Lubrication for refrigerant heat transfer fluids

Details Lubrication for refrigerant heat transfer fluids Lubrication for refrigerant heat transfer fluids

C - Chemistry, Metallurgy

10

M

C10M 105/38 (2006.01) C09K 5/04 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2084786

Esters and mixtures of esters of polyhydric alcohols. e.g.. of pentaerythritol, in which at least 22 number percent of the acyl groups in the esters are either branched or contain no more than six carbon atoms, are effective lubricants and/or lubricant base stocks for chlorine-free fluorocarbon refrigerant heat transfer fluids, particularly for chlorine-free heat transfer fluids such as Refrigerant 134a (1,1,1,2-tetrafluoroethane).

Esters et mélanges d'esters d'alcools polyvalents, par exemple, de pentaérythritol, dans lesquels au moins 22 % en nombre des groupes d'acyles dans les esters sont ramifiés ou ne contiennent pas plus de six atomes de carbone. Lesdits esters et mélanges d'esters sont des lubrifiants et/ou des substances de base de lubrifiants efficaces pour les fluides de transfert de chaleur réfrigérants de fluorocarbone exempts de chlore, tout particulièrement pour des fluides de transfert de chaleur exempts de chlore tels que le Réfrigérant 134a (1,1,1,2-tétrafluoroéthane).

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