Anionic polymers composed of dicarboxylic acids and uses thereof
AssigneeSpecialty Fertilizer Products, LLC
InventorsJohn Larry Sanders, Grigory Mazo, Jacob Mazo
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Abstract
Biodegradable anionic polymers are disclosed which include recurring polymeric subunits preferably made up of dicarboxylic monomers such as maleic anhydride, itaconic anhydride or citraconic anhydride. Free radical polymerization is used in the synthesis of the polymers. The polymers may be complexed with ions and/or mixed with fertilizers or seeds to yield agriculturally useful compositions. The preferred products of the invention may be applied foliarly or to the earth adjacent growing plants in order to enhance nutrient uptake by the plants.
Claims25
A fertilizer product comprising a fertilizer in combination with a polymer comprising recurring polymeric subunits each made up of at least two different moieties individually and respectively taken from the group consisting of B and C moieties, where moiety B is of the general formula
- and moiety C is of the general formula
- wherein each R7 is individually and respectively selected from the group consisting of H, OH, C1-C30 straight, branched chain and cyclic alkyl or aryl groups, C1-C30 straight, branched chain and cyclic alkyl or aryl based ester groups, R′CO2 groups, OR′ groups and COOX groups, wherein R′ is selected from the group consisting of C1-C30 straight, branched chain and cyclic alkyl or aryl groups and X is selected from the group consisting of H, the alkali metals, NH4 and the C1-C4 alkyl ammonium groups, R3 and R4 are individually and respectively selected from the group consisting of H, C1-C30 straight, branched chain and cyclic alkyl or aryl groups, R5, R6, R10 and R11 are individually and respectively selected from the group consisting of H, the alkali metals, NH4 and the C1-C4 alkyl ammonium groups, Y is selected from the group consisting of Fe, Mn, Mg, Zn, Cu, Ni, Co, Mo, V and Ca, and R8 and R9 are individually and respectively selected from the group consisting of nothing (i.e., the groups are non-existent), CH2, C2H4, and C3H6.
A method of enhancing the growth of plants comprising the step of applying to said plants or the earth adjacent said plants a growth-enhancing amount of a composition comprising a polymer, said polymer comprising of recurring polymeric subunits each made up of at least two different moieties individually and respectively taken from the group consisting of B and C moieties, where moiety B is of the general formula
- and moiety C is of the general formula
- wherein each R7 is individually and respectively selected from the group consisting of H, OH, C1-C30 straight, branched chain and cyclic alkyl or aryl groups, C1-C30 straight, branched chain and cyclic alkyl or aryl based ester groups, R′CO2 groups, OR′ groups and COOX groups, wherein R′ is selected from the group consisting of C1-C30 straight, branched chain and cyclic alkyl or aryl groups and X is selected from the group consisting of H, the alkali metals, NH4 and the C1-C4 alkyl ammonium groups, R3 and R4 are individually and respectively selected from the group consisting of H, C1-C30 straight, branched chain and cyclic alkyl or aryl groups, R5, R6, R10 and R11 are individually and respectively selected from the group consisting of H, the alkali metals, NH4 and the C1-C4 alkyl ammonium groups, Y is selected from the group consisting of Fe, Mn, Mg, Zn, Cu, Ni, Co, Mo, V and Ca, and R8 and R9 are individually and respectively selected from the group consisting of nothing (i.e., the groups are non-existent), CH2, C2H4, and C3H6.
A seed product comprising a seed in combination with a polymer comprising recurring polymeric subunits each made up of at least two different moieties individually and respectively taken from the group consisting of B and C moieties, where moiety B is of the general formula
- and moiety C is of the general formula
- wherein each R7 is individually and respectively selected from the group consisting of H, OH, C1-C30 straight, branched chain and cyclic alkyl or aryl groups, C1-C30 straight, branched chain and cyclic alkyl or aryl based ester groups, R′CO2 groups, OR′ groups and COOX groups, wherein R′ is selected from the group consisting of C1-C30 straight, branched chain and cyclic alkyl or aryl groups and X is selected from the group consisting of H, the alkali metals, NH4 and the C1-C4 alkyl ammonium groups, R3 and R4 are individually and respectively selected from the group consisting of H, C1-C30 straight, branched chain and cyclic alkyl or aryl groups, R5, R6, R10 and R11 are individually and respectively selected from the group consisting of H, the alkali metals, NH4 and the C1-C4 alkyl ammonium groups, Y is selected from the group consisting of Fe, Mn, Mg, Zn, Cu, Ni, Co, Mo, V and Ca, and R8 and R9 are individually and respectively selected from the group consisting of nothing (i.e., the groups are non-existent), CH2, C2H4, and C3H6.
Dependencies are inferred from the claim text.