Composes organiques

Benzoxazine compounds derivated from phenolphtalein having flame-retardant properties and a process for their preparation

Abstract

La présente invention concerne 3,3'-bis(3,4-dihydro-3-phényl-2H-1,3-benzoxazine-6-yl)-1(3H)- isobenzofuranone et des analogues à base de phénolphtaleine, formaldéhyde et d'une amine primaire. Ces composés, lorsqu'ils se sont durcis pour former des réseaux polymères, sont difficilement inflammables et résistent à de hautes températures. Ces composés peuvent être utilisés spécialement dans la production de cartes de circuits imprimés.
The instant invention relates to 3,3'-bis(3,4-dihydro-3-phenyl-2H-1,3-benzoxazin-6-yl)-1(3H)- isobenzofuranone and analogues based on phenolphthalein, formaldehyde and a primary amine. Such compounds are, when cured to form polymeric networks, difficultly inflammable and resistant to high temperatures. Such compounds may especially be used in the production of printed wiring boards.

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