Polyetherimide compositions, methods of manufacture, and articles prepared therefrom
US10995180B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2016 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Jan 24, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/321
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyetherimide composition includes a polyetherimide and two or more of a residual metal content, a sulfate anion, a phosphate anion, a nitrite anion, a nitrate anion, or a combination including at least one of the foregoing, a residual solvent content, a phosphorus-containing stabilizer, and alkali metal halide, alkaline earth metal halide, alkali metal carbonate, or a combination including at least one of the foregoing, wherein each of the aforementioned components, when present, is included in the composition in a particular amount. The resulting polyetherimide composition exhibits two or more useful properties. The polyetherimide composition can optionally further be combined with a polymer different from the polyetherimide to provide a thermoplastic composition. Methods of making the polyetherimide composition and articles including the polyetherimide composition are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.