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1. CA2106591 - REVETEMENTS AVEC POLYMERES NEUTRALISES CARBOXYLES, RETICULES PAR DES LIENS IONIQUES ET COVALENTS

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]
PCT/US92/00054
CLAIMS:
1. A composite comprising:
(a) a substrate; and
(b) a polymeric coating adhered to at least one surface of said substrate, said polymer coating having a thickness of about 1 to about 100 micrometers, wherein said polymer coating comprises an ionically and covalently crosslinked neutralized carboxylated polymer having a carboxylate content or about 5 to about 300 meq. per 100 grams of said covalently crosslinked neutralized carboxylated polymer, wherein the carboxylated polymer is characterized by the structure:
wherein y is about 0.1 to about 30 mole percent, and x+y equals 100 mole percent; R is hydrogen or a methyl or an ethyl group; and wherein M+ is selected from the group consisting of ammonium, amine counterions and metal counterions.
2. The composite according to claim 1 wherein M+ is an ammonium counterion.
3. The composite according to claim 1 wherein M+ is selected from the group consisting of transition metal ions and ions of Group IA, IIA, IB and IIB of The Periodic Table of the
Elements.
4. The composition of claim 3 wherein M+ is zinc ion.
PCT/US92/00054
5. The composition according to claim 4 wherein the substrate is urea.
6. The composition according to claim 3 wherein the substrate is a nutrient.
7. The composition according to claim 3 wherein the substrate is a pesticide.
8. A method for treating seeds or plants which comprises placing in close proximity thereto a composite comprising (i) a substrate selected from the group consisting of fertilizers, pesticides, herbicides, nutrients and mixtures thereof, and (ii) a polymeric coating adhered to at least a portion of the surface of the substrate, said coating having a thickness of about 1 to 100 micrometers and comprising an ionically and covalently crosslinked, neutralized carboxylated polymer having a carboxylate content of about 5 to about 300 meg./100 grams of said carboxylated polymer, wherein the carboxylated polymer is characterized by the structure:
wherein y is about 0.1 to about 30 mole percent, and x+y equals 100 mole percent; R is hydrogen or a methyl or an ethyl group; and wherein M+ is selected from the group consisting of ammonium, amine counterions and metal counterions.
9. The method of claim 8 wherein the substrate comprises a fertilizer.