Oil filter clogging preventing agent and oil filter clogging preventing method, and engine oil compositions comprising said oil filter clogging preventing agent
US6403541B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Mar 14, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are a composition for preventing clogging of oil filters for various internal combustion engines, the composition comprising at least one hydroxyl-containing component selected from the group consisting of:compounds represented by the formula (1)R1O—(R2O)m—H  (1) wherein R1 is hydrogen or C1 to C8 alkyl, R2 is C2 to C10 alkylene, m is an integer of 1 to 10, and when m is 2 or more, the two or more R2 groups may be the same or different; andcompounds represented by the formula (2)  wherein R3 is C2 to C4 alkylene, R4 is hydrogen or C1 to C10 alkyl, n is an integer of 0 to 8, and when n is 2 or more, the two or more R3 groups may be the same or different; a method for preventing oil filter clogging using the composition, and an engine oil composition containing the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.