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US 4,396,555 AGranted
Partial esters of polyphosphoric acid
AssigneeThe Dow Chemical Company
InventorsThomas P. Brady, Horst G. Langer
Life of this patent
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Abstract
Glycol ether partial esters of the formula ##STR1## where R is a specified substituent formed by reaction of monohydroxyl reactants of (poly)glycols with phosphorus pentoxide.
Claims6
Polyphosphoric acid partial esters of the formula ##STR4## wherein R is each occurrence a remnant formed by removal of a hydroxyl from a monohydroxyl compound selected from the group consisting of
- (a) a (poly)glycol monoether of the formula ##STR5## wherein R.sub.1 is hydrogen, methyl, or halomethyl;
- R.sub.2 is C.sub.1-6 alkyl or haloalkyl, phenyl, halophenyl or methylphenyl;
- and n is a number from 1 to 4;
- (b) a phenol or halophenol;
- and
- (c) a C.sub.1-20 alkanol or hydrogenated alkanol;
- provided that in at least one occurrence R is selected from (a);
- m is an integer from zero to three, y is an integer from one to three and q is equal to m+4-y.
5 more elements
Dependencies are inferred from the claim text.