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Production method of the alkyl denaturation poly- dimethyl polysiloxane refinement item, the make-up charge raw materials and the make-up charge null below-mentioned general system which contain
Production method of the alkyl denaturation poly- dimethyl polysiloxane refinement item, the make-up charge raw materials and the make-up charge null below-mentioned general system which contain
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机译:烷基变性聚二甲基聚硅氧烷精制品的制造方法,补充装原料和补充装以下所述的通用体系
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摘要
To provide a method for manufacturing a purified product of an alkyl-modified polydimethylsiloxane that is practically odorless and compatible with other cosmetic raw materials. The manufacturing method comprises the steps of: [A] synthesizing an alkyl-modified polydimethylsiloxane by subjecting a hydrosilyl-containing polydimethylsiloxane and an C2-C30 α-olefin to a hydrosilation reaction, and [B] subjecting the crude alkyl-modified polydimethylsiloxane obtained in Step [A] to a treatment of rendering it odorless by a hydrogenation reaction in the presence of a hydrogenation catalyst in an organic solvent (c) that is essentially free of active hydrogen atoms and has a boiling point equal to or greater than 70° C.
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