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US 5,965,646 AGranted
Thermoset crosslinkable pre-applied adhesive
AssigneeAshland Inc.
InventorDavid B. Norby
Life of this patent
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Abstract
This invention is a preapplied liquid adhesive whose components, when dried and heated, react to form a polymer. Laminates made with the thermoset adhesive withstand exposure to 240.degree. F. (116.degree. C.). The adhesive combines urethane dispersions, carboxyl functional acrylic latices and tertiary amine blocking agent.
Claims6
A reactive thermoset adhesive composition useful for laminating substrates comprising
- a) an acrylic latex having carboxyl functional groups,
- b) a polyurethane dispersion,
- c) a fugitive tertiary amine having a vapor pressure at 20 degrees C. of 1 to 4 mm Hg selected from the group consisting of I) diethylethanolamine, and ii) dimethylethanolamine, and
- d) 1 to 3 parts of a methoxymethyl imino melamine formaldehyde resin.
1 more element
Dependencies are inferred from the claim text.