Patent ID: 8871891

Claim:
A two-part polyurea-urethane adhesive composition comprising a) a Part A prepolymer component having an isocyanate content of about 82 equivalent percent to about 95 equivalent percent comprising i. an isocyanate component comprising polymeric isocyanate and having an oligomer content greater than 15 weight percent by weight of the isocyanate component; ii. polyol having a molecular weight of about 5,000 to about 12,000; and iii. about 20 percent to about 44 percent weight percent filler by weight of the composition b) a Part B curative component comprising i. polyol having molecular weight of about 70 to about 12,000; ii. at least one sterically hindered aromatic diamine; iii. about 20 percent to about 44 percent filler by weight of the composition; and iv. at least one catalyst wherein the adhesive has an 85° C. storage modulus greater than about 20 MPa.