The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 1983
Filed:
Jul. 30, 1981
Applicant:
Inventor:
Harvey M Goertz, Marysville, OH (US);
Assignee:
The O. M. Scott & Sons Company, Marysville, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C05C / ;
U.S. Cl.
CPC ...
71 28 ; 71903 ; 71904 ; 564 59 ;
Abstract
Process of preparing a solid controlled release urea-formaldehyde fertilizer composition comprising preparing an aqueous mixture of urea, formaldehyde and ammonia, heating the mixture, acidifying the mixture to initiate methylene urea polymerization and heating to complete methylene urea polymerization and dry the reaction products. The process is carried out under conditions such that the majority of polymeric nitrogen present in the final product consists of short chain methylene urea polymers selected from the group consisting of methylene diurea, dimethylene triurea and mixtures thereof.