Poly(neopentyl polyol) ester based coolants and improved...

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 105/38 (2006.01) C09K 5/10 (2006.01) C10M 169/04 (2006.01) F04C 29/02 (2006.01)

Patent

CA 2301623

A synthetic lubricant composition is a blend of a polyol ester blend admixed with effective amounts of an antioxidant, yellow metal pacifier and rust inhibitors. The polyol ester blend includes a major proportion of poly(neopentyl polyol) ester blend formed by reacting poly(pentaerythritol) partial esters with at least one C7 to C12 carboxylic acid mixed with an ester formed by reacting a polyol having at least two hydroxyl groups and at least one C8-C10 carboxylic acid. Preferably, the acids are linear and avoid those which can cause odors during use. Effective additives include secondary arylamine antioxidants, triozole derivative yellow metal pacifier and an amino acid derivative and substituted primary and secondary amine and/or diamine rust inhibitor.

Selon cette invention une composition lubrifiante synthétique est un mélange d'un mélange d'ester de polyol et de quantités suffisantes d'un antioxydant, d'un pacificateur métallique jaune et d'inhibiteurs de rouille. Ce mélange d'ester de polyol renferme une proportion majeure de mélange d'ester de poly(néopentyl polyol) formé en faisant réagir des esters partiels de poly(pentaérythritol) avec au moins un acide carboxylique en C7-C12 mélangé à un ester formé en faisant réagir un polyol contenant au moins deux groupes hydroxyles et au moins un acide carboxylique en C8-C10. Ces acides sont de préférence linéaires et évitent ceux qui peuvent provoquer des odeurs en cours d'utilisation. Parmi les additifs efficaces, on trouve des antioxydants arylamine secondaire, un pacificateur métallique jaune dérivé de triozole, un dérivé d'acide aminé, une amine primaire et secondaire substituée et/ou un inhibiteur de rouille diamine.

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