Monomer of carbonate ester having isopropenylphenyl group
US4980497A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Jun 6, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F12/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyfunctional monomers are disclosed that yield transparent resins having high transparency and excellent surface hardness and heat resistance. The present polyfunctional monomers are represented by the general formula (I): ##STR1## wherein R represents a group having a carbamido group or an oxazolidone group that will be bonded to the dimethylbenzyl group of the formula (I) and an acryl group or methacryl group at the other end. Control of the polymerization of the polyfunctional monomers is easy, and polymerization of the polyfunctional monomers yield and resins having excellent surface hardness, heat resistance, and workability, and having high transparency. The resins are well adapted for use as glazing materials, optical lenses, and optical disc substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.