Methacrylic acid ester polymer, method for producing same, active energy ray-curable composition, and optical recording medium
US10927198B2 · kind B2 · utility
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Key dates
| Filing date | Dec 14, 2012 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Sep 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31699
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A cured product that is reduced in warping and has high hardness can be obtained from an active energy ray-curable resin composition which uses a methacrylic acid ester polymer that has an acid value of 50 mg KOH/g or less and a transition metal content of 1 ppm or less, while containing 80% by mole or more of a polymer that has a double bond-terminated structure represented by formula (1). (In formula (1), R represents an alkyl group, a cycloalkyl group or an aryl group.)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.