Process for producing a curable resin from cyanate ester compound and unsaturated 1,2-epoxy compound
US4533727A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1984 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Apr 3, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31518
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing a curable resin comprises reacting (a) at least one cyanate ester compound selected from the group consisting of polyfunctional cyanate esters having 2 or more cyanato groups per one molecule, prepolymers of the cyanate esters or mixtures thereof with (b) at least one compound having 1,2-epoxy group(s) and radical-polymerizable unsaturated double bond(s) in its molecule, the cyanate ester compound (a) and the compound (b) being used so that the ratio of the cyanato group to the 1,2-epoxy group is in the range of about 1:0.25 to about 1:2, in the presence of (c) a radical polymerization inhibitor at a temperature of about 90.degree.--about 140.degree. C. The curable resin produced according to the present invention is capable of giving cured products having excellent heat resistance and electrical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.