Phosphate-containing and phosphonate-containing phosphate esters

Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus esters

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Details

558163, 558164, C07F 914, C07F 942

Patent

active

048868957

ABSTRACT:
There are disclosed multiphosphorus-containing compounds comprising phosphonate-containing or phosphate-containing phosphate esters. The compounds can be prepared by: (a) reacting a phosphonate-containing or phosphate-containing alcohol with phosphorus pentoxide following by reaction with an epoxide, (b) reacting a phosphonate-containing or phosphate-containing alcohol with a phosphorus oxyhalide, hydrolyzing any phosphorus halogen bonds and then reacting the resulting phosphoric acid derivative with an epoxide, (c) transesterifying a phosphonate-containing or phosphate-containing alcohol with a dialkyl phosphite, oxidizing the resulting compound to yield a phosphoric acid derivative and reacting the phosphoric acid derivative with an epoxide. The compounds are useful as flame retardant additives for polyurethanes and textiles.

REFERENCES:
patent: 4697030 (1987-09-01), Hardy et al.

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