Polyamideimide resin and optical member including polyamideimide resin
US11274206B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2018 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Jan 15, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a polyamideimide resin for an optical member having both high flexibility and bending resistance, and in particular, a polyamideimide resin for a front plate of an image display apparatus, and an optical member such as a front plate containing the polyamideimide resin.A polyamideimide resin having constitutional units represented by formula (1) and formula (2): in formula (1) and formula (2), X and Z each independently represent a divalent organic group, Y represents a tetravalent organic group, and at least a part of Z is constitutional unit represented by formula (3): in formula (3), R1 to R8 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms, and the hydrogen atoms contained in R1 to R8 may be each independently substituted with a halogen atom, A represents —O—, —S—, —CO— or —NR9—, and R9 represents a hydrocarbon group having 1 to 12 carbon atoms which may be substituted with a halogen atom, m is an integer of 1 to 4, and * represents a bonding hand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.