear or branched polyhydroxyalkyl radical with 3 to 10 carbon atoms and 3 to 10 Hydroxyl groups.
- the polyhydroxy fatty acid amides used are preferably fatty acid-N-alkylglucamides in which R 3 is hydrogen or an alkyl group, R 2 -CO is the acyl radical of a saturated or unsaturated fatty acid and [Z] is a glucose radical.
- sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance.
- Other useful bleaching agents are, for example, sodium percarbonate, peroxypyrophosphates, citrate perhydrates and peracid salts or peracids providing hydrogen peroxide, the perbenzoates, peroxaphthalates, diperazelaic acid or diperdodecanedioic acid.
- the bleaching agent content of the agents is preferably 5 to 25% by weight and in particular 10 to 20% by weight, advantageously using perborate monohydrate.
- bleach activators can be incorporated into the preparations.
- these are N-acyl or O-acyl compounds which form organic peracids with hydrogen peroxide, preferably N, N'-tetraacylated diamines, furthermore carboxylic acid anhydrides and Esters of polyols such as glucose pentaacetate.
- the bleach activator content of the bleach-containing agents is in the usual range, preferably between 1 and 10% by weight and in particular between 2 and 8% by weight.
- Particularly preferred bleach activators are NNN'.N -
- Graying inhibitors have the task of keeping the dirt detached from the fibers suspended in the liquor and thus preventing graying.
- Water-soluble colloids of mostly organic nature are suitable for this, for example the water-soluble salts of polymeric carboxylic acids, glue, gelatin, salts of ether carboxylic acids or ether sulfonic acids of starch and cellulose or salts of acidic sulfuric acid esters of cellulose or starch.
- Water-soluble polyamides containing acidic groups are also suitable for this purpose. Soluble starch preparations and other starch products than those mentioned above can also be used, e.g. B. degraded starch, aldehyde starches, etc. Polyvinylpyrrolidone is also useful.
- carboxymethyl cellulose sodium salt
- methyl cellulose methyl hydroxyethyl cellulose and mixtures thereof
- polyvinyl pyrrolidone for example in amounts of 0.1 to 5% by weight, based on the composition, are preferably used.
- the foaming power of the surfactants can be increased or decreased by combining suitable types of surfactants; a reduction can also be achieved by adding non-surfactant-like substances.
- a reduced foaming power, which is desirable when working in machines, is often achieved by combining different types of surfactants, e.g. B. of sulfates and / or sulfonates with nonionic surfactants and / or with soaps.
- soaps the foam-suppressing effect increases with the degree of saturation and the C number of the fatty acid salt. Soaps of natural or synthetic origin that contain a high proportion of Ci 8 -C 24 fatty acids are therefore suitable as foam-inhibiting soaps.
- Suitable non-surfactant foam inhibitors are, for example, organopolysiloxanes and their mixtures with microfine, optionally silanized silica, and paraffins, waxes, microcrystalline waxes and their mixtures with silanized silica. Mixtures of different foam inhibitors are also advantageously used, e.g. B. from silicone, paraffins or waxes.
- the foam inhibitors are preferably bound to a granular, water-soluble or dispersible carrier substance.
- Particularly suitable enzymes are those from the class of hydrolases, such as proteases, esterases, lipases or lipolytically active enzymes, amylases, cellulases or other glycosyl hydrolases and mixtures of the enzymes mentioned. All of these hydrolases contribute to the removal of stains, such as stains containing protein, fat or starch, and graying in the laundry. By removing pilling and microfibrils, cellulases and other glycosyl hydrolases can help maintain color and increase the softness of the textile. Oxidoreductases can also be used for bleaching or for inhibiting color transfer.
- hydrolases such as proteases, esterases, lipases or lipolytically active enzymes, amylases, cellulases or other glycosyl hydrolases and mixtures of the enzymes mentioned. All of these hydrolases contribute to the removal of stains, such as stains containing protein, fat or starch, and graying in the laundry. By removing pilling and micro
- Enzymes obtained from bacterial strains or fungi such as Bacillus subtilis, Bacillus licheniformis, Streptomyces griseus and Humicola insolens are particularly suitable.
- Proteases of the subtilisin type and in particular proteases which are obtained from Bacillus lentus are preferably used.
- Enzyme mixtures for example, from protease and amylase or protease and lipase or lipolytically active enzymes or protease and cellulase or from cellulase and lipase or lipolytically active enzymes or from protease, amylase and lipase or lipolytically active enzymes or protease, lipase or lipolytic enzymes and cellulase, but especially protease- and / or lipase-containing mixtures or mixtures with lipolytic enzymes of particular interest.
- lipolytic enzymes are the well-known cutinases. Peroxidases or oxidases have also proven to be suitable in some cases.
- Suitable amylases include in particular ⁇ -amylases, iso-amylases, pullulanases and pectinases.
- Cellobiohydrolases, endoglucanases and ⁇ -glucosidases, which are also called cellobiases, or mixtures thereof, are preferably used as cellulases. Since the different cellulase types differ in their CMCase and avicelase activities, the desired activities can be set by targeted mixtures of the cellulases.
- the enzymes can be adsorbed on carriers and / or embedded in coating substances in order to protect them against premature decomposition.
- the proportion of the enzymes, enzyme mixtures or enzyme granules can be, for example, approximately 0.1 to 5% by weight, preferably 0.1 to approximately 2% by weight.
- the agents can contain enzyme stabilizers.
- enzyme stabilizers For example, 0.5 to 1% by weight sodium formate can be used. It is also possible to use proteases which are stabilized with soluble calcium salts and a calcium content of preferably about 1.2% by weight, based on the enzyme.
- boron compounds for example boric acid, boron oxide, borax and other alkali metal borates, such as the salts of orthoboric acid (H 3 BO 3 ), metaboric acid (HBO 2 ) and pyrobic acid (tetraboric acid H 2 B 4 O 7 ), is particularly advantageous. .
- the agents can contain derivatives of diaminostilbenedisulfonic acid or its alkali metal salts.
- Brighteners of the substituted 4,4'-distyryl-diphenyl type may also be present, e.g. B. the compound 4,4'- bis (4-chloro-3-sulfostyry) - diphenyl. Mixtures of the aforementioned brighteners can also be used.
- Both the builder according to the invention and the washing and cleaning agents according to the invention can be prepared in a conventional manner, for example by mixing, granulating, extruding and / or by spray drying an aqueous slurry and, if appropriate, then adding temperature-sensitive components.
- detergents and cleaning agents separately manufactured builders / combinations of builders in the form of a spray-dried or granulated compound can be used as an additive component to other granular constituents of the detergent and cleaning agent. It is also possible to incorporate the builders and complexing agents into the agents individually and in a conventional manner and in any order.
- the invention is explained in more detail below by means of exemplary embodiments.
- the average molecular weight was determined by gel permeation chromatography on Lichrosphor Diol columns (Merck AG) and with phosphate buffer (pH 7) as an eluent solution. Narrowly distributed polyacrylic acid was used as the standard and calibration agent, as explained in detail in DE-A-44 17 734 (EP-A-0684 265).
- copolymer based on acrolein and vinyl acetate with a ratio of 3: 1 was prepared in aqueous media in the presence of hydrogen peroxide according to the teaching of DE-A-44 17 734 (EP-A-0684 265), in particular of the exemplary embodiments which is expressly referred to here. From this, sample A (solids content 53%) and sample B (solids content 43%) were produced.
- acrolein-vinyl acetate copolymers according to the invention which are used in detergents and cleaning agents and all of which have a better calcium binding capacity than polyacrylate, that is to say more than 200 mg of calcium carbonate per gram, were tested for their application properties in a compact detergent for their primary and secondary washing properties.
- a compact detergent which contained a commercially available acrylic acid-maleic acid copolymer.
- test conditions themselves were as follows:
- Detergent dosage 5.0 g per liter
- the detergent with samples A and B shows a clear improvement over the comparison substance C. Further clear advantages are the environmental behavior of this builder and a biodegradability of 30 and 39%.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19534022A DE19534022A1 (de) | 1995-09-14 | 1995-09-14 | Acrolein-Vinylacetat-Copolymerisathaltige Gerüststoffkombinationen, Wasch- und Reinigungsmittel, die diese enthalten sowie deren Herstellung |
DE19534022 | 1995-09-14 | ||
PCT/EP1996/003904 WO1997010322A1 (de) | 1995-09-14 | 1996-09-05 | Acrolein-vinylacetat-copolymerisathaltige gerüststoffkombinationen, wasch- und reinigungsmittel, die diese enthalten, sowie deren herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0853655A1 true EP0853655A1 (de) | 1998-07-22 |
EP0853655B1 EP0853655B1 (de) | 2000-05-24 |
Family
ID=7772118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96931030A Expired - Lifetime EP0853655B1 (de) | 1995-09-14 | 1996-09-05 | Acrolein-vinylacetat-copolymerisathaltige gerüststoffkombinationen, wasch- und reinigungsmittel, die diese enthalten, sowie deren herstellung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0853655B1 (de) |
AT (1) | ATE193318T1 (de) |
DE (2) | DE19534022A1 (de) |
ES (1) | ES2147933T3 (de) |
WO (1) | WO1997010322A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040115634A1 (en) * | 2002-12-11 | 2004-06-17 | Isis Pharmaceuticals, Inc. | Modulation of stat 6 expression |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4034131C2 (de) * | 1990-10-26 | 1999-08-26 | Henkel Kgaa | Gerüststoff für Waschmittel |
DE4303320C2 (de) * | 1993-02-05 | 1995-12-21 | Degussa | Waschmittelzusammensetzung mit verbessertem Schmutztragevermögen, Verfahren zu dessen Herstellung und Verwendung eines geeigneten Polycarboxylats hierfür |
DE4417734A1 (de) * | 1994-05-20 | 1995-11-23 | Degussa | Polycarboxylate |
-
1995
- 1995-09-14 DE DE19534022A patent/DE19534022A1/de not_active Withdrawn
-
1996
- 1996-09-05 DE DE59605319T patent/DE59605319D1/de not_active Expired - Fee Related
- 1996-09-05 ES ES96931030T patent/ES2147933T3/es not_active Expired - Lifetime
- 1996-09-05 WO PCT/EP1996/003904 patent/WO1997010322A1/de active IP Right Grant
- 1996-09-05 EP EP96931030A patent/EP0853655B1/de not_active Expired - Lifetime
- 1996-09-05 AT AT96931030T patent/ATE193318T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9710322A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE193318T1 (de) | 2000-06-15 |
DE59605319D1 (de) | 2000-06-29 |
EP0853655B1 (de) | 2000-05-24 |
ES2147933T3 (es) | 2000-10-01 |
DE19534022A1 (de) | 1997-03-20 |
WO1997010322A1 (de) | 1997-03-20 |
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