| 摘要 |
The invention relates to two-component chemical fastening systems, the A-component containing an unsaturated polyester and a reactive diluent, and the B-component containing a peroxide and an extender, wherein the extender is either a monomeric component according to formula 1 (A-CH=CH-O)n-R or a resinous compound, in which a monomeric component having vinyl ether group(s) has been built-in covalently, and the content of the peroxide in the B-component is from 0.5 to 99 wt.%. In the formula A, R and n are specified as hydrogen or C1-3 alkyl; C1-20 (hetero)-aliphatic with hydroxyl or amino groups, or poly(C2 or 3)glycol with 2-10 glycol units; and 1 to 4, respectively. The resinous compounds with built-in vinyl ether group(s) (0.5 to 50 wt.%, calculated as indicated) are obtained by reaction of a mixture of appropriate amounts of: a) a first compound (HVE) containing at least one hydroxyl group and at least one vinyl ether group, and b) a second compound (D/HIC), being an isocyanate; and c) a third compound (G/P/HP) from (1) C2-6 glycols, (2) C5-20 polyols having 2-5 hydroxyl groups and (3) hydroxyl terminated polyester compounds, not being alkyd resins, having 1-5 free hydroxyl groups and 2-50 monomeric units, or mixtures thereof. The invention also relates to methods for preparing (the B-component) of such two-component chemical fastening systems, as well as to use of the systems for chemical fastening. |
