EP2057257B1 - Laundry detergent additive based on clay minerals and pvp-containing copolymers - Google Patents
Laundry detergent additive based on clay minerals and pvp-containing copolymers Download PDFInfo
- Publication number
- EP2057257B1 EP2057257B1 EP07801918A EP07801918A EP2057257B1 EP 2057257 B1 EP2057257 B1 EP 2057257B1 EP 07801918 A EP07801918 A EP 07801918A EP 07801918 A EP07801918 A EP 07801918A EP 2057257 B1 EP2057257 B1 EP 2057257B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- detergent additive
- clay mineral
- pvp
- copolymer
- monomer units
- 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.)
- Not-in-force
Links
- 239000003599 detergent Substances 0.000 title claims description 111
- 239000000654 additive Substances 0.000 title claims description 89
- 239000002734 clay mineral Substances 0.000 title claims description 74
- 229920001577 copolymer Polymers 0.000 title claims description 70
- 230000000996 additive effect Effects 0.000 title claims description 66
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 55
- 239000000203 mixture Substances 0.000 claims description 37
- 239000004094 surface-active agent Substances 0.000 claims description 37
- 229920001525 carrageenan Polymers 0.000 claims description 32
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 30
- 239000000679 carrageenan Substances 0.000 claims description 28
- 229940113118 carrageenan Drugs 0.000 claims description 27
- 239000000178 monomer Substances 0.000 claims description 24
- 235000010418 carrageenan Nutrition 0.000 claims description 23
- 239000000440 bentonite Substances 0.000 claims description 22
- 229910000278 bentonite Inorganic materials 0.000 claims description 22
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 22
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 21
- 235000019353 potassium silicate Nutrition 0.000 claims description 20
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 19
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 16
- 150000001768 cations Chemical class 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 239000004753 textile Substances 0.000 claims description 14
- 239000008187 granular material Substances 0.000 claims description 12
- 239000002736 nonionic surfactant Substances 0.000 claims description 11
- 238000009472 formulation Methods 0.000 claims description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims description 8
- 150000002191 fatty alcohols Chemical class 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 239000004990 Smectic liquid crystal Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000005341 cation exchange Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 47
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 44
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 44
- 239000004927 clay Substances 0.000 description 28
- 239000000243 solution Substances 0.000 description 27
- 239000000523 sample Substances 0.000 description 23
- 235000012216 bentonite Nutrition 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
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- 239000004744 fabric Substances 0.000 description 12
- -1 ester alcohols Chemical class 0.000 description 11
- 230000006872 improvement Effects 0.000 description 9
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 9
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- 239000000047 product Substances 0.000 description 6
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 5
- BGRWYDHXPHLNKA-UHFFFAOYSA-N Tetraacetylethylenediamine Chemical compound CC(=O)N(C(C)=O)CCN(C(C)=O)C(C)=O BGRWYDHXPHLNKA-UHFFFAOYSA-N 0.000 description 5
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 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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- 239000000539 dimer Substances 0.000 description 3
- 239000001177 diphosphate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 3
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- IBDSNZLUHYKHQP-UHFFFAOYSA-N sodium;3-oxidodioxaborirane;tetrahydrate Chemical compound O.O.O.O.[Na+].[O-]B1OO1 IBDSNZLUHYKHQP-UHFFFAOYSA-N 0.000 description 3
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- OSSNTDFYBPYIEC-UHFFFAOYSA-N 1-ethenylimidazole Chemical compound C=CN1C=CN=C1 OSSNTDFYBPYIEC-UHFFFAOYSA-N 0.000 description 2
- 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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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
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- 238000007561 laser diffraction method Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 150000002772 monosaccharides Chemical class 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000273 nontronite Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001542 oligosaccharide Polymers 0.000 description 1
- 150000002482 oligosaccharides Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000879 optical micrograph Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052615 phyllosilicate Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000000075 primary alcohol group Chemical group 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000275 saponite Inorganic materials 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 235000019351 sodium silicates Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- ODBPOHVSVJZQRX-UHFFFAOYSA-M sodium;[2-[2-[bis(phosphonomethyl)amino]ethyl-(phosphonomethyl)amino]ethyl-(phosphonomethyl)amino]methyl-hydroxyphosphinate Chemical compound [Na+].OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)([O-])=O ODBPOHVSVJZQRX-UHFFFAOYSA-M 0.000 description 1
- QBIHEHITTANFEO-UHFFFAOYSA-N sodium;tetrahydrate Chemical compound O.O.O.O.[Na] QBIHEHITTANFEO-UHFFFAOYSA-N 0.000 description 1
- 239000013042 solid detergent Substances 0.000 description 1
- 239000012439 solid excipient Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000005550 wet granulation Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 239000002888 zwitterionic surfactant Substances 0.000 description 1
Images
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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
- C11D3/1246—Silicates, e.g. diatomaceous earth
- C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
-
- 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
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
-
- 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
- C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
- C11D3/3776—Heterocyclic compounds, e.g. lactam
Definitions
- the invention relates to a detergent additive for improving the soft feel of textile products, a process for its preparation and its use.
- the GB 1 400 898 describes a detergent formulation for simultaneous cleaning and softening.
- anionic, ampholytic and zwitterionic synthetic surfactants, organic or inorganic "builder” and a smectic three-layer clay mineral are used.
- the EP 0 313 146 describes a detergent formulation for improving the softening feel.
- This contains conventional surfactants, a smectic clay mineral and fountain solution, such as polyols, ethers derived therefrom and ester alcohols and mono- and oligosaccharides.
- the detergent formulation contains polymeric flocculants such as polyethylene oxide, polyacrylamide and polyacrylate.
- Detergent additives to improve the soft feel are also used in the US 2005/0170997 described.
- silicone oils and optionally ionic polymers and other auxiliaries, such as builders, bleaches, flocculants and color transfer inhibitors are used.
- the EP 0 299 575 describes a softening agent detergent composition consisting of a smectic clay mineral and a polymeric flocculant such as polyethylene oxide having molecular weights between 100,000 g / mol and 10,000,000 g / mol.
- a softening agent detergent composition consisting of a smectic clay mineral and a polymeric flocculant such as polyethylene oxide having molecular weights between 100,000 g / mol and 10,000,000 g / mol.
- quaternary ammonium compounds and anionic, nonionic, amphoteric and zwitterionic surfactants can be used.
- the EP-A-653 480 A1 describes a detergent composition
- a detergent composition comprising a layered silicate of the formula NaMSi x O 2x + 1yH 2 O, where M is sodium or hydrogen and x is a number between 1.9 and 4 and y is a number between 0 and 20.
- the detergent composition contains as flocculant a polymer which consists of polymers and Copolymers selected from monomers such as ethylene oxide, acrylamide, acrylic acid, dimethylaminoethyl methacrylate, vinyl alcohol, vinylpyrrolidone, ethyleneimine and mixtures thereof.
- the detergent composition contains the layered silicate in a proportion of less than 5% by weight, based on the detergent composition.
- EP 719 856 A1 describes a fabric softener comprising as plasticizer a clay mineral and crosslinked polymers to prevent a dye transfer.
- Crosslinked polyvinylpyrrolidone and a cross-linked polyvinylpyrrolidone / vinylimidazole copolymer are described as exemplary polymers.
- a soft-washing detergent which contains (a) anionic surfactants, nonionic and / or amphoteric surfactants, (b) cationic polymers, (c) zeolites, and (d) optionally phyllosilicates.
- graft polymers based on polyvinylpyrrolidone as a grayness inhibitor in the washing and aftertreatment of textile fibers containing synthetic fibers.
- a vinyl ester for example, vinyl acetate is grafted.
- the graft polymers can also be adsorbed on the surface of adjusting agents, for example sodium sulfate or builders (zeolites) and other solid excipients of the detergent formulation.
- the increase in the clay mineral content does not increase to the same extent the soft touch, so that in the prior art must be used to no small extent on other additives.
- examples include the quaternary ammonium salts, surfactants, flocculants and Silicone oils, both alone and in combination.
- these additives increase to a not insignificant extent the cost of detergent formulations. In addition, they are less biodegradable compared to formulations with high clay mineral content. In addition, these additives are in many cases of health, especially in terms of skin tolerance and its allergenic potential, questionable. For these reasons, therefore, a further increase of the clay content while improving the soft touch is desirable and useful.
- the invention therefore an object of the invention to develop cost-effective detergent additives for especially granular detergent formulations based on clay minerals, which avoid the disadvantages of the prior art, and improved by the use of clay mineral, other health and ecologically harmless additives, and an improved Distinguish soft grip.
- this object is achieved with a detergent additive according to claim 1.
- Advantageous embodiments of the detergent additive according to the invention are the subject of the dependent claims.
- the clay mineral may be both a natural and a synthetically produced clay.
- the terms clay and clay mineral are used synonymously herein.
- the construction of particularly advantageous clay minerals will be discussed in detail in the following sections.
- the clay mineral due to its morphological properties, such as platelet-shaped alumino-silicates with a particle size diameter smaller than 2 microns, and its chemical-physical properties, such as the sliding behavior , deposited between and / or on the cotton fibers. This allows the fibers to slide better with each other, which leads to the improvement of the soft touch.
- the clay also supports the washing process by absorbing dirt particles and making them easier to remove when washed.
- the detergent additive according to the invention it has surprisingly been found that when a combination of at least one clay mineral and at least one PVP (polyvinylpyrrolidone) and VA (vinyl acetate) -containing copolymer is used, the softness improves significantly.
- the copolymers can be present with regular or irregular alternating structural units (for example .ABABA or -AAABBABBB-), as well as block copolymers (eg. A x -B y ).
- block copolymers include A x B y block copolymers, A x B y A z triblock copolymers, A x B y C z triblock copolymers, A y (B x ) z block copolymers or copolymers having a block A backbone and B side chains (comb polymers) as well as mixtures of the foregoing.
- the combination of clay mineral and PVP / VA copolymer improves according to one aspect of the invention, the deposition of the clay mineral on the textile fiber and thus increases the softness of the clay mineral.
- the detergent additive contains a surfactant.
- a surfactant Generally, those skilled in the art common surfactants are used.
- the surfactants are charged (ionic surfactant) or uncharged (nonionic surfactant), surface-active organic compounds, wherein at least one hydrophilic molecular segment is soluble in polar solvents and poor or insoluble in nonpolar solvents.
- the surfactant contains at least one further hydrophobic molecular segment which is soluble in non-polar solvents and poorly or not soluble in polar solvents.
- surfactants are substances which reduce the interfacial tension and have a characteristic structure of at least one hydrophilic and one hydrophobic group.
- preferred clay minerals are smectite clay minerals. These clays have a structure of layered polysilicate units. Examples of smectic clay minerals are beidellite, hectorite, saponite, stevensite, nontronite and montmorillonite or bentonite.
- the surfactant is a nonionic surfactant.
- nonionic surfactants are hydrophobic hydrocarbon chains and hydrophilic ethylene oxide chains, propylene oxide chains or polyols.
- Non-limiting examples of nonionic surfactants are fatty alcohol ethoxylates, polyethylene glycol ethers, alkyl glycosides, alkyl polyglycosides, sorbitan fatty acid esters, alkylphenyl ethoxylates, alkyl phosphine oxides, and silicone surfactants.
- the PVP / VA copolymer is a copolymer containing only polyvinylpyrrolidone and polyvinyl acetate monomer units.
- the PVP / VA copolymer contains one or more other monomer units. These other monomer units may be contained in a proportion of 0.1 to 20 mol% in the PVP-VA copolymer. Suitable monomers are, for example, vinylimidazole, vinyl oxazolidone, vinyl propionate, methyl or ethyl (meth) acrylate.
- the PVP / VA copolymer generally has a vinyl pyrrolidone monomer unit content of about 1 to 99%.
- the PVP / VA copolymer has a proportion of vinyl acetate (VA) monomer units of at least about 20%, preferably at least 30%, more preferably at least 40%, more preferably at least 50%. It has thus been found that the improvement of the softness surprisingly increases with increasing content or proportion of the PVP / VA copolymer on VA. Further, it is preferred that the PVP / VA copolymer has a proportion of vinyl acetate monomer units of not more than about 90%, preferably not more than 80%, more preferably not more than 75%.
- the PVP / VA copolymer has a ratio of vinylpyrrolidone monomer units to vinyl acetate monomer units of between about 80:20 and 20:80, in particular between about 70:30 and 30:70.
- powdery PVP / VA copolymers are preferably used.
- Such powdery PVP / VA copolymers preferably have a ratio of vinylpyrrolidone monomer units to vinyl acetate monomer units of between about 70:30 and 60:40.
- PVP / VA copolymers which are processed in dissolved form, for example as an aqueous alcoholic solution. These have a higher proportion of vinyl acetate monomers on.
- An exemplary copolymer has a ratio of vinyl pyrrolidone monomer units to vinyl acetate monomer units of about 50:50.
- the PVP / VA comonomers preferably have a molecular weight in the range of 100,000 to 1,000,000 g / mol. Preferred ranges for the molecular weight are 300.00 - 900,000 g / mol and 500,000 to 800,000 g / mol.
- the detergent additive contains at least one carrageenan.
- the carrageenan both alone and in combination with the clay mineral, the surfactant and / or the PVP / VA copolymer, further improves the soft feel.
- Carrageenans are known to the person skilled in the art and it is possible to use all known carrageenans in the context of the present invention. They are the salts of linear galactose polysaccharides (of marine origin).
- ⁇ -carrageenan is a chain molecule composed of dimeric building blocks, ⁇ -D-galactosido (1,4) - ⁇ -D-galactose. These dimers are linked 1,3-glycosidically.
- the primary alcohol group of ⁇ -D-galactose is esterified with sulfuric acid, and the hydroxy groups on C2 of both galactoses are also approximately 70% esterified with sulfuric acid.
- ⁇ -carrageenan thus has a sulphate content between 32 and 39%.
- K- and L-carrageenans are composed of the dimer carrabiose in which ⁇ -D-galactose is 1,4-glycosidically bound to ⁇ -D-3,6-anhydrogalactose. These dimers are linked by 1,3-glycosidic bonds to form a chain molecule.
- the difference between the two carrageenan types lies in the sulfation.
- the sulfate ester group is located at C-4 of galactose, the sulfate content fluctuates between 25 and 30%.
- L-carrageenan the hydroxyl group on the C-2 of the anhydrogalactose is additionally esterified with sulfuric acid.
- the sulphate content is between 28 and 35%.
- the average molecular weight of carrageenan is between 100,000 g / mol and 800,000 g / mol.
- carrageenans are health and ecologically harmless additives.
- the detergent additive according to the invention contains at least one carrageenan having a molecular weight of 50,000 g / mol to 1,000,000 g / mol, more preferably 100,000 g / mol to 800,000 g / mol.
- the smectite clay mineral is a bentonite.
- Bentonite consists for the most part of montmorillonite.
- the aluminosilicate montmorillonite is a three-layer material, composed of two SiO 4 tetrahedral layers, between which there is an octahedral layer of predominantly aluminum ions.
- divalent ions such as calcium or magnesium, creates a negative excess charge, which can be compensated for example by Mg 2+ , Ca 2+ , Na + .
- the bentonite By exchanging these cations, the bentonite also acts as an ion exchanger. In addition to the different charges, cations such as Na + and Ca 2+ also significantly influence the swelling behavior of the bentonite. Thus, stored calcium ions cause a narrower layered structure, while embedded sodium ions allow a more open stratification of the bentonite. In addition, the bentonite is able to store surfactants and thus to change its absorbency of textile fabric.
- the particle size of the clay mineral can have an influence on the improvement of the softness.
- the clay mineral is in particulate form, wherein at least 10 wt .-%, preferably at least 14 wt .-%, more preferably between about 10 and 50 wt .-% of the particles, more preferably between about 10 and 30 wt .-% of the particles have a particle size of less than about 600 nm.
- the particle sizes can be determined by standard methods such as the laser diffraction method using a Fritsch Particle Sizer Analysette 22 Economy (Fritsch, DE) according to the manufacturer's instructions, also with regard to sample pretreatment.
- the sample is homogenized in deionized water without addition of auxiliaries and sonicated for 5 minutes.
- the particle size determination is carried out as in Jasmund / Lagaly, "Tonminerale und Tone", Steinkopf-Verlag Darmstadt (1993), page 16 and the one in there Reference Tributh & Lagaly (1986) "Treatment and Identification of Soil and Deposit Entities", GIT laborz. Lab 30: 524 and 771.
- the above preferred particle sizes of the clay mineral are according to an alternative aspect of the present invention also independent of the use of the clay mineral in a detergent or detergent additive in combination with the PVP / VA copolymer, the surfactant and / or the carrageenan.
- the clay mineral is in activated form, i. Bi- or trivalent cations stored between the layers are exchanged for monovalent ions, such as sodium ions or protons.
- activated clay minerals are used in a manner known per se, e.g. made with soda. By exchanging the ions, the swelling capacity of the bentonite increases, which in turn influences the absorption properties.
- the clay mineral in particular the bentonite, is characterized in that at least 50%, preferably at least 60% and particularly preferably at least 80% of the cation exchange capacity (CEC) of monovalent cations, such as Na + , K + or NH 4 + , is formed.
- CEC cation exchange capacity
- the detergent additive contains at least 80 wt .-%, preferably at least 85 wt .-% clay mineral, such as bentonite.
- clay mineral such as bentonite.
- the high proportion of clay mineral, such as bentonite lowers the cost of the detergent additive compared to the surfactant or the other polymeric additives.
- no chemical classifications of the product are required. This results in lower costs for storage, transport and later handling of the detergent additive.
- the percentage data refer to a clay mineral, which still has a residual moisture content of about 10 wt .-%.
- the nonionic surfactant of the detergent additive is particularly preferably selected from the group of fatty alcohol ethoxylates and polyethylene glycol ethers. These differ essentially by the manufacturing process. Both groups have the same basic structure of a linear or branched hydrophobic hydrocarbon chain (C x ) and a hydrophilic ethylene oxide chain (EO y ) with terminal alcohol group (s). These control both the efficiency, ie the required amount of surfactant, and the temperature sensitivity of the surfactant class. Within the hydrophilic ethylene oxide group, moreover, individual ethylene oxide units can be exchanged for propylene oxide units. The resulting changes in the hydrophobic / hydrophilic character can be used specifically in the selection of surfactants.
- the fatty alcohol ethoxylates in particular can be obtained from natural raw materials and are generally almost completely biodegradable.
- the detergent additive contains, based on the mass, clay mineral, more than 0.001% by weight, particularly preferably more than 0.01% by weight. %, particularly preferably more than 0.01% by weight of fatty alcohol ethoxylate and / or polyethylene glycol ether.
- more than 0.1 wt .-% no further improvement is usually observed, so that a higher proportion of fatty alcohol ethoxylate and / or polyethylene glycol ether from an economic point of view is no longer or at best limited makes sense. In most cases an addition of up to 0.06 wt .-% is sufficient to obtain the desired properties.
- the detergent additive based on the mass of clay mineral, more than 0.001 wt .-%, more preferably more than 0.01 wt .-%, more preferably more than 0.01 wt .-% polyvinylpyrrolidone-polyvinyl acetate (PVP / VA) copolymer ,
- PVP / VA polyvinylpyrrolidone-polyvinyl acetate copolymer
- the detergent additive preferably contains more than 0.05% by weight, preferably more than 0.5% by weight, particularly preferably more than 1% by weight, of water glass, based on the mass of clay mineral.
- the percentages refer to the solids content of the water glass.
- the modulus (SiO 2 : Na 2 O) of the water glass is preferably selected in the range from 2.4 to 3.5, more preferably from 2.6 to 3.4. It has surprisingly been found that with a water glass-based binding system, for example, granules are easier to loosen and thus show improved soft-grip effects.
- the use of water glass also avoids the formation of compact flakes of charged polymers (partially protonated copolymer PVP / VA) and oppositely charged clay fins, which on the one hand dissolve worse and on the other hand would also deposit on the fiber to a lesser extent. This effect can be circumvented by using an aqueous binder system based on a waterglass.
- the water glasses are preferably used in a solids content of between 0.5 and 8% by weight, preferably between 3 and 5% by weight.
- the detergent additive of the invention may also be in liquid form or in the form of powder or Moldings, such as tablets or balls, are present.
- the use of water glasses ensures that a sufficiently rapid disintegration of the granules or moldings occurs and thus leads in combination with the specified components of the detergent additive to an increased softness.
- the process for the preparation of a detergent additive comprises, before, simultaneously with or after step c), at least one surfactant, in particular a nonionic surfactant, being admixed.
- at least one surfactant in particular a nonionic surfactant, being admixed.
- This may be provided together with the PVP-VA copolymer and the clay mineral and mixed therewith in the manner known to those skilled in the art.
- the surfactant and / or PVP-VA copolymer is provided in the form of a common or separate aqueous solution.
- polar organic solvents such as, for example, methanol, ethanol, formamide, dimethylformamide, pyridine, dimethylsulfoxide-containing solutions are also suitable.
- the surfactant and the PVP-VA copolymer are mixed in a first step.
- This can be done both from the pure substances, and particularly preferably from aqueous solutions of the surfactant and the PVP-VA copolymer.
- These are then applied to the clay mineral using methods known to those skilled in the art.
- the application can be done by spraying or by mixing in a mixer with the clay mineral.
- a mechanical fluidized bed is preferably produced.
- the intensive mixers known from the prior art can be used in batchwise or continuous processes.
- the mixture of PVP-VA copolymer, surfactant and clay mineral is then dried and optionally formed into granules, compacts or tablets.
- the granules are dried and sieved after mixing (wet granulation).
- appropriate particle sizes are set, as are common in the detergent industry, for example in a grain band range between 0.2 and 1.2 mm, 0.4 and 1.4 mm, 1.0 and 2.0 mm.
- the production of shaped articles, such as e.g. Pressings or tablets can be carried out by the methods and additives known to those skilled in the art.
- additives are binders, coatings and additives (e.g., carbonates and citric acid) which facilitate dissolution of the molded articles.
- the method of making the detergent additive comprises adding carrageenan as described herein. This can be added in a separate aqueous solution or mixed in a common solution with surfactant and PVP-VA copolymer with the clay mineral. The addition of carrageenan while the softness is surprisingly further improved.
- the process for the preparation of the detergent additive comprises the addition of water glass, in particular in the form of an aqueous solution.
- a water glass solution solids content preferably about 34-36%
- module SiO 2 ratio: Na 2 O
- Preferred regions of the module have already been specified above.
- This solution can be further diluted and mixed, for example, in a ratio of 2-3: 1 with water and then used in the process according to the invention.
- solid water glass it is also possible to use solid water glass. The use of water glass thereby improves the dissolution of the finished granules and thus prevents flocculation, which impedes a uniform distribution of the clay granules on the textile fiber.
- the laundry additive described herein is used to improve the softening.
- the detergent additive is also suitable as a separate softener both in solid, e.g. granular, as well as in liquid form.
- the components such as the (nonionic) surfactant or the clay mineral, increase the release of the soil particles and the stabilization of the same in the wash liquor.
- the detergent additive is used as a component of liquid or solid detergents, cleaners and conditioners, with the foregoing advantages. This reduces the consumption of detergent and reduces the costs for the end user and simplifies the washing process. All conventional washing, cleaning and care products can be used, such as, for example, laundry detergents, dishwashing detergents and dishwashing detergents, hand soaps, stain removers, bleaches, shower gels, shampoos, body lotions, creams, cleansing preparations. and care products for eg motor vehicles, ships and aircraft, as well as for surface treatment or impregnation.
- Another aspect of the invention relates to the use of the detergent additive of the invention to improve the softness and / or hue preservation of substances and / or textiles (textile materials), in particular selected from the group consisting of cotton, silk, wool, polyester, polyamide, elastane ®, Nylon ® , viscose, especially of cotton-containing fabrics.
- textile materials in particular selected from the group consisting of cotton, silk, wool, polyester, polyamide, elastane ®, Nylon ® , viscose, especially of cotton-containing fabrics.
- Yet another aspect of the invention relates to the use of at least one carrageenan in a detergent additive and / or a laundry, cleaning or care composition, in particular for improving the soft feel and / or the color retention of textile materials.
- test detergent For the following washing tests, a standard test detergent was used.
- the test detergent IEC 60456 which was commissioned by the Wfk Research Institute for Cleaning Technology e. V., used.
- the composition of this test detergent is shown in Table 1.
- the components sodium perborate tetrahydrate and tetraacetylethylenediamine were not part of the test detergent and were mixed with the test detergent before dosing. These components were also produced by the Wfk Research Institute for Cleaning Technology e. V. related.
- the data on the mass concentration of these components in the test detergent are also given in Table 1.
- Table 1 Composition of IEC 60456 (reference basic detergent type A).
- the bleaching components sodium perborate tetrahydrate and tetraacetylethylenediamine were added.
- component Wt .-% Linear Na-alkyl-benzenesulfonate 8.8% Ethoxylated fatty alcohol C 12-18 (7 EO) 4.7% Na-soap 3.2% Defoamer DC2-4248S 3.9% Zeolite 4A 28.3% Na-carbonate 11.6% Na salt of a copolymer of acrylic and maleic acid (Sokalan CP5) 2.4% Na-silicate 3.0% carboxymethylcellulose 1.2% Dequest 2066 2.8% Optical brightener 0.2% Na sulfate 6.5% protease 0.4% Total basic detergent: 77% Sodium tetrahydrate 15.3% Tetraacetylethylenediamine (TAED) 7.7%
- sample material the washed towel or the washed test fabric
- the samples were weighed into the porcelain crucible, ashed and then calcined in the oven at 850 ° C. for 60 minutes. After cooling in the desiccator, the samples were weighed and the tissue washes were calculated in weight percent of the tissue weighed. For comparison, samples were also ashed, which were not washed at all and only with test detergent. From the difference of the ashing residues of the samples, with corresponding additives or granules and the samples, which were washed only with test detergent, the "net ashing residue" was determined.
- the proof of the ionic freedom of the wash water is carried out on NH 4 + ions with the sensitive Nessler's reagent.
- the washing rate may vary between 30 minutes and 3 days depending on the type of clay.
- the washed out NH 4 + clay is removed from the filter, dried at 110 ° C for 2 hours, ground, sieved (63 micron sieve) and dried again at 110 ° C for 2 hours. Thereafter, the NH 4 + content of the clay is determined according to Kjeldahl.
- the CEC of the clay is the Kjeldahl NH 4 + content of the NH 4 + clay (CEC of some clay minerals, see Appendix). The data are given in meq / 100 g clay.
- the cations released by the exchange are in the wash water (filtrate).
- the proportion and the type of monovalent cations ("exchangeable cations") was determined spectroscopically in the filtrate according to DIN 38406, part 22.
- the wash water (filtrate) is concentrated for AAS determination, transferred to a 250 ml volumetric flask and filled with deionized water to the measuring mark. Suitable measuring conditions for FAAS can be found in the following tables.
- Table 2 Parameters for FAAS determination Part 1 element calcium potassium lithium magnesium sodium Wavelength (nm) 422.7 766.5 670.8 285.2 (202.6) 589.0 Gap width (nm): 0.2 0.5 0.5 0.5 0.2 Integral time (sec): 3 3 3 3 3 3 Flame gases: N 2 O / C 2 H 2 Air / C 2 H 2 Air / C 2 H 2 N 2 O / C 2 H 2 Air / C 2 H 2 Underground Comp .: No No No Yes No Measurement type: conc. conc. conc. conc. conc. conc.
- Ionization buffer 0.1% KCl 0.1% NaCl 0.1% NaCl 0.1% KCl 0.1% KCl Burner position 15-20 ° - - - - Calibration level (mg / l): 1-5 mg / l 1-5 mg / l 2-10 mg / l 0.5-3 mg / l (5-40 mg / l) 1-5 mg / l element aluminum iron Wavelength (nm): 309.3 248.3 Gap width (nm): 0.5 0.2 Integral time (sec): 3 3 3 Flame gases: N 2 O / C 2 H 2 Air / C 2 H 2 Untergrundkomp .: Yes No Measurement type: conc. conc. Ionisationspuffer: 0.1% KCl - Burner position - - Calibration mode. (Mg / l): 10-50 mg / l 1-5 mg / l
- overactivated clays ie those which have been activated with a greater than stoichiometric amount of, for example, soda
- the sum of the determined amounts of monovalent cations can exceed the CEC determined as indicated above.
- the total monovalent cation content Li, K, Na is considered to be 100% of the CEC.
- the methylene blue value is a measure of the inner surface of the clay materials.
- 0.5 g of wet test bentonite with a known internal surface are weighed to the nearest 0.001 g in an Erlenmeyer flask. Add 50 ml of tetrasodium diphosphate solution and heat the mixture to boiling for 5 minutes. After cooling to room temperature, 10 ml of 0.5 molar H 2 SO 4 are added and 80 to 95% of the expected final consumption of methylene blue solution is added. With the glass rod, a drop of the suspension is taken and placed on a filter paper. It forms a blue-black spot with a colorless yard. It is then added in portions of 1 ml more Methylenblauans and repeated the dot sample. The addition takes place until the yard turns slightly light blue, so that the added Methylenblaumenge is no longer absorbed by the test bentonite.
- the test of the clay material is carried out in the same way as for the test bentonite. From the used amount of methylene blue solution, the inner surface of the clay material can be calculated.
- 381 mg methylene blue / g clay correspond to a content of 100% montmorillonite according to this method.
- the clay mineral provided (the clay minerals used are described in Table 4) is mixed with an aqueous solution of the surfactant and the PVP / VA copolymer.
- the following solutions 1 and 2 were prepared:
- Solution 1 In 250 ml of a mixture of water glass (Silicate de Soude 38/40, Type 16 N 34, Brenntag SA, Chassieu, FR) and water in a ratio of 2: 1, 0.1 g of carrageenan was dissolved (Satiagel TM ME4 , Molecular weight 100,000-800,000, Degussa Testurant Systems GmbH & Co. KG, Hamburg, DE). To this solution was added 1.5 ml of a 5% C 12 -C 14 alcohol polyethylene glycol ether (EO) 7 (Marlipal 24/70, Sasol & Surfactants, Marl, DE) solution.
- EO polyethylene glycol ether
- Solution 2 In 1 L of distilled water was dissolved 2.5 g of PVP / VA copolymer (PVP / VA S-630, ISP Global Technologies, Texas City, US).
- Table 4 Overview of the clays used (bentonites) Sound 1 Sound 2 Sound 3 Sound 4 Main interlayer cation Na + Ca 2+ / Mg 2+ Na + Ca 2+ Share Ca 2+ at the CEC 0% 80% 0% 78% Proportion of Na + at the CEC 100% 20% 100% 22% CEC [meq / 100g] * 72 76 90 95 Montmorillonite content [%] ** 75 80 90 94 * Total cation exchange capacity of the sample ** Determination with methylene blue method
- FIG. 1 shows the results of the soft grip index experiments.
- the composition of the samples W3 and W10 corresponds to the composition given above and differs only in the type of clay mineral used and the surfactant.
- the clay minerals and surfactants used in samples W3 and W10 are shown in Table 5.
- Table 5 Variable composition of samples W0, W3 and W10 sample volume surfactant W3 Sound 1 C 10 EO 4 W10 Sound 3 C 12-14 EO 7 W0 * - - * Test detergent
- the softening with both the sample W3 and the sample W10 is increased by a factor of 2-3. Both samples contain an activated clay mineral. However, an improvement of the soft touch can also be achieved with a non-activated clay mineral. The soft touch can be increased by about 50% compared to the test detergent (not shown).
- FIG. 2 shows the influence of the individual additives according to the invention on the softness.
- the composition of the samples is shown in Table 6.
- the driveways correspond to those in Example 1 except for the respectively omitted components
- FIG. 2 can be seen, one achieves the best softness in the use of all additives of the invention in sample B17. It turned out that the best increase in softness results from the combination of the individual components. (B18) and carrageenan (B19) omitted -
- non-ionic surfactant was (14 EO 7 C 12 -C 14 alcohol polyethylene glycol ether (7 EO) C 12).
- the Weichgriffindex thereby reduced in comparison to the sample B17, which contains all components of the invention.
- FIG. 2 also shows that surprisingly, by the addition of surfactant in sample B19, as well as by the further addition of carrageenan in sample B17, the soft hand can be further improved.
- Sample B17 (with all the components according to the invention) has approximately the same ashing residue (not shown), such as a detergent additive containing only the clay mineral.
- ashing residue such as a detergent additive containing only the clay mineral.
- the soft handle index of the inventive sample B17 is substantially improved compared to the detergent additive of pure clay mineral.
- Table 6 Composition of samples B17-B19 additives B17 B18 B19 Sound 1 X X X C 12 -C 14 -alcohol-polyethylene glycol-colether (7 EO) X X K-carrageenan X X PVP-VA copolymer X X X Water glass solution (2: 1) X X X
- test fabrics standard cotton fabric
- test detergent composition according to Table 1 There were 14 colored test fabrics (standard cotton fabric) with a) the test detergent composition according to Table 1 and b) with the test detergent composition according to Table 1 with the addition of 3% of the inventive additive prepared before Table 4 with Clay 1, but with 3-fold Content of PVP / VA copolymer washed at 60 ° C 5 times.
- the colored test textiles would then be checked for color retention after the 5th wash according to ISO 105-A05.
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Description
Die Erfindung betrifft ein Waschmitteladditiv zur Verbesserung des Weichgriffs von textilen Erzeugnissen, ein Verfahren zu dessen Herstellung und dessen Verwendung.The invention relates to a detergent additive for improving the soft feel of textile products, a process for its preparation and its use.
Der Einsatz von Waschmitteladditiven, die den Weichgriff der Wäsche erhöhen, ist seit langer Zeit bekannt und findet in vielen Waschmittelformulierungen Anwendung. Im Zuge sich ändernder Richtlinien zum Chemikalieneinsatz sowohl in der industriellen Anwendung als auch im Bereich der Haushaltschemikalien kommen viele der bis jetzt teilweise sehr erfolgreich eingesetzten Substanzen auf den Prüfstand. Auch die immer weiter zunehmende Zahl von Allergien und Unverträglichkeiten gegenüber einzelnen Waschmittelzusätzen erfordert eine verstärkte Anstrengung zum Ersatz problematischer Zusatzstoffe. Vor allem im Bereich der Weichspüler, d.h. bei Formulierungen, die den Weichgriff der Stoffe erhöhen, ist der Bedarf an unproblematischen Ersatzstoffen groß. Die Wirksubstanzen der Weichspüler werden auf den Textilfasern abgelagert und kommen damit über einen längeren Zeitraum in direkten Kontakt mit der Haut.The use of detergent additives that increase the softness of the laundry has long been known and is used in many detergent formulations. In the course of changing guidelines for the use of chemicals both in industrial applications and in the area of household chemicals, many of the substances that have so far been used very successfully to date are put to the test. Also, the ever-increasing number of allergies and intolerances to individual detergent additives requires an increased effort to replace problematic additives. Especially in the field of fabric softeners, ie in formulations that increase the softness of the fabrics, the need for unproblematic substitutes is great. The active substances of the fabric softener are deposited on the textile fibers and thus come into direct contact with the skin over a longer period of time.
Die
Die
Waschmittelzusätze zur Verbesserung des Weichgriffs werden auch in der
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Die Steigerung des Tonmineralanteils steigert jedoch nicht im gleichen Masse den Weichgriff, so dass im Stand der Technik in nicht geringem Umfang auf weitere Zusätze zurückgegriffen werden muss. Beispiele hierfür sind die schon erwähnten quaternären Ammoniumsalze, Tenside, Flockulationsmittel und Silikonöle, sowohl alleine als auch in Kombination. Diese Zusätze erhöhen jedoch in einem nicht unwesentlichen Maße die Kosten der Waschmittelformulierungen. Zudem sind sie im Vergleich zu Formulierungen mit hohem Tonmineralanteil schlechter biologisch abbaubar. Hinzu kommt, dass diese Zusätze in vielen Fällen gesundheitlich, vor allem im Bezug auf die Hautverträglichkeit und ihr allergenes Potential, bedenklich sind. Aus den genannten Gründen ist daher eine weitere Erhöhung des Tonanteils bei gleichzeitiger Verbesserung des Weichgriffs wünschenswert und sinnvoll.However, the increase in the clay mineral content does not increase to the same extent the soft touch, so that in the prior art must be used to no small extent on other additives. Examples include the quaternary ammonium salts, surfactants, flocculants and Silicone oils, both alone and in combination. However, these additives increase to a not insignificant extent the cost of detergent formulations. In addition, they are less biodegradable compared to formulations with high clay mineral content. In addition, these additives are in many cases of health, especially in terms of skin tolerance and its allergenic potential, questionable. For these reasons, therefore, a further increase of the clay content while improving the soft touch is desirable and useful.
Der Erfindung lag daher die Aufgabe zugrunde, kostengünstige Waschmitteladditive für vor allem granulare Waschmittelformulierungen auf der Basis von Tonmineralien zu entwickeln, die die Nachteile des Standes der Technik vermeiden, und sich durch die Verwendung von Tonmineral, anderen gesundheitlich und ökologisch unbedenklichen Zusätzen, sowie einen verbesserten Weichgriff auszeichnen.The invention therefore an object of the invention to develop cost-effective detergent additives for especially granular detergent formulations based on clay minerals, which avoid the disadvantages of the prior art, and improved by the use of clay mineral, other health and ecologically harmless additives, and an improved Distinguish soft grip.
Nach einem ersten Aspekt der vorliegenden Erfindung wird diese Aufgabe mit einem Waschmitteladditiv nach Patentanspruch 1 gelöst. Vorteilhafte Ausführungsformen des erfindungsgemäßen Waschmitteladditivs sind Gegenstand der abhängigen Ansprüche.According to a first aspect of the present invention, this object is achieved with a detergent additive according to
Das erfindungsgemäße Waschmitteladditiv zur Verbesserung des Weichgriffs von textilen Erzeugnissen weist dabei mindestens die folgenden Komponenten auf:
- a) ein Tonmineral;
- b) ein PVP-VA Copolymer.
- a) a clay mineral;
- b) a PVP-VA copolymer.
Bei dem Tonmineral kann es sich dabei sowohl um einen natürlichen als auch einem synthetisch hergestellten Ton handeln. Die Begriffe Ton bzw. Tonmineral werden hierin gleichbedeutend verwendet. Auf den Aufbau besonders vorteilhafter Tonmineralien wird in den nächsten Abschnitten ausführlich eingegangen. Der Einfluss von Tonmineralen auf den Weichgriff von Textilfasern, wie beispielsweise Baumwolle, wird dadurch begründet, dass sich das Tonmineral aufgrund seiner morphologischen Eigenschaften, wie z.B. plättchenförmige Alumo-Silicate mit einem Teilchengrößendurchmesser kleiner als 2 µm, und seiner chemisch-physikalischen Eigenschaften, wie dem Gleitverhalten, zwischen und/oder auf den Baumwollfasern ablagert. Dadurch können die Fasern untereinander besser gleiten, was zur Verbesserung des Weichgriffs führt. Neben der Verbesserung des Weichgriffs unterstützt der Ton auch den Waschvorgang, indem er Schmutzpartikel absorbiert und diese im Nachwaschen leichter entfernt werden können.The clay mineral may be both a natural and a synthetically produced clay. The terms clay and clay mineral are used synonymously herein. The construction of particularly advantageous clay minerals will be discussed in detail in the following sections. Of the Influence of clay minerals on the softness of textile fibers, such as cotton, is due to the fact that the clay mineral due to its morphological properties, such as platelet-shaped alumino-silicates with a particle size diameter smaller than 2 microns, and its chemical-physical properties, such as the sliding behavior , deposited between and / or on the cotton fibers. This allows the fibers to slide better with each other, which leads to the improvement of the soft touch. In addition to improving the soft feel, the clay also supports the washing process by absorbing dirt particles and making them easier to remove when washed.
Bei dem erfindungsgemäßen Waschmitteladditiv wurde überraschend gefunden, dass sich bei Verwendung einer Kombination aus mindestens einem Tonmineral und mindestens einem PVP (Polyvinylpyrrolidon)- und VA (Vinylacetat) haltigen Copolymer der Weichgriff signifikant verbessert. Die Copolymere können dabei mit sowohl regelmäßig oder unregelmäßig alternierenden Struktureinheiten (bspw. -A-B-A-B-A- oder -A-A-A-B-B-A-B-B-B-), sowie auch als Blockcopolymere vorliegen (bspw. Ax-By). Mögliche, nicht beschränkende Strukturen für Blockcopolymere schließen AxBy-Blockcopolymere, AxByAz-Triblockcopolymere, AxByCz-Triblockcopolymere, Ay(Bx)z-Blockcopolymere oder Copolymere mit einer Block A-Rückgratkette und B-Seitenketten (Kammpolymere) sowie Gemische der Vorgenanten mit ein. Die Kombination aus Tonmineral und PVP/VA Copolymer verbessert dabei nach einem Aspekt der Erfindung die Abscheidung des Tonminerals auf der Textilfaser und erhöht damit den Weichgriff des Tonminerals.In the case of the detergent additive according to the invention, it has surprisingly been found that when a combination of at least one clay mineral and at least one PVP (polyvinylpyrrolidone) and VA (vinyl acetate) -containing copolymer is used, the softness improves significantly. The copolymers can be present with regular or irregular alternating structural units (for example .ABABA or -AAABBABBB-), as well as block copolymers (eg. A x -B y ). Possible non-limiting structures for block copolymers include A x B y block copolymers, A x B y A z triblock copolymers, A x B y C z triblock copolymers, A y (B x ) z block copolymers or copolymers having a block A backbone and B side chains (comb polymers) as well as mixtures of the foregoing. The combination of clay mineral and PVP / VA copolymer improves according to one aspect of the invention, the deposition of the clay mineral on the textile fiber and thus increases the softness of the clay mineral.
Im Rahmen der vorliegenden Erfindung hat sich überraschend gezeigt, dass die Verwendung mindestens eines PVP/VA Copolymers eine unerwartete Verbesserung des Weichgriffs bereitgestellt.In the context of the present invention, it has surprisingly been found that the use of at least one PVP / VA copolymer provides an unexpected improvement of the soft handle.
Gemäß einer weiteren bevorzugten Ausführungsform enthält das Waschmitteladditiv ein Tensid. Allgemein können die dem Fachmann geläufigen Tenside eingesetzt werden. Bei den Tensiden handelt es sich um geladene (ionisches Tensid) bzw. ungeladene (nichtionisches Tensid), grenzflächenaktive organische Verbindungen, wobei zumindest ein hydrophiler Molekülabschnitt in polaren Lösungsmitteln löslich und in unpolaren Lösungsmitteln schlecht beziehungsweise nicht löslich ist. Des Weiteren enthält das Tensid mindestens einen weiteren hydrophoben Molekülabschnitt, der in unpolaren Lösungsmitteln löslich und in polaren Lösungsmitteln schlecht beziehungsweise nicht löslich ist. Eine allgemeine Definition für Tenside findet sich auch beispielsweise im
Gemäß einer weiteren Ausführungsform sind bevorzugte Tonmineralien dabei smektische Tonminerale. Diese Tone besitzen einen Aufbau aus schichtförmigen Polysilicateinheiten. Beispiele für smektische Tonminerale sind Beidellite, Hectorite, Saponite, Stevensite, Nontronite und Montmorillonite bzw. Bentonite.According to another embodiment, preferred clay minerals are smectite clay minerals. These clays have a structure of layered polysilicate units. Examples of smectic clay minerals are beidellite, hectorite, saponite, stevensite, nontronite and montmorillonite or bentonite.
In einer bevorzugten Ausführungsform handelt es sich bei dem Tensid um ein nichtionisches Tensid. Häufig wiederkehrende Strukturelemente bei nichtionischen Tensiden sind dabei hydrophobe Kohlenwasserstoffketten und hydrophile Ethylenoxidketten, Propylenoxidketten oder Polyole. Nicht beschränkende Beispiele für nichtionische Tenside sind Fettalkoholethoxylate, Polyethylenglycolether, Alkylglycoside, Alkylpolyglycoside, Sorbitanfettsäureester, Alkylphenylethoxylate, Alkylphosphinoxide und Silicontenside.In a preferred embodiment, the surfactant is a nonionic surfactant. Frequently recurring structural elements in the case of nonionic surfactants are hydrophobic hydrocarbon chains and hydrophilic ethylene oxide chains, propylene oxide chains or polyols. Non-limiting examples of nonionic surfactants are fatty alcohol ethoxylates, polyethylene glycol ethers, alkyl glycosides, alkyl polyglycosides, sorbitan fatty acid esters, alkylphenyl ethoxylates, alkyl phosphine oxides, and silicone surfactants.
Gemäß einer bevorzugten Ausführungsform handelt es sich bei dem PVP/VA Copolymer um ein Copolymer, dass nur Polyvinylpyrrolidon- und Polyvinylacetat-Monomereinheiten enthält. Nach einer alternativen Ausführungsform enthält das PVP/VA Copolymer jedoch neben den Vinylpyrrolidon-Monomereinheiten und den Vinylacetat-Monomereinheiten noch ein oder mehrere andere Monomereinheiten. Diese anderen Monomereinheiten können in einem Anteil von 0,1 bis 20 mol-% in dem PVP-VA Copolymer enthalten sein. Geeignete Monomere sind beispielsweise Vinylimidazol, Vinyloxazolidon, Vinylpropionat, Methyl- oder Ethyl(meth)acrylat.In a preferred embodiment, the PVP / VA copolymer is a copolymer containing only polyvinylpyrrolidone and polyvinyl acetate monomer units. After an alternative However, in addition to the vinylpyrrolidone monomer units and the vinyl acetate monomer units, the PVP / VA copolymer contains one or more other monomer units. These other monomer units may be contained in a proportion of 0.1 to 20 mol% in the PVP-VA copolymer. Suitable monomers are, for example, vinylimidazole, vinyl oxazolidone, vinyl propionate, methyl or ethyl (meth) acrylate.
Nach einer bevorzugten Ausführungsform weist das PVP/VA Copolymer allgemein einen Gehalt an Vinylpyrrolidon-Monomereinheiten von etwa 1 bis 99 % auf.In a preferred embodiment, the PVP / VA copolymer generally has a vinyl pyrrolidone monomer unit content of about 1 to 99%.
Es ist auch bevorzugt, dass das PVP/VA Copolymer einen Anteil an Vinylacetat (VA)-Monomereinheiten von mindestens etwa 20 %, vorzugsweise mindestens 30 %, weiter bevorzugt mindestens 40 %, weiter bevorzugt mindestens 50 %, aufweist. So wurde gefunden, dass die Verbesserung des Weichgriffs mit steigendem Gehalt bzw. Anteil des PVP/VA Copolymers an VA überraschend zunimmt. Weiter ist es bevorzugt, dass das PVP/VA Copolymer einen Anteil an Vinylacetat-Monomereinheiten von nicht mehr als etwa 90 %, vorzugsweise nicht mehr als 80 %, weiter bevorzugt nicht mehr als 75 %, aufweist.It is also preferred that the PVP / VA copolymer has a proportion of vinyl acetate (VA) monomer units of at least about 20%, preferably at least 30%, more preferably at least 40%, more preferably at least 50%. It has thus been found that the improvement of the softness surprisingly increases with increasing content or proportion of the PVP / VA copolymer on VA. Further, it is preferred that the PVP / VA copolymer has a proportion of vinyl acetate monomer units of not more than about 90%, preferably not more than 80%, more preferably not more than 75%.
Nach einer weiteren bevorzugten Ausführungsform des erfindungsgemäßen Waschmitteladditivs weist das PVP/VA Copolymer ein Verhältnis von Vinylpyrrolidon-Monomereinheiten zu Vinylacetat-Monomereinheiten zwischen etwa 80:20 und 20:80, insbesondere zwischen etwa 70:30 und 30:70 auf. Unter technischen Gesichtspunkten werden bevorzugt pulverförmige PVP/VA Copolymere verwendet. Derartige pulverförmige PVP/VA Copolymere weisen bevorzugt ein Verhältnis von Vinylpyrrolidon-Monomereinheiten zu Vinylacetat-Monomereinheiten zwischen etwa 70 : 30 und 60 : 40 auf. Es ist aber auch möglich, PVP/VA Copolymere einzusetzen, die in gelöster Form verarbeitet werden, beispielsweise als wässrigalkoholische Lösung. Diese weisen einen höheren Anteil an Vinylacetat-Monomeren auf. Ein beispielhaftes Copolymer weist ein Verhältnis von Vinylpyrrolidon-Monomereinheiten zu Vinylacetat-Monomereinheiten von etwa 50 : 50 auf.According to a further preferred embodiment of the detergent additive according to the invention, the PVP / VA copolymer has a ratio of vinylpyrrolidone monomer units to vinyl acetate monomer units of between about 80:20 and 20:80, in particular between about 70:30 and 30:70. From a technical point of view, powdery PVP / VA copolymers are preferably used. Such powdery PVP / VA copolymers preferably have a ratio of vinylpyrrolidone monomer units to vinyl acetate monomer units of between about 70:30 and 60:40. However, it is also possible to use PVP / VA copolymers which are processed in dissolved form, for example as an aqueous alcoholic solution. These have a higher proportion of vinyl acetate monomers on. An exemplary copolymer has a ratio of vinyl pyrrolidone monomer units to vinyl acetate monomer units of about 50:50.
Die PVP/VA-Comonomeren weisen bevorzugt eine Molmasse im Bereich von 100.000 bis 1.000.000 g/mol auf. Bevorzugte Bereiche für die Molmasse sind 300.00 - 900.000 g/mol sowie 500.000 bis 800.000 g/mol.The PVP / VA comonomers preferably have a molecular weight in the range of 100,000 to 1,000,000 g / mol. Preferred ranges for the molecular weight are 300.00 - 900,000 g / mol and 500,000 to 800,000 g / mol.
In einer weiteren Ausführungsform enthält das Waschmitteladditiv mindestens ein Carrageenan. Überraschenderweise wurde gefunden, dass das Carrageenan sowohl für sich genommen, als auch in Verbindung mit dem Tonmineral, dem Tensid und/oder dem PVP/VA Copolymer, den Weichgriff weiter verbessert.In another embodiment, the detergent additive contains at least one carrageenan. Surprisingly, it has been found that the carrageenan, both alone and in combination with the clay mineral, the surfactant and / or the PVP / VA copolymer, further improves the soft feel.
Carrageenane sind dem Fachmann als solche bekannt und es können alle geläufigen Carrageenane im Rahmen der vorliegenden Erfindung verwendet werden. Sie sind die Salze von linearen Galaktose-Polysacchariden (marinen Ursprungs).Carrageenans are known to the person skilled in the art and it is possible to use all known carrageenans in the context of the present invention. They are the salts of linear galactose polysaccharides (of marine origin).
Kommerziell bedeutungsvoll sind λ-Carrageenan, K-Carrageenan und L-Carrageenan. λ-Carrageenan ist ein Kettenmolekül, das aus dimeren Bausteinen, β-D-Galactosido(1,4)-α-D-Galactose, aufgebaut ist. Diese Dimere sind dabei 1,3-glycosidisch miteinander verknüpft. Die primäre Alkoholgruppe der α-D-Galactose ist mit Schwefelsäure verestert, und die Hydroxygruppen am C2 beider Galactosen sind ebenfalls zu etwa 70% mit Schwefelsäure verestert. λ-Carrageenan hat demnach einen Sulfat-Gehalt zwischen 32 und 39%. K- und L-Carrageenan sind aus dem Dimer Carrabiose aufgebaut, in welchem β-D-Galactose 1,4-glycosidisch an α-D-3,6-Anhydrogalactose gebunden ist. Diese Dimere sind durch 1,3-glycosidische Bindungen zu einem Kettenmolekül verknüpft. Der Unterschied zwischen den beiden Carrageenantypen liegt in der Sulfatierung. Beim K-Carrageenan befindet sich die Sulfatester-Gruppe am C-4 der Galactose, der Sulfat-Gehalt schwankt dabei zwischen 25 und 30%. Beim L-Carrageenan ist zusätzlich die Hydroxygruppe am C-2 der Anhydrogalactose mit Schwefelsäure verestert. Der Sulfat-Gehalt liegt zwischen 28 und 35 %. Das durchschnittliche Molekulargewicht von Carrageenan liegt zwischen 100.000 g/mol und 800.000 g/mol.Commercially significant are λ-carrageenan, K-carrageenan and L-carrageenan. λ-carrageenan is a chain molecule composed of dimeric building blocks, β-D-galactosido (1,4) -α-D-galactose. These dimers are linked 1,3-glycosidically. The primary alcohol group of α-D-galactose is esterified with sulfuric acid, and the hydroxy groups on C2 of both galactoses are also approximately 70% esterified with sulfuric acid. λ-carrageenan thus has a sulphate content between 32 and 39%. K- and L-carrageenans are composed of the dimer carrabiose in which β-D-galactose is 1,4-glycosidically bound to α-D-3,6-anhydrogalactose. These dimers are linked by 1,3-glycosidic bonds to form a chain molecule. The difference between the two carrageenan types lies in the sulfation. In K-carrageenan, the sulfate ester group is located at C-4 of galactose, the sulfate content fluctuates between 25 and 30%. In the case of L-carrageenan, the hydroxyl group on the C-2 of the anhydrogalactose is additionally esterified with sulfuric acid. The sulphate content is between 28 and 35%. The average molecular weight of carrageenan is between 100,000 g / mol and 800,000 g / mol.
Aufgrund ihrer Zulassung in Lebensmitteln (Carrageenan ist als E407 zugelassen) sind Carrageenane gesundheitlich und ökologisch unbedenkliche Zusatzstoffe.Because of their approval in food (carrageenan is approved as E407) carrageenans are health and ecologically harmless additives.
In einer bevorzugten Ausführungsform enthält das erfindungsgemäße Waschmitteladditiv mindestens ein Carrageenan mit einem Molekulargewicht von 50.000 g/mol bis 1.000.000 g/mol, weiter bevorzugt 100.000 g/mol bis 800.000 g/mol.In a preferred embodiment, the detergent additive according to the invention contains at least one carrageenan having a molecular weight of 50,000 g / mol to 1,000,000 g / mol, more preferably 100,000 g / mol to 800,000 g / mol.
In einer weiteren Ausführungsform enthält das Waschmitteladditiv mehr als 0,0001 Gew.-%, bevorzugt mehr als 0,001 Gew.-%, insbesondere bevorzugt mehr als 0,01 Gew.-% Carrageenan, bezogen auf die Masse des Tonminerals. Bei einem Zusatz von mehr als 0,1 Gew.-% wird meist keine weitere Verbesserung beobachtet, sodass ein höherer Anteil an Carrageenan unter wirtschaftlichen Gesichtspunkten nicht mehr bzw. allenfalls eingeschränkt sinnvoll ist. Meist ist ein Zusatz von bis zu 0,06 Gew.-% ausreichend, um die gewünschten Eigenschaften zu erhalten.In a further embodiment, the detergent additive contains more than 0.0001 wt .-%, preferably more than 0.001 wt .-%, particularly preferably more than 0.01 wt .-% carrageenan, based on the mass of the clay mineral. With an addition of more than 0.1 wt .-% usually no further improvement is observed, so that a higher proportion of carrageenan from an economic point of view is no longer or at best limited makes sense. In most cases an addition of up to 0.06 wt .-% is sufficient to obtain the desired properties.
Nach einer besonders bevorzugten erfindungsgemäßen Ausführungsform ist das smektische Tonmineral ein Bentonit. Wie beispielsweise in
Nach einem bevorzugten Aspekt der vorliegenden Erfindung wurde auch gefunden, dass die Teilchengröße des Tonminerals einen Einfluss auf die Verbesserung des Weichgriffs haben kann. So hat es sich als besonders vorteilhaft erwiesen, wenn das Tonmineral in Teilchenform vorliegt, wobei mindestens 10 Gew.-%, vorzugsweise mindestens 14 Gew.-%, weiter bevorzugt zwischen etwa 10 und 50 Gew.-% der Teilchen, weiter bevorzugt zwischen etwa 10 und 30 Gew.-% der Teilchen eine Teilchengröße von weniger als etwa 600 nm aufweisen. Die Bestimmung der Teilchengrößen kann nach Standardverfahren wie der Laserbeugungsmethode mit einem Fritsch Particle Sizer Analysette 22 Economy (Fa. Fritsch, DE) nach den Angaben des Herstellers, auch bezüglich der Probenvorbehandlung, erfolgen. Die Probe wird in deionisiertem Wasser ohne Zusatz von Hilfsmitteln homogenisiert und 5 Minuten mit Ultraschall behandelt. Nach einer alternativen Ausführungsform erfolgt die Teilchengrößenbestimmung wie in
Die vorstehenden bevorzugten Teilchengrößen des Tonminerals gelten nach einem alternativen Aspekt der vorliegenden Erfindung auch unabhängig von dem Einsatz des Tonminerals in einem Waschmittel bzw. Waschmitteladditiv in Kombination mit dem PVP/VA Copolymer, dem Tensid und/oder dem Carrageenan.The above preferred particle sizes of the clay mineral are according to an alternative aspect of the present invention also independent of the use of the clay mineral in a detergent or detergent additive in combination with the PVP / VA copolymer, the surfactant and / or the carrageenan.
In einer weiteren erfindungsgemäßen Ausführungsform liegt das Tonmineral, insbesondere der Bentonit, in aktivierter Form vor, d.h. zwischen den Schichten gelagerte zwei- oder dreiwertige Kationen werden gegen einwertige Ionen, wie Natriumionen oder Protonen, ausgetauscht. Derartige aktivierte Tonmineralien werden in an sich bekannter Weise, z.B. mit Soda, hergestellt. Durch den Austausch der Ionen erhöht sich die Quellfähigkeit des Bentonits, was wiederum die Absorptionseigenschaften beeinflusst.In a further embodiment of the invention, the clay mineral, especially the bentonite, is in activated form, i. Bi- or trivalent cations stored between the layers are exchanged for monovalent ions, such as sodium ions or protons. Such activated clay minerals are used in a manner known per se, e.g. made with soda. By exchanging the ions, the swelling capacity of the bentonite increases, which in turn influences the absorption properties.
Nach einer weiteren bevorzugten Ausführungsform ist das Tonmineral, insbesondere der Bentonit, dadurch gekennzeichnet, dass mindestens 50%, bevorzugt mindestens 60% und besonders bevorzugt mindestens 80% der Kationenaustauschkapazität (CEC) von einwertigen Kationen, wie beispielsweise Na+, K+ oder NH4 +, gebildet wird.According to a further preferred embodiment, the clay mineral, in particular the bentonite, is characterized in that at least 50%, preferably at least 60% and particularly preferably at least 80% of the cation exchange capacity (CEC) of monovalent cations, such as Na + , K + or NH 4 + , is formed.
Bevorzugt enthält das Waschmitteladditiv mindestens 80 Gew.-%, bevorzugt mindestens 85 Gew.-% Tonmineral, wie beispielsweise Bentonit. Der hohe Anteil an Tonmineral, wie z.B. Bentonit, senkt die Kosten des Waschmitteladditivs im Vergleich zum Tensid oder den weiteren polymeren Zusätzen. Zudem sind in vielen Fällen bei niedrigen Konzentrationen von Tensid und Polymer bzw. Copolymer keine chemikalienrechtlichen Einstufungen des Produkts erforderlich. Daraus resultieren niedrigere Kosten bei der Lagerung, dem Transport und der späteren Handhabung des Waschmitteladditivs. Die prozentualen Angaben beziehen sich auf ein Tonmineral, welches noch eine Restfeuchte von etwa 10 Gew.-% aufweist.Preferably, the detergent additive contains at least 80 wt .-%, preferably at least 85 wt .-% clay mineral, such as bentonite. The high proportion of clay mineral, such as bentonite, lowers the cost of the detergent additive compared to the surfactant or the other polymeric additives. In addition, at low concentrations of surfactant and polymer or copolymer, no chemical classifications of the product are required. This results in lower costs for storage, transport and later handling of the detergent additive. The percentage data refer to a clay mineral, which still has a residual moisture content of about 10 wt .-%.
Besonders bevorzugt ist das nichtionische Tensid des Waschmitteladditivs ausgewählt aus der Gruppe der Fettalkoholethoxylate und Polyethylenglycolether. Diese unterscheiden sich im Wesentlichen durch die Herstellungsverfahren. Beide Gruppen weisen einen gleichen Grundaufbau aus einer linearen oder verzweigten hydrophoben Kohlenwasserstoffkette (Cx) und einer hydrophilen Ethylenoxidkette (EOy) mit endständigen Alkoholgruppe(n) auf. Diese steuern sowohl die Effizienz, d.h. die notwendige Tensidmenge, als auch die Temperaturempfindlichkeit der Tensidklasse. Innerhalb der hydrophilen Ethylenoxidgruppe können zudem einzelne Ethylenoxideinheiten gegen Propylenoxideinheiten ausgetauscht sein. Die daraus resultierenden Änderungen des hydrophoben/hydrophilen Charakters können dabei gezielt bei der Auswahl der Tenside genutzt werden. Vor allem die Fettalkohlethoxylate können aus natürlichen Rohstoffen gewonnen werden und sind in der Regel nahezu vollständig biologisch abbaubar.The nonionic surfactant of the detergent additive is particularly preferably selected from the group of fatty alcohol ethoxylates and polyethylene glycol ethers. These differ essentially by the manufacturing process. Both groups have the same basic structure of a linear or branched hydrophobic hydrocarbon chain (C x ) and a hydrophilic ethylene oxide chain (EO y ) with terminal alcohol group (s). These control both the efficiency, ie the required amount of surfactant, and the temperature sensitivity of the surfactant class. Within the hydrophilic ethylene oxide group, moreover, individual ethylene oxide units can be exchanged for propylene oxide units. The resulting changes in the hydrophobic / hydrophilic character can be used specifically in the selection of surfactants. The fatty alcohol ethoxylates in particular can be obtained from natural raw materials and are generally almost completely biodegradable.
Insbesondere bevorzugt enthält das Waschmitteladditiv bezogen auf die Masse Tonmineral, mehr als 0,001 Gew.-%, besonders bevorzugt mehr als 0,01-Gew. %, insbesondere bevorzugt mehr als 0,01 Gew.-% Fettalkoholethoxylat und/oder Polyethylenglycolether. Bei einem Zusatz von mehr als 0,1 Gew.-% wird meist keine weitere Verbesserung beobachtet, sodass ein höherer Anteil an Fettalkoholethoxylat und/oder Polyethylenglycolether unter wirtschaftlichen Gesichtspunkten nicht mehr bzw. allenfalls eingeschränkt sinnvoll ist. Meist ist ein Zusatz von bis zu 0,06 Gew.-% ausreichend, um die gewünschten Eigenschaften zu erhalten.With particular preference the detergent additive contains, based on the mass, clay mineral, more than 0.001% by weight, particularly preferably more than 0.01% by weight. %, particularly preferably more than 0.01% by weight of fatty alcohol ethoxylate and / or polyethylene glycol ether. With an addition of more than 0.1 wt .-%, no further improvement is usually observed, so that a higher proportion of fatty alcohol ethoxylate and / or polyethylene glycol ether from an economic point of view is no longer or at best limited makes sense. In most cases an addition of up to 0.06 wt .-% is sufficient to obtain the desired properties.
Bevorzugt enthält das Waschmitteladditiv bezogen auf die Masse Tonmineral, mehr als 0,001 Gew.-%, besonders bevorzugt mehr als 0,01 Gew.-%, insbesondere bevorzugt mehr als 0,01 Gew.-% Polyvinylpyrrolidon-Polyvinylacetat (PVP/VA) Copolymer. Bei einem Zusatz von mehr als 0,1 Gew.-% wird meist keine weitere Verbesserung beobachtet, sodass ein höherer Anteil an Polyvinylpyrrolidon-Polyvinylacetat (PVP/VA) Copolymer unter wirtschaftlichen Gesichtspunkten nicht mehr bzw. allenfalls eingeschränkt sinnvoll ist. Meist ist ein Zusatz von bis zu 0,06 Gew.-% ausreichend, um die gewünschten Eigenschaften zu erhalten.Preferably, the detergent additive based on the mass of clay mineral, more than 0.001 wt .-%, more preferably more than 0.01 wt .-%, more preferably more than 0.01 wt .-% polyvinylpyrrolidone-polyvinyl acetate (PVP / VA) copolymer , With an addition of more than 0.1 wt .-% is usually no further improvement observed that a higher proportion of polyvinylpyrrolidone-polyvinyl acetate (PVP / VA) copolymer from an economic point of view is no longer or at best limited makes sense. In most cases an addition of up to 0.06 wt .-% is sufficient to obtain the desired properties.
Bevorzugt enthält das Waschmitteladditiv bezogen auf die Masse Tonmineral mehr als 0,05 Gew.-%, bevorzugt mehr als 0,5 Gew.-%, insbesondere bevorzugt mehr als 1 Gew.-% Wasserglas. Unter Wasserglas versteht man, (wie in
Ein weiterer Aspekt der Erfindung betrifft ein Verfahren zur Herstellung eines Waschmitteladditivs, umfassend mindestens die folgenden Schritte:
- a) Bereitstellen mindestens eines Tonminerals, insbesondere eines smektischen Tonminerals;
- b) Bereitstellen mindestens eines PVP-VA Copolymers;
- c) Mischen des mindestens einen PVP-VA Copolymers und des mindestens einen Tonminerals.
- a) providing at least one clay mineral, in particular a smectite clay mineral;
- b) providing at least one PVP-VA copolymer;
- c) mixing the at least one PVP-VA copolymer and the at least one clay mineral.
Bevorzugt umfasst das Verfahren zur Herstellung eines Waschmitteladditivs, dass vor, gleichzeitig mit oder nach Schritt c) mindestens ein Tensid, insbesondere ein nichtionisches Tensid, beigemischt wird. Dies kann zusammen mit dem PVP-VA Copolymer und dem Tonmineral bereitgestellt werden und mit diesen in der dem Fachmann geläufigen Weise vermischt werden.Preferably, the process for the preparation of a detergent additive comprises, before, simultaneously with or after step c), at least one surfactant, in particular a nonionic surfactant, being admixed. This may be provided together with the PVP-VA copolymer and the clay mineral and mixed therewith in the manner known to those skilled in the art.
Insbesondere bevorzugt wird das Tensid und/oder PVP-VA Copolymer in Form einer gemeinsamen oder getrennten wässrigen Lösung bereitgestellt. Neben Wasser eignen sich dabei auch polare organische Lösungsmittel, wie beispielsweise Methanol, Ethanol, Formamid, Dimethylformamid, Pyridin, Dimethylsulfoxid enthaltende Lösungen.Particularly preferably, the surfactant and / or PVP-VA copolymer is provided in the form of a common or separate aqueous solution. In addition to water, polar organic solvents, such as, for example, methanol, ethanol, formamide, dimethylformamide, pyridine, dimethylsulfoxide-containing solutions are also suitable.
Bevorzugt werden das Tensid und das PVP-VA Copolymer in einem ersten Schritt vermischt. Dies kann sowohl aus den Reinsubstanzen, als auch insbesondere bevorzugt aus wässrigen Lösungen des Tensids und des PVP-VA Copolymers erfolgen. Anschließend werden diese mit den dem Fachmann bekannten Methoden auf das Tonmineral aufgebracht. Die Aufbringung kann dabei durch Aufsprühen oder durch Vermischen in einem Mischer mit dem Tonmineral erfolgen. Zur intensiven Vermischung wird bevorzugt eine mechanische Wirbelschicht erzeugt. Dazu können allgemein die im Stand der Technik bekannten Intensivmischer in chargen(batch)-weisem oder kontinuierlichen Verfahren verwendet werden.Preferably, the surfactant and the PVP-VA copolymer are mixed in a first step. This can be done both from the pure substances, and particularly preferably from aqueous solutions of the surfactant and the PVP-VA copolymer. These are then applied to the clay mineral using methods known to those skilled in the art. The application can be done by spraying or by mixing in a mixer with the clay mineral. For intensive mixing, a mechanical fluidized bed is preferably produced. In general, the intensive mixers known from the prior art can be used in batchwise or continuous processes.
Weiterhin bevorzugt wird die Mischung aus PVP-VA Copolymer, Tensid und Tonmineral dann getrocknet und gegebenenfalls zu Granulat, Presslingen oder Tabletten geformt. Die Granulate werden nach der Vermischung (Nassgranulation) getrocknet und abgesiebt. Typischerweise werden durch Siebung entsprechende Teilchengrößen eingestellt, wie sie in der Waschmittelindustrie üblich sind, beispielsweise in einem Kornbandbereich zwischen 0,2 und 1,2 mm, 0,4 und 1,4 mm, 1,0 und 2,0 mm. Die Herstellung von Formkörpern, wie z.B. Presslingen oder Tabletten, kann mit dem den Fachmann bekannten Methoden und Zusätzen erfolgen. Beispiele für Zusätze sind Bindemittel, Überzüge (coatings) sowie Zusätze (z.B. Carbonate und Zitronensäure), die das Auflösen der Formkörper erleichtern.Further preferably, the mixture of PVP-VA copolymer, surfactant and clay mineral is then dried and optionally formed into granules, compacts or tablets. The granules are dried and sieved after mixing (wet granulation). Typically, by screening, appropriate particle sizes are set, as are common in the detergent industry, for example in a grain band range between 0.2 and 1.2 mm, 0.4 and 1.4 mm, 1.0 and 2.0 mm. The production of shaped articles, such as e.g. Pressings or tablets can be carried out by the methods and additives known to those skilled in the art. Examples of additives are binders, coatings and additives (e.g., carbonates and citric acid) which facilitate dissolution of the molded articles.
In einer bevorzugten Ausführungsform umfasst das Verfahren zur Herstellung des Waschmitteladditivs den Zusatz von Carrageenan wie hierin beschrieben. Dieses kann in einer separaten wässrigen Lösung zugegeben werden oder in einer gemeinsamen Lösung mit Tensid und PVP-VA Copolymer mit dem Tonmineral vermischt werden. Durch den Zusatz von Carrageenan wird dabei der Weichgriff überraschenderweise weiter verbessert.In a preferred embodiment, the method of making the detergent additive comprises adding carrageenan as described herein. This can be added in a separate aqueous solution or mixed in a common solution with surfactant and PVP-VA copolymer with the clay mineral. The addition of carrageenan while the softness is surprisingly further improved.
In einer weiteren bevorzugten Ausführungsform umfasst das Verfahren zur Herstellung des Waschmitteladditivs die Zugabe von Wasserglas, insbesondere in Form einer wässrigen Lösung. Dabei wird z.B. eine Wasserglaslösung (Feststoffgehalt bevorzugt ca. 34 - 36%) beispielsweise des Moduls 3,2 verwendet (Modul = Verhältnis SiO2 : Na2O). Bevorzugte Bereiche des Moduls sind bereits weiter oben angegeben worden. Diese Lösung kann weiter verdünnt werden und beispielsweise im Verhältnis 2-3:1 mit Wasser vermischt und dann im erfindungsgemäßen Verfahren eingesetzt werden. Es ist jedoch auch möglich, festes Wasserglas zu verwenden. Die Verwendung von Wasserglas verbessert dabei das Lösen des fertigen Granulats und verhindert somit eine Flockenbildung, welche eine gleichmäßige Verteilung des Tongranulats auf der Textilfaser erschwert.In a further preferred embodiment, the process for the preparation of the detergent additive comprises the addition of water glass, in particular in the form of an aqueous solution. In this case, for example, a water glass solution (solids content preferably about 34-36%), for example of the module 3.2 used (modulus = SiO 2 ratio: Na 2 O). Preferred regions of the module have already been specified above. This solution can be further diluted and mixed, for example, in a ratio of 2-3: 1 with water and then used in the process according to the invention. However, it is also possible to use solid water glass. The use of water glass thereby improves the dissolution of the finished granules and thus prevents flocculation, which impedes a uniform distribution of the clay granules on the textile fiber.
Nach einem weiteren Aspekt der vorliegenden Erfindung wird das hierin beschriebene Waschmitteladditiv zur Verbesserung des Weichgriffs verwendet. Dabei eignet sich das Waschmitteladditiv auch als separater Weichspüler sowohl in fester, z.B. granularer, als auch in flüssiger Form. Neben der Verbesserung des Weichgriffs erhöhen die Komponenten, wie beispielsweise das (nichtionische) Tensid oder auch das Tonmineral, das Lösen der Schmutzpartikel und die Stabilisierung derselbigen in der Waschflotte.In another aspect of the present invention, the laundry additive described herein is used to improve the softening. The detergent additive is also suitable as a separate softener both in solid, e.g. granular, as well as in liquid form. In addition to improving the soft feel, the components, such as the (nonionic) surfactant or the clay mineral, increase the release of the soil particles and the stabilization of the same in the wash liquor.
In einer bevorzugten Ausführungsform wird das Waschmitteladditiv als Komponente von flüssigen oder festen Wasch-, Reinigungs- und Pflegemitteln verwendet, wobei sich die vorstehenden Vorteile zeigen. Dies reduziert den Waschmittelverbrauch und senkt die Kosten für den Endverbraucher und vereinfacht den Waschprozess. Es können alle herkömmlichen Wasch-, Reinigungs- und Pflegemittel verwendet werden, wie beispielsweise Textilwaschmittel, Geschirr- und Handspülmittel, Handseifen, Fleckenentferner, Bleichmittel, Duschgele, Shampoos, Body Lotions, Cremes, Reinigungs- und Pflegemittel für z.B. Kraftfahrzeuge, Schiffe und Flugzeuge, sowie zur Oberflächenbehandlung oder Imprägnierung.In a preferred embodiment, the detergent additive is used as a component of liquid or solid detergents, cleaners and conditioners, with the foregoing advantages. This reduces the consumption of detergent and reduces the costs for the end user and simplifies the washing process. All conventional washing, cleaning and care products can be used, such as, for example, laundry detergents, dishwashing detergents and dishwashing detergents, hand soaps, stain removers, bleaches, shower gels, shampoos, body lotions, creams, cleansing preparations. and care products for eg motor vehicles, ships and aircraft, as well as for surface treatment or impregnation.
Ein weiterer Aspekt der Erfindung betrifft die Verwendung des erfindungsgemäßen Waschmitteladditivs zur Verbesserung des Weichgriffs und/oder der Farbtonerhaltung von Stoffen und/oder Textilien (textiler Materialien), insbesondere ausgewählt aus der Gruppe von Baumwolle, Seide, Schafswolle, Polyester, Polyamid, Elastan®, Nylon®, Viskose, insbesondere von baumwollhaltigen Stoffen.Another aspect of the invention relates to the use of the detergent additive of the invention to improve the softness and / or hue preservation of substances and / or textiles (textile materials), in particular selected from the group consisting of cotton, silk, wool, polyester, polyamide, elastane ®, Nylon ® , viscose, especially of cotton-containing fabrics.
Noch ein weiterer Aspekt der Erfindung betrifft die Verwendung von mindestens einem Carrageenan in einem Waschmitteladditiv und/oder einer Wasch-, Reinigungs- oder Pflegemittelzusammensetzung, insbesondere zur Verbesserung des Weichgriffs und/oder der Farbtonerhaltung von textilen Materialien bzw. Stoffen.Yet another aspect of the invention relates to the use of at least one carrageenan in a detergent additive and / or a laundry, cleaning or care composition, in particular for improving the soft feel and / or the color retention of textile materials.
Die Erfindung wird im Weiteren unter Bezugnahme auf die verwendeten Test- und Untersuchungsmethoden, Beispiele und Figuren näher erläutert. Diese dienen nur zur Veranschaulichung und beschränken die Erfindung dabei in keiner Weise.
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zeigt die Ergebnisse aus Waschversuchen zum Weichgriffindex bei Verwendung eines erfindungsgemäßen Waschmitteladditivs;Figur 1 -
Figur 2 zeigt den Einfluss verschiedener Waschmitteladditive auf den Weichgriffindex. -
zeigt den Einfluss eines erfindungsgemäßen Waschmitteladditivs (mit PVP/VA Copolymer) und eines Vergleichs-Waschmitteladditivs (mit PVP/VI Copolymer) auf den Weichgriffindex.Figur 3 -
Figur 4 zeigt die Abhängigkeit der Weichgriffverbesserung verschiedener erfindungsgemäßer Waschmitteladditive vom Anteil der VA-Monomereinheiten im PVP/VA Copolymer.
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FIG. 1 shows the results of washing tests for Weichgriffindex when using a detergent additive according to the invention; -
FIG. 2 shows the influence of various detergent additives on the Weichgriffindex. -
FIG. 3 shows the influence of a detergent additive according to the invention (with PVP / VA copolymer) and a comparison detergent additive (with PVP / VI copolymer) on the soft handle index. -
FIG. 4 shows the dependence of the soft handle improvement of various inventive detergent additives on the proportion of VA monomer units in the PVP / VA copolymer.
Für die folgenden Waschversuche wurde ein Standard-Testwaschmittel verwendet. Dazu wurde das Testwaschmittel IEC 60456, das von dem Wfk-Forschungsinstitut für Reinigungstechnologie e. V. bezogen wurde, verwendet. Die Zusammensetzung dieses Testwaschmittels ist in der Tabelle 1 dargestellt. Die Komponenten Natriumperborat-Tetrahydrat und Tetraacetylethylendiamin waren kein Bestandteil des Testwaschmittels und wurden vor der Dosierung mit dem Testwaschmittel vermischt. Diese Komponenten wurden ebenfalls vom Wfk-Forschungsinstitut für Reinigungstechnologie e. V. bezogen. Die Angaben über die Massenkonzentration dieser Komponenten im Testwaschmittel sind ebenfalls in Tabelle 1 angegeben.
Für die Waschversuche wurden handelsübliche Handtücher der Fa. Frottana-Textil GmbH & Co. KG, Qualität: 4264 g/m2, Größe: 50x100 cm verwendet. Es wurden immer je 8 Handtücher in einer Waschmaschine gewaschen. Als Referenz dienten Handtücher, die nur mit Testwaschmittel gewaschen worden waren. In jeder Waschreihe wurde zur Analyse auch Baumwolltestgewebe mitgewaschen. Pro Waschgang wurde 90 g Testwaschmittel inklusive Natriumperborat-Tetrahydrat und Tetraacetylethylendiamin und 10 g des Waschmitteladditivs verwendet (die Zusammensetzung der Additivgranulate ist bei den entsprechenden Beispielen der Waschversuche aufgeführt). Alle Waschversuche wurden mit Waschmaschinen von BOSCH, Typ WFG 2460, Waschprogramm "Baumwolle, 60°C" durchgeführt. Die Wasserhärte betrug 21° DH. Dies entspricht einem Ca2+-Gehalt von 3,7 mmol/l. Die Handtücher wurden in einem abgeschlossenen Raum bei Raumtemperatur an Luft getrocknet.Commercially available towels of the company Frottana-Textil GmbH & Co. KG were used for the washing tests, quality: 4264 g / m 2 , size: 50x100 cm used. There were always ever 8 towels in a washing machine washed. As a reference towels were used, which had been washed only with test detergent. In each wash series, cotton test fabric was also washed for analysis. Per wash, 90 g of test detergent including sodium perborate tetrahydrate and tetraacetylethylenediamine and 10 g of the detergent additive were used (the composition of the additive granules is shown in the corresponding examples of the washing experiments). All washing tests were carried out with washing machines from BOSCH, type WFG 2460, washing program "Cotton, 60 ° C". The water hardness was 21 ° DH. This corresponds to a Ca 2+ content of 3.7 mmol / l. The towels were air dried in a sealed room at room temperature.
Beim Weichgrifftest beurteilen je 15 Personen durch Greifen und Fühlen mit der Hand, welche Handtücher im Vergleich untereinander weicher bzw. härter sind. Dabei wurde darauf geachtet, dass jeweils eine bestimmte Fläche oder Teil des Tuches nur ein Mal von einer Person gegriffen wird. Wenn man z. B. jeweils acht Handtücher, die mit dem Testwaschmittel und dem Waschmitteladditiv mit der gleichen Zahl an Handtüchern, die nur mit Testwaschmittel gewaschen wurden, vergleicht, wird jedes Handtuch an unterschiedlichen Stellen zwei Mal beurteilt (Doppelbestimmung). Auf einer Bewertungsskala kann jedes Handtuch max. 30 Punkte erreichen. Die Punktezahl wird dann in Prozenten bzw. als Weichgriffindex (0 Punkte entsprechen 0% und 30 Punkte ergeben 100%) ausgedrückt. Der prozentuale Anteil bzw. Weichgriffindex bedeutet, dass in z. B. 50% der Fälle (wenn die Punktezahl 15 betrug) die entsprechende Probe für weicher befunden wurde als die Referenzprobe.In the soft-grip test, 15 people each judge by gripping and feeling with their hands which towels are softer or harder in comparison with each other. Care was taken to ensure that only a certain area or part of the cloth is grasped by a person only once. If you z. For example, eight towels each, which were compared with the test detergent and detergent additive with the same number of towels washed only with test detergent, each towel is evaluated twice at different locations (duplicate). On a rating scale, each towel can be max. Reach 30 points. The score is then expressed as a percentage or as a soft grip index (0 points equals 0% and 30 points equals 100%). The percentage or Weichgriffindex means that in z. For example, 50% of the cases (when the score was 15) found the corresponding sample softer than the reference sample.
Für die Bestimmung des Veraschungsrückstandes wurden ca. 5 g Probenmaterial (des gewaschenen Handtuches oder des gewaschenen Testgewebes) im Porzellantiegel eingewogen, verascht und dann für 60 Minuten im Ofen bei 850°C geglüht. Nach Erkalten im Exsikkator wurden die Proben gewogen und die Gewebeasche in Gewichtsprozent des eingewogenen Gewebes berechnet. Zum Vergleich wurden auch Proben verascht, die gar nicht und nur mit Testwaschmittel gewaschen worden waren. Aus der Differenz der Veraschungsrückstände der Proben, die mit entsprechenden Additiven bzw. Granulaten und der Proben, welche nur mit Testwaschmittel gewaschen worden waren, wurde der "Netto-Veraschungsrückstand" ermittelt.For the determination of the ashing residue, approximately 5 g of sample material (the washed towel or the washed test fabric) was weighed into the porcelain crucible, ashed and then calcined in the oven at 850 ° C. for 60 minutes. After cooling in the desiccator, the samples were weighed and the tissue washes were calculated in weight percent of the tissue weighed. For comparison, samples were also ashed, which were not washed at all and only with test detergent. From the difference of the ashing residues of the samples, with corresponding additives or granules and the samples, which were washed only with test detergent, the "net ashing residue" was determined.
Prinzip: Der Ton (beispielsweise Bentonit) wird mit einem großen Überschuss an wässriger NH4-Cl-Lösung behandelt, ausgewaschen und die auf dem Ton verbliebene NH4 +-Menge nach Kjeldahl bestimmt.
Me+ (Ton)-+ NH4 + - NH4 +(Ton)-+Me+
(Me+ = H+, K+, Na+, 1/2 Ca2+, 1/2 Mg2+....)
Principle: The clay (eg bentonite) is treated with a large excess of aqueous NH 4 -Cl solution, washed out and the amount of NH 4 + remaining on the clay determined according to Kjeldahl.
Me + (clay) - + NH 4 + - NH 4 + (clay) - + Me +
(Me + = H + , K + , Na + , 1/2 Ca 2+ , 1/2 Mg 2+ ....)
Geräte: Sieb, 63 µm; Erlenmeyer-Schliffkolben, 300 ml; Analysenwaage; Membranfilternutsche, 400 ml; Cellulose-Nitrat-Filter, 0,15 µm (Fa. Sartorius); Trockenschrank; Rückflusskühler; Heizplatte; Destillationseinheit, VAPODEST-5 (Fa. Gerhardt, No. 6550); Messkolben, 250 ml; Flammen-AAS (FAAS) Chemikalien: 2N NH4Cl-Lösung Neßlers-Reagenz (Fa. Merck, Art.Nr. 9028); Borsäure-Lösung, 2%-ig; Natronlauge, 32%-ig; 0,1 N Salzsäure; NaCl-Lösung, 0, %-ig; KCl-Lösung, 0,1%-igEquipment: sieve, 63 μm; Erlenmeyer grinding flasks, 300 ml; Analytical balance; Membrane filter chute, 400 ml; Cellulose nitrate filter, 0.15 μm (Sartorius); Drying oven; Reflux condenser; hot plate; Distillation unit, VAPODEST-5 (Gerhardt, No. 6550); Volumetric flask, 250 ml; Flame AAS (FAAS) Chemicals: 2N NH 4 Cl solution Nessler's reagent (Merck, item No. 9028); Boric acid solution, 2%; Caustic soda, 32%; 0.1 N hydrochloric acid; NaCl solution, 0,% -ig; KCl solution, 0.1%
Durchführung: 5 g Ton werden durch ein 63 µm-Sieb gesiebt und bei 110 °C getrocknet. Danach werden genau 2 g auf der Analysenwaage in Differenzwägung in den Erlenmeyer-Schliffkolben eingewogen und mit 100 ml 2N NH4Cl-Lösung versetzt. Die Suspension wird unter Rückfluss eine Stunde lang gekocht. Bei stark CaCO3- haltigen Tonen kann es zu einer Ammoniak-Entwicklung kommen. In diesem Fall muss solange NH4Cl-Lösung zugegeben werden, bis kein Ammoniak-Geruch mehr wahrzunehmen ist. Eine zusätzliche Kontrolle kann mit einem feuchten Indikator-Papier durchgeführt werden. Nach einer Standzeit von ca. 16 h wird der NH4 +-Ton über eine Membranfilternutsche abfiltriert und bis zur weitgehenden Ionenfreiheit mit entionisiertem Wasser (ca. 800 ml) gewaschen. Der Nachweis der Ionenfreiheit des Waschwassers wird auf NH4 +-Ionen mit dem dafür empfindlichen Neßlers-Reagenz durchgeführt. Die Waschzahl kann je nach Tonsorte zwischen 30 Minuten und 3 Tagen variieren. Der ausgewaschene NH4 +-Ton wird vom Filter abgenommen, bei 110°C 2h lang getrocknet, gemahlen, gesiebt (63 µm-Sieb) und nochmals bei 110°C 2h lang getrocknet. Danach wird der NH4 +-Gehalt des Tons nach Kjeldahl bestimmt.Procedure: 5 g of clay are sieved through a 63 μm sieve and dried at 110 ° C. Then weigh exactly 2 g on the analytical balance in differential weighing into the Erlenmeyer grinding flask and add 100 ml of 2N NH 4 Cl solution. The suspension is boiled under reflux for one hour. In the case of strongly CaCO 3 -containing clays, ammonia development can occur. In this case, as long as NH 4 Cl solution must be added until no ammonia smell is perceived. Additional control can be done with a wet indicator paper. After a standing time of about 16 h, the NH 4 + clay is filtered through a membrane filter and washed until the substantial freedom from ion with deionized water (about 800 ml). The proof of the ionic freedom of the wash water is carried out on NH 4 + ions with the sensitive Nessler's reagent. The washing rate may vary between 30 minutes and 3 days depending on the type of clay. The washed out NH 4 + clay is removed from the filter, dried at 110 ° C for 2 hours, ground, sieved (63 micron sieve) and dried again at 110 ° C for 2 hours. Thereafter, the NH 4 + content of the clay is determined according to Kjeldahl.
Berechnung der CEC: Die CEC des Tons ist der mittels Kjeldahl ermittelte NH4 +-Gehalt des NH4 +-Tons (CEC einiger Tonmineralien s. Anlage). Die Angaben erfolgen in meq/100 g Ton.Calculation of the CEC: The CEC of the clay is the Kjeldahl NH 4 + content of the NH 4 + clay (CEC of some clay minerals, see Appendix). The data are given in meq / 100 g clay.
Molekulargewicht: N = 14,0067 g/mol
CEC = 66,4 meq/100 g NH4 +-TonMolecular weight: N = 14.0067 g / mol
CEC = 66.4 meq / 100 g NH 4 + clay
Die durch den Umtausch freigesetzten Kationen befinden sich im Waschwasser (Filtrat). Der Anteil und die Art der einwertigen Kationen ("austauschbare Kationen") wurde im Filtrat gemäß DIN 38406, Teil 22, spektroskopisch bestimmt. Beispielsweise wird zur AAS-Bestimmung das Waschwasser (Filtrat) eingeengt, in einen 250 ml Messkolben überführt und mit entionisiertem Wasser bis zur Messmarke aufgefüllt. Geeignete Messbedingungen für FAAS sind aus den nachfolgenden Tabellen zu entnehmen.
Molmassen (g/mol): Ca=20,040; K=39,096; Li=6,94; Mg=12,156; Na=22,990; Al=8,994; Fe=18,616
Molar masses (g / mol): Ca = 20.040; K = 39.096; Li = 6.94; Mg = 12.156; Na = 22.990; Al = 8.994; Fe = 18.616
Bei so genannten überaktivierten Tonen, d.h. solchen, die mit einer größeren als der stöchiometrischen Menge an z.B. Soda aktiviert wurden, kann die Summe der ermittelten Mengen an einwertigen Kationen die wie vorstehend angegeben bestimmte CEC übertreffen. In solchen Fällen wird der Gesamtgehalt an einwertigen Kationen (Li, K, Na) als 100% der CEC angesehen.In the case of so-called overactivated clays, ie those which have been activated with a greater than stoichiometric amount of, for example, soda, the sum of the determined amounts of monovalent cations can exceed the CEC determined as indicated above. In such cases, the total monovalent cation content (Li, K, Na) is considered to be 100% of the CEC.
Der Methylenblauwert ist ein Maß für die innere Oberfläche der Tonmaterialien.The methylene blue value is a measure of the inner surface of the clay materials.
5,41 g Tetranatriumdiphosphat werden auf 0,001 g genau in einen 1000 ml Messkolben eingewogen und unter Schütteln bis zur Eichmarke mit dest. Wasser aufgefüllt.5.41 g tetrasodium diphosphate are weighed to 0.001 g exactly in a 1000 ml volumetric flask and shaking to the mark with dist. Water filled up.
In einem 2000 ml Becherglas werden 125 g Methylenblau in ca. 1500 ml dest. Wasser gelöst. Die Lösung wird abdekantiert und auf 25 1 mit dest. Wasser aufgefüllt.In a 2000 ml beaker, 125 g of methylene blue in about 1500 ml dest. Water dissolved. The solution is decanted off and distilled to 25 l with dist. Water filled up.
0,5 g feuchter Testbentonit mit bekannter innerer Oberfläche werden in einem Erlenmeyerkolben auf 0,001 g genau eingewogen. Es werden 50 ml Tetranatriumdiphosphatlösung zugegeben und die Mischung 5 Minuten zum Sieden erhitzt. Nach dem Abkühlen auf Raumtemperatur werden 10 ml 0,5 molare H2SO4 zugegeben und 80 bis 95 % des zu erwartenden Endverbrauchs an Methylenblaulösung zugegeben. Mit dem Glasstab wird ein Tropfen der Suspension aufgenommen und auf ein Filterpapier gegeben. Es bildet sich ein blau-schwarzer Fleck mit einem farblosen Hof. Es wird nun in Portionen von 1 ml weitere Methylenblaulösung zugegeben und die Tüpfelprobe wiederholt. Die Zugabe erfolgt solange, bis sich der Hof leicht hellblau färbt, also die zugegebene Methylenblaumenge nicht mehr vom Testbentonit absorbiert wird.0.5 g of wet test bentonite with a known internal surface are weighed to the nearest 0.001 g in an Erlenmeyer flask. Add 50 ml of tetrasodium diphosphate solution and heat the mixture to boiling for 5 minutes. After cooling to room temperature, 10 ml of 0.5 molar H 2 SO 4 are added and 80 to 95% of the expected final consumption of methylene blue solution is added. With the glass rod, a drop of the suspension is taken and placed on a filter paper. It forms a blue-black spot with a colorless yard. It is then added in portions of 1 ml more Methylenblaulösung and repeated the dot sample. The addition takes place until the yard turns slightly light blue, so that the added Methylenblaumenge is no longer absorbed by the test bentonite.
Die Prüfung des Tonmaterials wird in der gleichen Weise durchgeführt wie für den Testbentonit. Aus der verbrauchten Menge an Methylenblaulösung lässt sich die innere Oberfläche des Tonmaterials berechnen.The test of the clay material is carried out in the same way as for the test bentonite. From the used amount of methylene blue solution, the inner surface of the clay material can be calculated.
381 mg Methylenblau/g Ton entsprechen nach diesem Verfahren einem Gehalt von 100 % Montmorillonit.381 mg methylene blue / g clay correspond to a content of 100% montmorillonite according to this method.
Das bereitgestellte Tonmineral (die verwendeten Tonminerale sind in Tabelle 4 beschrieben) wird mit einer wässrigen Lösung des Tensids und des PVP/VA Copolymers vermischt. Zuerst wurden dazu folgende Lösungen 1 und 2 vorbereitet:The clay mineral provided (the clay minerals used are described in Table 4) is mixed with an aqueous solution of the surfactant and the PVP / VA copolymer. First, the following
Lösung 1: In 250 ml einer Mischung aus Wasserglas (Silicate de Soude 38/40, Type 16 N 34, Fa. Brenntag S.A., Chassieu, FR) und Wasser im Verhältnis 2:1 wurde 0,1 g Carrageenan gelöst (Satiagel™ ME4, Molekulargewicht 100000 - 800000, Degussa Testurant Systems GmbH & Co. KG, Hamburg, DE). Zu dieser Lösung wurden 1,5 ml einer 5%-igen C12-C14-alkohol Polyethylenglycolether (EO)7 (Marlipal 24/70, Sasol & Surfactants, Marl, DE) - Lösung zugegeben.Solution 1: In 250 ml of a mixture of water glass (Silicate de Soude 38/40, Type 16 N 34, Brenntag SA, Chassieu, FR) and water in a ratio of 2: 1, 0.1 g of carrageenan was dissolved (Satiagel ™ ME4 , Molecular weight 100,000-800,000, Degussa Testurant Systems GmbH & Co. KG, Hamburg, DE). To this solution was added 1.5 ml of a 5% C 12 -C 14 alcohol polyethylene glycol ether (EO) 7 (Marlipal 24/70, Sasol & Surfactants, Marl, DE) solution.
Lösung 2: In 1 L destilliertem Wasser wurde 2,5 g PVP/VA Copolymer (PVP/VA S-630, ISP Global Technologies, Texas City, US) aufgelöst.Solution 2: In 1 L of distilled water was dissolved 2.5 g of PVP / VA copolymer (PVP / VA S-630, ISP Global Technologies, Texas City, US).
In einem Mischer (DiTO-SAMA, F 23200 AUBUSSON, Made in France) wurden anschließend 500 g Ton 1 (Tabelle 4) vorgelegt und mit 72 g Lösung 1 und 36 g Lösung 2 granuliert. Das Granulat wurde dann auf einen Restwassergehalt von 10-15 % getrocknet, durch ein Sieb von 0,4-1,4 mm gesiebt und so in den Waschversuchen eingesetzt.
**Bestimmung mit Methylenblau-Methode
** Determination with methylene blue method
Im Vergleich zur Probe W0 mit dem reinen Testwaschmittel wird der Weichgriff sowohl mit der Probe W3 als auch mit der Probe W10 um den Faktor 2-3 erhöht. Beide Proben enthalten ein aktiviertes Tonmineral. Eine Verbesserung des Weichgriffs lässt sich jedoch auch mit einem nicht aktivierten Tonmineral erzielen. Der Weichgriff kann dabei im Vergleich zum Testwaschmittel um etwa 50% gesteigert werden (nicht dargestellt).Compared to the sample W0 with the pure test detergent, the softening with both the sample W3 and the sample W10 is increased by a factor of 2-3. Both samples contain an activated clay mineral. However, an improvement of the soft touch can also be achieved with a non-activated clay mineral. The soft touch can be increased by about 50% compared to the test detergent (not shown).
Zusätzlich wurde in dieser Untersuchungsreihe festgestellt, dass überraschenderweise die Probe B17 (mit allen erfindungsgemäßen Komponenten) in etwa den gleichen Veraschungsrückstand aufweist (nicht dargestellt), wie ein Waschmitteladditiv, dass nur das Tonmineral enthält. Jedoch ist der Weichgriffindex der erfindungsgemäßen Probe B17 im Vergleich zum Waschmitteladditiv aus reinem Tonmineral wesentlich verbessert.In addition, it has been found in this series of tests that, surprisingly, Sample B17 (with all the components according to the invention) has approximately the same ashing residue (not shown), such as a detergent additive containing only the clay mineral. However, the soft handle index of the inventive sample B17 is substantially improved compared to the detergent additive of pure clay mineral.
Dieser Effekt lässt sich auch anhand von lichtmikroskopischen Aufnahmen bestätigen (nicht dargestellt), wobei Testgewebe, die einerseits mit einem Waschmitteladditiv, nur enthaltend Bentonit, und andererseits mit einem erfindungsgemäßen Waschmitteladditiv gemäß Probe B17 behandelt wurden, zunächst mit Methylenblau eingefärbt wurden. Dadurch lassen sich bei Betrachtung unter dem Lichtmikroskop (100x Vergr.) die eingefärbten Bentonitpartikel auf den Testgeweben sichtbar machen. Es zeigt sich, dass die Menge der auf den Testgeweben befindlichen Tonpartikel bei einem Vergleich der mit den Proben B17 bzw. dem reinen Tonmineral behandelten Testgeweben in etwa gleich ist. Insoweit ist der gemäß
In einem weiteren Versuch wurde die Wirkung bei erfindungsgemäßer Verwendung des PVP/VA Copolymers (Zusammensetzung entsprechend Probe B17, siehe oben) mit der Wirkung bei Verwendung eines PVP/VI (Vinylimidazol) Copolymers (Zusammensetzung entsprechend Probe B17, nur PVP/VA Copolymer durch PVP/VI Copolymer ersetzt) verglichen. Die Ergebnisse der Weichgriff-Tests (wie vorstehend beschrieben durchgeführt) sind in
In einem weiteren Versuch wurde die Wirkung bei erfindungsgemäßer Verwendung unterschiedlicher PVP/VA Copolymere mit verschiedenem Anteil an VA-Monomereinheiten bzw. Verhältnis VP-Monomereinheiten zu VA-Monomereinheiten (Zusammensetzung ansonsten entsprechend Probe B17, siehe oben) verglichen. Dabei wurden folgende PVP/VA Copolymere eingesetzt:
Die Ergebnisse der Weichgriff-Tests (wie vorstehend beschrieben durchgeführt) sind in
Es wurden 14 farbige Prüftextilien (Standard-Baumwollgewebe) mit a) der Testwaschmittelzusammensetzung gemäß Tabelle 1 und b) mit der Testwaschmittelzusammensetzung gemäß Tabelle 1 unter Zusatz von 3 % des wie vorstehend vor Tabelle 4 mit Ton 1 hergestellten erfindungsgemäßen Additivs, jedoch mit 3-fachem Gehalt an PVP/VA Copolymer bei 60°C 5 Mal gewaschen. Die farbigen Prüftextilien würden dann nach der 5. Wäsche nach ISO 105-A05 auf die Farbtonerhaltung überprüft.There were 14 colored test fabrics (standard cotton fabric) with a) the test detergent composition according to Table 1 and b) with the test detergent composition according to Table 1 with the addition of 3% of the inventive additive prepared before Table 4 with
Dabei zeigte sich, dass bei Verwendung des erfindungsgemäßen Waschmitteladditivs eine signifikant bessere Farbtonerhaltung bereitstellt wird. So lag die Farbtonänderung auf einer Skala von 1 (sehr starke Farbtonänderung) bis 5 (keine nennenswerte Farbtonänderung bei Versuch a), d.h. ohne das erfindungsgemäße Waschmitteladditiv bei 4,3, während mit dem erfindungsgemäßen Waschmitteladditiv ein Wert von 4,4 erreicht werden konnte. Die angegebenen Werte betreffen Mittelwerte aus 14 Abschnitten der Prüftextilien und sind statistisch signifikant.It was found that when using the detergent additive according to the invention significantly better color retention is provided. Thus, the color change was on a scale of 1 (very strong color change) to 5 (not worth mentioning Color change in experiment a), ie without the inventive detergent additive at 4.3, while with the detergent additive according to the invention a value of 4.4 could be achieved. The values given concern average values from 14 sections of the test textiles and are statistically significant.
Claims (15)
- Detergent additive for improving the softness of textile products, containing at least the following components:a) a clay mineral;b) a PVP/VA copolymer.
- Detergent additive according to claim 1, characterized in that the detergent additive contains a surfactant, in particular a non-ionic surfactant, preferably selected from the group which is formed by fatty alcohol ethoxylates and polyethylene glycol ether.
- Detergent additive according to one of the previous claims, characterized in that the clay mineral is a smectic clay mineral, in particular a bentonite.
- Detergent additive according to one of the previous claims, characterized in that the PVP/VA copolymer has a level of vinyl pyrrolidone monomer units of approximately 1 to 99%.
- Detergent additive according to one of the previous claims, characterized in that the PVP/VA copolymer has a proportion of vinyl acetate monomer units of at least approximately 20%, preferably at least 30%, and preferably of not more than approximately 90%, in particular not more than 80%, further preferably not more than 75%.
- Detergent additive according to one of the previous claims, characterized in that the PVP/VA copolymer has a ratio of vinyl pyrrolidone monomer units to vinyl acetate monomer units of between approximately 80:20 and 20:80, in particular between approximately 70:30 and 30:70, relative to the total quantity of vinyl pyrrolidone monomer units and vinyl acetate monomer units.
- Detergent additive according to one of the previous claims, characterized in that, in addition to the vinyl pyrrolidone monomer units and the vinyl acetate monomer units, the PVP/VA copolymer also contains one or more other monomer units.
- Detergent additive according to one of the previous claims, characterized in that the detergent additive contains at least one carrageenan, in particular a carrageenan with a molecular weight of from 50,000 g/mol to 1,000,000 g/mol, preferably 100,000 g/mol to 800,000 g/mol.
- Detergent additive according to claim 8, characterized in that the detergent additive, relative to the mass of clay mineral, contains more than 0.0001 wt.-%, preferably more than 0.001 wt.- %, carrageenan.
- Detergent additive according to one of the previous claims, characterized in that- the clay mineral is present in particle form, wherein at least 10 wt.-%, preferably at least 14 wt.-%, further preferably between approximately 10 and 50 wt.-% of the particles, further preferably between approximately 10 and 30 wt.-% of the particles have a particle size of less than approximately 600 nm; and/or- the clay mineral, in particular the bentonite, is activated, in particular preferably activated with soda; and/or- at least 50% of the cation exchange capacity (CEC), preferably at least 60% and particularly preferably at least 80% of the clay mineral, in particular bentonite, is formed by monovalent cations; and/or- the detergent additive contains at least 80 wt.-%, preferably at least 85 wt.-% clay mineral, in particular bentonite.
- Detergent additive according to one of the previous claims, characterized in that- the detergent additive contains, relative to the mass of clay mineral, more than 0.001 wt.-%, preferably more than 0.01 wt.-%, fatty alcohol ethoxylate and/or polyethylene glycol ether; and/or- the detergent additive contains, relative to the mass of clay mineral, more than 0.001 wt.-%, preferably more than 0.01 wt.-%, PVP/VA copolymer; and/or- the detergent additive contains, relative to the mass of clay mineral, more than 0.05 wt.-%, preferably more than 0.5 wt.-%, water glass.
- Method for producing the detergent additive, comprising at least the following steps:a) providing at least one clay mineral, in particular a smectic clay mineral;b) providing at least one PVP/VA copolymer;c) mixing the at least one PVP/VA copolymer and the at least one clay mineral,
wherein at least one surfactant, in particular a non-ionic surfactant, is preferably added either before, at the same time as or after step c). - Method according to claim 12, characterized in that the surfactant and/or PVP/VA copolymer is provided in the form of aqueous solution.
- Method according to claim 12 or 13, characterized in that- PVP/VA copolymer and surfactant are mixed first and then applied to the clay mineral; and/or- the mixture of PVP/VA copolymer, surfactant and clay mineral is dried and optionally shaped into granules, compacts or tablets; and/or- carrageenan is added; and/or- water glass is added.
- Use of the detergent additive according to one of claims 1 to 11 or produced according to one of claims 12 to 14 as component of a washing, cleaning and/or care formulation, in particular for improving softness.
Priority Applications (2)
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EP07801918A EP2057257B1 (en) | 2006-08-28 | 2007-08-27 | Laundry detergent additive based on clay minerals and pvp-containing copolymers |
PL07801918T PL2057257T3 (en) | 2006-08-28 | 2007-08-27 | Laundry detergent additive based on clay minerals and pvp-containing copolymers |
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EP06017916A EP1894993A1 (en) | 2006-08-28 | 2006-08-28 | Detergent additive based on clay minerals and copolymers containing PVP |
EP07801918A EP2057257B1 (en) | 2006-08-28 | 2007-08-27 | Laundry detergent additive based on clay minerals and pvp-containing copolymers |
PCT/EP2007/007494 WO2008025505A1 (en) | 2006-08-28 | 2007-08-27 | Laundry detergent additive based on clay minerals and pvp-containing copolymers |
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EP2057257B1 true EP2057257B1 (en) | 2012-11-21 |
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DE102008050360A1 (en) | 2008-10-02 | 2010-04-08 | Süd-Chemie AG | Detergent additive based on clay minerals, as well as its use and process for its preparation |
ITUA20164581A1 (en) * | 2016-06-22 | 2017-12-22 | Manteco S P A | Method of removing contaminants from fabrics |
DE102016213568A1 (en) * | 2016-07-25 | 2018-01-25 | Henkel Ag & Co. Kgaa | Polymers of vinylpyrrolidone and / or vinyl acetate as textilpflegende ingredients |
CH713397A1 (en) * | 2017-01-31 | 2018-07-31 | Bonyf Ag | Method for removing milk residues and composition of a cleaning tablet or a cleaning powder. |
Citations (1)
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DE3711299A1 (en) * | 1987-04-03 | 1988-10-13 | Basf Ag | Use of graft polymers based on polyvinylpyrrolidone as greying inhibitors in the washing and aftertreatment of textile material containing manmade fibres |
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ZA734721B (en) | 1972-07-14 | 1974-03-27 | Procter & Gamble | Detergent compositions |
DE3437721A1 (en) * | 1984-10-15 | 1986-04-17 | Süd-Chemie AG, 8000 München | DETERGENT ADDITIVE |
GB8607388D0 (en) * | 1986-03-25 | 1986-04-30 | Unilever Plc | Activator compositions |
DE3887020T2 (en) | 1987-07-14 | 1994-06-09 | Procter & Gamble | Detergent compositions. |
DE3881329T3 (en) * | 1987-10-19 | 2002-05-23 | The Procter & Gamble Company, Cincinnati | Cleaning supplies. |
JPH01153799A (en) * | 1987-12-11 | 1989-06-15 | Lion Corp | Additive for granular detergent |
DE3943019A1 (en) * | 1989-12-27 | 1991-07-04 | Henkel Kgaa | GRANULAR, AVIVATING ACTIVITY OF DETERGENT ADDITIVE AND METHOD FOR THE PRODUCTION THEREOF |
DE4306665A1 (en) * | 1993-03-03 | 1994-09-08 | Sued Chemie Ag | Detergent additive for fabric softening detergents |
DE69327654T2 (en) * | 1993-11-11 | 2000-08-31 | The Procter & Gamble Company, Cincinnati | Softening compositions during washing |
MX9704137A (en) * | 1994-12-07 | 1997-09-30 | Novo Nordisk As | Polypeptide with reduced allergenicity. |
DE69431561T2 (en) * | 1994-12-29 | 2003-08-07 | The Procter & Gamble Company, Cincinnati | Detergent compositions softening during washing |
ATE246722T1 (en) * | 1997-09-17 | 2003-08-15 | Ciba Sc Holding Ag | ANTIMICROBIAL DETERGENT ADDITIVE |
GB2348434A (en) * | 1999-04-01 | 2000-10-04 | Procter & Gamble | Detergent compositions |
GB2352245A (en) * | 1999-07-22 | 2001-01-24 | Procter & Gamble | Detergent compositions |
DE10044472A1 (en) * | 2000-09-08 | 2002-03-21 | Cognis Deutschland Gmbh | laundry detergent |
EP1561802B1 (en) | 2004-02-03 | 2008-08-20 | The Procter & Gamble Company | A composition for use in the laundering or treatment of fabrics |
JP4481138B2 (en) * | 2004-10-08 | 2010-06-16 | 花王株式会社 | Liquid detergent composition |
JP2006160889A (en) * | 2004-12-07 | 2006-06-22 | Kao Corp | Soft detergent composition |
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2006
- 2006-08-28 EP EP06017916A patent/EP1894993A1/en not_active Withdrawn
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2007
- 2007-08-27 JP JP2009525963A patent/JP5260522B2/en not_active Expired - Fee Related
- 2007-08-27 MX MX2009001921A patent/MX2009001921A/en active IP Right Grant
- 2007-08-27 BR BRPI0716412-2A2A patent/BRPI0716412A2/en not_active IP Right Cessation
- 2007-08-27 ES ES07801918T patent/ES2399832T3/en active Active
- 2007-08-27 PT PT78019189T patent/PT2057257E/en unknown
- 2007-08-27 WO PCT/EP2007/007494 patent/WO2008025505A1/en active Application Filing
- 2007-08-27 EP EP07801918A patent/EP2057257B1/en not_active Not-in-force
- 2007-08-27 PL PL07801918T patent/PL2057257T3/en unknown
Patent Citations (1)
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DE3711299A1 (en) * | 1987-04-03 | 1988-10-13 | Basf Ag | Use of graft polymers based on polyvinylpyrrolidone as greying inhibitors in the washing and aftertreatment of textile material containing manmade fibres |
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Retrieved from the Internet <URL:http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=61699&loc=ec_rcs> * |
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Also Published As
Publication number | Publication date |
---|---|
JP5260522B2 (en) | 2013-08-14 |
EP1894993A1 (en) | 2008-03-05 |
BRPI0716412A2 (en) | 2013-09-24 |
ES2399832T3 (en) | 2013-04-03 |
JP2010501686A (en) | 2010-01-21 |
EP2057257A1 (en) | 2009-05-13 |
PT2057257E (en) | 2013-02-19 |
WO2008025505A1 (en) | 2008-03-06 |
MX2009001921A (en) | 2009-03-09 |
PL2057257T3 (en) | 2013-09-30 |
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