JPH03251523A - Bathing agent composition - Google Patents

Abstract

PURPOSE:To obtain a bathing agent composition having excellent emulsion stability, smooth skin after use, not staining a bathtub, by blending a nonionic surfactant having specific HLB with a grape seed oil in a specific ratio. CONSTITUTION:(A) One or more nonionic surfactants having 8-14 HLB, preferably a mixed surfactant of a nonionic surfactant having <=2 HLB and a nonionic surfactant having >=10 HLB to give 8-14 HLB of the mixed surfactant is blended with (B) a grape seed oil which is an oil having extremely refreshing feel, showing excellent emollient action because of higher water retaining power than other vegetable oils and good stability because of high content of tocopherol as essential components in the ratio of 2-40wt.% component A and 2-98wt.% component B to give a bathing agent composition having excellent emulsion stability, utility and synergistic effects of little stain of bathtub.

Description

[Detailed description of the invention] [Industrial application field]

TECHNICAL FIELD The present invention relates to bath additive compositions. More specifically, the present invention provides a bath additive composition that has excellent emulsion stability, leaves the skin smooth after use, and does not easily stain the bathtub.

[Conventional technology]

Bath additives have a long history, starting with the Greek and Roman eras when flowers and perfumed oils were floated in bath water, and the current market base for bath additives was established in recent years when methods using inorganic salts were introduced. . Furthermore, foaming bath additives were developed and the market for bath additives expanded. However, most conventional inorganic salt-based bath additives are health-oriented, and because they cannot contain large amounts of oily ingredients to create a beautiful skin effect after bathing, they do not leave the skin feeling smooth after bathing. There was a tendency. Therefore, recently, self-emulsifying bath additives based on liquid oil and containing emulsifiers have been attracting attention. Self-emulsifying bath additives provide a beautiful skin effect after bathing, as well as a visual effect during bathing. However, conventional self-emulsifying bath additives often have poor emulsion stability during use, resulting in an unpleasant bathing experience, and the combination of ordinary liquid oils does not provide a smooth feeling after bathing. Furthermore, there are many cases where dirt adheres to the inside of the bathtub.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bath additive that overcomes all the drawbacks of conventional self-emulsifying bath additives.

[Means to solve the problem]

The above problems are solved by the present invention. That is, the present invention comprises 2 to 40% by weight of at least one nonionic surfactant having an average HLB of 8 to 14 and 2 to 40% by weight of grapeseed oil.
The present invention relates to a bath additive composition characterized in that it contains 98% by weight. The nonionic surfactant used in the emulsifier of the present invention has an average HLB of 8 to 14. If the average HLB falls outside this range, the emulsion stability deteriorates, making the bath water unpleasant during and after bathing. It becomes a state. In addition, a combination of a nonionic surfactant with an HLB of 2 or less and a nonionic surfactant with an HLB of 10 or more so that the average HLB is in the range of 8 to 14 has good emulsion stability. It is also preferable that the bathtub is less dirty after use. Furthermore, if the nonionic surfactant is less than 2% by weight, emulsification will be unstable, and if it exceeds 40% by weight, skin irritation may be a concern. In addition, examples of the nonionic surfactants used in the bath agent composition of the present invention include sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene fatty acid ester, and polyoxyethylene alkyl ether. , polyoxyethylene alkylphenyl ether,
Examples include glycerin fatty acid ester. Grapeseed oil, which is another essential component of the bath additive of the present invention, is a refined oil extracted from grape seeds and has triglyceride of linoleic acid as its main component.
This oil has a very light texture. In addition, it has a higher water-holding power than other vegetable oils, so it has excellent emollient effects. In addition, grapeseed oil has a high tocopherol content and therefore has good oil stability. In the composition of the present invention,
The blending amount of grapeseed oil is 2 to 98%, but if it is less than 2% by weight, the feeling of use will not be improved. In the present invention, by blending a nonionic surfactant and grapeseed oil in a specific ratio, a synergistic effect is created that provides excellent emulsion stability and usability, as well as less staining of the bathtub. Further, commonly used liquid oil may be added to an extent that does not impede the effects of the present invention. These liquid oils are not particularly limited as long as they are oil components that are liquid at room temperature, but examples include avocado oil, camellia oil, macadamia nut oil, corn oil, olive oil, rapeseed oil, sesame oil, palm oil, palm kernel oil, and sasanqua oil. , castor oil, linseed oil, safflower oil,
Cottonseed oil, eno oil, soybean oil, peanut oil, teaseed oil, kaya oil,
Vegetable liquid oils and fats such as rice bran oil, linden oil, Japanese tung oil, jojoba oil, and medfoum oil; animal liquid oils and fats such as turdle oil, egg yolk oil, mink oil, and orange roughy oil;
Liquid oils and fats such as glycerin trioctanoate and glycerin triisopalmitate, hydrocarbons such as liquid paraffin, squalene and squalane, higher fatty acids such as oleic acid, tall oil and isostearic acid, lauryl alcohol, oleyl alcohol, isostearyl alcohol, octyl dodeca Higher alcohols such as alcohol, silicone derivatives such as methylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, decamethylpolysiloxane, isopropyl myristate, isopropyl palmitate, hexyl laurate, octyldodecyl myristate, dimethyloctanoic acid hexyldecyl,
Diethyl phthalate, dibutyl phthalate, dibutyl cepatate, isopropyl cepatate, diisopropyl cepatate, di-2-ethylhexyl cepatate, glyceryl triisostearate, trimethylolpropane triisostearate, glycerin tri-2-ethylhexanoate, tri-2- Examples of esters include trimethylolpropane ethylhexanoate, neopentyl glycol capriate, glycerin di-2-hebutylundecanoate, cetyl 2-ethylhexanoate, myristyl myristate, oleyl oleate, hexyl oleate, and decyl oleate. It will be done. The bath additive composition of the present invention can contain up to about 5% by weight of water, so an aqueous component can also be blended as needed. Furthermore, from the viewpoint of skin protection, it is preferable to blend extracts of crude drugs and essential oils such as terpene oils as necessary. Extracts of these herbal medicines include, for example, nebula,
Examples include chamomile, chinpi, hamabofuu, loofah, and peach. In addition, examples of essential oils include cane oil,
Spruce oil, calamus oil, rice germ oil, cinnamon oil, cypress oil, lavender oil, tangerine oil, eucalyptus oil, lemon oil,
Rosemary oil, pine oil, calamus oil, etc. can be mentioned. The blending amount of these herbal medicines and essential oils is 0.01~
It may be about 5% by weight. The bath additives of the present invention include conventional ingredients used in ordinary bath additives and cosmetics, such as disinfectants such as parabens, refreshing agents such as β-menthol and peppermint oil, mucopolysaccharides such as hyaluronic acid, and chitin. , chitosan derivatives, pyrrolidone carboxylic acids, and other moisturizing agents may be added as appropriate. The standard usage amount of the bath additive of the present invention is 20g for a 200ε bathtub, but the usage amount can be increased or decreased depending on the feeling of use.

【Example】

The present invention will be explained in more detail below with reference to Examples. Example 1 A bath additive was prepared by heating and dissolving all components of the formulation shown below at 80° C. and then cooling, and tested for emulsion stability, feeling of use, and staining of the bathtub. The types and amounts of grapeseed oil and nonionic surfactant in the formulation are shown in Tables 1 and 2. The results for the bath additive of the present invention are shown in Table 1, and the results for the comparative bath additive are shown in Table 2. Note that r POEJ in the nonionic surfactant column in the table is an abbreviation for polyoxyethylene, and the number in parentheses below represents the number of moles added. HLB is 1.7. (Bath additive formulation) ・Isopropyl myristate 25%・Cetyl octoate 10%・Squalane 10%・Grapeseed oil X%・Nonionic surfactant y%・Liquid paraffin
Residual Amount (Emulsion Stability) Add 1 g of bath additive to 40°C, 10β warm water, stir thoroughly, and judge the emulsion stability with the naked eye. ○ ・・・・・・ Completely emulsified △ ・・・・・・
・ Slightly emulsified × ... Not emulsified at all (feeling of use) Add 18g of bath salt to 40°C, 1801 warm water, stir thoroughly, take a bath for 10 minutes, and towel-dry the skin. The light feel and smooth feel were tested by a panel of five people and evaluated as follows.・5 points: It is very sticky and has a strong smooth feeling.・4 points: It is not very sticky and has a very smooth feeling.・3 points: It is a little sticky, but the feeling is not smooth.・2 points. It is not sticky or smooth.・1 point Each panel is quite sticky and not smooth.
The evaluation scores were averaged and ranked as follows. ○...4 points or more△...3 to less than 4 points×...Less than 3 points (bathtub stains) Add 1g of bath additive to 40°C, 104 warm water and add enough After stirring, disperse 0.5 g of artificial dirt (myristin'tti 20%, oleic acid 20%, beef tallow 30%, cholesterol 10%, paraffin wax 10%, squalene 10%), leave it for 12 hours, and let it stand more quietly than the container. The stains on the container after discarding the water were visually observed and judged using the following criteria. ○ ・・・・・・ No dirt at all △ ・・・
... A little adhesion × ... A large amount of adhesion Example 8 A bath additive having the following formulation was prepared according to Example 1. Note that the average HLB of the nonionic surfactant was 13.0. (Bath additive prescription) ・Octanoic acid triglyceride 5% ・Octyldodecyl myristate 5% ・Jojoba oil
3%・Grapeseed oil 30%・Spruce oil
3% rice germ oil
3% Chamomile extract
0.1% Senkyu extract
0.1% liquid paraffin
14.9%・Fragrance
2% glycerin monostearate (HLB=4.0)
5%・POE(20) Sorbitan monooleate (HLB=20) 28
%/Water 1% Example 9 A bath additive having the following formulation was prepared according to Example 1. Note that the average HLB of the nonionic surfactant was 12.0. (Bath additive formulation) - Liquid paraffin 34.3% - Grapeseed oil 4o% - Sorbitan trioleate (HLB = 1.7)
2%・POE (30) Hardened mustard oil () ILB=11 > 15
%・Polyoxyethylene oleyl ether (HLB=1
5) 3% avocado oil 2% eucalyptus oil
1% rosemary oil
1% pine oil
1% Tocopherol acetate
0.5% hyaluronic acid
0.1% Shikonin
A practical test was conducted on each of the 0.1% bath salts of Examples 8 and 9 in a household bathtub (2004), and it was found that the emulsifying properties were good, leaving a dry and smooth feeling on the skin after bathing, and leaving a feeling of dryness and smoothness on the skin the next day. No dirt adhered to the walls of the bathtub. [Effects of the Invention] The bath additive of the present invention has excellent emulsion stability, leaves the skin smooth after use, and has the effect of not leaving any dirt on the bathtub. are doing.

Claims (1)

[Claims] (1) 2 to 40% by weight of at least one nonionic surfactant with an average HLB of 8 to 14 and grapeseed oil 2
A bath additive composition comprising ~98% by weight.