公开(公告)号：GB976921A

公开(公告)日：1964-12-02

申请号：GB3029863

申请日：1963-07-31

Applicant: BASF AG

Inventor： DETMER OTTHEINRICH ,  JUNG JOHANN ,  POHLEMANN HEINZ ,  LEHMANN BERNHARDT ,  HEEL HELMUT ,  WENDT MAX

IPC: C05G3/00

Abstract: A slow-release PKN fertilizer is produced by coating the PKN granules with an aqueous solution of a mixture of 20-80% of an aminoplast precondensate and 80-20% of a polyester of a polyhydric carboxylic acid and a polyhydric alcohol, and curing the resin coating. The aminoplast precondensate may be partly or wholly etherified with methanol. The polyester may be partly precondensed with the aminoplast precondensate. The polyester may be modified by the presence of a C8-22 fatty acid or a C1-18 monohydric alcohol. 5-50% of the polyhydric carboxylic acid of the polyester may be replaced by the C8-22 fatty acid. The solution may also contain a water-miscible organic solvent, a substance to improve the flow and film formation, a corrosion inhibitor, and an aminoplast hardening agent. The solution may contain 30-80% of coating agent. The granules may have a particle size of 4-7 mm. Curing may be effected at 60-150 DEG C. for 2-20 minutes. One or more coatings may be applied. Examples of aminoplast precondensate and polyester constituents are given. Specifications 750,809, 785,645, 815,829, 908,493 and 954,555 are referred to.

公开(公告)号：FR1371412A

公开(公告)日：1964-09-04

申请号：FR943455

申请日：1963-08-01

Applicant: BASF AG

Inventor： DETMER OTTHEINRICH ,  JUNG JOHANN ,  POHLEMANN HEINZ ,  LEHMANN BORIS ,  HEEL HELMUT ,  WENDT MAX

IPC: C05G3/00