CPC C08J 3/24 (2013.01) [B01J 13/043 (2013.01); B01J 13/14 (2013.01); C08K 3/16 (2013.01); C08K 3/28 (2013.01); C08K 5/095 (2013.01); C08K 5/5357 (2013.01); C08J 2305/04 (2013.01); C08J 2305/08 (2013.01); C08K 2003/162 (2013.01)] | 12 Claims |
1. A method of cross-linking polymer molecules, the method comprising:
(a) providing a solution of an acidic chelating agent with a volatile base;
(b) adding at least one source of multivalent cations to form cation-chelate complexes in the solution;
(c) mixing molecules of at least one anionic polymer with the solution of cation-chelate complexes and volatile base; and
(d) vaporizing the volatile base of the solution, thereby disassociating the cation-chelate complexes and releasing multivalent cations and cross-linking the polymer molecules with said multivalent cations.
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