FLAME RETARDER COMPRISING CONDENSED PHOSPHONIC ACID ESTER AND FLAME-RETARDANT RESIN COMPOSITION

摘要

The main objection of the present invention is to provide a halogen-free flame retardant for resins which has a high heat resistance and is capable of exhibiting excellent flame retardance while maintaining a good transparency. The present invention provides a flame retardant for resins which includes a condensed phosphonic acid ester having a specific chemical structure, a flame-retarded resin composition containing the same, and a molded article made from the composition.

主权项

1. A flame retardant for resins, comprising a condensed phosphonic acid ester represented by general formula (I) below:wherein R is an alkylene group, arylene group, cycloalkylene group, heteroalkylene group, heterocycloalkylene group or heteroarylene group, wherein fee group has a total carbon number of from 1 to 11 which may have a substituent.