Oil agent-containing silicone elastomer particle and use thereof in cosmetic composition, etc.

A technology of silicone elastomer and silicone composition, which is applied in the directions of medical preparations, cosmetics and cosmetics containing active ingredients, can solve the problems of handling workability, storage stability, insufficient preparation stability, inability to prepare mixtures, disperse Insufficient and other problems, to achieve the effect of excellent preparation stability, excellent storage stability, and excellent feeling of use

Active Publication Date: 2020-10-09
DOW TORAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When blending highly cohesive silicone particles into a solvent, etc., there are cases where the silicone particles are of primary particle size and are not dispersed but become secondary aggregated particles or aggregates, and cannot be prepared uniformly due to insufficient dispersion. mixture
Therefore, there are problems in that the composition containing silicone particles cannot fully exhibit the characteristics of silicone particles, especially as cosmetic raw materials or organic resin additives, there are problems in handling workability, storage stability, and formulation stability in the system. sexual inadequacy
[0007] However, silicone particles containing such a well-known oily agent are more flexible than ordinary silicone elastomer particles and tend to produce a sticky feeling. If mechanical force is used to redisperse it before, stable formulation cannot be performed, etc., and the handling workability, storage stability, and formulation stability in the system as cosmetic raw materials or organic resin additives become insufficient; When liquid oils are combined and formulated in cosmetics, there is still room for improvement in the texture and usability of the cosmetics

Method used

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  • Oil agent-containing silicone elastomer particle and use thereof in cosmetic composition, etc.
  • Oil agent-containing silicone elastomer particle and use thereof in cosmetic composition, etc.
  • Oil agent-containing silicone elastomer particle and use thereof in cosmetic composition, etc.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0231] [Example 1: C6 crosslinked silicone elastomer particles containing 33% of oil agent 1]

[0232] The polyorganosiloxane represented by the average formula [Chem. 1-2] and the polyorganosiloxane represented by the average formula [Chem. 2-1] were uniformly mixed at room temperature at a mass ratio of 89:11, and further, The oil agent 1 was added and mixed in an amount of 33% of the whole composition (that is, the oil agent content in the silicone elastomer particles containing the oil agent after hardening was 33%) and mixed to obtain Reactive compositions. Next, this composition was dispersed in an aqueous solution at 25° C. consisting of 3.0 parts by mass of polyoxyethylene alkyl (C12-14) ether and 20 parts by mass of pure water, and after being uniformly emulsified by a colloid mill, pure 350 parts by mass of water was diluted to prepare an emulsion containing the crosslinking reactive silicone emulsified particles composed of the above crosslinking reactive silicone ...

Embodiment 2

[0233] [Example 2: C6 crosslinked silicone elastomer particles containing 40% of oil agent 1]

[0234] The oil agent 1 was added in an amount of 40% of the whole composition (that is, the oil agent content in the silicone elastomer particles containing the oil agent after hardening became 40%), and in addition, Silicone elastomer particles containing an oil agent were obtained in the same manner as in Example 1. Table 1 shows physical properties such as JIS-A hardness of the obtained oil-containing silicone elastomer particles.

Embodiment 3

[0235] [Example 3: C6 crosslinked silicone elastomer particles containing 30% of oil agent 1]

[0236] The polyorganosiloxane represented by the average formula [Chem. 1-1] and the polyorganosiloxane represented by the average formula [Chem. 2-1] were uniformly mixed at room temperature at a mass ratio of 89:11, and further, The oil agent 1 was added and mixed in an amount of 33% of the whole composition (that is, the oil agent content in the silicone elastomer particles containing the oil agent after hardening was 33%) and mixed to obtain Reactive compositions. Next, this composition was dispersed in an aqueous solution at 25° C. consisting of 3.0 parts by mass of polyoxyethylene alkyl (C12-14) ether and 20 parts by mass of pure water, and after being uniformly emulsified by a colloid mill, pure 350 parts by mass of water was diluted to prepare an emulsion containing the crosslinking reactive silicone emulsified particles composed of the above crosslinking reactive silicone ...

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Abstract

The present invention pertains to: an oil agent-containing silicone elastomer particle having a structure in which at least two silicon atoms in the silicone elastomer particle are crosslinked via a silalkylene group having 4-20 carbon atoms, having a structure in which an oil agent being in a liquid state at 40 DEG C is contained in the silicone elastomer particle, and having been prepared preferably by shaping a mixture of the oily agent with a crosslinkable silicone composition into emulsion particles followed by curing; and utilization of the oil agent-containing silicone elastomer particle.

Description

technical field [0001] The present invention relates to a silicone elastomer particle containing an oil agent, which is less oil-absorbing and less likely to aggregate than conventional products, so that it is excellent in handling workability as a raw material for cosmetics, and can impart excellent touch and use to cosmetics. feel. Furthermore, the present invention relates to uses of the silicone elastomer particles containing the oil-containing agent as raw materials for cosmetics, cosmetic compositions, organic resin additives, etc., and a method for producing the silicone elastomer particles containing the oil-containing agent. Background technique [0002] Silicone elastomer particles are obtained by curing an addition reaction-curable silicone composition or a condensation reaction-curable silicone composition, and their particle diameter and oil absorption differ depending on the production method. In general, when the cured product is pulverized into a granular pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/14A61K8/895A61Q1/02A61Q1/04A61Q1/08A61Q1/10A61Q1/12A61Q5/00A61Q17/04A61Q19/00C08G77/50C08L91/00
CPCA61K8/895A61Q1/02A61Q1/04A61Q1/08A61Q1/10A61Q1/12A61Q5/00A61Q17/04A61Q19/00C08L91/00A61K8/891A61K8/0241A61K8/585A61K8/894A61K2800/412A61Q19/08C08G77/12C08G77/20C08L83/04C08G77/46C08G77/80C08L83/14C08K5/56C08L83/00C08L71/02A61K8/0208A61K8/022A61K8/062A61K8/064A61K8/19A61K8/23A61K8/25A61K8/26A61K8/27A61K8/29A61K8/31A61K8/345A61K8/365A61K8/368A61K8/37A61K8/41A61K8/416A61K8/4946A61K8/60A61K8/735A61K8/8117A61K8/8147A61K8/8158A61K8/86A61K8/92A61K8/922A61K8/925A61K2800/10A61Q5/065A61Q19/007
Inventor 脇田万里谷口裕子神崎康枝堀誠司
Owner DOW TORAY CO LTD
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