Passivating agent composition and method for its preparation
US4326990A · kind A · utility
7Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Feb 14, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/521
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions comprising tin (II) and antimony (III) dihydrocarbylphosphorodithioates are disclosed which are usefully employed to treat metals contaminated catalytic cracking catalysts. A method for the preparation of the tin compound is also disclosed comprising reacting a dihydrocarbyl phosphorodithioic acid with a tin (II) salt of a carboxylic acid to form a reaction product which can be employed in conjunction with the antimony compound without further purification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.