Heat-resistant polymers based on maleimides and siloxane-diamines, optionally containing bis (maleimide)-siloxane, and process for their preparation

摘要

The present invention relates to new thermostable polymers containing imide groups. / p & & p & more precisely, these polymers are obtained by reaction between: - (a) one or several n, n -, - maleimides hydrocarbons; - (b) a diamine of general formula: & br / (see appended drawing in bopi) & br / in which x represents: - o -, - s -, - s -, - s - / p & & p & r, r, r, r and r represent each a hydrocarbon radical; x is an integer ranging from 2 to 8; and the sum y, z is between 0 and 100; - (c) optionally, a n, n -, - maleimide a diorganopolysiloxane group arising of the diamine cited above by the action of the maleic anhydride; - (d) optionally one or more monomers other than a bis - imide, and comprising one or more double bonds - carbon curable, -, and optionally a catalyst (e). / p & & p & these polymers are used for the particular embodiment of the moulds and stratified.