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    • 8. 发明授权
    • ORGANOHYDRIDOSILOXANE RESINS WITH HIGH ORGANIC CONTENT
    • 具有高有机物含量的有机醛硅氧烷树脂
    • EP0977797B1
    • 2006-08-09
    • EP98913372.3
    • 1998-04-02
    • AlliedSignal Inc.
    • HACKER, Nigel, P.LEFFERTS, ScottFIGGE, Lisa
    • C08G77/12C09D183/04H01L21/312
    • H01L21/02126C08G77/12H01L21/02216H01L21/02282H01L21/3122H01L23/5329H01L2924/0002H01L2924/12044H01L2924/00
    • An organohydridosiloxane polymer having a cage conformation, at least approximately 40 Mole percent carbon containing substituents and a dielectric constant of less than about 2.7 is presented. Each silicon atom of the cage polymer is bonded to at least three oxygen atoms and to either a hydrogen atom or an organic substituent. By providing such a caged structure with essentially no hydroxyl or alkoxy substituents, either on the polymer backbone or at terminal silicon atoms, essentially no chain lengthening polymerization can occur in solution. Such organohydridosiloxane resins having a molecular weight in the range from about 400 to about 200,000 atomic mass units were formed using a dual phase solvent system and either a solid phase or phase transfer catalyst to assist the condensation of hydridotrihalosilane with at least one organotrihalosilane.
    • 提出了具有笼形构象的有机氢化硅氧烷聚合物,至少约40摩尔百分数的含碳取代基和介电常数小于约2.7。 笼形聚合物的每个硅原子与至少三个氧原子键合,并与氢原子或有机取代基键合。 通过在聚合物主链上或在末端硅原子上提供基本上不具有羟基或烷氧基取代基的笼状结构,在溶液中基本上不会发生链延长聚合。 使用双相溶剂体系和固相或相转移催化剂形成具有约400至约200,000原子质量单位分子量的此类有机氢化硅氧烷树脂,以帮助氢化三卤代硅烷与至少一种有机三卤硅烷缩合。