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    • 3. 发明申请
    • ORGANOHYDRIDOSILOXANE RESINS WITH HIGH ORGANIC CONTENT
    • 具有高有机含量的组氨酸硅氧烷树脂
    • WO2004046224A1
    • 2004-06-03
    • PCT/US2003/036353
    • 2003-11-12
    • HONEYWELL INTERNATIONAL INC.HACKER, NigelLEFFERT, ScottFIGGE, Lisa
    • HACKER, NigelLEFFERT, ScottFIGGE, Lisa
    • C08G77/08
    • C08G77/12C08G77/24
    • 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,至少约40摩尔百分比含碳取代基和介电常数小于约2.7的有机氢硅氧烷聚合物。 笼状聚合物的每个硅原子与至少三个氧原子和氢原子或有机取代基结合。 通过提供这样一种基本上没有羟基或烷氧基取代基的笼式结构,无论是在聚合物主链上还是在末端硅原子上,基本上不会在溶液中发生链延长聚合。 使用双相溶剂系统和固相或相转移催化剂形成分子量在约400至约200,000原子质量单位范围内的这种有机氢硅氧烷树脂,以帮助氢三卤代硅烷与至少一种有机三卤代硅烷的缩合。