CN117778112A - Liquid laundry detergent containing starch-based surfactant and preparation method thereof - Google Patents
Liquid laundry detergent containing starch-based surfactant and preparation method thereof Download PDFInfo
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- CN117778112A CN117778112A CN202311755049.3A CN202311755049A CN117778112A CN 117778112 A CN117778112 A CN 117778112A CN 202311755049 A CN202311755049 A CN 202311755049A CN 117778112 A CN117778112 A CN 117778112A
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- starch
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- based surfactant
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- 229920002472 Starch Polymers 0.000 title claims abstract description 71
- 239000008107 starch Substances 0.000 title claims abstract description 71
- 235000019698 starch Nutrition 0.000 title claims abstract description 71
- 239000003599 detergent Substances 0.000 title claims abstract description 64
- 239000004094 surface-active agent Substances 0.000 title claims abstract description 62
- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims abstract description 15
- 239000002280 amphoteric surfactant Substances 0.000 claims abstract description 13
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 13
- 239000003755 preservative agent Substances 0.000 claims abstract description 13
- 230000002335 preservative effect Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- 239000000839 emulsion Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 230000003750 conditioning effect Effects 0.000 claims abstract description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 35
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 30
- 235000021314 Palmitic acid Nutrition 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 15
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 13
- 229920000881 Modified starch Polymers 0.000 claims description 13
- 239000004368 Modified starch Substances 0.000 claims description 13
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 13
- 229960003237 betaine Drugs 0.000 claims description 13
- 235000019426 modified starch Nutrition 0.000 claims description 13
- 150000002148 esters Chemical class 0.000 claims description 11
- 240000003183 Manihot esculenta Species 0.000 claims description 8
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 8
- 235000011152 sodium sulphate Nutrition 0.000 claims description 8
- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 claims description 7
- 229910021538 borax Inorganic materials 0.000 claims description 7
- 235000015165 citric acid Nutrition 0.000 claims description 7
- 235000010241 potassium sorbate Nutrition 0.000 claims description 7
- 239000004302 potassium sorbate Substances 0.000 claims description 7
- 229940069338 potassium sorbate Drugs 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- 239000001509 sodium citrate Substances 0.000 claims description 7
- 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 claims description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 7
- 239000004328 sodium tetraborate Substances 0.000 claims description 7
- KVCGISUBCHHTDD-UHFFFAOYSA-M sodium;4-methylbenzenesulfonate Chemical compound [Na+].CC1=CC=C(S([O-])(=O)=O)C=C1 KVCGISUBCHHTDD-UHFFFAOYSA-M 0.000 claims description 7
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- WVRNUXJQQFPNMN-VAWYXSNFSA-N 3-[(e)-dodec-1-enyl]oxolane-2,5-dione Chemical compound CCCCCCCCCC\C=C\C1CC(=O)OC1=O WVRNUXJQQFPNMN-VAWYXSNFSA-N 0.000 claims description 4
- -1 Sodium fatty alcohol Chemical class 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical group CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 241000282414 Homo sapiens Species 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000005202 decontamination Methods 0.000 description 6
- 230000003588 decontaminative effect Effects 0.000 description 6
- 230000001804 emulsifying effect Effects 0.000 description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 4
- 238000006065 biodegradation reaction Methods 0.000 description 3
- 150000002191 fatty alcohols Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 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 2
- 239000008103 glucose Substances 0.000 description 2
- 230000007794 irritation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004064 cosurfactant Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 235000019387 fatty acid methyl ester Nutrition 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- IPCSVZSSVZVIGE-UHFFFAOYSA-M hexadecanoate Chemical compound CCCCCCCCCCCCCCCC([O-])=O IPCSVZSSVZVIGE-UHFFFAOYSA-M 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Detergent Compositions (AREA)
Abstract
The invention discloses a laundry detergent containing starch-based surfactant and a preparation method thereof, wherein the laundry detergent comprises the following components: starch-based surfactant, anionic surfactant, amphoteric surfactant, pH regulator, conditioner, preservative and deionized water; the method comprises the following steps: (1) Dispersing a starch-based surfactant into suspension by deionized water, and heating and cooling to obtain uniform paste; (2) Adding an anionic surfactant and an amphoteric surfactant into the uniform paste obtained in the step (1) to obtain a uniform system; (3) Adding a pH regulator and a conditioning agent into the uniform system obtained in the step (2) to obtain uniform emulsion; (4) And (3) adding a preservative into the uniform emulsion obtained in the step (3) to obtain the laundry detergent containing the starch-based surfactant. The liquid laundry detergent disclosed by the invention takes the starch-based surfactant as a core surfactant, does not contain LAS, SDS, AOS, has good biodegradability, is mild and safe to human body, and is environment-friendly.
Description
Technical Field
The invention belongs to the technical field of fine chemical engineering, and particularly relates to a laundry detergent containing a starch-based surfactant and a preparation method thereof.
Background
The liquid laundry detergent is an indispensable daily article for modern life. With the development of global social economy and the improvement of the living standard of substances, the environmental awareness of human beings is continuously enhanced, and the safety problem of the laundry detergent on human bodies and the environment is more and more concerned. Surfactants are the most important components in laundry detergents, and therefore the safety issue of laundry detergents is most critical. The most commonly used surfactants in the present laundry detergents are sodium dodecyl benzene sulfonate (LAS), sodium Dodecyl Sulfate (SDS), sodium fatty alcohol polyoxyethylene ether sulfate (AES), sodium alkenyl sulfonate (AOS), sodium fatty acid Methyl Ester Sulfonate (MES), fatty alcohol polyoxyethylene ether (AEO), and the like. The general large amount of surfactants such as LAS, SDS, AES, AOS have large irritation and certain toxicity, the residues of the surfactants can directly or indirectly have potential influence on human health, meanwhile, a considerable amount of surfactants are discharged into the natural environment after being used, the biological effect of the surfactants in sewage is extremely complex, and besides the inherent toxicity of the surfactants, the products after biodegradation or metabolism have serious negative influence on the human ecological environment. Therefore, the safety problem of the liquid detergent on human bodies, animals and environment is important when designing the formula of the liquid detergent, the application of the natural green environment-friendly degradable surfactant in the liquid detergent is particularly important, and the degradable surfactant produced by renewable resources replaces petroleum-based nondegradable surfactant to produce the liquid detergent, so that the liquid detergent is a development trend of the liquid detergent.
Starch alkyl glycoside (APG) is a starch-based surfactant which is developed and applied earlier and has the excellent characteristics of nature, mildness, greenness, complete biodegradation and the like, but is obtained by firstly hydrolyzing starch into glucose and then reacting the glucose with fatty alcohol, so that the process is complex, the process condition is more severe, the production cost is higher, and the cost control of the laundry detergent is not facilitated, so that a large amount of application of the APG in the field of the laundry detergent is limited to a certain extent. The surfactant with hydrophilic and lipophilic properties and low surface tension can be prepared by directly taking starch as a raw material and introducing hydrophobic groups into the molecular structure of the starch through esterification, crosslinking, grafting and other modes, and has the advantages of short production flow, simple technological process and lower production cost. Chinese patent CN115894724a discloses a betaine type composite modified starch-based surfactant and a preparation method thereof, provides a method for directly introducing a hydrophobic ester group into a starch structure, and provides a starch-based surfactant capable of remarkably reducing the surface tension of water, which is beneficial to promoting the popularization and application of the starch-based green surfactant in the field of laundry detergent, and is possible to develop and apply a green laundry detergent containing the starch-based surfactant in a large amount.
Disclosure of Invention
The invention aims at: the laundry detergent with the starch-based surfactant as the core surfactant is provided, so that the problem of safety of the traditional laundry detergent due to the fact that the traditional laundry detergent contains certain surfactants with large irritation, difficult biodegradation and easy environmental pollution is solved.
The technical scheme of the invention is as follows:
a laundry detergent containing starch-based surfactant comprises the following components in percentage by mass:
10-15% of starch-based surfactant, 2-5% of anionic surfactant, 2-5% of amphoteric surfactant, 3-5% of pH regulator, 3-5% of conditioner, 1.5-3% of preservative and the balance of deionized water.
The starch-based surfactant consists of betaine composite modified starch and palmitic acid starch ester according to the mass ratio of 1-9:1.
Preferably, the betaine composite modified starch is prepared by composite modification of tapioca starch by dodecenyl succinic anhydride and dodecyl dimethyl betaine.
More preferably, the surface tension of the betaine composite modified starch obtained by modifying tapioca starch by dodecenyl succinic anhydride and dodecyl dimethyl betaine is 22-30 mN/m (solid content 1%,25 ℃).
Preferably, the palmitic acid starch ester is obtained by esterifying and modifying tapioca starch by palmitic acid.
More preferably, the surface tension of the starch palmitate obtained by esterifying and modifying the tapioca starch by the palmitic acid is 28-35 mN/m (solid content 1%,25 ℃).
The anionic surfactant is C with a mass concentration of 70% 12 ～C 14 Sodium fatty alcohol polyoxyethylene ether sulfate.
The amphoteric surfactant is cocoamidopropyl betaine solution with the mass concentration of 35%.
The pH regulator consists of sodium carbonate, sodium citrate and citric acid in the mass ratio of 3-6 to 1-3 to 1.
The conditioning agent consists of sodium p-toluenesulfonate and sodium sulfate according to the mass ratio of 3-9:1.
The preservative consists of borax, potassium sorbate and citric acid according to the mass ratio of 1-3:1.
The preparation method of the laundry detergent containing the starch-based surfactant comprises the following steps:
(1) Dispersing a starch-based surfactant into a suspension by deionized water, heating the suspension to 90-95 ℃ under the conditions of stirring and condensing reflux, maintaining for 15-20 min under the conditions, and cooling to 55-60 ℃ to obtain uniform paste;
(2) Adding an anionic surfactant into the uniform paste obtained in the step (1), stirring for 10-15 min, adding an amphoteric surfactant, and stirring for 10-15 min to obtain a uniform system;
(3) Adding a pH regulator and a conditioning agent into the uniform system obtained in the step (2), and stirring for 10-15 min to obtain uniform emulsion;
(4) And (3) adding a preservative into the uniform emulsion obtained in the step (3), stirring for 15-20 min, and cooling to below 35 ℃ to obtain the liquid laundry detergent containing the starch-based surfactant.
The invention has outstanding substantive features and remarkable progress:
(1) The liquid laundry detergent disclosed by the invention takes betaine composite modified starch and palmitic acid starch ester as core surfactants, does not contain LAS, SDS, AOS, has good biodegradability, is mild and safe to human body, and is environment-friendly.
(2) The starch-based surfactant in the liquid laundry detergent has the advantages of high surface activity, strong thickening capability, less foam, adjustable viscosity, excellent synergistic effect with cosurfactants such as fatty alcohol polyoxyethylene ether sodium sulfate and the like, and strong washing and decontamination capability.
(3) The liquid laundry detergent disclosed by the invention does not contain organic solvents, thickeners, defoamers and other components, so that the use of non-effective components is reduced, and the total discharge of chemicals in the environment is reduced.
Detailed Description
The technical scheme of the present invention is further specifically described below by examples, but the present invention is not limited thereto.
Example 1
(1) Dispersing 15g of starch-based surfactant (betaine composite modified starch and palmitic acid starch ester with the mass ratio of 9:1) into suspension by 69.5g of deionized water, heating the suspension to 90-95 ℃ under the conditions of stirring and condensing reflux, maintaining for 20min under the conditions, and cooling to 58-60 ℃ to obtain uniform paste; (2) Adding 3g of anionic surfactant into the uniform paste obtained in the step (1), stirring for 10-15 min, adding 2.5g of amphoteric surfactant, and stirring for 10-15 min to obtain a uniform system; (3) Adding 4gpH regulator (sodium carbonate, sodium citrate and citric acid in the mass ratio of 5:2:1) and 4g conditioner (sodium p-toluenesulfonate and sodium sulfate in the mass ratio of 9:1) into the uniform system obtained in the step (2), stirring for 10-15 min, and uniformly emulsifying; (4) Adding 2g of preservative (borax, potassium sorbate and citric acid in a mass ratio of 2:2:1) into the uniform emulsion obtained in the step (3), stirring for 15-20 min, and cooling to below 35 ℃ to obtain the laundry detergent containing the starch-based surfactant. The surface tension of the laundry detergent obtained in this example is 27-29 mN/m at normal temperature.
The starch-based surfactant in this example was replaced with LAS in equal amounts, and the resulting laundry detergent was termed as LAS-based laundry detergent, and the detergency performance was measured with reference to standard GB/T13174-2008, which showed that: the decontamination ratio of the liquid laundry detergent containing the starch-based surfactant to the LAS-based liquid laundry detergent is 1.06-1.11.
Example 2
(1) Dispersing 15g of starch-based surfactant (betaine composite modified starch and palmitic acid starch ester with the mass ratio of 8:1) into suspension by using 64g of deionized water, heating the suspension to 90-95 ℃ under the conditions of stirring and condensing reflux, maintaining for 20min under the conditions, and cooling to 58-60 ℃ to obtain uniform paste; (2) Adding 5g of anionic surfactant into the uniform paste obtained in the step (1), stirring for 10-15 min, adding 3g of amphoteric surfactant, and stirring for 10-15 min to obtain a uniform system; (3) Adding 5gpH regulator (sodium carbonate, sodium citrate and citric acid in the mass ratio of 3:3:1) and 5g conditioner (sodium p-toluenesulfonate and sodium sulfate in the mass ratio of 8:1) into the uniform system obtained in the step (2), stirring for 10-15 min, and uniformly emulsifying; (4) Adding 3g of preservative (borax, potassium sorbate and citric acid in a mass ratio of 2:1:1) into the uniform emulsion obtained in the step (3), stirring for 15-20 min, and cooling to below 35 ℃ to obtain the laundry detergent containing the starch-based surfactant. The surface tension of the laundry detergent obtained in this example is 27-29 mN/m at normal temperature.
The starch-based surfactant in this example was replaced with LAS in equal amounts, and the resulting laundry detergent was termed as LAS-based laundry detergent, and the detergency performance was measured with reference to standard GB/T13174-2008, which showed that: the decontamination ratio of the liquid laundry detergent containing the starch-based surfactant to the LAS-based liquid laundry detergent is 1.09-1.15.
Example 3
(1) Dispersing 10g of starch-based surfactant (betaine composite modified starch and palmitic acid starch ester with the mass ratio of 6:1) into suspension by using 78.5g of deionized water, heating the suspension to 90-95 ℃ under the conditions of stirring and condensing reflux, maintaining for 15min under the conditions, and cooling to 55-57 ℃ to obtain uniform paste; (2) Adding 2g of anionic surfactant into the uniform paste obtained in the step (1), stirring for 10-15 min, adding 2g of amphoteric surfactant, and stirring for 10-15 min to obtain a uniform system; (3) Adding 3gpH regulator (sodium carbonate, sodium citrate and citric acid with the mass ratio of 6:3:1) and 3g conditioner (sodium p-toluenesulfonate and sodium sulfate with the mass ratio of 7:1) into the uniform system obtained in the step (2), stirring for 10-15 min, and uniformly emulsifying; (4) Adding 1.5g of preservative (borax, potassium sorbate and citric acid with the mass ratio of 2:2:1) into the uniform emulsion obtained in the step (3), stirring for 15-20 min, and cooling to below 35 ℃ to obtain the laundry detergent containing the starch-based surfactant. The surface tension of the laundry detergent obtained in the embodiment is 28-30 mN/m at normal temperature.
The starch-based surfactant in this example was replaced with LAS in equal amounts, and the resulting laundry detergent was termed as LAS-based laundry detergent, and the detergency performance was measured with reference to standard GB/T13174-2008, which showed that: the decontamination ratio of the liquid laundry detergent containing the starch-based surfactant to the LAS-based liquid laundry detergent is 1.00-1.06.
Example 4
(1) Dispersing 12g of starch-based surfactant (betaine composite modified starch and palmitic acid starch ester with a mass ratio of 5:1) into suspension by using 71g of deionized water, heating the suspension to 90-95 ℃ under the conditions of stirring and condensing reflux, maintaining for 15min under the conditions, and cooling to 58-60 ℃ to obtain uniform paste; (2) Adding 3.5g of anionic surfactant into the uniform paste obtained in the step (1), stirring for 10-15 min, adding 3.5g of amphoteric surfactant, and stirring for 10-15 min to obtain a uniform system; (3) Adding 4gpH regulator (sodium carbonate, sodium citrate and citric acid in the mass ratio of 3:2:1) and 4g conditioner (sodium p-toluenesulfonate and sodium sulfate in the mass ratio of 5:1) into the uniform system obtained in the step (2), stirring for 10-15 min, and uniformly emulsifying; (4) Adding 2g of preservative (borax, potassium sorbate and citric acid in the mass ratio of 3:3:1) into the uniform emulsion obtained in the step (3), stirring for 15-20 min, and cooling to below 35 ℃ to obtain the laundry detergent containing the starch-based surfactant. The surface tension of the laundry detergent obtained in this example is 27-29 mN/m at normal temperature.
The starch-based surfactant in this example was replaced with LAS in equal amounts, and the resulting laundry detergent was termed as LAS-based laundry detergent, and the detergency performance was measured with reference to standard GB/T13174-2008, which showed that: the decontamination ratio of the liquid laundry detergent containing the starch-based surfactant to the LAS-based liquid laundry detergent is 1.05-1.12.
Example 5
(1) Dispersing 10g of starch-based surfactant (betaine composite modified starch and palmitic acid starch ester with the mass ratio of 1:1) into suspension by 67g of deionized water, heating the suspension to 90-95 ℃ under the conditions of stirring and condensation reflux, maintaining for 15min under the conditions, and cooling to 55-57 ℃ to obtain uniform paste; (2) Adding 5g of anionic surfactant into the uniform paste obtained in the step (1), stirring for 10-15 min, adding 5g of amphoteric surfactant, and stirring for 10-15 min to obtain a uniform system; (3) Adding 5gpH regulator (the mass ratio of sodium carbonate to sodium citrate to citric acid is 2:2:1) and 5g conditioner (the mass ratio of sodium p-toluenesulfonate to sodium sulfate is 3:1) into the uniform system obtained in the step (2), stirring for 10-15 min, and uniformly emulsifying; (4) Adding 3g of preservative (borax, potassium sorbate and citric acid in the mass ratio of 1:1:1) into the uniform emulsion obtained in the step (3), stirring for 15-20 min, and cooling to below 35 ℃ to obtain the laundry detergent containing the starch-based surfactant. The surface tension of the laundry detergent obtained in the embodiment is 28-30 mN/m at normal temperature.
The starch-based surfactant in this example was replaced with LAS in equal amounts, and the resulting laundry detergent was termed as LAS-based laundry detergent, and the detergency performance was measured with reference to standard GB/T13174-2008, which showed that: the decontamination ratio of the liquid laundry detergent containing the starch-based surfactant to the LAS-based liquid laundry detergent is 1.09-1.13.
Claims (2)
1. The liquid laundry detergent containing the starch-based surfactant is characterized by comprising the following components in percentage by mass:
10-15% of starch-based surfactant, 2-5% of anionic surfactant, 2-5% of amphoteric surfactant, 3-5% of pH regulator, 3-5% of conditioner, 1.5-3% of preservative and the balance of deionized water;
the starch-based surfactant consists of betaine composite modified starch and palmitic acid starch ester according to the mass ratio of 1-9:1;
preferably, the betaine composite modified starch is prepared by composite modification of tapioca starch by dodecenyl succinic anhydride and dodecyl dimethyl betaine;
more preferably, the surface tension of the betaine composite modified starch obtained by modifying tapioca starch by dodecenyl succinic anhydride and dodecyl dimethyl betaine is 22-30 mN/m (solid content 1%,25 ℃);
preferably, the palmitic acid starch ester is obtained by esterifying and modifying tapioca starch by palmitic acid;
more preferably, the surface tension of the palmitic acid starch ester obtained by esterifying and modifying the cassava starch by the palmitic acid is 28-35 mN/m (solid content 1%,25 ℃);
the anionic surfactant is the mass concentration70% C 12 ～C 14 Sodium fatty alcohol polyoxyethylene ether sulfate;
the amphoteric surfactant is cocoamidopropyl betaine solution with the mass concentration of 35%;
the pH regulator consists of sodium carbonate, sodium citrate and citric acid according to the mass ratio of 3-6:1-3:1;
the conditioner consists of sodium p-toluenesulfonate and sodium sulfate according to the mass ratio of 3-9:1;
the preservative consists of borax, potassium sorbate and citric acid according to the mass ratio of 1-3:1.
2. A process for preparing a laundry detergent containing a starch-based surfactant according to claim 1, comprising the steps of:
(1) Dispersing a starch-based surfactant into a suspension by deionized water, heating the suspension to 90-95 ℃ under the conditions of stirring and condensing reflux, maintaining for 15-20 min under the conditions, and cooling to 55-60 ℃ to obtain uniform paste;
(2) Adding an anionic surfactant into the uniform paste obtained in the step (1), stirring for 10-15 min, adding an amphoteric surfactant, and stirring for 10-15 min to obtain a uniform system;
(3) Adding a pH regulator and a conditioning agent into the uniform system obtained in the step (2), and stirring for 10-15 min to obtain uniform emulsion;
(4) And (3) adding a preservative into the uniform emulsion obtained in the step (3), stirring for 15-20 min, and cooling to below 35 ℃ to obtain the liquid laundry detergent containing the starch-based surfactant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311755049.3A CN117778112A (en) | 2023-12-20 | 2023-12-20 | Liquid laundry detergent containing starch-based surfactant and preparation method thereof |
Applications Claiming Priority (1)
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| CN202311755049.3A CN117778112A (en) | 2023-12-20 | 2023-12-20 | Liquid laundry detergent containing starch-based surfactant and preparation method thereof |
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