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US 3,943,164 AGranted
Poly(ether esters) of phthalic acid salts and di(halomethyl) ether
AssigneePhillips Petroleum Company
InventorsDonnie G. Brady, Harold R. Deck, Faber B. Jones, John H. Underwood
Life of this patent
Estimating the term…
Abstract
Poly(ether esters) are prepared by reacting a phthalic acid salt with a di(haloalkyl) ether in a polar solvent using a phosphonium salt catalyst. The resulting poly(ether esters) are useful in olefin polymers to improve dye receptivity.
Claims5
A poly(ether ester) consisting essentially of repeating units as represented by the formula ##SPC4##
- wherein m is an integer sufficient to give said poly(ether ester) a weight average molecular weight of at least 1000, M is selected from ammonium and Group I metals and X is selected from chlorine, bromine, and iodine.
Dependencies are inferred from the claim text.