PURPOSE: To obtain the titled composition excellent in photosensitivity, thermal properties, electrical insulatability and processability, by mixing a specified compound with an epoxy compound and a photoinitiator or a photosensitizer.
CONSTITUTION: A compound (A) of formula III is obtained by reacting a novolak epoxy resin of formula I (wherein R1 is H or a 1W5C alkyl and n is an integer) with an unsaturated carboxylic acid of formula II (wherein R2 is H or methyl and R3 is H, methyl, cyano, a halogen or carboxymethyl) at about 100°C for 3W8hr in the presence of a catalyst (e.g., trimethylbenzylammonium chloride) and a thermal polymerization inhibitor (e.g., hydroquinone monomethyl ether). Component A is mixed with 0.1W3wt% compound (B) having at least one epoxy group (e.g., novolak epoxy resin) and 0.001W0.3wt% photoinitiator or photosensitizer (C) which can generate free radicals upon irradiation with actinic light (e.g., acetophenone) and the mixture is dissolved in a solvent (e.g., methyl ethyl ketone).
| WO/2022/091916 | CURABLE COMPOSITION |
| WO/2011/001579 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREFOR |
HIYA MASANOBU
MARUYAMA MEGUMI
