Crystalline thermoplastic polyimide resin
US8927678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2013 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Feb 5, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic polyimide resin containing a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), a content ratio of the repeating structural unit of formula (2) with respect to the total of the repeating structural unit of formula (1) and the repeating structural unit of formula (2) being from 40 to 70% by mol:wherein R1 represents a divalent group having from 6 to 22 carbon atoms containing at least one alicyclic hydrocarbon structure; R2 represents a divalent chain aliphatic group having from 5 to 12 carbon atoms; and X1 and X2 each independently represent a tetravalent group having from 6 to 22 carbon atoms containing at least one aromatic ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.