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    • 4. 发明申请
    • PROCESS FOR PREPARING SHELF-STABLE CURABLE POLYSILAZANES, AND POLYSILAZANES PREPARED THEREBY
    • 制备稳定的可固化多晶硅的方法和制备的多晶硅
    • WO2011079020A1
    • 2011-06-30
    • PCT/US2010/060781
    • 2010-12-16
    • 3M INNOVATIVE PROPERTIES COMPANYYANG, YuMOORE, George, G., I.
    • YANG, YuMOORE, George, G., I.
    • C08G77/62
    • C08G77/62
    • A process for preparing curable oligomeric and/or polymeric polysilazanes comprises (a) forming at least one dihalosilane-base adduct by reacting at least one dihalosilane with at least one base; (b) optionally, combining at least one dihalosilane-base adduct and at least one organodihalosilane; and (c) carrying out ammonolysis of at least one dihalosilane-base adduct or of the resulting combination of at least one dihalosilane-base adduct and at least one organodihalosilane; with the proviso that the base (1) is used for the dihalosilane-base adduct formation in a limited amount that is less than or equal to twice the stoichiometric amount of silicon-halogen bonds in the dihalosilane or (2) is used for the dihalosilane-base adduct formation in excess of this limited amount and, prior to the ammonolysis, the total amount of the resulting reacted and unreacted base is reduced to no more than this limited amount.
    • 制备可固化低聚和/或聚合聚硅氮烷的方法包括(a)通过使至少一种二卤硅烷与至少一个碱反应形成至少一种二卤代硅烷基加合物; (b)任选地,组合至少一种二卤代硅烷基加合物和至少一种有机二卤硅烷; 和(c)进行至少一种二卤硅烷基加合物的氨解或至少一种二卤代硅烷基加合物和至少一种有机二卤代硅烷的组合; 条件是碱(1)用于二卤代硅烷加合物形成,其限制量小于或等于二卤代硅烷中的硅 - 卤键的化学计量量的两倍,或(2)用于二卤代硅烷 - 碱加合物形成超过该有限量,并且在氨解之前,所得到的反应和未反应碱的总量减少到不超过该限制量。