| 摘要 |
<p>1,166,791. Refrigerant. ALLIED CHEMICAL CORP. 9 Jan., 1968 [9 Jan., 1967], No. 1329/68. Heading C4X. A refrigerant composition consists of monochloromonofluoromethane and dichlorotetrafluoroethane, and contains 30 to 80% by weight of the former. The boiling point of such mixtures at atmospheric pressure is about - 12‹ C. The " dichlorotetrafluoroethane " may be either isomer or a mixture.</p> |
