Semi-crystalline two-part polyurethane adhesives from amorphous components
AssigneeLord Corporation
InventorsTimothy D. Fomes, Kraig L. Turner
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Abstract
Reaction-induced crystallizable two-part polyurethane adhesive compositions formed from amorphous constituents. The two-part adhesive compositions can include a polyol resin comprising at least two functional groups, a mono-functional resin containing one functional group; and an isocyanate resin comprising at least two functional groups Methods of forming adhesive compositions are provided. Applications of such adhesive compositions are provided.
Claims33
A reaction-induced crystallizable two-part polyurethane adhesive composition formed from amorphous constituents comprising:
- a polyol resin comprising at least two functional groups;
- a mono-functional resin containing one functional group;
- and
- an isocyanate resin comprising at least two functional groups,
- wherein the polyol resin and isocyanate resin are included in a first component and a second component, respectively, and wherein the mono-functional resin is contained in one or both of the first and second components such that the first and second components are configured to be mixed to react with each other and the mono-functional resin.
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A method of forming a reaction-induced crystallizable two-part polyurethane adhesive composition, the method comprising:
- combining a first component and second component at a room temperature, wherein the first component comprises a polyol resin comprising at least two functional groups, and the second component comprises an isocyanate resin comprising at least two functional groups, wherein one or both of the first and second components further comprise a mono-functional resin containing one functional group is;
- and
- reacting the first component and the second component to cause the composition to crystallize.
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A reaction-induced crystallizable two-part adhesive composition formed from amorphous constituents comprising:
- a resin comprising at least two reactive functional groups;
- a mono-functional additive containing one reactive functional group;
- and
- a curative comprising at least two reactive functional groups,
- wherein the resin and curative are included in a first component and a second component, respectively, and wherein the mono-functional additive is contained in one or both of the first and second components such that the first and second components are configured to be mixed to react with each other and the mono-functional additive.
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Dependencies are inferred from the claim text.