Dialkyltin bis(3-sulfolanylmercaptides) as thermal stabilizers for polyvinyl chloride
US4166815A · kind A · utility
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3References
11Claims
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Assignee
Inventor
Key dates
| Filing date | Jan 23, 1978 |
| Grant date | Sep 4, 1979 |
| Priority date | — |
| Expiry date | Jan 23, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/58
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Dialkyltin bis(3-sulfolanylmercaptides) have been found to be excellent stabilizers against heat degradation of halogen-containing polymer, e.g., polyvinyl chloride. New tin-containing compounds are disclosed along with a process for making the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.