Production method of deodorized polyoxyalkylene-modified polysiloxane composition

一种聚氧化烯、聚硅氧烷的技术

Active Publication Date: 2012-08-15
DOW CORNING TORAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, solid acids are insoluble in water and organic solvents, which complicates the subsequent washing steps

Method used

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  • Production method of deodorized polyoxyalkylene-modified polysiloxane composition
  • Production method of deodorized polyoxyalkylene-modified polysiloxane composition
  • Production method of deodorized polyoxyalkylene-modified polysiloxane composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0177] The bottle containing 100 mL of ultra-high purity alcohol (A) was opened and 4.30 g of special reagent grade trichloroacetic acid was immediately added to the bottle. The bottle was then recapped and thereafter mixed by shaking to achieve homogeneity and produce an alcoholic solution of trichloroacetic acid with an acid concentration of 4.3% (wt / vol). This solution was designated as "trichloroacetic acid solution (1A)". The production process was carried out within 1 hour before the absorbance measurement.

Embodiment 2A

[0179] Open the bottle containing 100 mL of ultra-high-purity alcohol (A) and immediately add 50 mg of 2,4-dinitrophenylhydrazine (a special reagent grade product containing an equivalent amount of water, hereinafter referred to as "2,4- DNPH"). The bottle was then recapped and 2,4-DNPH was completely dissolved in ultra-high purity alcohol (A) by holding in an ultrasonic cleaner for 5 minutes to produce a 0.025% (wt / vol) 2,4-DNPH alcoholic solution. This solution was designated as "2,4-DNPH solution (2A)". The production process was carried out within 1 hour before the absorbance measurement.

Embodiment 3A

[0181] The bottle containing 100 mL of ultra-high purity alcohol (A) was opened and 4.0 g of potassium hydroxide (pellet, special reagent grade) was immediately added to the bottle. The bottle was then recapped; mixed by shaking until the globules had disappeared; and potassium hydroxide was then completely dissolved in the ultra-high purity alcohol (A) by holding in an ultrasonic cleaner for 10 minutes to yield 4.0% (wt / vol ) Alcoholic solution of potassium hydroxide. This solution was designated as "Potassium Hydroxide Solution (3A)". The production process was carried out within 1 hour before the absorbance measurement.

[0182] [ Measurement of carbonyl value ]

[0183] 2.00 g of the sample and 23.00 g of ultra-high-purity alcohol (A) were introduced into a 50-mL screw cap bottle and mixed to prepare 25.00 g of a sample solution (Sa) having a sample concentration of 8% by mass. The compositions obtained in Comparative Examples 1, 3, 4, 5, and 6 had very high carbonyl ...

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Abstract

To provide a method of producing a polyoxyalkylene-modified polysiloxane composition that is free of acid-mediated carbon-oxygen bond and silicon-oxygen bond cleavage, that is substantially deodorized and also does not generate odor with elapsed time, and that is therefore well suited for use in cosmetic applications, e.g., for hair cosmetics, skin cosmetics, and so forth. A production method of this invention is characterized by removing the odor-causing substance from a polyoxyalkylene-modified polysiloxane composition that has been synthesized by a hydrosilylation reaction, by subjecting the polyoxyalkylene-modified polysiloxane composition to a hydrolysis treatment in the presence of an acidic inorganic salt that is a solid at 25 DEG C and gives a specific pH at 25 DEG C in aqueous solution; for example, potassium hydrogensulfate.

Description

technical field [0001] The present invention relates to a method for producing a deodorant polyoxyalkylene-modified polysiloxane composition and to cosmetic ingredients and cosmetic materials comprising the deodorant polyoxyalkylene-modified polysiloxane composition. More particularly, the present invention relates to a method for producing a polyoxyalkylene-modified polysiloxane composition that generates little odor over time, to a cosmetic ingredient comprising a deodorant composition provided by the production method, and to and A very low odor cosmetic material incorporated into a deodorant composition provided by the production method. Background technique [0002] Polyoxyalkylene-modified polysiloxanes have hitherto been synthesized by a hydrosilylation reaction between an organohydrogenpolysiloxane having silicon-bonded hydrogen groups and a polyoxyalkylene having an allyl ether group at the terminal position combination. However, the polyoxyalkylene-modified polys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/34C08G77/46A61K8/894
CPCA61K8/894A61Q1/02A61Q17/04A61Q19/00C08G77/34C08G77/46C08G77/32C08L83/04
Inventor 早田达央田村诚基
Owner DOW CORNING TORAY CO LTD
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