JPH04266812A - Shampoo composition - Google Patents

Abstract

PURPOSE:To improve feeling of foam and conditioning properties of a shampoo composition by blending a fatty acid ester of glucose and/or alkylglucoside reduced in irritation to skin and being mild in feeling in use. CONSTITUTION:(A) A glucose fatty acid ester and/or 1-4C alkyl. glucoside fatty acid ester is used jointly with (B) a cationic gum, preferably expressed by the formula I, in which at least part or OH contained therein is replaced by a quaternary nitrogen-containing group expressed by formula II (R<1> to R<3> are 1-3C alkyl; X<-> is monovalent anion) and further preferably content of R is contained at an mount of >=1%, especially 1-2% in the cationic bum expressed by formula I, at blending amounts of the component A of 1-30%, expecially 1-20% and the component B of 0.1-3%, especially 0.1-2% based on total composition to provide a shampoo composition being mild in feeling in use and simultaneously having excellent smoothness of foam, feeling of foam such as creamy feeling and conditioning property.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shampoo composition that is mild in feel and has excellent foam feel and conditioning properties.

0002

[Prior art and problems to be solved by the invention] Conventionally,
Anionic surfactants have been mainly used in shampoo compositions as active agents for cleansing power and lathering, but in recent years, the feeling of use has progressed to become milder, and they are more effective against the skin than anionic surfactants. There is a need for a shampoo composition that is less irritating. Therefore, in order to create a shampoo composition that meets this demand, the present applicant has previously developed fatty acid esters of glucose and/or alkyl glucosides in which the alkyl group has 1 to 4 carbon atoms (hereinafter collectively referred to as glucose fatty acid esters). ) was proposed (Patent Application No. 1999-33).
No. 7952, 337953, 337954, 2-414
353).

However, shampoo compositions containing the above-mentioned glucose fatty acid esters have poor foam texture such as smoothness and creaminess compared to those containing conventional anionic surfactants. There is still room for improvement in conditioning performance, and improvements in these properties have been desired.

0004

[Means and Effects for Solving the Problem] As a result of intensive studies in order to meet the above-mentioned needs, the present inventors have found that the above-mentioned glucose fatty acid esters, which are mild activators, particularly have an acyl group having 4 to 4 carbon atoms. 22 glucose fatty acid esters, especially glucose fatty acid esters with a monoester content of 90% (wt%) or more, when cationized guar gum, which has conventionally been used only as a thickener, is used in combination. , the smoothness of the foam without compromising its mildness,
It was discovered that foam feel such as creamy feeling and conditioning properties were improved, and the present invention was completed.

That is, the present invention provides a shampoo composition comprising a combination of glucose and/or a fatty acid ester of an alkyl glucoside whose alkyl group has 1 to 4 carbon atoms and cationized guar gum.

The present invention will be explained in detail below. The first essential component of the hair cosmetic of the present invention is glucose fatty acid ester. As glucose fatty acid esters, those obtained by synthesis from glucose or alkyl glucosides and fatty acids having 4 to 22 carbon atoms, more preferably 6 to 14 carbon atoms, or fatty acid derivatives such as lower alkyl esters thereof can be suitably used. .

[0007] In this case, as the raw material glucose, it is possible to use starch obtained by hydrolyzing starch of corn, potato, etc. with an acid or an enzyme, decolorizing it, and purifying it. Examples of such substances include crystalline glucose, powdered glucose, and granular glucose defined by JAS.

[0008] Also, the number of carbon atoms in the alkyl group of the raw material is 1 to 4.
Examples of the alkyl glucoside include glucose bound to a lower alcohol having 1 to 4 carbon atoms, such as 1-methyl glucoside, 1-ethyl glucoside, 1-propyl glucoside, 1-isopropyl glucoside, and 1-butyl glucoside. Typical examples include those commercially available from Staley Company.

On the other hand, fatty acids can be natural, synthetic, saturated, unsaturated, linear, branched, etc. as long as they have 4 to 22 carbon atoms.
They can be suitably used regardless of whether they are used singly or as a mixture. Natural fatty acids such as isobutyric acid, caproic acid, octanoic acid, decanoic acid, lauric acid, and myristic acid obtained by hydrolysis from vegetable oils such as coconut oil, palm oil, tallow oil, rapeseed oil, and soybean oil, and animal oils. Examples include saturated and unsaturated linear fatty acids such as palmitic acid, stearic acid, linoleic acid, oleic acid, and undecanoic acid. Furthermore, as synthetic fatty acids, mixtures of linear and branched fatty acids obtained by oxidizing olefin polymers can be used, and fatty acids derived from microorganisms such as γ-linolenic acid can be used. You can also do that. Furthermore, as the lower alkyl ester of the fatty acid, an alkyl ester of the above-mentioned fatty acid having 1 to 3 carbon atoms such as methyl, ethyl, and propyl can be used, and a halogenated fatty acid can also be used as the raw material.

[0010] Glucose fatty acid esters can be produced by ester synthesis using these raw materials using lipase or the like, such as transesterification of raw oils and fats with glucose, transesterification of lower alkyl esters of fatty acids with glucose, and transesterification of fatty acids with glucose. methods such as ester synthesis of
Furthermore, a synthesis method using fatty acid chloride and glucose,
It can also be synthesized by various other known methods.

[0011] In this case, in the present invention, as the glucose fatty acid ester, it is preferable to use a glucose fatty acid ester having a monoester content of 90% or more, particularly 95% or more, in order to achieve the above-mentioned object of the present invention. . In addition, the polyester content of triester or higher is 1%.
Below, it is more preferably 0.5% or less,
All of the above-mentioned known methods produce esters with a low monoester content and a high tri- or higher polyester content. Therefore, in order to obtain a monoester, fractionation after synthesis,
Isolation may be time-consuming. Therefore, from this point of view, the present applicant has previously proposed patent application No. 1-210 for the production of monoester.
The method using heat-stable lipase proposed in No. 495 is preferably employed.

[0012] As the glucose fatty acid monoester, one in which the OH group at the 6-position of glucose is esterified is preferable.

Specific examples of such glucose fatty acid monoesters include 6-O-octanoylglucose,
6-O-decanoylglucose, 6-O-lauroylglucose, 6-O-myristoylglucose, 6-O-
Examples include palmitoylglucose, 6-O-oleoylglucose, 6-O-linoleoylglucose, and the like.

Further, as the alkyl glucoside fatty acid ester having 1 to 4 carbon atoms, methyl 6-O-octanoyl glucoside, ethyl 6-O-octanoyl glucoside, ethyl 6-O-lauroyl glucoside, ethyl 6-O-octanoyl glucoside,
Examples include -palmitoyl glucoside, ethyl 6-O-oleoyl glucoside, propyl 6-O-octanoyl glucoside, butyl 6-O-octanoyl glucoside.

[0015] In the present invention, one type of the above-mentioned glucose fatty acid esters may be used alone, or two or more types may be used in combination.

[0016] The amount of glucose fatty acid ester to be blended can be selected variously, but it is usually 1 to 30% of the total composition.
%, especially from 1 to 20%.

The cationized guar gum, which is the second essential component of the present invention, can be obtained, for example, by an ether bond between guar gum and 2,3-epoxypropyltrimethylammonium chloride, and in particular has the following structural formula (1). , one in which at least a part of the hydroxyl groups contained therein is substituted with a quaternary nitrogen-containing group represented by the following general formula (2) is preferably used.

[0018]

[Chemical formula 1]

Here, in the above formula (2), R1, R
2 and R3 are each an alkyl group having 1 to 3 carbon atoms,
Examples include methyl group, ethyl group, purpyl group, and the like. Moreover, X- is a monovalent anion, and examples thereof include halogen atoms such as chlorine, bromine, and iodine, methyl sulfate, and ethyl sulfate. The content of such quaternary nitrogen-containing groups of formula (2) is preferably 1% or more, particularly 1 to 2%, in the cationized guar gum of formula (1).

The amount of cationized guar gum blended is preferably 0.1 to 3%, particularly 0.1 to 2%, based on the total composition. If it is less than 0.1%, the foam feel and conditioning properties tend to be poor, and if it exceeds 3%, the foam texture and conditioning properties may be unfavorable.

[0021] In addition to the above-mentioned essential ingredients, the shampoo composition of the present invention may contain other commonly used ingredients, such as anionic surfactants and nonionic surfactants other than those mentioned above, as long as they do not impede the effects of the present invention. Various surfactants such as surfactants, amphoteric surfactants, and cationic surfactants, oils, anti-inflammatory agents, anti-dandruff agents, fragrances, pigments, preservatives, etc. can be blended.

[0022]

[Examples] The present invention will be specifically explained below with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.

[Examples 1 to 3, Comparative Examples 1 to 3] Shampoo compositions having the compositions shown in Table 1 were prepared, and the foam feel and conditioning properties were evaluated by the following methods. The results are also listed in Table 1. Evaluation method for foam feel and conditioning properties: Hair
3 g of a standard sample and a sample having the composition shown in Table 1 were applied to each of the left and right sides, and the feel when lathered and the conditioning properties during rinsing were evaluated by 10 testers according to the following criteria. In addition, as a standard sample, polyoxyethylene lauryl ether sodium sulfate (p = 3) 1
0%, coconut oil fatty acid diethanolamide 3%, sodium sulfate 1%, and water remaining. 5 Superior to the standard product 4 〃 Slightly superior 3 Same as 2 Slightly inferior to the standard product 1 〃 Clearly inferior ○: Average evaluation value 3.5 points or more △: Average evaluation value 3.4 to 2 .5 points ×: Average evaluation value less than 2.5 points

[0024]

[Table 1]

From the results in Table 1, it was found that the shampoo containing cationized guar gum together with glucose fatty acid esters
It can be seen that the composition has significantly improved foam feel and conditioning properties.

[Examples 4 to 7] Shampoo compositions having the compositions shown in Table 2 were evaluated in the same manner as above.

[0027]

[Table 2]

[Example 8]

[0029]

[Table 3]

[0030]

EFFECTS OF THE INVENTION The shampoo composition of the present invention is less irritating to the skin, has a milder feel, and has excellent foam feel and conditioning properties.

Claims (1)

[Claims] 1. A shampoo composition comprising a combination of glucose and/or a fatty acid ester of an alkyl glucoside whose alkyl group has 1 to 4 carbon atoms and cationized guar gum.