Improvements in coating a substrate with an ionomer

Details Improvements in coating a substrate with an ionomer Improvements in coating a substrate with an ionomer

A - Human Necessities

01

N

A01N 25/26 (2006.01)

Patent

CA 2150357

The present invention relates to a process for the encapsulation of a solid substrate with a neutralized sulfonated polymer, which comprises the steps of: (a) forming a solution of a non-conjugated, diene polymer in a hydrocarbon solvent; (b) contacting the solution of the unsaturated polymer with a sulfating agent to form a solution of a sulfonated polymer containing free acid; (c) forming a solution of a base of alkali metal hydroxides in alcohol/hydrocarbon; (d) adding thc solution of base to the solution of sulfonated polymer to neutralize the polymer and the free ncid, thereby forming a coating solution; (c) contacting the solid substrate with the conting solution while removing the solvent therefrom, thereby forming an encapsulated substrate.

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