JPS61178912A - Liquid shampoo composition - Google Patents

Abstract

PURPOSE:The titled composition having improved liquid properties without losing merits of long-chain alcohol, containing a sulfate of a specific long-chain alcohol, an adduct of the alcohol with an alkylene oxide and/or its sulfate. CONSTITUTION:The titled composition which has no unpleasant squeaking phenomena during hair washing, provides good finish with feeling of moisture, omits or simplifies rinse treatment after hair washing, and has improved liquid properties, containing one or more selected from a sulfate of mainly 16-20C saturated or unsaturated alcohol, an adduct of the alcohol with an alkylene oxide, and its sulfate. The blend is used with a short-chained alcohol sulfate, etc., and can raise synergistically solubility without losing merits of both the components, and in that case, the blending ratio of the long-chain alcohol derivative is >=10wt%, preferably >=20wt% base on the total active component.

Description

[Detailed description of the invention] [Industrial application fields] FIELD OF THE INVENTION The present invention relates to liquid shampoo compositions.

[Prior Art] Shampoos currently sold on the market are limited to liquid shampoos, but this liquid needs to maintain a uniform state over a wide temperature range from winter to summer. For this purpose, sulfates or alkylene oxide addition sulfates such as relatively water-soluble and short-chain higher alcohols, such as coconut alcohol whose main component is lauryl alcohol, or petroleum-based synthetic alcohols represented by the oxo method, are used. The current situation is that Long-chain alcohols whose main ingredient is alcohol with 16 to 20 carbon atoms, such as those made from beef tallow, pig intestines, or palm oil, do not squeak when washed, leaving the hair with a good texture and supple feel. However, sulfate has low water solubility and cannot maintain a liquid state. Furthermore, even if alkylene oxide is added, it is not possible to maintain the liquid state with the usual addition amount, and if a large amount is added, the foaming property, which is one of the important properties of shampoo, will decrease and practicality will be lost. For this reason, no examples of using this alcohol have been found.

[Problems to be Solved by the Invention] The present inventors have completed the present invention as a result of intensive studies to obtain a liquid shampoo with excellent liquid properties without losing the advantages of these long-chain alcohols. Ta.

That is, the present invention mainly includes one or more selected from sulfates of saturated or unsaturated alcohols having 16 to 20 carbon atoms, alkylene oxide adducts of the alcohols, and sulfates of adducts thereof. The purpose of the present invention is to provide an excellent liquid shampoo composition having the following characteristics.

Means for Solving Problem F] The long-chain alcohol that can be applied in the present invention is mainly a saturated or unsaturated alcohol having 16 to 20 carbon atoms, and specifically, beef tallow, pig intestine, and palm oil. Other examples include alcohols with similar compositions obtained from high-boiling seafood, vegetable oil, fish oil, etc. of coconut alcohol.

In the present invention, in order to obtain a shampoo composition without impairing liquid properties, 0 mole to a suitable number of moles of alkylene oxide is added depending on the iodine value of the alcohol, and then sulfation is performed. For example, tallow alcohol is sulfated by adding 2 moles or more, preferably 4 moles or more of alkylene oxide.

Examples of the alkylene oxide referred to in the present invention include ethylene oxide and propylene oxide, and coadducts thereof are also applicable.

When medium and short chain alcohols are used together, 0 moles of alkylene oxide may be used, and the appropriate selection may be made depending on the number of moles of long chain alcohol added, but there is no squeaking when washing the hair,
In order to obtain a good texture after washing, it is desirable that the active ingredients according to the present invention be contained in an amount of 10% or more, preferably 20% or more of the total active ingredients.

Furthermore, the solubility can be synergistically increased by using a sulfate of a short-chain alcohol or a sulfate of an alkylene oxide adduct of the alcohol in combination. In this case, the respective advantages of long chain alcohols and medium and short chain alcohols are not lost.

In the composition according to the present invention, in addition to the commonly used alkanolamide, other 7ionic, nonionic, and amphoteric surfactants can be used in combination without any restrictions as long as they do not impair the liquid properties. Furthermore, chelating agents, bactericidal agents, preservatives, perfumes, viscosity modifiers, pigments, pearlizing agents, anti-dandruff agents, etc. can be added as appropriate.

[Example code] The present invention will be explained in detail with reference to Examples below.

Physical properties and hair washing tests were conducted on the blended compositions obtained according to the present invention using commonly used blended compositions obtained using short-chain coconut alcohol-based and synthetic alcohol-based raw materials as standards.

Each formulation has a total active content of 20%, 4% alkanolamide, and other auxiliary ingredients: 0.1% ethylenediaminetetraacetate, 0.2% preservative, 0 fragrance.
．． 3%, the remainder being water.

The liquid properties were evaluated by observing the state after being left in a -5°C low-temperature constant temperature bath for one month.

Uniform and stable formulations are marked with a Q mark, while those which become cloudy or form precipitates are marked with an X mark.

In the hair washing test, 10 people compared each of the formulations of Examples 1 to 9 with a standard formulation and evaluated them against the standard, and a conclusion was reached with the same evaluation of 6 Å or more out of 10 people.

The results obtained are listed in the table.

[Effects of the Invention] As is clear from the table, the formulation according to the present invention does not cause the unpleasant squeaking phenomenon during hair washing, provides a moist wash finish, and can omit or simplify the rinsing process after washing the hair.

Procedural amendment written spontaneously) 1. Display of case 1985 Patent application No. 18825
No. 2, Name of the invention Liquid shampoo composition 3, Relationship with the case of the person making the amendment Patent applicant Address 13-5 Yoshishima Yayu-cho, Fushimi-ku, Kyoto-shi, Kyoto Prefecture Number of inventions increased by the amendment None 7. Contents of amendment (1) “Long chain alcohol” in the fourth line of page 2 of the specification has been changed to “
Corrected to ``long-chain alcohol sulfate.''

(2) In the 5th line from the bottom of page 3 of the specification, ``Add...
Then it is sulfated. It can be obtained by adding ``...'' to sulfation, and then neutralizing it with commonly used alkali metals such as sodium, alkaline earth metals such as magnesium, ammonium, or alkanolamines such as triethanolamine, etc. I can do it,” he corrected.

(3) On page 4 of the specification, lines 2 to 4, "When medium or short chain alcohols are used together, 0 moles of alkylene oxide may be used, or the appropriate selection may be made depending on the number of moles of long chain alcohol added. "," is changed to "When medium or short chain alcohol sulfate is used in combination, it may be 0 moles of alkylene oxide, and may be selected as appropriate depending on the number of moles of alkylene oxide added to the long chain alcohol." I am corrected.

(4) Examples 10 and 11 are added to the table on page 7 of the specification.

Claims (1)

[Claims] A liquid shampoo composition comprising one or more selected from sulfates of saturated or unsaturated alcohols having 16 to 20 carbon atoms, alkylene oxide adducts of the alcohols, or sulfates of adducts thereof.