Photopolymerizable composition and transparent cured product thereof
US5880170A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Mar 12, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D4/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A photopolymerizable composition comprising: PA1 (I) a photopolymerizable oligomer represented by the following formula (1), ##STR1## and/or by the following formula (2), ##STR2## wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 and R.sup.3 are organic groups, X is oxygen or sulfur, n is a number of not smaller than 1, and m is a number of not smaller than 2, or a combination of the above photopolymerizable oligomer and other ethylenically unsaturated monomer which is copolymerizable therewith; and PA1 (II) a catalytic amount of a photo-initiator, as well as a transparent cured product thereof. The product obtained by curing the photopolymerizable composition exhibits excellent properties and, particularly, excellent surface precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.