| 摘要 |
The adhesion of the coatings to crosslinked organopolysiloxanes, is improved by applying to the surface, before coating or adding to the coating composition a silane containing per molecule (a) at least one amino group that is bonded through one or more carbon atoms via an SiC-linkage and optionally one or more other atoms, to a silicon atom, and (b) at least one silicon-bonded monovalent hydrocarbonoxy radical that is unsubstituted or is substituted by an amino or alkoxy group, and/or a partial hydrolysate thereof. Preferred silanes have the formula [R<2>2N(CH2)mYa(CH2)n]b Si(OR<3>)cR4-b-c in which R denotes optionally substituted hydrocarbon, R<2> denotes hydrogen or optionally substituted hydrocarbon, R<3> denotes unsubstituted or (amino or alkoxy) - substituted hydrocarbon, Y denotes -O- or -N(R<2>)-, a denotes 0 or 1, b and c denote 1 to 3, and m and n denote 1 to 10; for example the silane (CH3O)3Si(CH2)3NH(CH2)2NH2. |
