公开(公告)号：US6025305A

公开(公告)日：2000-02-15

申请号：US128727

申请日：1998-08-04

申请人： Haven Scott Aldrich ,  John Stephen Szobota ,  Robert Jay Wittenbrink

发明人： Haven Scott Aldrich ,  John Stephen Szobota ,  Robert Jay Wittenbrink

IPC分类号： C10G45/58 ,  C10G45/72 ,  C10G71/00 ,  C10M105/04 ,  C10N20/00 ,  C10N30/02 ,  C10N30/10 ,  C10N70/00 ,  G01N33/28 ,  C10M109/00 ,  C10M101/02

CPC分类号： G01N33/2888 ,  G01N33/2805 ,  C10G2400/10

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。