WO2021250599A1 - Cleaning product and related synthesis process - Google Patents
Cleaning product and related synthesis process Download PDFInfo
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- WO2021250599A1 WO2021250599A1 PCT/IB2021/055094 IB2021055094W WO2021250599A1 WO 2021250599 A1 WO2021250599 A1 WO 2021250599A1 IB 2021055094 W IB2021055094 W IB 2021055094W WO 2021250599 A1 WO2021250599 A1 WO 2021250599A1
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- Prior art keywords
- cleaning product
- weight
- present
- amount
- product according
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Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 title abstract description 9
- 238000003786 synthesis reaction Methods 0.000 title abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 239000004094 surface-active agent Substances 0.000 claims description 25
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- 239000002736 nonionic surfactant Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002738 chelating agent Substances 0.000 claims description 12
- 229940071160 cocoate Drugs 0.000 claims description 11
- 229940013608 glycereth-6 Drugs 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- -1 polyoxyethylene Polymers 0.000 claims description 11
- 239000005456 alcohol based solvent Substances 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 239000002280 amphoteric surfactant Substances 0.000 claims description 10
- 239000001509 sodium citrate Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 239000007853 buffer solution Substances 0.000 claims description 7
- UZVUJVFQFNHRSY-OUTKXMMCSA-J tetrasodium;(2s)-2-[bis(carboxylatomethyl)amino]pentanedioate Chemical group [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC[C@@H](C([O-])=O)N(CC([O-])=O)CC([O-])=O UZVUJVFQFNHRSY-OUTKXMMCSA-J 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 5
- 229940038773 trisodium citrate Drugs 0.000 claims description 5
- MFKRHJVUCZRDTF-UHFFFAOYSA-N 3-methoxy-3-methylbutan-1-ol Chemical group COC(C)(C)CCO MFKRHJVUCZRDTF-UHFFFAOYSA-N 0.000 claims description 4
- 239000003945 anionic surfactant Substances 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 150000002191 fatty alcohols Chemical class 0.000 claims description 4
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000002304 perfume Substances 0.000 claims description 3
- 229920001282 polysaccharide Polymers 0.000 claims description 3
- 239000005017 polysaccharide Substances 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 3
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 3
- GAWWVVGZMLGEIW-GNNYBVKZSA-L zinc ricinoleate Chemical compound [Zn+2].CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O.CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O GAWWVVGZMLGEIW-GNNYBVKZSA-L 0.000 claims description 3
- 229940100530 zinc ricinoleate Drugs 0.000 claims description 3
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 1
- 229960002989 glutamic acid Drugs 0.000 claims 1
- 239000004220 glutamic acid Substances 0.000 claims 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 239000005445 natural material Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 11
- 239000000693 micelle Substances 0.000 description 9
- 230000008901 benefit Effects 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000002296 dynamic light scattering Methods 0.000 description 4
- 239000003352 sequestering agent Substances 0.000 description 4
- 239000000344 soap Substances 0.000 description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 238000004851 dishwashing Methods 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 235000011167 hydrochloric acid Nutrition 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N malic acid Chemical compound OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000011118 potassium hydroxide Nutrition 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- XPFJYKARVSSRHE-UHFFFAOYSA-K trisodium;2-hydroxypropane-1,2,3-tricarboxylate;2-hydroxypropane-1,2,3-tricarboxylic acid Chemical compound [Na+].[Na+].[Na+].OC(=O)CC(O)(C(O)=O)CC(O)=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O XPFJYKARVSSRHE-UHFFFAOYSA-K 0.000 description 2
- VCVKIIDXVWEWSZ-YFKPBYRVSA-N (2s)-2-[bis(carboxymethyl)amino]pentanedioic acid Chemical compound OC(=O)CC[C@@H](C(O)=O)N(CC(O)=O)CC(O)=O VCVKIIDXVWEWSZ-YFKPBYRVSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 229920006184 cellulose methylcellulose Polymers 0.000 description 1
- 239000011153 ceramic matrix composite Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000012710 chemistry, manufacturing and control Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002979 fabric softener Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002535 lyotropic effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229940049920 malate Drugs 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/825—Mixtures of compounds all of which are non-ionic
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/88—Ampholytes; Electroneutral compounds
- C11D1/94—Mixtures with anionic, cationic or non-ionic compounds
-
- 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
- C11D11/00—Special methods for preparing compositions containing mixtures of detergents
- C11D11/0094—Process for making liquid detergent compositions, e.g. slurries, pastes or gels
-
- 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
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
-
- 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
- C11D3/43—Solvents
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/662—Carbohydrates or derivatives
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/74—Carboxylates or sulfonates esters of polyoxyalkylene glycols
-
- 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
- C11D3/2068—Ethers
Definitions
- the present invention relates to a cleaning product, characterized by a nanometric micellar composition.
- the present invention refers to a cleaning product based on natural substances, which is therefore ecological, easily biodegradable and allows its use in safe conditions for the user. Even more particularly, the present invention relates to a very effective cleaning product in removing any type of dirt from any type of surface.
- the present invention also relates to the synthesis process of said cleaning product.
- the chemical process of saponification carried out in order to break down fatty molecules is known from the state of the art, using basic chemical substances, i.e. hydroxides of alkali metals such as NaOH or KOH, which react with the glycerides in aqueous solution, hydrolyzing them.
- the salt (sodium or potassium) of the aliphatic fatty acid, i.e. the soap, and the glycerol are obtained from the saponification reaction.
- Soap is a molecule characterized by an amphipathic structure, i.e. by a hydrophobic tail and a negatively ionized hydrophilic head, which allows dirt to be removed by lowering the surface tension between washing water and fat molecule.
- the soap molecules come into contact with water and dirt, they arrange themselves circularly in a "micelle" shape, with the hydrophobic tails facing inwards and the hydrophilic heads facing outwards. This special arrangement allows the tails to trap the dirt inside them, which is emulsified and dragged away by washing water.
- Soaps are therefore salts of fatty acids with at least 12 carbon atoms that act as surfactants.
- a surfactant is an amphipathic molecule, therefore characterized by a nonpolar tail and a polar head, or vice versa, which in solution, once the critical micellar concentration has been reached, arranges itself together with other surfactant molecules in such a way as to form micelles.
- the surfactants are effective against dirt, as they act by lowering the surface tension between the fat molecules and water, thus increasing the wettability of the fat molecules, facilitating their removal together with washing water.
- surfactants can be anionic, non-ionic, cationic or amphoteric.
- Anionic surfactants have a negative electrostatic charge and are mainly used in laundry products, hand dishwashing and household cleaning products. They have a high foaming power and a high cleaning power on all types of dirt. Compounds such as alkylbenzenesulphonates, alkylsuifates, alkylethoxysulphates and alcoholethoxysulphates belong to this class.
- Non-ionic surfactants have no electrostatic charge, and for this reason, they are less toxic to humans. They are used above all in laundry products, for washing dishes in the machine and in washing aids: they remove most types of dirt with a particularly strong action on greasy dirt. Compounds such as ethoxylated alcohols and alkylamine oxides belong to this class.
- Cationic surfactants have a positive electrostatic charge and have been used mainly in fabric softeners, but also in other laundry detergents.
- quaternary ammonium salts belong to this class.
- amphoteric surfactants are able to take a different electrostatic charge depending on the type of solution in which they are found, and are mainly used in dish cleaning products.
- Betaines and alkylamino- oxides belong to this class.
- micellar structures depends on the physico-chemical properties of the system, such as temperature, pH and concentration.
- the surfactants initially arrange themselves so as to form basically spherical micelles.
- the latter as the surfactant concentration increases, can evolve into rod-like or disk-like structures.
- a further increase in concentration can lead to the formation of lyotropic liquid crystalline phases, with the formation of hexagonal or lamellar micelles.
- the structure of the supramolecular aggregates generated in solution can be predicted by introducing the "critical packing parameter (cpp) ", which depends on the size of the head and tail of the used surfactant.
- sequestering agents which have the function of sequestering calcium and magnesium cations in order to reduce the hardness of water. These ingredients also have the function of promoting the performance of surfactants, helping to retain dirt in solution.
- surfactants Among the "historical" components widely used for this purpose are polyphosphates.
- the object of the present invention is to obviate the aforementioned drawbacks and in particular, to provide a cleaning product that is based on natural substances, and therefore ecological, easily biodegradable, and whose use does not involve risks for the safety and health of the user.
- a further object of the present invention is to provide a cleaning product of practical use, which guarantees high efficiency in removing any type of dirt from any surface, reducing cleaning times.
- Another object of the present invention is to provide a synthesis process of said cleaning product.
- the present invention therefore relates to a cleaning product characterized by a nanometric micellar composition, said cleaning product comprising:
- a first non-ionic surfactant present in an amount by weight of between 3.2% and 9.2%;
- - at least a second non-ionic surfactant present in an amount by weight of between 0.2% and 2.2%
- - at least one chelating agent present in an amount by weight comprised between 2.2% to 4.5%
- the detergent product according to the present invention also comprises at least one buffer system in order to stabilize the pH in a range between 8 and 12, preferably between 9 and 11.
- said at least one buffer system comprises trisodium citrate and citric acid, in which the trisodium citrate is present in an amount by weight comprised between 1% and 6.5%, preferably 3%, while the citric acid is present in an amount by weight between 0.45% and 2.2%, preferably 1.2%, these percentage values being referred to the total weight of the composition.
- trisodium citrate - citric acid examples include fumarate - fumaric acid, malate - malic acid, tartarate - tartaric acid.
- the trisodium citrate as well as other salts of organic acids that can be used to buffer the pH of the mixture, confers a double advantage in that it also acts as a chelating agent.
- said first non-ionic surfactant comprises one or more esters of the polyoxyethylene glycolic fatty acid, preferably Glycereth-6 Cocoate, even more preferably said first non-ionic surfactant is present in an amount by weight of 6.2% with respect to the total weight of the composition.
- said at least one second non-ionic surfactant is selected from an ethoxylated fatty alcohol RO(CH 2 CH 2 O) 7 H, in which R is a C12-C18 alkyl group, and/or a heptyl polyglucoside, in which said at least a second non-ionic surfactant is preferably present in an amount by weight of 0.7% with respect to the total weight of the composition.
- the detergent product according to the invention therefore comprises at least one chelating agent, or sequestering agent, preferably GLDA (tetrasodium salt of N, N-dicarboxymethyl-glutamic acid), even more preferably said at least one chelating agent is present in an amount by weight of 3.4% with respect to the total weight of the composition.
- GLDA tetrasodium salt of N, N-dicarboxymethyl-glutamic acid
- a chelating agent is a chemical compound capable of forming complexes with ions or atoms, sequestrating them.
- GLDA has the advantage of being extremely effective in the chelation of calcium and magnesium, in such a way as to reduce water hardness and avoid limestone deposits, and at the same time, it is a product of natural origin, biodegradable and eco- sustainable.
- the cleaning product according to the present invention comprises at least one alcohol-based solvent, preferably 3-methoxy-3-methyl-l-butanol, even more preferably said at least one alcohol-based solvent is present in an amount by weight of 17.5% with respect to the total weight of the composition.
- the cleaning product according to the invention further comprises one or more amphoteric surfactants, preferably dipotassium 2- ethylhexyl dipropionate salt, even more preferably said one or more amphoteric surfactants are present in an amount by weight comprised between 0.14% and 1.54%, preferably 0.63%, with respect to the total weight of the composition.
- amphoteric surfactants preferably dipotassium 2- ethylhexyl dipropionate salt, even more preferably said one or more amphoteric surfactants are present in an amount by weight comprised between 0.14% and 1.54%, preferably 0.63%, with respect to the total weight of the composition.
- the cleaning product according to the present invention has the advantage of being very versatile and can be used in various fields of cleaning, subjecting said product to dilution with water and the addition of specific components according to the field of application.
- the final products obtained have the advantage of being environmentally friendly, easily biodegradable and extremely safe for the user: they do not produce vapors; they are not corrosive to the skin and can therefore be used without the use of protections such as masks and glasses.
- said cleaning product according to the invention can be applied for the cleaning of surfaces such as fabrics, grills, leather sofas, clothes, car rims, glass, furniture, dishwashers, etc.
- Additives that can be used depending on the application for which the finished product is intended are, for example, odor suppressants (e.g. zinc ricinoleate), perfumes, solvents, co-solvents, anionic surfactants (e.g. sodium lauryl sulfate, alkyl polysaccharides), preservatives, amphoteric surfactants (e.g. alkylbetaine).
- a further object of the present invention is the production process of said cleaning product according to claim 1, said process comprising the following steps: a) pouring demineralized water in a mixer in an amount by weight comprised between 20% and 50%, preferably between 30% and 40% by weight, based on the total weight of the composition; b) adding at least one chelating agent and at least one alcohol-based solvent and mixing; c) adding a first non-ionic surfactant and mixing; d) adding at least a second non-ionic surfactant different from said first surfactant and mixing; e) adding demineralized water up to 100 and mixing, said steps being conducted not necessarily in the order described.
- said at least one chelating agent is GLDA
- said at least one alcohol-based solvent is 3- methoxy-3-methyl-l-butanol
- said first non-ionic surfactant is Glycereth-6 Cocoate
- said at least one second non-ionic surfactant is selected from an ethoxylated fatty alcohol RO(CH 2 CH 2 O) 7 H, wherein R is a C12-C18 alkyl group, and/or a heptyl polyglucoside.
- said process for the production of the cleaning product according to the invention further comprises a step f) which involves the addition of at least one buffer system, for example the trisodium citrate - citric acid buffer system.
- a further embodiment provides a step g) which involves the addition of one or more amphoteric surfactants, for example dipotassium 2-ethylhexyl dipropionate salt.
- the production process of the cleaning product according to the present invention can comprise a step h) which involves the addition of one or more additives selected from odor suppressants (preferably zinc ricinoleate), perfumes, solvents, co solvents , anionic surfactants (preferably sodium lauryl sulfate, alkyl polysaccharides), preservatives, amphoteric surfactants (preferably alkyl betaine). Said process is preferably carried out at room temperature.
- odor suppressants preferably zinc ricinoleate
- perfumes preferably zinc ricinoleate
- solvents preferably co solvents
- anionic surfactants preferably sodium lauryl sulfate, alkyl polysaccharides
- preservatives preferably alkyl betaine
- step b) of said process is conducted for 10 minutes, while step c) is conducted for at least 15 minutes and step e) is conducted for 25-30 minutes.
- Said process offers the advantage of generating a cleaning product characterized by a nanometric micellar composition in which the micelles have a particular flattened shape.
- This feature is advantageous compared to the traditional spherical shape because in the flattened micelle the contact area between the micelle and the fat molecule is greater; therefore, the surface tension is further reduced while the wettability of the fat molecule increases: this allows obtaining a greater efficiency in terms of cleaning performance.
- EXAMPLE 1 composition and process according to the invention
- Table 1 shows an illustrative and non-limiting example of the components of a composition according to the invention, together with the relative quantities, trade names and corresponding suppliers.
- Table 1 shows an illustrative and non-limiting example of the components of a composition according to the invention, together with the relative quantities, trade names and corresponding suppliers.
- demineralized water is added, always stirring, until the desired level is reached (e.g. 100 liters) .
- the mixer runs for 25-30 minutes.
- Table 2 reports the chemical-physical features of the cleaning product according to the invention, as well as its ecological properties and the estimate of toxicity .
- the cleaning product according to the present invention is extremely environmentally friendly and its use is safe for the health of the user.
- the tensiometer measurements returned CMC values equal to 1.57% by weight for the LEVENOL F200 and two values equal to 0.27% and 1.23% by weight for the DEHYDOL LT-7.
- the anomalous behavior of the double CMC suggests a structural change in the arrangement of the molecules, from a spherical shape to an ellipsoidal or rod-like shape.
- the mixture of both surfactants has CMC values equal to 0.28% and 1.60% by weight, which leads to the conclusion that the mixture has a nanometric micellar structure at concentrations higher than the aforementioned CMC.
- the critical micellar concentration (CMC) of a sample of the surfactant Glycereth-6 Cocoate was first determined by carrying out surface tension measurements with the Du Nouy ring method, using a solution of distilled water, sodium citrate 3.5 % by weight and 0.5% by weight citric acid.
- the CMC of Glycereth-6 Cocoate is around 1.57% ⁇ 0.08 w/w.
- the Dynamic Light Scattering (DLS) technique was used to verify the formation of aggregates once the CMC is reached and thus determine their size.
- a 3% by weight of Glycereth-6 Cocoate sample was analyzed using a solvent consisting of a solution of distilled water, 3.5% by weight sodium citrate and 0.5% by weight citric acid.
- the DLS analysis of the sample shows the presence of a single population of aggregates in solution having a hydrodynamic radius of about 11 nm.
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Abstract
The present invention relates to a cleaning product characterized by a nanometric micellar composition. In particular, the present invention refers to a cleaning product based on natural substances, which is therefore ecological, easily biodegradable and which allows its use in safe conditions for the user. Even more particularly, the present invention relates to a very effective cleaning product in removing any type of dirt from any type of surface. The present invention also relates to the synthesis process of said cleaning product.
Description
CLEANING PRODUCT AND RELATED SYNTHESIS PROCESS
The present invention relates to a cleaning product, characterized by a nanometric micellar composition.
In particular, the present invention refers to a cleaning product based on natural substances, which is therefore ecological, easily biodegradable and allows its use in safe conditions for the user. Even more particularly, the present invention relates to a very effective cleaning product in removing any type of dirt from any type of surface.
The present invention also relates to the synthesis process of said cleaning product. The chemical process of saponification carried out in order to break down fatty molecules is known from the state of the art, using basic chemical substances, i.e. hydroxides of alkali metals such as NaOH or KOH, which react with the glycerides in aqueous solution, hydrolyzing them. The salt (sodium or potassium) of the aliphatic fatty acid, i.e. the soap, and the glycerol are obtained from the saponification reaction.
Soap is a molecule characterized by an amphipathic structure, i.e. by a hydrophobic tail and a negatively ionized hydrophilic head, which allows dirt to be removed by lowering the surface tension between washing water and fat molecule. When the soap molecules come into contact with water and dirt, they arrange themselves circularly in a "micelle" shape, with the hydrophobic tails facing inwards and the hydrophilic heads facing outwards. This special arrangement allows
the tails to trap the dirt inside them, which is emulsified and dragged away by washing water. Soaps are therefore salts of fatty acids with at least 12 carbon atoms that act as surfactants.
A surfactant is an amphipathic molecule, therefore characterized by a nonpolar tail and a polar head, or vice versa, which in solution, once the critical micellar concentration has been reached, arranges itself together with other surfactant molecules in such a way as to form micelles. The surfactants are effective against dirt, as they act by lowering the surface tension between the fat molecules and water, thus increasing the wettability of the fat molecules, facilitating their removal together with washing water. Based on the possessed electrostatic charge, surfactants can be anionic, non-ionic, cationic or amphoteric.
Anionic surfactants have a negative electrostatic charge and are mainly used in laundry products, hand dishwashing and household cleaning products. They have a high foaming power and a high cleaning power on all types of dirt. Compounds such as alkylbenzenesulphonates, alkylsuifates, alkylethoxysulphates and alcoholethoxysulphates belong to this class.
Non-ionic surfactants have no electrostatic charge, and for this reason, they are less toxic to humans. They are used above all in laundry products, for washing dishes in the machine and in washing aids: they remove most types of dirt with a particularly strong action on greasy dirt. Compounds such as
ethoxylated alcohols and alkylamine oxides belong to this class.
Cationic surfactants have a positive electrostatic charge and have been used mainly in fabric softeners, but also in other laundry detergents. For example, quaternary ammonium salts belong to this class.
Finally, amphoteric surfactants are able to take a different electrostatic charge depending on the type of solution in which they are found, and are mainly used in dish cleaning products. Betaines and alkylamino- oxides belong to this class.
It is known that the shape of micellar structures depends on the physico-chemical properties of the system, such as temperature, pH and concentration.
Once the critical micellar concentration is reached, the surfactants initially arrange themselves so as to form basically spherical micelles. The latter, as the surfactant concentration increases, can evolve into rod-like or disk-like structures. A further increase in concentration can lead to the formation of lyotropic liquid crystalline phases, with the formation of hexagonal or lamellar micelles. Through simple geometric considerations, the structure of the supramolecular aggregates generated in solution can be predicted by introducing the "critical packing parameter (cpp) ", which depends on the size of the head and tail of the used surfactant.
The functional properties of an aqueous mixture of surfactants are determined by the microstructure of the mixture itself, therefore it is clear that the prediction of the favored micelle shape under certain
conditions is extremely useful.
Different types of chemical products used in the cleaning field are known in the state of the art, which often involve the use of various types of surfactants, in addition to the use of other components, among which, especially in products used as degreasers, often are present some compounds having the purpose of making the mixture basic, for example caustic soda, caustic potash, sodium hypochlorite, ammonia, etc.
Other cleaning products on the market, especially those with anti-limescale and descaling power, contain corrosive acids such as hydrochloric acid, sulfuric acid, muriatic acid, phosphoric acid, etc.
Furthermore, it is customary in various commercial products to use sequestering agents, which have the function of sequestering calcium and magnesium cations in order to reduce the hardness of water. These ingredients also have the function of promoting the performance of surfactants, helping to retain dirt in solution. Among the "historical" components widely used for this purpose are polyphosphates.
Following episodes of abnormal growth of algae (eutrophication) in the Adriatic Sea which occurred in the 1970s, the use of these ingredients was severely limited and replaced with other sequestering agents, such as EDTA (ethylenediaminetetraacetic acid). This sequestering agent is able to form a very stable chelate with calcium and magnesium, and is in fact used to avoid the formation and deposit of limestone. However, due to its poor biodegradability, the use of EDTA has been banned in many EU countries.
In the state of the art, therefore, there remains the need to find a cleaning product that is versatile in all areas of cleaning, and that uses substances that are not harmful to the health and the environment.
The object of the present invention is to obviate the aforementioned drawbacks and in particular, to provide a cleaning product that is based on natural substances, and therefore ecological, easily biodegradable, and whose use does not involve risks for the safety and health of the user.
A further object of the present invention is to provide a cleaning product of practical use, which guarantees high efficiency in removing any type of dirt from any surface, reducing cleaning times.
Another object of the present invention is to provide a synthesis process of said cleaning product.
These and other objects according to the present invention are achieved by making a cleaning product as set forth in claim 1.
Further features of the cleaning product are the subject of the dependent claims.
The features and advantages of the cleaning product according to the present invention will become more apparent from the following description.
The present invention therefore relates to a cleaning product characterized by a nanometric micellar composition, said cleaning product comprising:
- a first non-ionic surfactant, present in an amount by weight of between 3.2% and 9.2%;
- at least a second non-ionic surfactant, present in an amount by weight of between 0.2% and 2.2%;
- at least one chelating agent, present in an amount by weight comprised between 2.2% to 4.5%;
- at least one alcohol-based solvent, present in an amount by weight comprised between 12% and 23%;
- water, present in an amount up to 100% by weight, said quantities by weight being referred to the total weight of the composition.
In a preferred and advantageous embodiment, the detergent product according to the present invention also comprises at least one buffer system in order to stabilize the pH in a range between 8 and 12, preferably between 9 and 11.
Preferably, said at least one buffer system comprises trisodium citrate and citric acid, in which the trisodium citrate is present in an amount by weight comprised between 1% and 6.5%, preferably 3%, while the citric acid is present in an amount by weight between 0.45% and 2.2%, preferably 1.2%, these percentage values being referred to the total weight of the composition.
Examples of other types of buffer systems that can be used in place of or in combination with said system trisodium citrate - citric acid are: fumarate - fumaric acid, malate - malic acid, tartarate - tartaric acid.
Furthermore, the trisodium citrate, as well as other salts of organic acids that can be used to buffer the pH of the mixture, confers a double advantage in that it also acts as a chelating agent.
In a preferred embodiment, said first non-ionic surfactant comprises one or more esters of the
polyoxyethylene glycolic fatty acid, preferably Glycereth-6 Cocoate, even more preferably said first non-ionic surfactant is present in an amount by weight of 6.2% with respect to the total weight of the composition.
In a further preferred embodiment, said at least one second non-ionic surfactant is selected from an ethoxylated fatty alcohol RO(CH2CH2O)7H, in which R is a C12-C18 alkyl group, and/or a heptyl polyglucoside, in which said at least a second non-ionic surfactant is preferably present in an amount by weight of 0.7% with respect to the total weight of the composition.
The detergent product according to the invention therefore comprises at least one chelating agent, or sequestering agent, preferably GLDA (tetrasodium salt of N, N-dicarboxymethyl-glutamic acid), even more preferably said at least one chelating agent is present in an amount by weight of 3.4% with respect to the total weight of the composition.
A chelating agent is a chemical compound capable of forming complexes with ions or atoms, sequestrating them. GLDA has the advantage of being extremely effective in the chelation of calcium and magnesium, in such a way as to reduce water hardness and avoid limestone deposits, and at the same time, it is a product of natural origin, biodegradable and eco- sustainable.
Furthermore, the cleaning product according to the present invention comprises at least one alcohol-based solvent, preferably 3-methoxy-3-methyl-l-butanol, even more preferably said at least one alcohol-based solvent
is present in an amount by weight of 17.5% with respect to the total weight of the composition.
In a further embodiment, the cleaning product according to the invention further comprises one or more amphoteric surfactants, preferably dipotassium 2- ethylhexyl dipropionate salt, even more preferably said one or more amphoteric surfactants are present in an amount by weight comprised between 0.14% and 1.54%, preferably 0.63%, with respect to the total weight of the composition.
The cleaning product according to the present invention has the advantage of being very versatile and can be used in various fields of cleaning, subjecting said product to dilution with water and the addition of specific components according to the field of application. The final products obtained have the advantage of being environmentally friendly, easily biodegradable and extremely safe for the user: they do not produce vapors; they are not corrosive to the skin and can therefore be used without the use of protections such as masks and glasses.
In particular, the use of said cleaning product according to the invention can be applied for the cleaning of surfaces such as fabrics, grills, leather sofas, clothes, car rims, glass, furniture, dishwashers, etc.
Additives that can be used depending on the application for which the finished product is intended are, for example, odor suppressants (e.g. zinc ricinoleate), perfumes, solvents, co-solvents, anionic surfactants (e.g. sodium lauryl sulfate, alkyl
polysaccharides), preservatives, amphoteric surfactants (e.g. alkylbetaine).
A further object of the present invention is the production process of said cleaning product according to claim 1, said process comprising the following steps: a) pouring demineralized water in a mixer in an amount by weight comprised between 20% and 50%, preferably between 30% and 40% by weight, based on the total weight of the composition; b) adding at least one chelating agent and at least one alcohol-based solvent and mixing; c) adding a first non-ionic surfactant and mixing; d) adding at least a second non-ionic surfactant different from said first surfactant and mixing; e) adding demineralized water up to 100 and mixing, said steps being conducted not necessarily in the order described.
Preferably, said at least one chelating agent is GLDA, said at least one alcohol-based solvent is 3- methoxy-3-methyl-l-butanol , said first non-ionic surfactant is Glycereth-6 Cocoate, and said at least one second non-ionic surfactant is selected from an ethoxylated fatty alcohol RO(CH2CH2O)7H, wherein R is a C12-C18 alkyl group, and/or a heptyl polyglucoside.
In a preferred embodiment, said process for the production of the cleaning product according to the invention further comprises a step f) which involves the addition of at least one buffer system, for example the trisodium citrate - citric acid buffer system.
A further embodiment provides a step g) which involves the addition of one or more amphoteric surfactants, for example dipotassium 2-ethylhexyl dipropionate salt.
Furthermore, the production process of the cleaning product according to the present invention can comprise a step h) which involves the addition of one or more additives selected from odor suppressants (preferably zinc ricinoleate), perfumes, solvents, co solvents , anionic surfactants (preferably sodium lauryl sulfate, alkyl polysaccharides), preservatives, amphoteric surfactants (preferably alkyl betaine). Said process is preferably carried out at room temperature.
In a preferred embodiment, step b) of said process is conducted for 10 minutes, while step c) is conducted for at least 15 minutes and step e) is conducted for 25-30 minutes.
Said process offers the advantage of generating a cleaning product characterized by a nanometric micellar composition in which the micelles have a particular flattened shape. This feature is advantageous compared to the traditional spherical shape because in the flattened micelle the contact area between the micelle and the fat molecule is greater; therefore, the surface tension is further reduced while the wettability of the fat molecule increases: this allows obtaining a greater efficiency in terms of cleaning performance.
From the above description, the features of the product object of the present invention are clear, as are the relative advantages.
Finally, it is clear that the product thus
conceived is susceptible of numerous modifications and variations, all of which are within the scope of the invention; furthermore, all the details are replaceable by technically equivalent elements. In practice, any additives may be used according to the technical requirements .
EXAMPLE 1: composition and process according to the invention Table 1 shows an illustrative and non-limiting example of the components of a composition according to the invention, together with the relative quantities, trade names and corresponding suppliers. Table 1
Preparation Process:
30-40% demineralized water is introduced into the mixer, keeping the system always stirred. Raw materials are added in the following order:
- the sodium citrate and subsequently the citric acid are added under stirring;
- 38% GLDA is added and it is subjected to mixing for 10 minutes, then the MMB solvent is added under mixing;
- LIBRATERIC BA70 is introduced and subjected to mixing until dispersion;
- LEVENOL F200 is added, the mixture is left under stirring for at least 15 minutes;
- SIMULSOL SL7G is added and then DEHYDOL LT7 is added;
- demineralized water is added, always stirring, until the desired level is reached (e.g. 100 liters) .
The mixer runs for 25-30 minutes.
Results :
Table 2 reports the chemical-physical features of the cleaning product according to the invention, as well as its ecological properties and the estimate of toxicity .
Table 2
It is therefore possible to deduce that the cleaning product according to the present invention is extremely environmentally friendly and its use is safe for the health of the user.
Tensiometer measurements:
To determine the critical micellar concentration of the surfactants, surface tension measurements were performed with the de Nouy ring method.
For all systems characterized by this technique, a solution of distilled water, 3.5% by weight sodium citrate and 0.5% by weight citric acid were used. The characterized systems are the following:
- A solution of the surfactant Levenol F200;
- A solution of the surfactant Dehydol LT-7;
- A solution of the two surfactants in equal weight ratio.
The tensiometer measurements returned CMC values equal to 1.57% by weight for the LEVENOL F200 and two values equal to 0.27% and 1.23% by weight for the DEHYDOL LT-7. The anomalous behavior of the double CMC suggests a structural change in the arrangement of the molecules, from a spherical shape to an ellipsoidal or rod-like shape.
The mixture of both surfactants, on the other hand, has CMC values equal to 0.28% and 1.60% by weight, which leads to the conclusion that the mixture has a nanometric micellar structure at concentrations higher than the aforementioned CMC.
Determination of the spherical-ellipsoidal packing nanometric micellar structure of the surfactant Glycereth-6 Cocoate (Levenol F200).
The critical micellar concentration (CMC) of a sample of the surfactant Glycereth-6 Cocoate was first determined by carrying out surface tension measurements with the Du Nouy ring method, using a solution of distilled water, sodium citrate 3.5 % by weight and 0.5% by weight citric acid. The CMC of Glycereth-6 Cocoate is around 1.57% ± 0.08 w/w.
A linear fitting was performed on the pre-micellar area of the surface tension curve and, from the slope of this line, thanks to the Gibbs equation {Gs=-1/RT x dy/dln(a)), the surface density of the molecules at the
interface was determined. On the basis of the density value, it was possible to obtain the minimum interfacial area occupied by the "head" of the surfactant. Glycereth-6 Cocoate has a minimum interfacial area of 0.64 ± 0.02 nm2.
The Dynamic Light Scattering (DLS) technique was used to verify the formation of aggregates once the CMC is reached and thus determine their size.
A 3% by weight of Glycereth-6 Cocoate sample was analyzed using a solvent consisting of a solution of distilled water, 3.5% by weight sodium citrate and 0.5% by weight citric acid.
The DLS analysis of the sample shows the presence of a single population of aggregates in solution having a hydrodynamic radius of about 11 nm.
Based on the Tanford equation lmax = 0.15 + 0.1265 NC, where NC is the number of carbon atoms present in the alkyl chain, it is possible to estimate the maximum length of the alkyl chain of the surfactant. Since Glycereth-6 Cocoate has a chain of 12-18 carbon atoms, the length of its alkyl chain is 2.42 nm.
Using the second Tanford formula (VT = 2.74 + 2.69 (n)), where n represents the number of carbon atoms, it was possible to determine that the tail volume of Glycereth-6 Cocoate molecule is 4.8 nm3.
At this point, also exploiting the value of the minimum area occupied by the surface, through the equation PC= do/c, where do represents the minimum interfacial area occupied by the head, v is the volume of the tail or tails and Ic represents the maximum
length of the alkyl chain, the critical packing parameter PC has been determined, which is about 0.3. This value suggests that the nanometric micelles have a spherical-ellipsoidal type packing.
Determination of the nanometric micellar structure for the surfactant DEHYDOL LT-7
Two samples of DEHYDOL LT-7 (one at 0.5% w/w and the other at 3% w/w, therefore at a concentration of about twice the two CMCs shown by the surface tension measurement) were subjected to DLS for the determination of the hydrodynamic radius.
The analysis of the sample at 0.5% w/w reports the presence of a single population of aggregates around 17 nm.
The analysis of the sample at 3% w/w, on the other hand, reveals the presence of two populations: the most intense in terms of number of aggregates stands at a hydrodynamic radius of 2.7 ± 0.6 nm, while the less intense concerns some aggregates having a hydrodynamic radius of 15.0 ± 0.7 nm, aggregates attributable to those already present in the measure with the lowest concentration. Using the Tanford equation we can establish the length of the alkyl chain of the surfactant, and considering that this molecule also has 12-18 carbon atoms, the length of the chain is around 2.42 nm. The tail volume is estimated to be around 0.51 nm3.
These values show that a different packing is estimated for this surfactant compared to Levenol F200, in particular a spherical packing is estimated for the
aggregates seen at 2.7 nm and non-spherical for the aggregates seen at 15 nm.
The present invention has been described for illustrative but not limitative purposes according to its preferred embodiments, but it is to be understood that variations and/or modifications may be made by those skilled in the art without departing from the scope of protection defined in the appended claims.
Claims
1. Cleaning product characterized by a nanometric micellar composition, said cleaning product comprising:
- a first non-ionic surfactant, present in an amount by weight comprised between 3.2% and 9.2%;
- at least a second non-ionic surfactant, present in an amount by weight between 0.2% and 2.2%;
- at least one chelating agent, present in an amount by weight comprised between 2.2% to 4.5%;
- at least one alcohol-based solvent, present in an amount by weight comprised between 12% and 23%;
- water, present in an amount up to 100% by weight, said quantities by weight being referred to the total weight of the composition.
2. Cleaning product according to claim 1, comprising at least one buffer system in order to stabilize the pH of said composition in a range from 8 to 12, preferably from 9 to 11.
3. Cleaning product according to claim 2, wherein said buffer system comprises trisodium citrate and citric acid, said trisodium citrate being present in an amount by weight comprised between 1% and 6.5%, preferably 3%, and said citric acid being present in an amount by weight comprised between 0.45% and 2.2%, preferably 1.2%, said quantities by weight being referred to the total weight of the composition.
4. Cleaning product according to any one of the preceding claims, wherein said first non-ionic surfactant comprises one or more esters of the
polyoxyethylene glycol fatty acid, preferably
Glycereth-6 Cocoate.
5. Cleaning product according to any one of the preceding claims, wherein said first non-ionic surfactant is present in an amount by weight of 6.2% with respect to the total weight of the composition.
6. Cleaning product according to any one of the preceding claims, wherein said at least one second non ionic surfactant is selected from an ethoxylated fatty alcohol RO(CH2CH2O)7H, wherein R is an alkyl group C12- C18, and/or a heptyl polyglucoside.
7. Cleaning product according to any one of the preceding claims, wherein said at least one second non ionic surfactant is present in an amount by weight of 0.7% with respect to the total weight of the composition.
8. Cleaning product according to any one of the preceding claims, wherein said at least one chelating agent is GLDA (N, N-dicarboxymethyl-glut amic acid tetrasodium salt).
9. Cleaning product according to any one of the preceding claims, wherein said at least one chelating agent is present in an amount by weight of 3.4% with respect to the total weight of the composition.
10. Cleaning product according to any one of the preceding claims, wherein said at least one alcohol- based solvent is 3-methoxy-3-methyl-l-butanol.
11. Cleaning product according to any one of the preceding claims, wherein said at least one alcohol- based solvent is present in an amount by weight of 17.5% with respect to the total weight of the composition.
12. Cleaning product according to any one of the
preceding claims, further comprising one or more amphoteric surfactants, preferably dipotassium 2- ethylhexyl dipropionate salt.
13. Cleaning product according to any one of the preceding claims, wherein said one or more amphoteric surfactants are present in an amount by weight comprised between 0.14% and 1.54%, more preferably 0.63%, with respect to the total weight of the composition.
14. Cleaning product according to any one of the preceding claims, comprising one or more additives selected from odor suppressants (preferably zinc ricinoleate), perfumes, solvents, co-solvents, anionic surfactants (preferably sodium lauryl sulfate, alkyl polysaccharides), preservatives, amphoteric surfactants (preferably alkylbetaine).
15. Process for preparing a cleaning product according to any one of claims 1-14, said process comprising the following steps: a) pouring demineralized water in a mixer in an amount by weight comprised between 20 and 50%, preferably between 30 and 40%, based on the total weight of the composition; b) adding at least one chelating agent and at least one alcohol-based solvent and mixing; c) adding a first non-ionic surfactant and mixing; d) adding at least one second non-ionic surfactant different from said first surfactant and mixing; e) adding demineralized water up to 100% and mixing, these steps being conducted not necessarily in the order described.
16. Process according to claim 15, wherein said at
least one chelating agent is GLDA, said at least one alcohol based solvent is 3-methoxy-3-methyl-l-butanol, said first non-ionic surfactant is Glycereth-6 Cocoate, and said at least one second non-ionic surfactant is an ethoxylated fatty alcohol RO(CH2CH2O)7H, wherein R is a C12-C18 alkyl group, and/or a heptyl polyglucoside.
17. Process according to claim 15 or 16, further comprising a step f) which involves the addition of at least one buffer system according to any one of claims 2-3.
18. Process according to any one of claims 15-17, further comprising a step g) which involves the addition of one or more amphoteric surfactants according to any one of claims 12-13.
19. Process according to any one of claims 15-18, further comprising a step h) which involves the addition of one or more additives according to claim 14.
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EP21730680.2A EP4165153A1 (en) | 2020-06-11 | 2021-06-10 | Cleaning product and related synthesis process |
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IT102020000014029 | 2020-06-11 | ||
IT102020000014029A IT202000014029A1 (en) | 2020-06-11 | 2020-06-11 | PRODUCT FOR CLEANSING AND RELATED SYNTHESIS PROCEDURE. |
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IT (1) | IT202000014029A1 (en) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023275269A1 (en) * | 2021-06-30 | 2023-01-05 | Nouryon Chemicals International B.V. | Chelate-amphoteric surfactant liquid concentrates and use thereof in cleaning applications |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3985670A (en) * | 1973-06-01 | 1976-10-12 | Henkel & Cie G.M.B.H. | Liquid regulated-foam detergent compositions |
EP1466960A1 (en) * | 2003-04-08 | 2004-10-13 | Kao Corporation | Liquid detergent composition |
US20140274855A1 (en) * | 2007-09-19 | 2014-09-18 | Bubbles & Beyond Gmbh | Formula for removing color coats and various soil layers from surfaces, method for producing the agent, and method for cleaning |
US20190185785A1 (en) * | 2017-12-20 | 2019-06-20 | Henkel Ag & Co. Kgaa | Washing agent containing amine oxide and sugar surfactants |
-
2020
- 2020-06-11 IT IT102020000014029A patent/IT202000014029A1/en unknown
-
2021
- 2021-06-10 EP EP21730680.2A patent/EP4165153A1/en active Pending
- 2021-06-10 WO PCT/IB2021/055094 patent/WO2021250599A1/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3985670A (en) * | 1973-06-01 | 1976-10-12 | Henkel & Cie G.M.B.H. | Liquid regulated-foam detergent compositions |
EP1466960A1 (en) * | 2003-04-08 | 2004-10-13 | Kao Corporation | Liquid detergent composition |
US20140274855A1 (en) * | 2007-09-19 | 2014-09-18 | Bubbles & Beyond Gmbh | Formula for removing color coats and various soil layers from surfaces, method for producing the agent, and method for cleaning |
US20190185785A1 (en) * | 2017-12-20 | 2019-06-20 | Henkel Ag & Co. Kgaa | Washing agent containing amine oxide and sugar surfactants |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023275269A1 (en) * | 2021-06-30 | 2023-01-05 | Nouryon Chemicals International B.V. | Chelate-amphoteric surfactant liquid concentrates and use thereof in cleaning applications |
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IT202000014029A1 (en) | 2021-12-11 |
EP4165153A1 (en) | 2023-04-19 |
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