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US 6,800,712 B2Granted
Starch graft copolymers and method of making and using starch graft copolymers for agriculture
OwnerSteven William Doane, William McKee Doaneinventors
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Abstract
Methods of making and using starch graft copolymers produce particle sizes useful in granule applicators for applying to agricultural fields. Starch graft copolymers on field crops provide excellent anti-crusting properties, increased seed germination and stand, increased crop growth, increased crop yields and reduced water requirements.
Claims6
A method of producing a starch graft copolymer for use in agricultural applications, comprising the steps of:
- providing grafting reactants and a starch;
- graft polymerizing said grafting reactants onto said starch to form a starch graft copolymer;
- saponifying said starch graft copolymer;
- precipitating said starch graft copolymer;
- granularizing said starch graft copolymer to form particles;
- and
- wherein said precipitating step further comprises the step of forming said starch graft copolymer into a plurality of rod-shaped particles.
4 more elements
Dependencies are inferred from the claim text.