Polyalkylenecarbonate compositions with improved thermal stability and method for making same
US4303759A · kind A · utility
18Cited by
9References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 12, 1980 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Sep 12, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/36
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyalkylene carbonates are stabilized against oxidative degradation by the inclusion therein of 0.2-10%, preferably 1-5%, of peroxyl-reactive sulphur-containing additive. Such compounds, found to be effective, are 3-t-butyl-4-hydroxy-5-methylphenyl sulfide, diphenyl sulfide, diphenyl sulfoxide, diphenyl sulfone, di-(p-tolyl sulfide) and sulphur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.