Oil compositions
    32.
    发明授权
    Oil compositions 失效
    油组成

    公开(公告)号:US5362375A

    公开(公告)日:1994-11-08

    申请号:US689278

    申请日:1991-06-05

    摘要: Oil compositions are disclosed which are substantially undeteriorative even in an oxidizing atmosphere and suitably applicable as lubricating oils, heat transfer oils, heat treating oils and electrical discharge machining oils. The composition is essentially comprised of 100 weight parts of a selected base oil of a mineral or synthetic class and 0.1 to 20 weight parts of a specified oil fraction. The oil fraction is an oil generated from a hydrogenated pitch and distilled to boil at from 160.degree. to 550.degree. C., the pitch being derived by primarily heat-treating and hydrogenating a heavy oil of a petroleum or coal origin, or an oil resulting from secondarily heat-treating the pitch and boiling at from 160.degree. to 550.degree. C.

    摘要翻译: PCT No.PCT / JP90 / 01288 Sec。 371日期1991年6月5日 102(e)日期1991年6月5日PCT 1990年10月4日PCT PCT。 出版物WO91 / 05032 1991年4月18日公开。公开了即使在氧化气氛中也基本上不劣质的组合物,适用于润滑油,传热油,热处理油和放电加工油。 组合物基本上由100重量份的矿物或合成类的选择的基础油和0.1-20重量份的特定的油馏分组成。 油馏分是由氢化沥青产生的油,蒸馏至160℃至550℃,该沥青通过主要对石油或煤原油的重质油进行热处理和氢化,或产生油 从二次热处理沥青并在160℃至550℃下沸腾。