| 摘要 |
Impact modifier with carboxylic acid groups, obtained by a reaction of an intramolecular anhydride of di- or tricarboxylic acid with at least an amphiphilic block copolymer, which has at least a hydroxyl group, is claimed. Independent claims are included for: (1) an another impact modifier, obtained by reacting the impact modifier with at least one polyepoxide; (2) an one-component thermosetting epoxy resin composition comprising at least an epoxy resin A with an average of more than one epoxide group per molecule, at least a hardener B for epoxy resins which is activated by increased temperature, and the impact modifier C; and (3) a process for bonding heat-stable substrates comprising applying the one-component thermosetting epoxy resin compositions on the surface of a heat-stable substrate, preferably a metal, contacting the applied thermosetting epoxy resin with the surface of another heat-stable substrate, preferably a metal, heating the epoxy resin at 100-130, preferably 115-125[deg] C, and hence contacting the two substrates, contacting the thermosetting epoxy resin composition with a washing liquid at 20-100[deg] C, preferably 50-70[deg] C, and heating the composition at 140-220[deg] C, preferably 160-190[deg] C, where the two substrates are same or different. |
