C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 105/38 (2006.01) C10M 105/32 (2006.01) C10M 105/42 (2006.01) C10M 171/00 (2006.01)
Patent
CA 2285547
The invention concerns a refrigerant composition which comprises a chlorine- free hydrofluorocarbon based refrigerant and, mixed with the refrigerant, a lubricant comprising a polyol ester. According to the invention the polyol ester comprises an ester of 2-butyl-2-ethyl-1,3-propane diol, the carboxylic acid residue of which is derived from a linear or branched C4...C18-carboxylic acid or an anhydride thereof, or it is derived from a mixture of linear or branched C4...C18-carboxylic acids or anhydrides thereof. The present invention also concerns novel complex esters of 2-butyl-2ethyl-1,3- propanediol, which contain residues of mono- or bivalent carboxylic acids. The novel esters exhibit good solubility in fluorinated hydrocarbons and excellent lubricating properties.
L'invention concerne une composition frigorigène comprenant un fluide frigorigène à base d'hydrofluorocarbures exempts de chlore, et mélangé avec le frigorigène, un lubrifiant renfermant un polyol ester. Le polyol ester de l'invention comprend un ester de 2-butyl-2-éthyl-1,3-propanediol, dont le reste acide carboxylique est dérivé soit d'un acide carboxylique en C4...C18 linéaire ou ramifié ou d'un anhydride de cet acide, soit d'un mélange d'acides carboxyliques en C4...C18 linéaires ou ramifiés ou d'anhydrides de tels acides. La présente invention concerne également des nouveaux esters complexes de 2-butyl-2-éthyl-1,3-propanediol, qui contiennent des restes acides carboxyliques mono ou bivalents. Ces nouveaux esters présentent une bonne solubilité dans les hydrocarbures fluorés ainsi que d'excellentes propriétés lubrifiantes.
Ankner Kjell
Glad Essi
Koistinen Jari
Rahkola Hakan
Saranpaa Virpi
Neste Chemicals Oy
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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