Compositions – Vaporization – or expansion – refrigeration or heat or energy...
Patent
1992-02-24
1994-04-19
Skane, Christine
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
62114, C09K 504
Patent
active
053043197
ABSTRACT:
A working fluid comprising tetrafluoroethane, difluoroethane and at least one fluorinated hydrocarbon having a boiling point of not higher than -40.degree. C. under atmospheric pressure selected from the group consisting of methane derivatives and ethane derivatives which consist of one or two carbon atoms, hydrogen atoms and fluorine atoms, which has very small influence on the ozone layer in the stratosphere and is suitable as a substitute working fluid for chlorodifluoromethane.
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patent: 3444085 (1969-05-01), Eiseman
patent: 3640869 (1972-02-01), Orfeo et al.
patent: 3733273 (1973-05-01), Munro
patent: 4810403 (1989-03-01), Bivens et al.
patent: 4971712 (1990-11-01), Gorski
World Patent Index (Latest), Derwent Pub. Lt'd (London)-abstract of JP-A-63-308084 (accession No. 89-035371 [05]), Dec. 1988.
Arita Koji
Funakura Masami
Yoshida Yuji
Matsushita Electric - Industrial Co., Ltd.
Skane Christine
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