ANIONIC POLYMERS COMPOSED OF DICARBOXYLIC ACIDS AND USES THEREOF
First Claim
1. 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
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Accused Products
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.
39 Citations
23 Claims
- 1. 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
- 9. 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
- 17. 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
Specification