Thermosetting adhesive and method of making same
AssigneeLear Corporation
InventorConrad Rossitto
Life of this patent
Estimating the term…
Abstract
The present invention provides a low softening temperature, fast-setting adhesive package that exhibits high ultimate temperature performance. These adhesives are particularly useful in the manufacture of bonded furnishings which may require the creation of a bond at a relatively low temperature but maintenance of the bond at relatively high temperatures. A preferred adhesive of the present invention comprises a partially reacted blend of an aliphatic polyester and a trifunctional isocyanate. After curing, the adhesive forms an adhesive composition that exhibits high temperature performance.
Claims15
A thermoplastic/thermoset adhesive which displays hot melt adhesive properties upon initial application and develops enhanced physical properties through moisture cure, said adhesive comprising:
- an at least partially reacted blend of one or more isocyanate-reactive component(s) having an average molecular weight greater than 8000 Da. to about 30,000 Da, and an average functionality of at least 2, with an isocyanate component comprising one or more solid organic polyisocyanates, or mixtures thereof with one or more diisocyanates, said isocyanate component having an average functionality of 2.4 or more, said blend having a branch number of 1.5 or more, at an isocyanate index of from about 150 to about 1500.
Dependencies are inferred from the claim text.