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US 5,143,987 AGranted
Polyurethane reactive adhesive compounds containing finely dispersed polymers
AssigneeBayer Aktiengesellschaft
InventorsEduard Hansel, Heinrich Hess, Gunter Arend, Gerhard Grogler, Richard Kopp
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Abstract
The present invention is directed to a polyurethane reactive adhesive compound comprising: A) one or more polyisocyanates having an inactivated particle surface, B) at least one isocyanate reactive compound having a molecular weight MG.sub.w greater than 400, and C) finely dispersed polymer particles, wherein the polymer is solid at temperatures below 70.degree. C. and has a molecular weight MG.sub.w of at least 3000.
Claims10
A polyurethane reactive adhesive compound comprising:
- A) one or more polyisocyanates having an inactivated particle surface,
- B) at least one isocyanate reactive compound having a molecular weight MG.sub.w greater than 400, and
- C) finely dispersed polymer particles, wherein the polymer is solid at temperatures below 70.degree. C. and has a molecular weight MG.sub.w of at least 3000, and selected from the group consisting of a linear hydroxypolyurethane, a copolyamide, a copolymer of .alpha.-olefins, a polyvinyl alcohol, a polyvinyl formal, a polyvinyl acetal, a substantially linear polyester, a copolymer of acrylonitrile, butadiene and styrene having a polybutadiene content of 0.1 50% by weight, a (co)polymer of polyvinyl chloride, polyethylene, a copolymer of styrene and acrylonitrile.
Dependencies are inferred from the claim text.