New highly thermally stable carboranylmethyl-containing diorganosiloxane polymers were obtained by polycondensation of equimolar amounts of 1.7-bis[hydroxy(dimethyl)silylmethylene]-m-carborane and bis(dimethylamino)diorganosilanes. It was shown that replacement of 24 to 33 mol % of dimethylsiloxane units in the polymer backbone by methyl(phenyl)siloxane or diphenylsiloxane units containing bulky phenyl groups results in the formation of only amorphous polymers. The polymers are readily soluble in organic solvents and have high thermal stability.

中文翻译：

---

1,7-双[(二甲基)甲硅烷基亚甲基]-间碳硼烷和二有机硅氧烷单元规则交替的聚合物

通过等摩尔量的 1.7-双[羟基（二甲基）甲硅烷基亚甲基]-间碳硼烷和双（二甲氨基）二有机硅烷的缩聚反应，获得了新的高度热稳定的含碳硼基甲基的二有机硅氧烷聚合物。结果表明，聚合物主链中 24 至 33 mol% 的二甲基硅氧烷单元被甲基（苯基）硅氧烷或含有庞大苯基的二苯基硅氧烷单元取代导致仅形成无定形聚合物。该聚合物易溶于有机溶剂并具有高热稳定性。