Poly(imide-amide) copolymer, a method for preparing a poly(imide-amide) copolymer, and an article including a poly(imide-amide) copolymer
US10240002B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Nov 9, 2016 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Dec 15, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J179/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A poly(imide-amide) copolymer including a structural unit represented by Chemical Formula 1; a structural unit represented by Chemical Formula 2; and any one of a structural unit represented by Chemical Formula 3, an amic acid precursor of the structural unit represented by Chemical Formula 3, and a combination thereof; wherein a cured material of the poly(imide-amide) copolymer may have a tensile modulus of greater than or equal to about 5.5 GPa, and a yellowness index of less than or equal to about 5:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.