The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2009
Filed:
Dec. 24, 2003
Tatsuya Egawa, Chiba, JP;
Toshiyuki Tsubouchi, Chiba, JP;
Junko Yoshimoto, Legal Representative, Chiba, JP;
Yoshio Hironaka, Sodegaura, JP;
Tatsuya Egawa, Chiba, JP;
Toshiyuki Tsubouchi, Chiba, JP;
Junko Yoshimoto, legal representative, Chiba, JP;
Yoshio Hironaka, Sodegaura, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
The invention provides a lube base oil other than silicone oil having a kinematic viscosity of 12 mm/s or below at 40° C., exhibiting, in Noack test (250° C., 1 hr), an evaporation loss of 30 mass % or below and/or a flash point of 200° C. or higher, and exhibiting an aniline point of 60° C. or higher. There is also provides a lubricating oil composition comprising the lube base oil mixed with at least one additive selected from the group consisting of an antioxidant, a viscosity index improver, a detergent dispersant, a friction reducing agent, a metal inactivator, a pour point depressant, an abrasion resisting agent, a defoamer, and an extreme-pressure additive. The lube base oil and the lubricating oil composition realize reduction of evaporation loss despite being of low viscosity and excellent compatibility with organic materials.