Preparation of bismuth dithiocarbamates
US5631214A · kind A · utility
4Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1995 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Jul 31, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2010/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel method is disclosed for preparation of bismuth dithiocarbamates by an exchange reaction between a bismuth carboxylate and a metal dithiocarbamate. The metal dithiocarbamate can be added to the reaction or prepared in situ by reacting a secondary amine and carbon disulfide in the presence of metal oxide, metal hydroxide or a tertiary amine. The reaction products are useful as extreme pressure additives when incorporated in lubricants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.