POLYCOMPLEXES OF 2-CHLOROETHYLPHOSPHONIC ACID WITH N-CONTAINING POLYMERS AS DEFOLIANTS Russian patent published in 1997 - IPC

FIELD: organic chemistry, polymers. SUBSTANCE: proposed preparations are polycomplexes of 2-chloroethylphosphonic acid with polyhexamethyleneguanidine (metacide) of the formula where: n = 10-850; n/m = 1, 2, and/or polyethyleneimine of the formula where: n = 20-27090; n/m = 1, 2 obtained by mixing aqueous solutions of 2-chloroethylphosphonic acid and metacide (molecular mass is 1.5•10³ - 1•10⁵) or polyethyleneimine (molecular mass is 10⁴ - 1.2•10⁵) at ratio polymer link/2-chloroethylphosphonic acid molecule = 1, 2. Synthesized new preparations are water-soluble, show low toxicity, simple at using. EFFECT: high defoliating activity, prolonged action, increased productivity of harvest. 1 tbl