Concentrated washing powder and preparation method thereof

Abstract

The invention discloses a concentrated washing powder and a preparation method thereof, and belongs to the technical field of washing powder equipment. Starch and methanol are firstly subjected to a glycosyl transfer reaction under supercritical conditions, and then p-toluenesulfonic acid is used as a catalyst to obtain a detergent which has high surface activity and good detergency and is non-irritating to the skin. The detergent can be completely biodegraded, and the environment will not be polluted; and the concentration of a substrate is increased. Through interaction, a ''core-shell'' structural micelle is formed, thus reducing the use amount of a surfactant and increasing the wetting effect. By using itaconic acid and maleic anhydride as raw materials, the washing effect is improved;and by adding chitosan and baicalin, the antibacterial property of fabric during cleaning is improved. The invention solves the problem that alkali in existing washing powder exceeds the standard, the cleaning effect is poor and the usage amount is large.

Description

technical field

[0001] The invention belongs to the technical field of washing powder equipment, in particular to a concentrated washing powder and a preparation method thereof. Background technique

[0002] Washing powder is an indispensable daily chemical product in our daily life. There are various types of washing powder. The technology of washing powder is relatively mature, but the energy consumption is high. Traditional laundry detergent is mainly composed of active ingredients and auxiliaries (including builder ingredients, buffer ingredients, synergistic ingredients, fillers, flavors, etc.). The active ingredients mainly include sodium alkylbenzene sulfonate, fatty alcohol polyoxyethylene ether, sodium fatty alcohol sulfate, soap and other ionic or nonionic surfactants, and the added amount is about 10~30%. Its production methods mainly include high-tower spray method, agglomeration molding method, and high-tower-agglomeration molding method.

[0003] However, the...

Examples

preparation example Construction

[0030] A preparation method of concentrated washing powder, comprising the steps of:

[0031] In terms of parts by mass, take 8~10 parts of detergent, 3~5 parts of washing aid, 2~4 parts of antibacterial active agent, 2~5 parts of chelating auxiliary agent, 2~4 parts of fabric finishing active agent, 0.2~ 0.5 parts of fluorescent whitening agent CBS, 50~70 parts of water, 0.2~0.4 parts of fatty acid sodium, heated to 40~60°C, stirred and mixed for 20~30min, dried for 5~7h, crushed through 80 mesh sieve, collected sieved particles, and made grains, that is, concentrated washing powder.

Embodiment 1

[0033] Detergent: (1) Add starch to methanol at a mass ratio of 1:10, ultrasonically disperse for 10 minutes, pass through nitrogen protection, heat up to 250°C for 2 hours, filter, take the filtrate and add p-toluenesulfonic acid at a mass ratio of 80:1, Raise the temperature to 110°C, then add 60% iso-octanol of the filtrate quality dropwise, control the dropwise addition time for 20 minutes, keep warm for 1 hour, filter, and take the filtrate a;

[0034] (2) Take the filtrate a and add sodium borohydride at a mass ratio of 40:2, adjust the pH to 8, distill at 140°C and 0.01MPa under reduced pressure to obtain a vacuum distillate, and take the vacuum distillate at a mass ratio of 50:3: 2. Add sodium borohydride and sodium hydroxide solution with a mass fraction of 10% to obtain a mixed solution. Take the mixed solution and add 30% hydrogen peroxide at a mass ratio of 3:2, keep it at 75°C for 2 hours, and adjust the pH to 8. Get the substrate;

[0035] (3) Take alginic acid ...

Embodiment 2

[0043] Detergent: (1) Add starch to methanol at a mass ratio of 2:13, ultrasonically disperse for 13 minutes, pass through nitrogen protection, heat up to 255°C for 3 hours, filter, take the filtrate and add p-toluenesulfonic acid at a mass ratio of 90:2, Raise the temperature to 120°C, then add iso-octanol dropwise with 70% of the filtrate mass, control the dropping time for 25 minutes, keep warm for 1.5 hours, filter, and take the filtrate a;

[0044] (2) Take the filtrate a and add sodium borohydride at a mass ratio of 45:3, adjust the pH to 8.5, and distill under reduced pressure at 145°C and 0.01MPa to obtain a vacuum distillate. Take the vacuum distillate at a mass ratio of 60:4: 5 Add sodium borohydride and sodium hydroxide solution with a mass fraction of 10% to obtain a mixed solution, take the mixed solution and add 30% hydrogen peroxide at a mass ratio of 6:4, keep it warm at 78°C for 2~4h, and adjust the pH to 8.5, get the matrix;

[0045] (3) Take alginic acid an...

technical field

[0001] The invention belongs to the technical field of washing powder equipment, in particular to a concentrated washing powder and a preparation method thereof. Background technique

[0002] Washing powder is an indispensable daily chemical product in our daily life. There are various types of washing powder. The technology of washing powder is relatively mature, but the energy consumption is high. Traditional laundry detergent is mainly composed of active ingredients and auxiliaries (including builder ingredients, buffer ingredients, synergistic ingredients, fillers, flavors, etc.). The active ingredients mainly include sodium alkylbenzene sulfonate, fatty alcohol polyoxyethylene ether, sodium fatty alcohol sulfate, soap and other ionic or nonionic surfactants, and the added amount is about 10~30%. Its production methods mainly include high-tower spray method, agglomeration molding method, and high-tower-agglomeration molding method.

[0003] However, the...

Examples

preparation example Construction

[0030] A preparation method of concentrated washing powder, comprising the steps of:

[0031] In terms of parts by mass, take 8~10 parts of detergent, 3~5 parts of washing aid, 2~4 parts of antibacterial active agent, 2~5 parts of chelating auxiliary agent, 2~4 parts of fabric finishing active agent, 0.2~ 0.5 parts of fluorescent whitening agent CBS, 50~70 parts of water, 0.2~0.4 parts of fatty acid sodium, heated to 40~60°C, stirred and mixed for 20~30min, dried for 5~7h, crushed through 80 mesh sieve, collected sieved particles, and made grains, that is, concentrated washing powder.

Embodiment 1

[0033] Detergent: (1) Add starch to methanol at a mass ratio of 1:10, ultrasonically disperse for 10 minutes, pass through nitrogen protection, heat up to 250°C for 2 hours, filter, take the filtrate and add p-toluenesulfonic acid at a mass ratio of 80:1, Raise the temperature to 110°C, then add 60% iso-octanol of the filtrate quality dropwise, control the dropwise addition time for 20 minutes, keep warm for 1 hour, filter, and take the filtrate a;

[0034] (2) Take the filtrate a and add sodium borohydride at a mass ratio of 40:2, adjust the pH to 8, distill at 140°C and 0.01MPa under reduced pressure to obtain a vacuum distillate, and take the vacuum distillate at a mass ratio of 50:3: 2. Add sodium borohydride and sodium hydroxide solution with a mass fraction of 10% to obtain a mixed solution. Take the mixed solution and add 30% hydrogen peroxide at a mass ratio of 3:2, keep it at 75°C for 2 hours, and adjust the pH to 8. Get the substrate;

[0035] (3) Take alginic acid ...

Embodiment 2

[0043] Detergent: (1) Add starch to methanol at a mass ratio of 2:13, ultrasonically disperse for 13 minutes, pass through nitrogen protection, heat up to 255°C for 3 hours, filter, take the filtrate and add p-toluenesulfonic acid at a mass ratio of 90:2, Raise the temperature to 120°C, then add iso-octanol dropwise with 70% of the filtrate mass, control the dropping time for 25 minutes, keep warm for 1.5 hours, filter, and take the filtrate a;

[0044] (2) Take the filtrate a and add sodium borohydride at a mass ratio of 45:3, adjust the pH to 8.5, and distill under reduced pressure at 145°C and 0.01MPa to obtain a vacuum distillate. Take the vacuum distillate at a mass ratio of 60:4: 5 Add sodium borohydride and sodium hydroxide solution with a mass fraction of 10% to obtain a mixed solution, take the mixed solution and add 30% hydrogen peroxide at a mass ratio of 6:4, keep it warm at 78°C for 2~4h, and adjust the pH to 8.5, get the matrix;

[0045] (3) Take alginic acid an...

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