Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus esters
Patent
1989-02-06
1989-12-12
Sutto, Anton H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus esters
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.
Hardy Thomas A.
Walsh Edward N.
Akzo America Inc.
Fennelly Richard P.
Morris Louis A.
Sutto Anton H.
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