| 摘要 |
Solvent-soluble, heat-hardening, non-gelled resins are provided by etherifying a polymethoxy siloxane with an unsaturated hydroxy-functional compound, with some of the methoxy groups of the siloxane being preserved for subsequent cure. This ether is then copolymerized with other ethylenically unsaturated materials to form a copolymer which includes methoxy groups carried by the siloxane in order to improve the elevated temperature cure of the resin. The preparation of an unsaturated ether by a reaction in which alcohol instead of water is removed coupled with subsequent polymerization enables larger proportions of the resinous siloxane material to be incorporated into the resin.
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