STRUCTURAL EPOXY RESIN ADHESIVES CONTAINING CHAIN-EXTENDED ELASTOMERIC TOUGHENERS CAPPED WITH PHENOL, POLYPHENOL OR AMINOPHENOL COMPOUNDS

摘要

Structural adhesives are prepared from a chain extended elastomeric toughener that contains urethane and/or urea groups, and have terminal isocyanate groups that are capped with a phenol, a polyphenol or an aminophenol compound. The adhesives have very good storage stability and cure to form cured adhesives that have good lap shear and impact peel strengths.