Photocurable composition, process for producing photocurable resin, and crosslinked product
US6924324B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Mar 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2852
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A photocurable composition is provided which yields an excellent tack-free, hard cured product without any addition of photoinitiators. A photocurable composition which is excellent in storage stability is also provided. The photocurable composition contains a resin having an acryloyl group and a chemical structure element selected from the group consisting of β-diketone groups and β-ketoester groups, wherein the β-diketone group or the β-ketoester group has a tetra-substituted carbon atom between two carbonyl groups, which is capable of generating one or two free radicals under photoirradiation, and the photocurable composition does not increase more than 25% in viscosity when heated at 60° C. for 5 days.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.