Foamable thermosetting polyurethane structural adhesive compositions and processes for producing the same
First Claim
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1. A process for preparing a thermosetting polyurethane composite comprising dispersing a water-generating curing composition into a polyurethane base resin.
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Abstract
The present invention relates to foamable thermosetting polyurethane structural adhesive composites and compositions and processes for producing the same comprising dispersing a water-generating curing composition into a polyurethane base resin to form a nonactivated adhesive composite, and activating the same by heating to form an adhesive composition. Another aspect of the invention relates to dispersing a water-generating compound and an amine-terminated solid polyamide resin into the polyurethane base resin and heat-activating the same to form an adhesive composition.
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48 Claims
- 1. A process for preparing a thermosetting polyurethane composite comprising dispersing a water-generating curing composition into a polyurethane base resin.
- 23. A thermosetting polyurethane composite comprising a polyurethane base resin and a water-generating curing composition.
- 47. A process for preparing a hot melt adhesive which cures with moisture comprising adding a substance which releases water or forms water upon heating so as to cure a base resin via terminal isocyanate groups.
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