Controlled release coated agricultural products
AssigneeSouthwest Research Institute
InventorStephen T. Wellinghoff
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Abstract
Controlled release coated agricultural products comprising agricultural chemicals, seed, or mixtures thereof coated with an environmentally degradable amorphous alkene-sulfur copolymer are disclosed. Also disclosed is the process of making such products, preferably by coating with a molten copolymer and then cooling to harden the coating of copolymer about the agricultural products.
Claims20
A composition comprising a controlled release coated agricultural product comprising an agricultural chemical, seed, or mixture thereof coated with an environmentally degradable amorphous alkene-sulfur copolymer containing dissolved S.sub.8 and pollymeric sulfur.
A process of making a controlled release coated agricultural product comprising an agricultural chemical, seed, or mixture thereof comprising coating said agricultural product with an environmentally degradable and amorphous alkene-sulfur copolymer containing dissolved s.sub.8 and plymeric sulfur, said coating being of a thickness sufficient to control release of said agricultural product due to environmental degradation.
A process of making a controlled release agricultural product comprising a fertilizer, corn, or mixture of fertilizer and corn comprising coating said agricultural product with a molten environmentally degradable amorphous alkene-sulfur copolymer containing dissolved S.sub.8 and ployeric sulfur and cooling said molten copolymer to form a hardened layer thereof about said agricultural product, said coating being of a thickness sufficient to control release of said agricultural product due to microbial degradation.
Dependencies are inferred from the claim text.