Process for producing a lubricant base oil having improved oxidative
stability
    2.
    发明授权
    Process for producing a lubricant base oil having improved oxidative stability 失效
    具有改善的氧化稳定性的润滑油基础油的制造方法

    公开(公告)号:US6025305A

    公开(公告)日:2000-02-15

    申请号:US128727

    申请日:1998-08-04

    摘要: The instant invention is directed to a process for producing an improved lubricating base stock having a preselected desired oxidation stability comprising the steps of: (a) hydroisomerizing a hydrocarbon wax to obtain a lubricating base stock, (b) irradiating, within the frequency of about 4600 to about 3500 cm.sup.-1 or about 1300 to about 600 cm.sup.-1, said lubricating base stock produced from hydroisomerization of said hydrocarbon wax, (c) measuring the absorption spectrum, within said frequency range of step (b), of said lubricating base stock using FT-IR, (d) converting said absorption spectrum into a number representative of the viscosity index of said lubricating base stock of step (a), (e) comparing the viscosity index produced in step (c) to a preselected viscosity index correlating to a preselected desired oxidative stability for said lubricating base stock of step (a), and then, (f) modifying said hydroisomerization of said hydrocarbon wax to increase the production of lubricating base stock having said preselected desired oxidative stability of step (e).

    摘要翻译: 本发明涉及一种生产具有预选所需氧化稳定性的改进的润滑基料的方法,其包括以下步骤:(a)将烃蜡加氢异构化以获得润滑基础油料,(b)在约 4600至约3500cm -1或约1300至约600cm -1,所述润滑基础油料通过所述烃蜡的加氢异构化产生,(c)在步骤(b)的所述频率范围内测量所述润滑油 (d)将所述吸收光谱转化成代表步骤(a)的所述润滑基料的粘度指数的数字,(e)将步骤(c)中产生的粘度指数与预选粘度 指数与步骤(a)的所述润滑基础油料的预选所需的氧化稳定性相关,然后(f)改变所述烃蜡的所述加氢异构化以增加润滑剂b的产生 具有所述步骤(e)的所需预期氧化稳定性的原料。

    Lubricant base oil having improved oxidative stability
    3.
    发明授权
    Lubricant base oil having improved oxidative stability 有权
    具有改善氧化稳定性的润滑油基础油

    公开(公告)号:US6008164A

    公开(公告)日:1999-12-28

    申请号:US130523

    申请日:1998-08-04

    摘要: The instant invention is directed to a method for producing a lubricating base stock having a preselected oxidative stability comprising the steps of: (a) separating, into a plurality of fractions based on molecular shape, a hydroisomerized hydrocarbon wax, (b) collecting the fractions of step (a) which have the preselected oxidative stability for use as a lubricating base stock, wherein the fractions to be collected are determined by measuring the oxidative stability of each of said fractions of said plurality of fractions to determine which fractions have said preselected oxidative stability. The invention is also directed to an improved lubricating base oil and a formulated lubricating composition using said lubricating base oil.

    摘要翻译: 本发明涉及一种用于生产具有预选氧化稳定性的润滑基料的方法,其包括以下步骤:(a)将基于分子形状的多个馏分分离成加氢异构化的烃蜡,(b)收集馏分 具有预选的用作润滑基料的氧化稳定性的步骤(a),其中通过测量所述多个级分的每个所述级分的氧化稳定性来确定要收集的级分,以确定哪些级分具有所述预选的氧化性 稳定性。 本发明还涉及改进的润滑油基础油和使用所述润滑基础油的配制的润滑组合物。