Patent ID: 9676887
Date: 2017-06-13
CPC Classifications: C08F,C08G,C08L,C09J

Claim:
1. A structural adhesive comprising: A) at least one epoxy resin; B) an elastomeric toughener represented by structure (I) wherein p is from 1.5 to 8; wherein a portion of the A groups comprises a residue after removal from a hydrogen from a hydroxyl group of a hydroxy-functional acrylate or methacrylate; another portion of the A groups comprises a residue of a phenol; Y is a residue of an isocyanate-terminated prepolymer after removal of the terminal isocyanate groups; and Y comprises at least one elastomeric segment; C) one or more epoxy curing agents; D) a liquid rubber-modified epoxy resin, a core-shell rubber, or both a liquid rubber modified epoxy resin and a core-shell rubber; E) a catalyst; and F) a latent free radical initiator that can be activated by radiation or by heating to a temperature of from 80 to 130° C.