ALKYLENE-BRIDGED ALKYL PHOSPHONATES

摘要

Halogen-free, oligomeric or polymeric, alkylene-bridged alkyl phosphonates having the general formula <IMG> where n is a whole number of from 1 to 20; R1 and R5 are each C1 - C6 alkyl; R2 and R4 are each C2 - C10 alkyl and R3 is C2- C10 alkyl. The use of such phosphonates as, or in connection with, a flame-retardant (e.g. for polyurethane foams, resins and composites, epoxy resins, phenolic resins, paints, varnishes or textiles).