发明名称 |
Thermally stable phosphorothionates as antioxidant, antiwear, friction reducing and extreme pressure lubricant additives from cashew nut shell liquid |
摘要 |
Phosphorothionate derivatives derived from cashew nut shell liquid (CNSL) for use as an thermally stable antioxidant, antiwear, friction reducing and extreme pressure additive in a lubricant composition are synthesized by the steps of (a) partially hydrogenating distilled technical cashew nut shell liquid with palladium or nickel or platinum catalyst; to hydrogenate the olefinic chain; (b) reacting partially hydrogenated technical cashew nut shell liquid with phosphorus trihalide and sulphur, the reaction being carried out at a temperature ranging from 20 to 220° C. A lubricant containing a major proportion of a material selected from the group consisting of an oil of lubricating viscosity or a grease; and remainder an additive including CNSL phosphorothionate derivative, prepared by the foregoing process.
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申请公布号 |
US6660696(B1) |
申请公布日期 |
2003.12.09 |
申请号 |
US20020189374 |
申请日期 |
2002.06.20 |
申请人 |
INDIAN OIL CORPORATION LIMITED |
发明人 |
RANJAN RAJEEV;ARORA AJAY KUMAR;SARIN RAKESH;TULI DEEPAK KUMAR;VERMA RAM PRAKASH;BHATNAGAR AKHILESH KUMAR |
分类号 |
C07F9/18;C10M137/10;C10M169/00;C10M169/04;(IPC1-7):C10M137/10 |
主分类号 |
C07F9/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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