The object of the present invention is to provide an organic polymer excellent in heat resistance and chemical resistance and having a low dielectric constant. This object can be achieved by a polyether resin having a repeating unit of following formula (1):
1
wherein R
1
to R
3
independently represent hydrogen atom, a halogen atom, or a substituent, or two of R
1
to R
3
may be mutually bonded to form a ring; R
4
denotes hydrogen atom, an alkyl group with 1 to 10 carbons which may be substituted, a cycloalkyl group with 6 to 10 carbons which may be substituted, an aromatic ring with 6 to 14 carbons which may be substituted, a trialkylsilyl group which may be substituted, or a hydroxyalkyl; and Ar represents a divalent aromatic ring.
本发明的目的是提供一种耐热性和耐化学性优异且介电常数低的有机聚合物。具有下式(1)重复单元的聚醚树脂可实现这一目的:
1
其中 R
1
至 R
3
分别代表氢原子、卤素原子或取代基,或两个 R
1
至 R
3
可相互结合形成一个环;R
4
表示氢原子、可被取代的 1 至 10 个碳原子的烷基、可被取代的 6 至 10 个碳原子的环烷基、可被取代的 6 至 14 个碳原子的芳香环、可被取代的三烷基硅基或羟基烷基;Ar 表示二价芳香环。
US6815523B2
申请人:——
公开号:US6815523B2
公开(公告)日:2004-11-09
Photochemical bromination of arenes. 2. Fluorobenzene derivatives[1]