Quenching oil compositions

C - Chemistry – Metallurgy – 21 – D

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C21D 1/58 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2470953

Quenching oil composition comprising (1) an oil having kinematic viscosity (ASTM Test Method D-445) at 40 ~C ranging from about 4 to about 45 mm2sec-1 (about 40 to about 210 Saybolt Universal Seconds (SUS)) and having a saturated content from about 80 % to about 100 %; (2) an aliphatic polyolefin having Mn ranging from about 300 to about 10,000; and (3) at least one member selected from members of the groups consisting of (a) a metal salt of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids and alkaline earth metal salts of hydrocarbyl substituted saligenin derivatives; and optionally, at least one member selected from members of the groups consisting of (b) hydrocarbyl substituted succinic esters, amides, ester- amides, imides, amine salts, acid-esters, acid-amides ester-amine salts, amide- amine-salts and acid-amine salts.

L'invention concerne une composition d'huile de trempe comprenant (1) une huile ayant une viscosité cinématique (procédé d'essai ASTM D-445) à 40 ·C allant d'environ 4 à environ 45 mm?2¿ sec?-1¿ (entre environ 40 et environ 210 secondes Saybolt universel (SUS)) et ayant une teneur saturée allant d'environ 80 % à environ 100 %; (2) une polyoléfine aliphatique dont Mn est compris entre environ 300 et environ 10000; et (3) au moins un élément sélectionné dans les éléments des groupes constitués de (a) un sel métallique de phénols à substitution hydrocarbyle, d'acides salicyliques, d'acides carboxyliques et d'acides sulfoniques et des sels de métal alcalino-terreux de dérivés de saligénine à substitution hydrocarbyle; et éventuellement, au moins un élément sélectionné dans les éléments des groupes constitués de (b) des esters succiniques à substitution hydrocarbyle, des amides, des esters-amides, des imides, des sels d'amine, des acides-esters, des sels acides-amides ester-amine, des sels d'amide-amine et des sels d'acide-amine.

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