C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 163/00 (2006.01) C10M 129/42 (2006.01) C10M 129/93 (2006.01) C10M 141/10 (2006.01) C10M 159/12 (2006.01)
Patent
CA 2381984
Lubricating oil formulations comprising base oil, such sulfur-phosphorous anti- wear/extreme pressure agents and such hindered phenol antioxidants which anti- wear/extreme-pressure agents and hindered phenolic antioxidants are prone to react and form crystals wherein the base oil is characterized as having a saturates content of less than 99 % which base oil is stabilized against the above mentioned crystal formation by the addition of a minor amount of a high molecular weight di- or polycarboxylic acid anhydride, or mixture thereof.
L'invention concerne des formulations d'huile lubrifiante contenant une huile de base, des agents anti-usure/de pression extrême au soufre-phosphore ainsi que des antioxydants phénoliques entravés, lesquels agents anti-usure/de pression extrême et antioxydants phénoliques entravés ont une tendance à réagir et à former des cristaux, dans lesquelles l'huile de base est caractérisée comme ayant une teneur en composés saturés inférieure à 99 %, laquelle huile de base est stabilisée contre la formation de cristaux précités par addition d'une petite quantité d'un acide dicarboxylique ou polycarboxylique de masse moléculaire élevée, d'un anhydride ou d'un mélange de ceux-ci.
Borden Ladner Gervais Llp
Exxonmobil Research And Engineering Company
Holt David Gary Lawton
LandOfFree
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