Patent ID: 8551620

Claim:
A multi-layer aircraft adhesive composition, comprising: (a) a first layer prepared from a first composition comprising a Part A and a Part B, wherein Part A comprises a plasticizer, a crosslinking agent, and an adhesion promoter, wherein Part B comprises a moisture resister and an abrasion resister, and wherein the first layer is substantially sulfide free; and (b) a second layer directly or indirectly formed over at least a portion of the first layer, the second layer prepared from a second composition, comprising a Part C and a Part D, wherein Part C comprises: (i) at least one polythiol functional polymer, (ii) at least one epoxy resin, (iii) at least one sulfur containing material that is different from the at least one polythiol functional polymer, (iv) at least one plasticizer, and (v) at least one filler, wherein Part D comprises: (i) at least one plasticizer, (ii) at least one of manganese dioxide or lead oxide, and (iii) at least one alkaline agent.