A method for producing dust-free, not back ends of granules, in particular of a break in the case of granules, of salts and fertilizers

摘要

Dust-free and non-caking granular materials, especially broken granules from fertilisers and salts are prepared by applying coatings consisting of polymer mixtures. The granular materials have applied to them aqueous suspensions or solutions of a) urea-aldehyde condensation products and/or alkylol ureas and b) polyenes, the amount of solid applied being from 0.3 to 4.0% by weight, based on the amount of granular material.