| 摘要 |
<p>Epoxy resin compositions containing an epoxide-terminated polymer with urethane groups and possibly thiourethane and/or urea groups in the polymer chain(s). Compositions containing (A) epoxide adduct(s) with on average more than one epoxide group, (B) polymer(s) of formula (I), (C) thixotropy modifier(s) based on urea derivatives in a non-diffusing carrier material and (D) heat-activated hardener(s) for epoxy resins. (Structure (I), page 13) X1 = O, S or NH; Y1 = an n-valent residue of a reactive polymer after removing terminal amino, thiol or hydroxyl groups; Y2 = a divalent residue of an aliphatic, cycloaliphatic, aromatic or araliphatic di-isocyanate after removing the NCO groups; Y3 = a residue of a prim. or sec. hydroxyl group-containing aliphatic, cycloaliphatic, aromatic or araliphatic epoxide after removing the OH and epoxide groups; q = 1, 2 or 3; m = 1 or 2; n = 2, 3 or 4 . Independent claims are also included for (1) epoxide-terminated impact modifiers of formula (I) (2) a method (M1) for bonding heat-stable materials, especially metals, by contacting the materials with the above compositions and hardening at 100-220 (preferably 120-200) degreesC</p> |
