Silane/urea compound as heat-activated hardener for epoxy resin compounds

摘要

Use of a silane compound (I) or substrate, as curing agents for epoxide resins, is claimed, where the surface of the substrates are coated or derivatized with (I) and the curing agents are activatable at elevated temperatures. Use of a silane compound of formula (Z 5>-(N(Z 4>)-C(=X)-N(Z 3>)-A-Si(Z 2>) 3 - a(OZ 1>) a) b) (I) or substrate, as curing agents for epoxide resins, is claimed, where the surface of the substrates are coated or derivatized with (I) and the curing agents are activatable at elevated temperatures. A : 1-4C-alkylene or phenylene; Z 1> : H or 1-4C-alkyl, preferably CH 3 or C 2H 5; Z 2> : H, phenyl or 1-8C-alkyl, preferably CH 3; Z 3> : H or a univalent 1-8C-aromatic or cycloaliphatic or aliphatic group optionally having at least a carboxylic acid ester-, nitrile-, nitro-, phosphonic acid ester-, sulfone or sulfonic acid ester, or A-Si(Z 2>) 3 - a(OZ 1>) a; Z 4> : H or a univalent 1-8C-aromatic or cycloaliphatic or aliphatic group; Z 5> : b-valent aromatic 1-40C-aromatic or cycloaliphatic or aliphatic group, or A-Si(Z 2>) 3 - a(OZ 1>) a; X : O or S; a : 1-3, preferably 2 or 3; and b : 1-4. Provided that: Z 3> or Z 4> is H. Independent claims are included for: (1) the substrate whose surface is coated or derivatized with (I); (2) a silane compound of formula (Z 5>-(N(Z 4>)-C(=X)-N(Z 3>)-A-Si-(OZ 1>) 3) b) (Ia); (3) a heat-cured epoxide resin compositions comprising at least an epoxide resin with an epoxide group per molecule, at least (I) or an inorganic filler, which silicon-, aluminum- and/or calcium-atoms and obtained by heating heat-curable epoxide resin composition; and (4) a process for adhering heat stable substrates, comprising applying the heat-cured epoxide resin compositions on the surface of the heat stable substrate S1, preferably a metal, contacting the surface applied with heat-cured epoxide resin compositions with a surface of a further heat stable substrate S2, preferably a metal, and heating the heat-cured epoxide resin compositions at 100-220[deg] C, preferably 160-190[deg] C, where the material in the substrates S1 and S2 are same or different. Either A : -CH 2-CH 2-CH 2-; and Z 1> : CH 3; and Z 3> : H; Z 4>, Z 5> : CH 3; and X : O; and b : 1; or A : -CH 2-CH 2-CH 2-; and Z 1>, Z 3>, Z 5> : CH 3; and Z 4> : H; and X : O; and b : 1; or A : CH 2; and Z 1> : CH 3 or CH 2CH 3; and Z 3> : H; and Z 4>, Z 5> : an univalent 1-12C-aliphatic group; and X : O; and b : 1.