Title:
WORKING FLUID
Document Type and Number:
Japanese Patent JPH03168285
Kind Code:
A
Abstract:
PURPOSE: To provide a working fluid reduced in the affection thereof on the ozone layer of the stratosphere and capable of being employed as a substitute of dichlorodifluoromethane (R12) by containing chlorodifluoromethane, chlorodifluoroethane and dichlorofluoroethane in a specific ratio.
CONSTITUTION: The objective working fluid contains at least three kinds of freons comprising (A) 45-95wt.% (preferably 50-90wt.%) of chlorodifluoromethane (R22), (B) ≤55wt.% (preferably ≤50wt.%) of 1-chloro-1,1-difluoroethane (R142b) and ≤45wt.% of 1,1-dichloro-1-fluoroethane (R141b). The working fluid is employed in freezers, heat pumps, etc.
Inventors:
ARITA KOJI
TOMIZAWA TAKESHI
YOSHIDA YUJI
TOMIZAWA TAKESHI
YOSHIDA YUJI
Application Number:
JP30966789A
Publication Date:
July 22, 1991
Filing Date:
November 29, 1989
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
C09K5/04; (IPC1-7): C09K5/04
Attorney, Agent or Firm:
Shigetaka Awano (1 person outside)