Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1978-10-23
1981-12-01
Lander, Ferris H.
Chemistry: fertilizers
Processes and products
Organic material-containing
71 64SC, 405264, 47DIG10, C05G 304
Patent
active
043034381
ABSTRACT:
The present invention relates to a method for improving a soil structure by stabilization of aggregates. According to the invention it is applied to the soil a graft polymer substantially free of monomer, having an intrinsic viscosity below 1 dg/l and a molecular weight below 100,000. The graft polymer is obtained by the exothermic reaction of a water soluble lignosulfonate with a member selected from the group consisting of acrylic acid, methacrylic acid and mixtures thereof. The graft polymers have been found to be also useful as binding reagents for agglomerating single particles of particulate materials.
The graft polymers according to the invention are obtained in the form of an aqueous solution, which may be transformed into a powder by spray drying. As soil conditioners they may be applied by spraying, alone or admixed with fertilizers or pesticides and also combined with the operation of planting and soil stabilization.
REFERENCES:
patent: 2625471 (1953-01-01), Mowry et al.
patent: 2765290 (1956-10-01), Ziegler
patent: 2847392 (1958-08-01), Eck
patent: 3985659 (1976-10-01), Felicetta et al.
Chem. Abstracts-84/73052n, 11/1975, vol. 3 fkovich.
Rozenberg Lev V.
Zaslavsky Dan
Lander Ferris H.
Roberts, Jr. John S.
Technion Research & Development Foundation Ltd.
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