Abstract: A two component low temperature heat transfer composition comprising 18% to 76% by volume of an ether component and 82% to 24% by volume of an alkylbenzene component which composition transfers thermal energy to itself from a material which is to be cooled and maintains a prolonged liquid phase in the temperature range from room temperature of about 68° F. to a very cold ?175° F.; said composition being continually rejuvenated by exposure in alternating cycles to cryogenic or refrigerant materials, such as liquid nitrogen which removes thermal energy from the ether alkylbenzene composition which is maintained in a prolonged liquid phase throughout said temperature range which makes it suitable for use in very cold applications.

Abstract: A two component low temperature heat transfer composition comprising 18% to 76% by volume of an ether component and 82% to 24% by volume of an alkylbenzene component which composition transfers thermal energy to itself from a material which is to be cooled and maintains a prolonged liquid phase in the temperature range from room temperature of about 68° F. to a very cold ?175° F.; said composition being continually rejuvenated by exposure in alternating cycles to cryogenic or refrigerant materials, such as liquid nitrogen which removes thermal energy from the ether alkylbenzene composition which is maintained in a prolonged liquid phase throughout said temperature range which makes it suitable for use in very cold applications.