Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic oxygen compound
Patent
1996-03-06
1997-06-17
Howard, Jacqueline V.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Organic oxygen compound
252 68, C10M12916
Patent
active
056397194
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a lubricating oil containing aromatic ether compounds.
More specifically, the invention relates to a lubricating oil containing a particular aromatic ether compound, exhibiting excellent compatibility with ozone layer non-depleting hydrogenated fluorocarbons (HFC) such as R-134a that are used as coolant for refrigerators, as well as excellent lubricating property, cleaning property and electrically insulating property.
BACKGROUND ART
Lubricating oils include gear oils for industrial use, engine oils, lubricating oils for refrigerators, lubricating oils for fibers, lubricating oils for rolling, oils for electric insulation and the like oils.
As it has now been urged to operate industrial machinery under ever severe conditions, it has been demanded to produce gear oils for industrial use that are capable of maintaining lubricating property and cleaning property up to high temperature ranges. In a step of baking finish and a step of baking foods, in particular, higher performance is required in regard to lubricating property and cleaning property. For such applications, there have heretofore been used lubricating oils of the types of synthetic hydrocarbons, carboxylic esters and glycols.
However, the synthetic hydrocarbon oils and carboxylic ester oils are not still satisfactory in regard to lubricating property, form carbonates after heated for extended periods of time, and are not capable of playing the role of lubricating oils under high-temperature conditions. On the other hand, the glycol lubricating oils have a merit of forming carbonates in small amounts even after heated for extended periods of time but have insufficient lubricating property and strong hygroscopic property, leaving room for improvement in regard to lubricating property and hygroscopic property.
Accompanying the trend toward producing automotive engines of higher performance, furthermore, it has been urged to produce engine oils that maintain lubricating property, cleaning property and dispersing property at higher temperatures even after used for longer periods of time. If it is attempted to meet such demands by selecting additives, the additives are inevitably used in large amounts bringing about a harmful effect, i.e., sedimentation of a mayonnaise sludge. It has heretofore been attempted to use a mineral oil as a base oil together with the synthetic hydrocarbon oil or the carboxylic ester oil without, however, satisfactory results in regard to lubricating property, cleaning property and dispersing property when used at high temperatures for extended periods of time. Unlike the lubricating oils for the automotive engines, i.e., for the four-cycle engines, on the other hand, the lubricating oils for the two-cycle engines are burned being added to the gasoline and, hence, its cleaning property is most important. Castor oils and polybutenes have heretofore been used as lubricating oils for the two-cycle engines, but their lubricating property and cleaning property are not still satisfactory.
Gear oils for automobiles and, particularly, gear oils for ATF must have small coefficients of friction and must be aged little. Therefore, there have heretofore been used a friction-reducing agent and a friction-adjusting agent. However, gear oils for automobiles containing these additives still have a problem in that their coefficients of friction change greatly with the passage of time.
So far, lubricating oils of the types of carboxylic ester and glycol have been used for the fibers satisfying, however, neither lubricating property nor cleaning property.
A lubricating oil chiefly consisting of beef tallow has long been used for the rolling. This lubricating oil features excellent lubricating property and rolling efficiency but has very poor cleaning property, making it necessary to carry out the step of cleansing the beef tallow. Moreover, a lubricating oil of the type of carboxylic ester has been used for the rolling featuring very good cleaning property but low practicability because of its
REFERENCES:
patent: 3019187 (1962-01-01), Panzer et al.
patent: 4248726 (1981-02-01), Uchinuma et al.
patent: 4250047 (1981-02-01), Katabe et al.
patent: 4479882 (1984-10-01), Zoleski et al.
patent: 4539128 (1985-09-01), Grossmann et al.
patent: 4851144 (1989-07-01), McGraw et al.
patent: 5403503 (1995-04-01), Seiki et al.
Hayashi Takashi
Hayashi Tetsuo
Ishibashi Masayasu
Mizui Kinya
Oyoshi Hajime
Howard Jacqueline V.
Mitsui Petrochemical Industries Ltd.
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