Process for the preparation of chloromethane using recycled...

Details Process for the preparation of chloromethane using recycled... Process for the preparation of chloromethane using recycled...

2008-05-13

2010-10-19

Carr, Deborah D (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

Reexamination Certificate

active

07816569

ABSTRACT:
The invention relates to a process for the preparation of chloromethane from methanol and hydrogen chloride contaminated with Si compounds, the Si compounds being methylchlorosilanes, methoxymethylsilanes and hydrolysis and condensation products thereof, in which some of the Si compounds are removed by condensation from the chloromethane formed and remaining Si compounds are washed out with methanol, the methanol thus obtained and containing Si compounds being used for the further preparation of chloromethane with hydrogen chloride.

REFERENCES:
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patent: 2 521 742 (1976-11-01), None
patent: 2521742 (1976-11-01), None
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patent: 0 428 166 (1991-05-01), None
patent: 0428166 (1991-05-01), None
Lehnert, R., Nachr. Chem. Tech. Lab 2009(09), 1167-1168.

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