Flame retardants for synthetic resins

Details Flame retardants for synthetic resins Flame retardants for synthetic resins

1978-09-06

1979-05-22

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252 81, 260 459NC, 260 459KA, C08K 551

Patent

active

041559002

ABSTRACT:
A phosphorus-containing flame retardant for synthetic resins is produced by (1) combining suitable amounts of at least one of certain phosphorus oxide compounds, at least one of certain nitrogenous compounds, and hydroxy compounds including dipentaerythritol and at least one hydroxy polyalkylene oxide having a molecular weight not greater than 800 and being selected from compounds having the formula, HO--(R--O).sub.n --H or HO--(R--O).sub.m --R' wherein R is an alkylene or cycloalkylene hydrocarbyl radical having 1 to 7 carbon atoms, n is 3 or greater, m is 2 or greater, and R' is a methyl or ethyl radical, wherein the amount of said at least one hydroxy polyalkylene oxide is no greater than about 30 weight percent of the total hydroxy compounds, and (2) heating the components under such conditions that the resulting product when incorporated into a synthetic resin will not cause significant foaming of the synthetic resin when it is subjected to molding conditions.

REFERENCES:
patent: 3284216 (1966-11-01), Kaplan
patent: 4010137 (1977-03-01), Brady
patent: 4026810 (1977-05-01), Bost

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