Process for preparing dimethylhydrogenchlorosilane

Details Process for preparing dimethylhydrogenchlorosilane Process for preparing dimethylhydrogenchlorosilane

1979-01-23

1980-01-01

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604482T, C07F 716, C07F 712

Patent

active

041816730

ABSTRACT:
Single-step, pressureless process for preparing dimethylhydrogenchlorosilane (DMS.dbd.(CH.sub.3).sub.2 HSiCl) with a content of at least 97% by weight, the product being free of unsaturated hydrocarbons, by adding hexachloroplatinic acid in a catalytic amount to the first-run mixture of the direct synthesis of methylchlorosilanes, distilling between 33 and 37.degree. C., the addition of the acid taking place before fractionation is carried out. The so obtained DMS is used for the modification of silicone products, particularly to improve specific parameters, as for instance, resistance to reversion, oil resistance and flame resistance.

REFERENCES:
patent: 2666776 (1954-01-01), Nitzsche et al.
patent: 3155698 (1964-11-01), Nitzsche et al.

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