Polyphenylene oxide membrane having chemically bonded coating
First Claim
1. A coated membrane for gas separations, comprisinga. a cross-linked poly(phenylene oxide) polymer substrate membrane containing about 1 to about 7 weight percent nitrogen, andb. a coating on the substrate membrane, said coating being a polymer having groups capable of reacting with the amine groups in the polymer of the substrate membrane to ionically bond the coating to the substrate, said coating being ionically bonded to said substrate.
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Accused Products
Abstract
A coated membrane for gas separations wherein the membrane is made up of an amine cross-linked poly(phenylene oxide) substrate membrane having about 1 to about 7 weight percent nitrogen and a coating on the substrate membrane. The coating is a polymer containing groups capable of reacting with amine groups at the surface of the substrate membrane to ionically or covalently bond the coating to the substrate.
24 Citations
17 Claims
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1. A coated membrane for gas separations, comprising
a. a cross-linked poly(phenylene oxide) polymer substrate membrane containing about 1 to about 7 weight percent nitrogen, and b. a coating on the substrate membrane, said coating being a polymer having groups capable of reacting with the amine groups in the polymer of the substrate membrane to ionically bond the coating to the substrate, said coating being ionically bonded to said substrate.
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8. A coated membrane for gas separations, comprising
a. a cross-linked poly(phenylene oxide) polymer substrate membrane containing about 1 to about 7 weight percent nitrogen, and b. a coating on the substrate membrane, said coating being a polymer having groups capable of reacting with the amine groups in the polymer of the substrate membrane to covalently bond the coating to the substrate, said coating being covalently bonded to said substrate.
Specification