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

• Main Authors: KURIYAMA CHISATO, KITADA MITSURU, CHIYONOBU KAZUHIKO
• Format: Patent
• Language: English; French; Japanese
• Published: 09.01.2014
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; 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; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

The present invention provides a heat sealing agent which contains a urethane resin, a polyolefin resin, a crosslinking agent and an aqueous medium. The urethane resin is obtained by reacting (a1) a urethane resin having an isocyanate group and (a2) a compound having a primary amino group with each other under such conditions that the equivalent ratio of the primary amino group to the isocyanate group, namely (primary amino group/isocyanate group) is 1-2. The crosslinking agent is composed of one or more compounds that are selected from the group consisting of melamine compounds, epoxy compounds, oxazoline compounds, carbodiimide compounds and isocyanate compounds. This heat sealing agent has excellent adhesion to a base, and is capable of forming a heat seal layer that is provided with wet heat resistance sufficient for not causing decrease in adhesion by the influence of heat or the like. Cette invention concerne un agent de thermoscellage qui contient une résine uréthanne, une résine polyoléfinique, un agent de réticulation, et un milieu aqueux. La résine uréthanne est obtenue en faisant réagir (a1) une résine uréthanne ayant un groupe isocyanate avec (a2) un composé ayant un groupe amino primaire dans des conditions telles que le rapport d'équivalence du groupe amino primaire au groupe isocyanate, à savoir (groupe amino primaire/ groupe isocyanate) est de 1 à 2. L'agent de réticulation est constitué d'un ou de plusieurs composés qui sont choisis dans le groupe comprenant les composés de mélamine, les composés époxy, les composés oxazoline, les composés carbodiimide et les composés isocyanate. L'agent de thermoscellage selon l'invention manifeste une excellente adhérence à une base, et est capable de former une couche de thermoscellage ayant une résistance thermique suffisante pour ne pas provoquer une baisse d'adhérence sous l'influence de la chaleur ou autre.