Process for making organotin dihalides and trihalides
US4130573A · kind A · utility
3Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1977 |
| Grant date | Dec 19, 1978 |
| Priority date | — |
| Expiry date | Apr 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/226
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An organotin dihalide having the formula ##STR1## OR A MIXTURE OF THE DIHALIDE AND AN ORGANOTIN TRIHALIDE IS PREPARED BY REACTING METALLIC TIN WITH AN OLEFIN HAVING THE FORMULA ##STR2## wherein R.sub.1, R.sub.2, and R.sub.4 are hydrogen or a hydrocarbon radical and at least one of R.sub.1 or R.sub.2 contains an oxygen-containing group with a carbonyl group adjacent to the olefinic double bond and Hal is a halogen. The organotin dihalide or mixture thereof with a trihalide is reacted with an acid or mercaptan to produce a stabilizer for polyvinyl chloride polymers and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.