Polyurethane adhesive compositions
AssigneeTakeda Chemical Industries, Ltd.
InventorsShigetoshi Sasano, Teruo Hori, Kyuya Yamazaki
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Abstract
A polyurethane adhesive composition prepared by incorporating phosphorus oxy acid or a derivative thereof, an amine compound and an epoxy resin into an organic polyisocyanate and an organic polyol. The polyurethane adhesive composition is employed in the manufacture of composite films by lamination of various plastic films, metal foils and so forth. The composition is excellent in adhesive properties, acid resistance and hot water resistance.
Claims12
In a polyurethane adhesive composition which comprises an organic polyisocyanate and an organic polyol, the improvement wherein the composition also contains by weight based on the weight of the composition (a) from about 0.01 to 10% by weight of an oxy acid of phosphorus or derivative thereof, (b) from about 0.01 to 10% by weight of at least one amine compound selected from the group consisting of ethylenediamine, dibutylamine, diethanolamine, morpholine, piperidine and piperazine or said amine compound in a form chemically bound to an oxirane and (c) from about 0.1 to 50% by weight of an epoxy resin.
Dependencies are inferred from the claim text.