Process for aminating halomethylated copolymers

Claim 1

A METHOD OF MAKING A SYNTHETIC ANION EXCHANGE AGENT WHICH COMPRISES TREATING A BENZENE-INSOLUBLE COPOLYMER OF AT LEAST 80 PER CENT BY WEIGHT OF A MONOVINYL AROMATIC HYDROCARBON AND NOT MORE THAN 20 PER CENT OF A POLYVINYL AROMATIC HYDROCARBON IN THE FORM OF SOLID SPHEROIDAL BODIES WITH AN ACYCLIC POLYHALOHYDROCARBON CONTAINING FROM 2 TO 3 CARBON ATOMS AND FROM 3 TO 5 HALOGEN ATOMS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE IN THE MOLECULE, REACTING THE COPOLYMER WITH AT LEAST 0.5 MOLECULAR PROPORTION OF A HALOMETHYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF CHLOROMETHYL METHYL ETHER AND BROMOMETHYL METHYL ETHER, PER AROMATIC NUCLEUS IN TH COPOLYMER WHILE THE COPOLYMER IS IN CONTACT WITH, AND SWOLLEN BY, THE ACYCLIC POLYHALO-HYDROCARBON, THE AMOUNTS OF THE POLYHALO-HYDROCARBON AND THE HALOMETHYLATING AGENT RELATIVE TO EACH OTHER IN THE STARTING REACTION MIXTURE BEING WITHIN THE RANGE OF FROM 0.5 TO 4 PARTS BY WEIGTH OF THE POLYHALO-HYDROCARBON PER PART OF THE HALOMETHYLATING AGENT, AND THEREAFTER REACTING THE HALOMETHYLATED COPOLYMER WITH A TERTIARY AMINE IN AMOUNTS SUCH THAT THERE IS PRESENT IN THE REACTION MIXTURE AT LEAST ONE MOLECULAR PROPORTION OF THE TERTIARY AMINE FOR EACH HALOMETHYL RADICAL IN THE COPOLYMER, WHILE THE HALOMETHYLATED COPOLYMER BEADS REMAIN SWOLLEN BY THE ACYCLIC POLYHALO-HYDROCARBON.

Claim 2

A METHOD OF MAKING A SYNTHETIC ANION EXCHANGE AGENT WHICH COMPRISES TREATING A BENZENE-INSOLUBLE COPOLYMER OF AT LEAST 80 PER CENT BY WEIGHT OF A MONOVINYL AROMATIC HYDROCARBON AND NOT MORE THAN 20 PER CENT OF A POLYVINYL AROMATIC HYDROCARBON IN THE FORM OF SOLID SPHEROIDAL BODIES WITH AN ACYCLIC POLYHALOHYDROCARBON CONTAINING FROM 2 TO 3 CARBON ATOMS AND FROM 3 TO 5 HALOGEN ATOMS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE IN THE MOLECULE, REACTING THE COPOLYMER WITH AT LEAST 0.5 MOLECULAR PROPORTION OF A HALOMETHYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF CHLOROMETHYL METHYL ETHER AND BROMOMETHYL METHYL ETHER, PER AROMATIC NUCLEUS IN TH COPOLYMER WHILE THE COPOLYMER IS IN CONTACT WITH, AND SWOLLEN BY, THE ACYCLIC POLYHALO-HYDROCARBON, THE AMOUNTS OF THE POLYHALO-HYDROCARBON AND THE HALOMETHYLATING AGENT RELATIVE TO EACH OTHER IN THE STARTING REACTION MIXTURE BEING WITHIN THE RANGE OF FROM 0.5 TO 4 PARTS BY WEIGTH OF THE POLYHALO-HYDROCARBON PER PART OF THE HALOMETHYLATING AGENT, AND THEREAFTER REACTING THE HALOMETHYLATED COPOLYMER WITH A TERTIARY AMINE IN AMOUNTS SUCH THAT THERE IS PRESENT IN THE REACTION MIXTURE AT LEAST ONE MOLECULAR PROPORTION OF THE TERTIARY AMINE FOR EACH HALOMETHYL RADICAL IN THE COPOLYMER, WHILE THE HALOMETHYLATED COPOLYMER BEADS REMAIN SWOLLEN BY THE ACYCLIC POLYHALO-HYDROCARBON.