Pentaerythritol cyclic diphosphates and diphosphoramidates
申请人:Michigan Chemical Corporation
公开号:US03978167A1
公开(公告)日:1976-08-31
Organophosphorus compounds of the formula ##EQU1## where X and X.sub.1 are each oxygen or sulfur and Y and Y.sub.1 are each monovalent halogenated oxyaliphatic or oxyalicyclic or ##EQU2## where R and R.sub.1 are each hydrogen, monovalent hydrocarbon or halogenated monovalent hydrocarbon, Are disclosed herein. The compounds are useful as flame-retardants for polymers.