Drop-in substitute for dichlorodifluoromethane refrigerant

Details Drop-in substitute for dichlorodifluoromethane refrigerant Drop-in substitute for dichlorodifluoromethane refrigerant

1992-06-18

1993-06-01

Skane, Christine

Refrigeration

Processes

Employing diverse materials or particular material in...

252 67, C09K 504

Patent

active

052149293

ABSTRACT:
A novel ternary mixture of refrigerants that can be drop-in substituted for dichlorodifluoromethane (R-12), but that, unlike dichlorodifluoromethane, causes very little ozone damage, comprising approximately 2 to 20 % by weight isobutane (R-600a), approximately 41 to 71% by weight chlorodifluoromethane (R-22), and approximately 21 to 51 by weight chlorodifluoroethane (R-142b), with the weight percentages being of the overall mixture.

REFERENCES:
patent: 4303536 (1981-12-01), Orfeo et al.
patent: 4482465 (1984-11-01), Gray
patent: 4510064 (1985-04-01), Ermak
patent: 4810403 (1989-03-01), Bivens et al.
W. R. Woolrich, "Handbook of Refrigerating Engineering," Appendix II, Avis Publishing Company, Inc., 1965.
"Hawley's Condensed Chemical Dictionary" (11th ed. 1987), p. 265.
1988-1989 Aldrich Chemical Company, Inc. catalog, p. 334.

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