摘要:
The purpose of the present invention is to provide a method which is suitable for roughing the surface of a resin form, particularly a method suitable for certainly roughening the surface of an interlayer insulating resin for a multilayer printed circuit board to be prepared by a "build-up" method. The process of the present invention comprises molding a mixture comprising chemical-soluble powder formulated in a resin composition, treating the surface layer of thus obtained resin form with a chemical solution that can dissolve the resin to remove the surface layer of the resin and to expose on the surface of the form at least a part of the powder contained in the form, and subsequently treating the surface with a chemical solution that can dissolve the powder to remove the powder exposed on the surface.
摘要:
The photosensitive resin composition of the present invention uses, as the characteristic feature, a modified epoxy resin product obtained by reacting a novolak epoxy resin with an unsaturated monocarboxylic acid in an amount of 30 to 70 % by mol per equivalent of the epoxy group in the novolak epoxy resin in the presence of a trivalent organic phosphorus compound as the catalyst; deactivating the catalytic action of the organic phosphorus compound; and then reacting the resulting reaction product with a polycarboxylic acid anhydride in an amount of 10 to 70 % by mol per equivalent of the epoxy group in the starting novolak epoxy resin and the modified epoxy resin product having an epoxy group, an unsaturated group and a carboxyl group at a mol ratio of the epoxy group: the unsaturated group: the carboxyl group in the molecule being 30 SIMILAR 70 : 30 SIMILAR 70 : 10 SIMILAR 70, as the base resin.
摘要:
The photosensitive resin composition of the present invention uses, as the characteristic feature, a modified epoxy resin product obtained by reacting a novolak epoxy resin with an unsaturated monocarboxylic acid in an amount of 30 to 70 % by mol per equivalent of the epoxy group in the novolak epoxy resin in the presence of a trivalent organic phosphorus compound as the catalyst; deactivating the catalytic action of the organic phosphorus compound; and then reacting the resulting reaction product with a polycarboxylic acid anhydride in an amount of 10 to 70 % by mol per equivalent of the epoxy group in the starting novolak epoxy resin and the modified epoxy resin product having an epoxy group, an unsaturated group and a carboxyl group at a mol ratio of the epoxy group: the unsaturated group: the carboxyl group in the molecule being 30∩70 : 30∩70 : 10∩70, as the base resin.