Chelate resins prepared from the cured reaction product of a polyalkylenepolyamine and epoxide
AssigneeThe Dow Chemical Company
InventorEldon L. Ward
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Abstract
Chelate resins are obtained by introducing an effective amount of chelate active groups into the cured reaction product of an epoxide and a polyalkylenepolyamine. For example, an alkali metal salt of a halogenated carboxylic acid such as sodium chloroacetate, is reacted with the reaction product of triethylenetetraamine and diglycidyl ether of bisphenol A to form a chelate resin.
Claims14
A method for preparing chelate resins comprising the step of contacting a cured reaction product of a polyamine of an aliphatic, alicyclic or aromatic hydrocarbon or an inertly substituted aliphatic, alicyclic or aromatic hydrocarbon and a polyfunctional epoxide with an effective amount of an alkali metal acid-salt of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid and alkali metal acid salt of a halogenated carboxylic acid at conditions such that the carboxyl groups of the carboxyl containing compound become pendent to the polymer chain of the cured reaction product.
A method for preparing a chelate resin comprising the steps of (1) diffusing into the cured reaction product of a polyfunctional epoxide and a polyamine of an aliphatic, alicyclic or aromatic hydrocarbon or an inertly substituted aliphatic, alicyclic or aromatic hydrocarbon an effective amount of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid and (2) polymerizing the diffused acid.
A chelate resin comprising a cured reaction product of a polyamine of an aliphatic, alicyclic or aromatic hydrocarbon or an inertly substituted aliphatic, alicyclic or aromatic hydrocarbon and an epoxide having incorporated therein a polyfunctional effective amount of a polymerizate of an alkali metal acid-salt of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid.
A method for preparing a chelate resin, said method comprising the step of attaching an effective amount of carboxyl chelate active groups to a cured reaction product of a polyamine of an aliphatic, alicyclic, or aromatic hydrocarbon or an inertly substituted aliphatic, alicyclic or aromatic hydrocarbon and a polyfunctional epoxide in spheroidal bead form.
Dependencies are inferred from the claim text.