Two-cycle synthetic lubricating oil

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 111/04 (2006.01) C10M 105/36 (2006.01) C10M 107/08 (2006.01) C10M 107/28 (2006.01)

Patent

CA 2236509

A two-cycle oil composition comprising: (a) 10-20 % of a first synthetic ester base stock oil (a copolymer of an alpha-olefin with an ester of a dicarboxylic acid, viscosity 20 to 50 cSt at 100 ~C); (b) 18-30 % of a second synthetic ester base stock oil (an oxo alcohol ester of a dicarboxylic acid, viscosity 3 to 10 cSt at 100 ~C; (c) 30-40 % of a polybutene polymer (Mn 300-1500); (d) 15- 25 % of a normally liquid solvent (boiling point up to 300 ~C, flash point of 60 ~-120 ~C); (e) 0.2 to 2.0 % of an oil soluble copper compound, and (f) 0 to 5 % of other lubricating oil additives.

L'invention concerne une composition d'huile lubrifiante pour moteurs à deux temps comprenant (a) 10 - 20 % d'une première base synthétique de type ester (un copolymère d'une alpha-oléfine avec un ester d'un acide dicarboxylique, viscosité 20 - 50 cSt à 100·C); (b) 18 - 30 % d'une seconde base synthétique du type ester (ester d'un alcool oxo et d'un acide dicarboxylique, viscosité 3 à 10 cSt à 100·C); (c) 30 - 40 % d'un polymère polybutène (poids moléculaire moyen en nombre 300 - 1500); (d) 15 - 25 % d'un solvant normalement liquide (point d'ébullition pouvant aller jusqu'à 300 ·C, point éclair 60 - 120·C); (e) 0,2 - 2,0 % d'un composé de cuivre soluble dans les huiles; et 0 - 5 % d'autres additifs pour huiles lubrifiantes.

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