| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem of a conventional rust-preventive oil composition, which may cause trouble of rust formation because of its insufficient performance of a neutral salt water spray test (JIS K2246) though it requires no degreasing by a solvent to reduce bad influence to heat treatment. <P>SOLUTION: The rust-preventive oil composition with kinematic viscosity of 1-100 mm<SP>2</SP>/s at 40°C is provided when an alcohol derivative of amine represented by a formula (1) is blended in a base oil by an amount of 0.5-25 mass% based on the total amount of the composition. In the formula (1), R<SP>1</SP>is an 8-24C hydrocarbon group which may be a straight/branched chain or a saturated/unsaturated group; and R<SP>2</SP>and R<SP>3</SP>may be the same with or different from each other and are each a 1-12C hydrocarbon group which may be a straight/branched chain or a saturated/unsaturated group. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
