Environment-friendly polyurethane adhesive resistant to ethyl maltol and preparation method thereof
The invention relates to an environment-friendly polyurethane adhesive resistant to ethyl maltol. The environment-friendly polyurethane adhesive comprises a component A and a component B, wherein thecomponent A is an isocyanate-terminated (NCO-terminated) polyurethane prepolymer; the component B is...
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| creator | RUAN WENHONG FAN PENG CHEN YUCHENG CHEN ZHIGUO HOU GAOMING ZHANG MINGQIU LIN QIUYUN |
| description | The invention relates to an environment-friendly polyurethane adhesive resistant to ethyl maltol. The environment-friendly polyurethane adhesive comprises a component A and a component B, wherein thecomponent A is an isocyanate-terminated (NCO-terminated) polyurethane prepolymer; the component B is a hydroxy-terminated (OH-terminated) polyhydroxy compound, and the component A is mixed with the component B in a mole ratio of NCO to OH of 1.8-2.5. The environment-friendly polyurethane adhesive is used for high-temperature-resistant soft packaging for cooking of foods, the adhesive can be resistant to ethyl maltol, and the situation is prevented that when the ethyl maltol permeates into the adhesive layer, layer separation, breakage and even efficacy loss of a packaging bag are caused, accordingly, the quality of the foods is affected, and health safety of the human body is harmed. The preparation method of the environment-friendly polyurethane adhesive is simple in preparation process,the problem that a solvent |
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The environment-friendly polyurethane adhesive comprises a component A and a component B, wherein thecomponent A is an isocyanate-terminated (NCO-terminated) polyurethane prepolymer; the component B is a hydroxy-terminated (OH-terminated) polyhydroxy compound, and the component A is mixed with the component B in a mole ratio of NCO to OH of 1.8-2.5. The environment-friendly polyurethane adhesive is used for high-temperature-resistant soft packaging for cooking of foods, the adhesive can be resistant to ethyl maltol, and the situation is prevented that when the ethyl maltol permeates into the adhesive layer, layer separation, breakage and even efficacy loss of a packaging bag are caused, accordingly, the quality of the foods is affected, and health safety of the human body is harmed. 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| subjects | ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES |
| title | Environment-friendly polyurethane adhesive resistant to ethyl maltol and preparation method thereof |
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