Polyakylene glycols useful as lubricant additives for groups I-IV hydrocarbon oils
US8969271B2 · kind B2 · utility
7Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2010 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Mar 18, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/70
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Certain polyalkylene glycols, useful as lubricant additives, are soluble with all four types of hydrocarbon base oils (Groups I-IV) at a wide variety of ratios of oil to polyalkylene glycol and under a variety of conditions. These polyalkylene glycols are prepared by reacting a C8-C20 alcohol and a mixed butylene oxide/propylene oxide feed, wherein the ratio of butylene oxide to propylene oxide ranges from 3:1 to 1:1. The invention provides a means of providing desirable lubricant compositions which may pose fewer environmental problems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.