Methylol phosphonates and process for making same

Details Methylol phosphonates and process for making same Methylol phosphonates and process for making same

1975-12-29

1978-08-29

Sutto, Anton H.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260969, 521168, 521180, 528158, C07F 940, C08J 900

Patent

active

041104153

ABSTRACT:
Novel polymethylol polyphosphonates are prepared by reacting a trisubstituted polyphosphite having at least one alkyl group and formaldehyde. The phosphite reactant may contain the requisite hydroxyl functionality [e.g. - heptakis (dipropylene glycol) triphosphite] or the hydroxyl functionality may be introduced by carrying out the reaction in the presence of a polyol, e.g. - glycerol, as a protic solvent. The resulting reaction product is a water-soluble liquid of relatively low viscosity and may be employed without any refining. The thus-formed polyphosphonates can be readily incorporated into either rigid urethane foam formulations to impart flame retardancy or phenolic resins to improve flexibility.

REFERENCES:
patent: 3189635 (1965-06-01), Tieman
patent: 3332893 (1967-07-01), Birum et al.
Kirby et al., "The Organic Chemistry of Phosphorus", Elsevier Publishing Co., New York, (1967), pp. 54-63.
Hudson, "Structure and Mechanism in Organophosphorus Chemistry", Academic Press, New York, (1965), pp. 177-182.
Abramov, "Chem. Abstr.", vol. 49, 6084e (1955).
Ginsburg et al., "Zh. Obsh. Khim.", 30, 3979 (1960).
Ramirez et al., "J. Am. Chem. Soc.", vol. 86, 514, 1964.

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