(TW201604223) 所描述者為包含核心及外層之可固化矽倍半氧烷聚合物，該核心包含第一矽倍半氧烷聚合物，該外層包含鍵結至該核心之第二矽倍半氧烷聚合物。 該核心、外層、或上述者之組合的矽倍半氧烷聚合物包含烯系不飽和基團。 該核心之第一矽倍半氧烷聚合物係經由鍵結至三個氧原子之矽原子來鍵結至該外層之第二矽倍半氧烷聚合物。 在一些實施例中，該外層相較於該核心具有較高濃度之烯系不飽和基團。 在此實施例中，該核心可為實質上不含烯系不飽和基團。 在其他實施例中，該核心相較於該核心具有較高濃度之烯系不飽和基團。 在此實施例中，該外層可為實質上不含烯系不飽和基團。 該核心及外層各自包含不同矽倍半氧烷聚合物之三維分枝網絡。 該核心及外層之矽倍半氧烷聚合物可為均聚物或共聚物。 亦描述者為製備可固化矽倍半氧烷聚合物(包含核心及鍵結至該核心之外層)、包含可固化或經固化組成物(包含該矽倍半氧烷核心/外層聚合物)之物品、以及固化之方法。 Curable silsesquioxane polymers are described comprising a core comprising a first silsesquioxane polymer and an outer layer comprising a second silsesquioxane polymer bonded to the core. The silsesquioxane polymer of the core, outer layer, or combination thereof comprises ethylenically unsaturated groups. The first silsesquioxane polymer of the core is bonded to the second silsesquioxane polymer of the outer layer via silicon atoms bonded to three oxygen atoms. In some embodiments, the outer layer has a higher concentration of ethylenically unsaturated groups than the core. In this embodiment, the core may be substantially free of ethylenically unsaturated groups. In other embodiments, the core has a higher concentration of ethylenically unsaturated groups than the core. In this embodiment, the outer layer may be substantially free of ethylenically unsaturated groups. The core and outer layer each comprise a three-dimensional branched network of a different silsesquioxane polymer. The silsesquioxane polymers of the core and outer layer may be homopolymers or copolymers. Also described are methods of preparing curable silsesquioxane polymer comprising a core and outer layer bonded to the core, articles comprising curable or cured compositions comprising the silsesquioxane core/outer layer polymers, and methods of curing.
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