HEAT SEALING AGENT, LAMINATE BODY USING SAME, AND SOLAR CELL MODULE

• Main Authors: KURIYAMA CHISATO, KITADA MITSURU, CHIYONOBU KAZUHIKO
• Format: Patent
• Language: English; Korean
• Published: 23.10.2014
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES; WORKING-UP

The purpose of the present invention is to provide a heat sealing agent with excellent adhesiveness to any substrate and capable of forming a heat seal layer having wet heat resistance of a level that does not result in decreased adhesiveness due to the influence of heat and water. This invention relates to a heat sealing agent which contains a urethane resin (A), a polyolefin resin (B), a crosslinking agent (C) and an aqueous medium (D). The urethane resin (A) is obtained by reacting a urethane resin having an isocyanate group, with at least one item selected from a group consisting of compounds having a primary amino group, compounds having a hydrazide group, and hydrazines. The crosslinking agent (C) contains an alkylated methylol melamine resin (c1) and an epoxy compound (c2), and either or both of the urethane resin (A) and the polyolefin resin (B) has a functional group which reacts with epoxy groups.