Mixture of alkyl-phenyl-sulfonates of alkaline earth metals, its application as an additive for lubricating oil, and methods of preparation
US6204226A · kind A · utility
5Cited by
5References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 3, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Jun 3, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2219/046
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Mixture of alkyl phenyl sulfonates of alkaline earth metals having: (a) from 20% to 70% by weight of a linear mono alkyl phenyl sulfonate in which the linear mono alkyl substituent contains from 14 to 40 carbon atoms, preferably from 20 to 24 carbon atoms, and the mole % of the phenyl sulfonate radical fixed on position 1 or 2 of the linear alkyl chain is between 10% and 25%, preferably between 13% and 20%, and (b) from 30% to 80% by weight of a branched mono alkyl phenyl sulfonate in which the branched mono alkyl substituent contains from 14 to 18 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.