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US 10,208,153 B2Granted
Adhesive compositions
AssigneeRohm and Haas Company
InventorsPankaj Vinubhai Shah, Kevin Miyake
Life of this patent
Estimating the term…
Abstract
There is provided an adhesive composition comprising (a) a polyisocyanate component comprising (i) monomeric 4,4′ methylene diphenyl diisocyanate and (ii) an isocyanate functional prepolymer that is the reaction product of a prepolymer reactant mixture comprising (A) monomeric 4,4′ methylene diphenyl diisocyanate, and (B) one or more diol having OH equivalent weight of 225 or less, and (C) one or more triol having OH equivalent weight of 1400 or more, and (b) a polyol component comprising one or more polyol.
Claims12
An adhesive composition comprising
- (a) a polyisocyanate component comprising
- (i) a monomeric 4,4′ methylene diphenyl diisocyanate and
- (ii) an isocyanate functional prepolymer that is a reaction product of a prepolymer reactant mixture comprising
- (A) a monomeric 4,4′ methylene diphenyl diisocyanate, and
- (B) one or more diol having OH equivalent weight of 225 or less, and
- (C) one or more triol having OH equivalent weight of 1400 or more,
- wherein said polyisocyanate component has % NCO of 25% or lower;
- and
- (b) a polyol component comprising one or more polyol, wherein the one or more polyol in the polyol component comprises trimethylol propane,
- wherein said composition has a weight ratio of said polyol component to said polyisocyanate component of 0.4:1 to 1.2:1, and
- wherein said adhesive composition contains no catalyst.
8 more elements
Dependencies are inferred from the claim text.