The ceramic coat attaching plastic null which can the polysilazane constituent, preparation manner of the polysilazane solution, making use of the constituent for coat and the constituent for the said coat which use the said

摘要

PROBLEM TO BE SOLVED: To obtain a polysilazane compsn. which can be directly applied to a plastic, such as polycarnonate or acrylic resin, without deteriorating the plastic by dissolving polysilazane in a specific alkoxyorganosilane. ;SOLUTION: This polysilazane compdn. is prepd. by dissolving polysilazane having a backbone mainly comprising structural unit represented by formula I (wherein R¹ to R³ are each H, an alkyl, an alkenyl, a cycloakyl, an aryl, a fluoroalkyl, an alkylsilyl, an alkylamino, or an alkoxy provided at least one of them is H) and a number average mol.wt. of 100-50,000 or its modification in at least one alkoxyorganosilane compd. represented by formual II or III (wherein R⁴ and R⁵ are each a 20C or lower alkyl, haloalkyl, alkenyl cycloalky, aryl, alkylsilyl, alkylamino, or alkoxy provided at least one of them is an alkoxy.;COPYRIGHT: (C)1997,JPO