Novel sulfur-containing polyetherimides
US4429102A · kind A · utility
11Cited by
5References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 10, 1983 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Jan 10, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1067
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel polyetherimides containing sulfone units such as those derived from bis(3,4-dicarboxyphenyl) sulfone dianhydride, as well as units derived from an ether anhydride such as 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride, may be prepared by the reaction of a mixture of said dianhydrides with diamines such as m-phenylene diamine. The polyetherimides have high thermal stability and solvent resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.