| abstract |
Polyurethane (PU) reaction adhesives (I), containing (a) polyols with 2 or more OH groups or polyamines with 2 or more amino groups, (b) di- and poly-isocyanates with 2 or more NCO groups, (c) catalysts for the poly-addition reaction, (d) catalysts for crosslinking and foam production, (e) optionally pigments, (f) optionally moisture-binders, (g) optionally reinforcing fillers, (h) optionally non-reinforcing fillers, (i) organo-hydrogen-polysiloxanes with 2 or more Si-H groups, (j) catalysts for silicone crosslinking, (k) organopolysiloxanes with 2 or more functional groups and (l) optionally stabilisers and emulsifiers. Also claimed are (i) adhesive primer coatings based on (I) between silicones and plastics or ceramic materials, and (ii) a process for the production of adhesive primer coatings, by roughening the substrate, coating with (I) and then applying the silicone. |