POLYOXAZOLIDON-KLEBSTOFFZUSAMMENSETZUNG HERGESTELLT AUS POLYEPOXIDEN UND POLYISOCYANATEN

• Main Author: GAN, JOSEPH
• Format: Patent
• Language: German
• Published: 15.09.2005
• Edition: 7
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; BASIC ELECTRIC ELEMENTS; CABLES; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; CONDUCTORS; DYES; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INSULATORS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; PRINTED CIRCUITS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

A resin composition including from about 1 to about 100 weight percent of a thermoplastic oxazolidone ring-containing compound having a molecular weight of at least 5000, which is the reaction product of:a) from about 20 to about 43 weight percent, based on the polyepoxide and polyisocyanate reactants, of a polyisocyanate having an isocyanate-functionality of from about 1.8 to about 2.2;b) from about 80 to about 57 weight percent, based on the polyepoxide and polyisocyanate reactants, of a polyepoxide having an epoxide functionality of from about 1.8 to about 2.2; and optionally,c) a chain extender.The resin composition is used as an adhesive to adhere a copper foil to a prepreg or a laminate, with improved peel strength and Tg.