Modified dispersant compositions
US5505868A · kind A · utility
7Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1992 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Oct 6, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2227/061
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An oil soluble dispersant composition formed by reacting a basic nitrogen-containing ashless dispersant (i) with at least one dibasic acylating agent, (ii) with at least one phosphorus compound, and (iii) with at least one boron compound, said reactions (i), (ii) and (iii) being conducted concurrently or sequentially in any order such that the initial ashless dispersant is chemically modified via acylation in (i), by phosphorylation in (ii), and by boronation in (iii).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.