Title: Methods of making and using a superabsorbent polymer product including a bioactive, growth-promoting additive
Application Number: 200480040965 Application Date: 2004.12.15
Publication Number: 1906243 Publication Date: 2007.01.31
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C08L3/04;C09K17/00
Applicant(s) Name: Absorbent Technologies Inc. Address:
Inventor(s) Name: Doane William Mckee;Doane Steven William;Savich Mi
Attorney & Agent: lu suhua zheng xia
Abstract:
    A method of and a product formed by entrapping a bioactive, growth-promoting additive in a starch matrix to form a starch-based, superabsorbent polymer product for use in agricultural applications involves (1) graft polymerizing a monomer and a starch to form a starch graft copolymer including a starch matrix; (2) isolating the starch graft copolymer; (3) forming particles of starch graft copolymer; and (4) adding a bioactive, growth-promoting additive such that at least some of the bioactive, growth-promoting additive is entrapped by the starch matrix. Following placement of the starch-based SAP including a bioactive, growth-promoting additive in proximity to a plant, root, seed, or seedling, growth of the plant, root, seed, or seedling is promoted because availability of beneficial nutrients is increased.
Time: 10
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