FIELD: organic chemistry, polymers, fertilizers.
SUBSTANCE: invention relates to new anionic, biodegradable, water-soluble polymers and their derivatives that can be used in agriculture. Invention describes a water-soluble biodegradable polymer comprising repeating dicarboxylic polymeric links consisting of at least two different fragments taken among fragment group A, B and C (see appendix). Above indicated polymeric links are formed by fragments A, B and C. Also, invention relates to a method for its preparing. Invention describes a fertilizer wherein its particles are in the tight contact with the indicated polymer. Also, invention discloses a method for improving the plant growth by using the composition comprising the indicated polymer, a method for reducing nitrogen evolving from the fertilizer by applying the indicated polymer, a method for enhancing availability of phosphorus involving a stage for applying the indicated polymer on fertilizer. Also, invention describes the composition for enhancing the plant growth, the priming product wherein the primer in the tight contact with polymer, and a method for enhancing abrasive stability of the solid fertilizer. Polymers prepared by such method show the significant effect on enhancing availability of phosphorus from ammonium-phosphorus fertilizers, promote to the plant growth enhancing and enhance the abrasive stability of fertilizer particles.
EFFECT: valuable properties of polymers.
16 cl, 7 tbl, 26 ex
