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process for the preparation of thermosetting reaction products and process conditions for the practice of thermostabiele - hardened objects.
process for the preparation of thermosetting reaction products and process conditions for the practice of thermostabiele - hardened objects.
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机译:用于制备热固性反应产物的方法和用于实践热稳定化对象的工艺条件。
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摘要
Thermohardening compositions are produced by reacting (a) a N,N'-bis-imide of unsaturated dicarboxylic acid of formula in which D is a divalent organic radical contg. a C=C double bond and A is a divalent organic radical with at least 2C, (b) amine of formula R(NH2)x in which x is greater than 2; R is an organic radical of valency x, the quantity of bis-imide being 0.55-25 mole per NH2 gp. of the polyamide (c) a monomer other than a bis-imide and contg. =1 polymerisable -CH=C of the vinylic, maleic allylic or acrylic type and may contain other functional gps and the quantity of monomer is 5-50% of the total wt of (a) and (b). (a), (b) and (c) are mixed and heated at 50-180 degrees C and are hardened at 200 degrees-280 degrees C.
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