Organo-tin mercaptides with polysulphanediyl groups
US4001178A · kind A · utility
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2References
7Claims
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Inventors
Key dates
| Filing date | May 10, 1974 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | May 10, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/58
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Organo-tin mercaptides containing polysulphanediyl groups are produced from a mercaptocarboxylic acid, a diorgano-tin derivative and a diol with a polysulphanediyl and, optionally, monoalcohols and mono-organo-tin derivative. Such mercaptides give vinyl chloride polymers improved resistance to yellowing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.