Effect of Xylene Formaldehyde Resins on Epoxy Resin Adhesive

Polymer Adhesives—1970

“…Polyether-polyurethanes, particularly based on tetrahydrofuran, are outstanding at cryogenic temperatures, but admittedly suffer at high temperatures (28,64). It is suggested that balanced lowand high-temperature performance in an adhesive can be obtained with a block polymer containing carbamate linkages, and both urethane and aromatic (or heterocyclic) segments (76). A polymeric adhesive comprising these elements showed a reason- able balance of cryogenic and high-temperature strength.…”

“…The ubiquitous epoxides continue under study, with emphasis on attainment of "'quick-cures," and flexibility with retained heat resistance. Xylene formaldehyde resins were found useful as plasticizing diluents for an epoxy adhesive (76). An internally plasticized epoxy resin with good heat resistance is disclosed as the reaction product of an epoxy resin with two polycarboxylic anhydrides, one of which contains an ether oxygen.…”