发明授权
US5196549A Polyethers based on 9,9-bis-perfluoroalkyl-3,6-dihydroxy-xanthene or 9-aryl-9-perfluoroalkyl-3,6-dihydroxy-xanthane 失效
基于9,9-双 - 全氟代烷基-3,6-二羟基 - 呫吨或9-芳基-9-全氟代甲基-3,6-二羟基 - 呫吨的聚醚

Polyethers based on 9,9-bis-perfluoroalkyl-3,6-dihydroxy-xanthene or
9-aryl-9-perfluoroalkyl-3,6-dihydroxy-xanthane
摘要:
Polyethers based on 9,9-bis-perfluoroalkyl-3,6-dihydroxy-xanthene or 9-aryl-9-perfluoroalkyl-3,6-dihydroxy-xanthene and another constituent selected from aryl, sulfone, aryl ketone, benzonitrile, and imide. These polyethers are useful as dielectric films in electronic devices.
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