Polycarbonate compositions having improved barrier properties
US4304899A · kind A · utility
25Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1980 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Jan 16, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polycarbonate compositions having improved barrier properties; i.e., low water vapor transmission and low gas permeability, are obtained by employing selected mono- and di-alkyl substituted monomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.