Microdispersions of hydroxamated polymers
AssigneeCytec Technology Corp.
InventorsHoward Ivan Heitner, Roderick Glyn Ryles
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Abstract
Stable, gel-free, water-in-oil microdispersions comprising a continuous phase of an oil and an emulsifier and a discontinuous phase of an aqueous solution of a hydroxamated vinyl polymer are disclosed. Also disclosed is a method for the production of the above-described microdispersions wherein neutralized hydroxylamide and excess base are reacted with a microdispersion of the vinyl polymer.
Claims27
A stable, gel-free water-in-oil microdispersion comprising 1) a continuous phase of a hydrocarbon oil and an emulsifier which is effective so as to prevent the detrimental agglomeration of polymer micelles and 2) a discontinuous phase comprising micelles of an aqueous solution of an hydroxamated vinyl polymer having a weight average molecular weight of over about 1,000,000 wherein the Solution Viscosity of said microdispersion is at least about 2.0 mpa.s.
A stable, gel-free water-in-oil microdispersion comprising 1) a continuous phase of a hydrocarbon oil and an emulsifier which is effective so as to prevent the detrimental agglomeration of polymer micelles, 2) a discontinuous phase comprising micelles of an aqueous solution of a hydroxamated vinyl polymer having a weight average molecular weight of over about 1,000,000, wherein said hydroxamated vinyl polymer is prepared from a precursor polymer containing reactive groups, and 3) more than about 5 mole % of a base, based on said reactive groups of said precursor polymer.
Dependencies are inferred from the claim text.