Process for the production of difluoromethane

Details Process for the production of difluoromethane Process for the production of difluoromethane

2005-01-18

2005-01-18

Pryor, Alton (Department: 1616)

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

Organic compounds

Halogen containing

C570S171000, C570S178000, C570S181000, C570S243000, C570S260000, C570S262000

Reexamination Certificate

active

06844474

ABSTRACT:
The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.

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Patent Abstracts of Japan vol. 18, No. 668 (C-1289), Dec. 16, 1994 and JP,A, 06 263657 (Showa Denko KK), Sep. 20, 1994.
Derwent WPI Acc No: 85-028985-05 Abstract for Showa Denko JP 59225131 (Dec. 18, 1984).

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