JPH0477417A - Bathing agent - Google Patents

Abstract

PURPOSE:To obtain a bathing agent having excellent fluidity as powder, stability for many hours after addition to water in bathtub and high whiteness, containing titania and/or silica complex powder. CONSTITUTION:A crude drug, a dyestuff, perfume, etc., are supported on complex powder of titania and/or silica adjusted to >=100cc/100g oil absorption amount, <=5mum average particle diameter (<=0.5wt.% particles having >=10mum particle diameter), 500-400 m<2>/g specific surface area and 0.05-0.20 weight ratio of titania and/or silica. The titania and/or silica is mixed with a soluble component (e.g. sodium hydrogencarbonate or sodium sulfate) in dry blend by a ribbon mixer, etc., to give the objective substance. The amount of titania and/or silica used is 1-20wt.%. The bathing agent makes people readily enjoy hot spring even in a household bath room.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel powder bath additive. For more information,
It is a bath agent that has good fluidity as a powder, is stable for a long period of time after being added to bath water, and exhibits a milky white color with a high degree of whiteness.

[Problems to be solved by conventional techniques and inventions] In recent years,
BACKGROUND OF THE INVENTION Various bath additives that take on a milky white color when added to bath water have been proposed as bath additives that can be used to easily enjoy hot springs even in the bathroom at home.

This bath agent is composed of a water-insoluble opacifier as well as a soluble component, and titanium dioxide (titania) is generally used as the opacifier.

However, bath additives containing titania as an opacifying agent tend to settle to the bottom of the bathtub within a relatively short time after being added to the bathwater, reducing the milky white effect and causing discomfort to bathers. have a problem In addition, when using liquid soluble ingredients such as fragrances, herbal medicines, alcohols, etc. as components of bath additives, in order to maintain the fluidity of the bath additive as a powder, it is necessary to have the liquid component supported by the powder component. is necessary.

However, the above titania is insufficient to support a sufficient amount of the liquid component, and requires either adhesion to the surface of other powder components constituting the bath additive or a separate powder for support. Therefore, there have been problems in that the fluidity of the bath additive as a powder decreases, and the whiteness of the bath additive decreases after being added to the bath.

[Means for Solving the Problems] The present inventors have worked diligently to develop a bath agent that has good fluidity as a powder and that exhibits a stable milky white color over a long period of time by adding a small amount to bath water. After much research, by using a specific titania/silica composite powder as an opacifying agent.

This problem has been solved and the present invention has been proposed.

That is, the present invention is a bath agent characterized by containing titania/silica composite powder having an oil absorption of 100 cc/100 g or more as an opacifying agent.

In the present invention, the titania/silica composite powder has an oil absorption of 100 cc/100 g or more, preferably an oil absorption of 15
It is a composite of titania and silica of 0 to 300cc/100g. That is, if the oil absorption amount of the titania/silica composite powder is less than 100 cc/100 g, not only will the stability after being added to bath water decrease, but also the amount of liquid components required as a bath agent will be supported by the powder. It becomes difficult to do so, and the fluidity of the bath additive as a powder also decreases. Also,
Titania with oil absorption exceeding 300cc/100g/
Silica composite powder is difficult to manufacture.

Further, it can be confirmed that the titania/silica composite is amorphous by an X-ray diffraction measurement chart, and cannot be separated into titania particles and silica particles by wet classification.

The titania/silica composite powder having the above oil absorption amount is
There is no particular restriction as long as it has the above oil absorption amount, but
In particular, it is preferable that the specific surface area is 50 to 40 m2/g, preferably 150 to 300 m2/g. Further, the particle size of the titania/silica composite powder is such that the average particle diameter is 5 μm or less, preferably 2 to 4 μm, and the weight ratio of particles of 10 μm or more is 0.5% or less.

In addition, in the titania/silica composite powder used in the bathroom, it is recommended that the titania (TiO2)/silica (Si02) weight ratio be adjusted to 0.05 to 0.20 to increase the whiteness after adding it to the bath. This is preferable in order to further exhibit the effect of maintaining the milky white color and exhibiting a stable milky white color over a long period of time. That is, if the above weight ratio is less than 0.05, the whiteness tends to decrease, and if it exceeds 0.20, it is not only difficult to manufacture the titania/silica composite powder, but also a problem with bath officials. The subsequent stability also tends to decrease.

As the method for producing the titania/silica composite powder used in the present invention, any known method may be employed without particular limitation. For example, a water-soluble titanium salt such as titanium sulfate and a silicate such as sodium silicate are mixed in the presence of sodium sulfate as a precipitation rate regulator, with titania or silica particles present as nuclei, and at a temperature of 90 to 98°C. It can be obtained by reacting with

In order to exhibit the effects of the present invention to a higher degree, the surface of the titania/silica composite powder is preferably surface-treated with silicone. As such silicones, organopolysiloxanes such as methylhydrodienepolysiloxane, dimethylpolysiloxane, and methylphenylborosiloxane are preferably used. The amount of the organopolysiloxane used is generally 1 to 15% by weight based on the titania/silica composite powder.

In the bath additive of the present invention, as long as the lower titania/silica composite powder is used as an opacifying agent, the compositions of known bath additives may be used for the other components without particular limitation. For example, soluble components include powdered soluble components such as inorganic salts such as sodium chloride, sodium sulfate, sodium nitrate, sodium thiosulfate, sodium bicarbonate, and magnesium sulfate; benzoic acid, citric acid, fumaric acid, tartaric acid, Organic acids such as succinic acid, cinnamon bark, saffron, sourdough, valerian, saffron, rosemary,
It is appropriately selected from crude drugs such as horse chestnut and fennel, oils and fats such as olive oil, jojoba oil, liquid paraffin, and petrolatum, and liquid soluble ingredients such as fragrances and alcohols.

The liquid soluble component is preferably supported on the titania/silica composite powder in advance and then triblended with the powdered soluble component in order to maintain high fluidity of the resulting bath agent.

In the present invention, the proportion of titania/silica composite powder in the bath agent is 1 to 20% by weight, preferably 5 to 20% by weight.
15% by weight is preferred.

[Effect] As explained above, the bath additive of the present invention uses the titania/silica composite powder as an opacifying agent, so that it can be used as a powder with good fluidity (X) before being added to the bath water. In addition to showing high whiteness just by adding a small amount to bath water,
Moreover, it has excellent stability in that the whiteness is maintained over a long period of time.

[Example 1] Examples are shown below to further specifically explain the present invention, but the present invention is not limited to these Examples.

In the Examples and Comparative Examples, the bath additives were evaluated by the following method.

(1) Whiteness of flG hot water Stainless steel container (width 25 cm, length 40 c+
2C1 of hot water was poured into a tank (a, depth 25 cm), 3 g of bath additive was added thereto, and after stirring for 5 minutes, the whiteness was measured according to the following criteria.

0: So cloudy that the bottom of the bathtub is not visible Δ: So cloudy that the bottom of the bathtub is slightly visible ×: The bottom of the bathtub is clearly visible
1 g of bath additive was added and stirred, and the stability of whiteness after 1 hour was measured according to the following criteria.

0: Almost no sediment is observed at the bottom of the bathtub Δ: Some sediment is observed at the bottom of the bathtub X: A considerable amount of sediment is observed at the bottom of the bathtub (3) The angle of repose of the powder fluid bath additive was measured.

Example 1 Oil absorption amount 230cc/100g, average particle size 2.0μm (
Among them, particles of 10 μm or more are 0.5% by weight or less) Specific surface area 295 m27 g, titania/silica weight ratio 0
．． After supporting 100 cc of a liquid component consisting of crude drugs, pigments, and fragrances on 100 g of titania/silica composite powder of No. 169, 450 g of sodium bicarbonate and 450 g of sodium sulfate were added.
A bath agent was obtained by tri-blending the powder component consisting of g with a ribbon mixer for 20 minutes.

Table 1 shows the results of the various tests described above for the obtained bath additives.

Example 2 Oil absorption 170cc/100g, average particle size 3.0μm (
Among them, particles of 10 μm or more are 0.5% by weight or less) Specific surface area: 270 m2/g, titania/silica weight ratio: 0-119
100g of titania/silica composite powder with crude drugs, pigments,
After carrying 100 cc of a liquid component consisting of a fragrance, the mixture was triblended with a powder component consisting of 450 g of sodium hydrogen carbonate and 450 g of sodium sulfate for 20 minutes using a ribbon mixer to obtain a bath agent.

Table 1 shows the results of the various tests described above for the obtained bath additives.

Example 3 Oil absorption 150cc/100g, average particle size 3.0pm (
100 cc of a liquid component consisting of one crude drug pigment and a fragrance was supported on 100 g of a titania/silica composite powder with a specific surface area of 300 m2/g and a titania/silica weight ratio of 0.08. Thereafter, the mixture was tri-blended for 20 minutes with a powder component consisting of 450 g of sodium hydrogen carbonate and 450 g of sodium sulfate using a ribbon mixer to obtain a bath agent.

Table 111 shows the results of the various tests described above for the obtained bath additives.

Example 4 100 g of titania/silica composite powder similar to Example 1
After uniformly mixing with 2 g of methylhydrodiene polysiloxane and surface-treating the powder, 100 cc of a liquid component consisting of crude drugs, pigments, and fragrances was supported on the powder, and then a powder component consisting of 450 g of sodium hydrogen carbonate and 450 g of sodium sulfate was mixed with a ribbon. A bath agent was obtained by tri-blending for 20 minutes using a mixer.

The results of the various tests described above are shown in Table 11I1 for the obtained bath additives.

Comparative example 1 Oil absorption 80'cc/100g, average particle size 3μm
(of which particles of 10 μm or more are 0.5% by weight or less), specific surface area: 400 m2/g titania/silica weight ratio: 0°09
A powder component consisting of 100 g of the titania/silica composite powder, 450 g of sodium bicarbonate, and 450 g of sodium sulfate was blended with the same liquid component as in Example 1 for 20 minutes using a ribbon mixer to obtain a bath agent.

Table 1 shows the results of the various tests described above for the obtained bath additives.

Bisame Example 2 100g titania powder and 450g sodium bicarbonate
A powder component consisting of 450 g of sodium sulfate and a liquid component similar to that in Example 1 were blended for 20 minutes using a ribbon mixer to obtain a bath agent.

Table 1 shows the results of the various tests described above for the obtained bath additives.

Claims (1)

[Claims] (1) A bath agent characterized by containing titania/silica composite powder having an oil absorption of 100 cc/100 g or more as an opacifying agent.