Back to results
US 5,183,905 AGranted
Phenolphthalein bis (dihydrocarbyl phosphate) compounds
AssigneeAkzo N.V.
InventorsAlan M. Aaronson, Danielle A. Bright
Life of this patent
Estimating the term…
Abstract
Phenolphthalein bis(dihydrocarbyl phosphates), optionally substituted with chloro or bromo atoms, can be used as fire retardant additives for polymers.
Claims8
A phenolphthalein bis(dihydrocarbyl phosphate) compound of the formula ##STR2## where R is selected from the group consisting of C.sub.1 -C.sub.20 alkyl, cycloalkyl, C.sub.2 -C.sub.12 alkenyl, and phenyl and --O--A--O--is a phenolphthalein moiety minus its hydroxy hydrogen atoms.
Dependencies are inferred from the claim text.