JPS63196695A - Bleaching agent composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a bleach composition with excellent aroma stability.

[Conventional technology and its problems]

In recent years, sodium percarbonate, sodium perborate, etc. have been dissolved in water to produce hydrogen peroxide for the purpose of cleaning and bleaching clothing and other items. ! Powdered bleach using a bleaching base that releases
It has come to be widely used due to its unique bleaching action, which has a low effect on colors and patterns.

However, while these hydrogen peroxide based bleaching bases do not affect the color or pattern, they have the disadvantage that they do not have a sufficient bleaching blade.

Therefore, organic peracids are attracting attention as a base that does not affect the color or pattern and has a high bleaching edge.

However, organic peracids have a unique peracid odor, which is a major obstacle to commercialization as a bleaching agent.

Therefore, the conventional method is to mask it by adding a fragrance, but since organic peracids have strong oxidizing power, there is a problem in that the fragrance tends to change when a fragrance is added.

Coating organic peracid powder with an inert organic diluent such as hydrocarbon wax, polyoxyethylene alkyl ether, or polyethylene glycol is disclosed in JP-A-56-7305.
It is known from Publication No. 9.

However, even with these techniques, it has been difficult to prevent changes in aroma during high-temperature storage.

[Means for solving problems]

As a result of intensive studies, the inventors of the present invention found that by using organic peroxide powder coated by intimately mixing silicone oil, it is possible to prevent the decomposition of fragrances and obtain a bleach composition with good odor stability. The present invention was completed based on this discovery.

That is, the present invention provides a bleach composition containing an organic peroxide powder coated with silicone oil and a fragrance.

Examples of the organic peroxide used in the present invention include monoperphthalic acid and dodecane diperacid. Preferably, monoperphthalic acid is commercially available as magnesium hexahydrate from Inter7x, and dodecane diperacid is commercially available from Akzo. The appropriate amount of organic peroxide is 40 to 99.8% by weight (hereinafter abbreviated as %), preferably 50 to 90%.

Silicone oils used in the present invention include dimethylpolysiloxane and modified products thereof.

Dimethylpolysiloxane with any viscosity can be used in the present invention, but preferably one with a kinematic viscosity of 10 to 300,000 centistokes at 25°C. Modified polysiloxanes include epoxy-modified, alkyl-modified, A variety of products can be produced by modification methods such as amino modification, carboxyl modification, alcohol modification, fluorine modification, alkyl aralkyl polyether modification, epoxy/polyether modification, polyether modification, olefin modification, α-methylstyrene modification, and higher fatty acid modification. However, in the present invention, products produced by any of these modification methods can be used, but those produced by carboxyl modification, alcohol modification, alkyl aralkyl polyether modification, epoxy/polyether modification, and polyether modification methods are more preferable. is good.

The appropriate amount of silicone oil in the composition is 0.01 to 10%, preferably 0.1 to 5%.

Any method may be used to coat the organic peroxide powder with the silicone oil, as long as the silicone oil is intimately mixed with the organic peroxide powder to form a uniform composite. A method of spraying silicone oil onto the peroxide powder using a spray gun, or a part of the organic peroxide powder with sodium chloride, if necessary,
There is a method in which a master powder obtained by mixing an organic or inorganic powder such as sodium sulfate or sodium citrate with silicone oil in a kneader, Nauta mixer, etc. is uniformly mixed with the remaining organic peroxide powder.

Flavors are not particularly limited, but suitable ones include the following.

Linalool, geraniol, nerol, citronellol, dimethyl octatool, hydroxycitronellol,
Chain terpene alcohols such as tetrahydrolinalool, monoterpene alcohols such as α-terpineol, l-menthol, borneol, and farnesol.

Sesquiterpene alcohols such as nerolidol, santalol, cedrol, vetiverol, aromatic alcohols such as benzyl alcohol, β-phenylethyl alcohol, cinnamic alcohol, dimethylbenzyl carbinol, dimethylphenyl carbinol, geranyl formate,
Benzyl formate, phenylethyl formate, citronellyl acetate, geranyl acetate, linalyl acetate, bornyl acetate, tilvinyl acetate, benzyl acetate, cedryl acetate, acetic acid-pt
-Formic acid or acetate ester, such as butylcyclohexyl, α
- Monoterpene hydrocarbons such as pinene, β-pinene, limonene, and terpinolene, hydrocarbons such as β-caryophyllene, benzaldehyde, phenylacetaldehyde,
Examples include aromatic aldehydes such as cinnamic aldehyde, α-hexylcinnamic aldehyde, and cyclamen aldehyde.

The blending amount of the fragrance is suitably from o,oos to 5%, preferably from 0.001 to 1%.

In the present invention, in addition to the above-mentioned components, a known bleaching agent component may be optionally blended as necessary. Namely, inorganic and organic building blocks such as sodium tripolyphosphate, sodium carbonate, sodium sesquiphosphate, sodium birophosphate, sodium sulfate, sodium borate, sodium bicarbonate, sodium silicate, sodium nitrilotriacetate, sodium ethylenediaminetetraacetate, carboxymethyl Examples include polymeric substances such as cellulose, polyvinyl alcohol, polyethylene glycol, sodium polyacrylate, and a hydrolyzate of vinyl acetate and maleic anhydride copolymer, pigments, fluorescent dyes, and activators. Moreover, these can also be used together with a cleaning composition.

〔Effect of the invention〕

According to the bleach composition of the present invention, by using the silicone oil-coated organic peroxide, the masking property of organic peracid odor does not deteriorate even after high-temperature storage, and the stability of the aroma is not impaired. .

〔Example〕

EXAMPLES Hereinafter, the present invention will be explained in detail with reference to Examples, but the present invention is not limited to these Examples.

The bleach compositions shown in Table 1 were evaluated for aroma stability and effective oxygen residual rate as described below.

Incidentally, coating with various coating materials was performed as follows.

Coating method: After mixing various coating agents and 10 times the weight of magnesium monoperphthalate hexahydrate powder (or this and Glauber's salt powder) in a kneader, mix the remaining magnesium monoperphthalate hexahydrate. powder was mixed.

(1) Fragrance stability Samples were stored in sealed plastic container bottles at 50°C for 14 days, and then evaluated for fragrance stability.

Judgments were made by three experienced olfactory sensory judges based on the following criteria, and are shown as average evaluations.

evaluation O: Almost no change observed.

△: Slight change observed.

×: Change observed.

(2) Residual rate of available oxygen The amount of available oxygen in the sample before and after storage was measured, and the residual rate of available oxygen was calculated using the following formula.

Table 1

Claims (1)

[Scope of Claims] 1. A bleach composition characterized by containing an organic peroxide powder coated with silicone oil and a fragrance. 2. The bleach composition according to claim 1, wherein the organic peroxide is monoperphthalic acid and/or dodecane diperacid.