Multifunctional soap produced from sodium polyhydroxy stearate

A technology of polyhydroxysodium stearate and sodium hydroxystearate, which is applied in the field of daily chemical and household chemicals, can solve problems such as poor solubility at low temperature and resistance to hard water, etc., and achieve rich raw material sources and comfortable skin High degree of detergency and good detergency

Inactive Publication Date: 2015-06-24
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, natural fatty acid sodium soap has two major defects of being not resistant to hard water and being unable to use under neutral (or acidic) conditions; in addition, saturated fatty acid sodium soap also has poor low-temperature solubility, and unsaturated fatty acid sodium soap then has easy oxidative rancidity etc. question
The above-mentioned self-defects of natural fatty acid sodium soap cause its application in various environments such as hard water, neutrality and low temperature to be limited, so the application of natural fatty acid sodium soap in the above-mentioned environment generally adopts the following measures to solve at present: (1) on the market The anti-hard water soap is mainly added by adding a chelating agent such as EDTA disodium, or adding a large amount of water softener sodium silicate or sodium tripolyphosphate, or compounding with a hard water-resistant synthetic surfactant, such as AES, sulfobetaine, MES 、AEO 9 etc. as calcium soap dispersants, although they can produce better anti-hard water and anti-calcium soap precipitation effects, but these calcium soap dispersants are easy to completely destroy the crystal form of fatty acid sodium soap, resulting in poor formability, durability, or making soap Such products lose their original natural characteristics and are closer to synthetic detergents, so the market acceptance is generally not high
(2) Neutral soaps on the market are mainly obtained by adding a large amount of synthetic surfactants or superfatting agents to natural fatty acid sodium soaps, such as fatty acyl isethionate sodium, AOS, sodium glyceryl ether sulfonate, etc. Although it can reduce the pH applicable range of ordinary fatty acid sodium soap and increase skin comfort, it will also destroy the crystal form and original feeling of use of fatty acid sodium soap
(3) Cold water soaps on the market are mainly prepared from unsaturated fatty acid sodium or potassium soaps with relatively low Krafft characteristics, but due to poor formability, the product form is mainly in the form of liquid soap or soft soap, which cannot be made into bar soap, and Unsaturated fatty acid soap is prone to oxidative rancidity and odor

Method used

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  • Multifunctional soap produced from sodium polyhydroxy stearate
  • Multifunctional soap produced from sodium polyhydroxy stearate
  • Multifunctional soap produced from sodium polyhydroxy stearate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Completely use STHS as fatty acid sodium to make multi-functional soap. Mix 10kg of STHS with 1.0% tetrasodium EDTA, 5% sodium eda and appropriate amount of essence, grind and press it into a transparent soap soap base, and cut into pieces to obtain transparent bar soap, crystal form Complete and transparent, with good bar soap formability; no obvious rotten phenomenon after soaking in water. The performance test results show that the formula has excellent solubility in low temperature, neutral and hard water: (1) Under the pH conditions (pH10) commonly used in common fatty acid sodium soaps, the KP of STHS is less than 0°C, showing excellent low temperature solubility; (2) Under neutral conditions (pH7) where ordinary fatty acid sodium soaps are usually unusable, STHS continues to maintain good low-temperature solubility, and can be completely water-soluble at about 40°C; (3) The calcium ion of ordinary fatty acid sodium soaps is stable The stability is almost zero, wh...

Embodiment 2

[0026] Use SHHS as fatty acid sodium to make multifunctional soap. Dissolve 1000g of SHHS into 1000g deionized water under stirring, add 0.5% preservative, 0.5% tetrasodium EDTA, appropriate amount of flavor and coloring material, no need to make ordinary fatty acid sodium soap Adding a solubilizer or a rheology modifier like a liquid soap, you can get a concentrated liquid soap or soft soap with a mass concentration of 50%; there is no stratification and no precipitate at room temperature; Solubility in nature and hard water: (1) When the formula is used as a low-temperature liquid soap, it will not separate and have no precipitates in the temperature range of -10°C to 40°C; even if it is used at pH7. It can also be completely water-soluble below ℃, and it can quickly dissolve in cold water and play the role of detergent such as decontamination, dispersion and foaming. (2) When the formula is used as a neutral liquid soap, the pH value of the formula will not separate within ...

Embodiment 3

[0028] Manufacture liquid soap with 30% mass concentration with 50% STHS and 50% SHHS, and the formula is clear and transparent above 0°C; 2650mg CaCO 3 / L of hard water is not cloudy, indicating that the formula has excellent solubility in low temperature and hard water.

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Abstract

The invention relates to a multifunctional soap formula, in particular to a method, formula and performance of a multifunctional soap produced from sodium polyhydroxy stearate. Sodium polyhydroxy stearate refers to sodium dyhydroxy stearate (SDHS) derived from oleic acid, sodium tetrahydroxy stearate (STHS) derived from linoleic acid, sodium hexahydroxy stearate (SHHS) derived from linolenic acid and its mixture, and has the advantages of good solubility, low temperature solution and strong calcium soap resistance in neutral pH conditions. Compound of sodium polyhydroxy stearate and other sodium aliphatate can obtain a soap base formula for with functions of a plurality of products including neutral soap, hard water resistant soap and cold water soap, and a plurality of soap products such as liquid soap, soft soap, soap powder and block soap can be produced according to the needs of the market. The invention on the one hand can solve the problem of oxidative rancidity caused by unsaturated fatty acid raw material in soap products, and on the other hand make the scope of application of the soap formula expand to neutral, hard and low-temperature water environment, which is not applicable to common fatty acid sodium soap.

Description

【Technical field】 [0001] The invention relates to a method for producing multifunctional soap, in particular to the use, method and product of producing multifunctional soap with polyhydroxysodium stearate as the main raw material, belonging to the field of daily chemicals and household chemicals. 【Background technique】 [0002] A variety of saturated and unsaturated fatty acids can be obtained by hydrolysis of natural oils and fats. One of its traditional uses is mainly to manufacture various industrial, household or personal care liquid soaps, soft soaps, soap powders or bar soaps, which are low-cost, non-toxic Harmless, low irritation, good biodegradability, fine and rich foam, and strong cleaning power. But, natural fatty acid sodium soap has two major defects of being not resistant to hard water and being unable to use under neutral (or acidic) conditions; in addition, saturated fatty acid sodium soap also has poor low-temperature solubility, and unsaturated fatty acid ...

Claims

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Application Information

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IPC IPC(8): C11D9/02
Inventor 方云夏咏梅赵晓胡学一
Owner JIANGNAN UNIV
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