发明授权
- 专利标题： Lubricant base oil, method for production thereof, and lubricant oil composition
- 专利标题（中）： 润滑油基础油，其生产方法和润滑油组合物
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申请号： US12934472申请日： 2009-03-23
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公开(公告)号： US08227385B2公开(公告)日： 2012-07-24
- 发明人: Kazuo Tagawa , Shinichi Shirahama , Masahiro Taguchi
- 申请人： Kazuo Tagawa , Shinichi Shirahama , Masahiro Taguchi
- 申请人地址： JP Tokyo
- 专利权人： JX Nippon Oil & Energy Corporation
- 当前专利权人： JX Nippon Oil & Energy Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Greenblum & Bernstein, P.L.C.
- 优先权： JPP2008-078570 20080325
- 国际申请： PCT/JP2009/055690 WO 20090323
- 国际公布： WO2009/119520 WO 20091001
- 主分类号： C10M169/04
- IPC分类号： C10M169/04 ; C10G71/00
摘要：
The lubricating base oil of the invention has a urea adduct value of not greater than 4% by mass, a kinematic viscosity at 40° C. of 25-50 mm2/s, a viscosity index of 140 or greater, a CCS viscosity at −35° C. of not greater than 15,000 mPa·s and a flash point of 250° C. or higher. The method for producing a lubricating base oil of the invention comprises a step of hydrocracking/hydroisomerizing a feedstock oil containing normal paraffins so as to obtain a treated product having an urea adduct value of not greater than 4% by mass, a kinematic viscosity at 40° C. of 25-50 mm2/s, a viscosity index of 140 or greater, a CCS viscosity at −35° C. of not greater than 15,000 mPa·s and a flash point of 250° C. or higher. The lubricating oil composition of the invention comprises the lubricating base oil of the invention.