Acidic ion-exchange resin and from those photoresist compositions as a catalyst in order to synthesize the novolak resin

摘要

(57) Abstract This invention, using the solid acidic condensation catalyst, the molecular weight of the fixed range and very low offers the method of producing the water insoluble water alkaline dissolved novolak resin which possesses the metal ion of re be ru. Very low using method and that kind of photoresist composition which produce the photoresist composition which possesses the metal ion of level from that kind of novolak resin, also the method of producing the semiconductor device is offered.