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Synthesis of oligomeric poly(silarylene-siloxane-acetylene)'s and their conversion to high temperature plastics, elastomers, and coatings
Synthesis of oligomeric poly(silarylene-siloxane-acetylene)'s and their conversion to high temperature plastics, elastomers, and coatings
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机译:低聚聚(亚芳基-硅氧烷-乙炔)的合成及其向高温塑料,弹性体和涂料的转化
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摘要
The invention comprises a networked polymer comprising the formula: chemistry chemdraw filechemistry mol file;wherein n≧1; wherein n is an average value obtained by averaging all repeating units of the networked polymer; wherein m≧1; wherein Y is a divalent group containing one or more acetylenic groups, one or more ethenyl crosslinks, or both; ;wherein z is the crosslink density; wherein Ar1 and Ar2 are independently selected aromatic groups; and wherein each R is independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl, and combinations thereof. The invention also includes prepolymers and precursors needed to make the networked polymer and processes for making all of the above. The invention also includes a ceramic composition made by pyrolysis of the networked polymer.
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