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US 4,801,625 AGranted
Bicyclic phosphate ether, ester, and carbonate intumescent flame retardant compositions
AssigneeAkzo America Inc.
InventorsWilliam J. Parr, Arthur G. Mack, Paul Y. Y. Moy
Life of this patent
Estimating the term…
Abstract
A flame resistant composition has (1) an organic polymeric substance (such as polypropylene) in intimate contact with (2) an ether, ester, or carbonate derivative of a bicyclic phosphorous compound (such as pentaerythritol phosphate) and (3) a gas producing compound (such as melamine or ammonium polyphosphate).
Claims41
A flame resistant composition comprising an organic polymeric substance having in intimate contact therewith,
- (a) a char producing amount of a bicyclic phosphorous compound of the formula ##STR3## wherein m=1 to 3;
- n=1 to 3;
- q=1 to 3;
- and R is a C.sub.1 to C.sub.8 aliphatic moiety having a valence of n, such that R completes either an ether, carboxylic acid, ester, or carbonate linkage with the remainder of the molecule;
- and
- (b) a bubble producing amount of a gas producing compound which releases a non-flammable gas upon application of a flame.
3 more elements
Dependencies are inferred from the claim text.