Lignsulfonate-based graft polymers, their preparation and uses

Details Lignsulfonate-based graft polymers, their preparation and uses Lignsulfonate-based graft polymers, their preparation and uses

C - Chemistry, Metallurgy

08

L

400/1400, 31/19,

C08L 97/00 (2006.01) C08H 6/00 (2010.01)

Patent

CA 1109586

ABSTRACT OF INVENTION The present invention relates to new graft polymers obtained from lignosulfonate and a monomer selected from vinyl benzene, vinyl cyanide, vinyl acetate, vinyl pyridine, vinyl chloride and di-vinyl butadiene and mixtures thereof at a pH between 2 to 6 in the presence of an initiator. The new graft polymers have been found to be very useful as soil conditioners and 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.

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