FLEXIBILIZED POLYURETHANES FOR FLEXIBLE PACKAGING ADHESIVE WITHOUT AROMATIC AMINE MIGRATION
Provided is an adhesive comprising a reaction product of (A1) an aliphatic isocyanate having an NCO group content of 18 to 64 and (A2) a polyol or polyamine having a molecular weight of from 400 to 4000; and (B) a polyaspartate compound, wherein viscosity of the adhesive, as measured @ 23° C. accord...
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| creator | Zeliznik, Raymond Jones, Philip Haider, Karl W Kasardo, Tina |
| description | Provided is an adhesive comprising a reaction product of (A1) an aliphatic isocyanate having an NCO group content of 18 to 64 and (A2) a polyol or polyamine having a molecular weight of from 400 to 4000; and (B) a polyaspartate compound, wherein viscosity of the adhesive, as measured @ 23° C. according to ASTM D4212-16, remains below 60 seconds for after four hours, and wherein the adhesive develops an acceptable bond strength to a substrate, defined as having a minimum of 150 g/in. measured @ 23° C. according to ASTM D 1876-01 or substrate tear, in less than or equal to five days after the substrate is laminated with the adhesive. The adhesives are free of aromatic amines and may find use in multi-layered laminated films for the production of flexible packaging useful in a variety of industries, including the food processing, cosmetics, and detergents industries. |
| format | Patent |
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| subjects | ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY DYES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS PERFORMING OPERATIONS POLISHES TRANSPORTING USE OF MATERIALS AS ADHESIVES |
| title | FLEXIBILIZED POLYURETHANES FOR FLEXIBLE PACKAGING ADHESIVE WITHOUT AROMATIC AMINE MIGRATION |
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