Sag resistant two component adhesive and sealant
AssigneeThe Goodyear Tire & Rubber Company
InventorThomas G. Rabito
Life of this patent
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Abstract
An improved two component adhesive whereby said adhesive exhibits sag resistance on a vertical surface substantially immediately after the two components are mixed with adequate gel time for use thereof said two component adhesive being composed of a polyurethane prepolymer component and a curative component mixed at a ratio of 4:1.
Claims6
A two component adhesive composed of a polyurethane prepolymer component having free NCO and a curative component, said curative component being comprised of a mixture of 5 to 15 mols of a reactive hydrogen containing material having 2 to 5 hydroxyls of 100 to 3000 molecular weight and 0.5 to 3.0 mols of a secondary diamine having a molecular weight less than 325 said adhesive being characterized when the components are mixed at a ratio of 4:1 on a weight basis of being sag resistant immediately after mixing and exhibiting a gel time at 24.degree. C. of at least two minutes.
Dependencies are inferred from the claim text.