Agricultural nutrient containing urea

• US 3,232,740 A
• Filed: 10/24/1962
• Issued: 02/01/1966
• Est. Priority Date: 10/24/1962
• Status: Expired due to Term

• Current Assignee: Jack D De Ment, Kamil Sor, Robert L. Stansbury
• Original Assignee: Jack D De Ment, Kamil Sor, Robert L. Stansbury
• Inventors: KAMIL SOR, Stansbury, Robert L., DE MENT JACK D
• Application Number:
  US04/232,714
• Time in Patent Office: 1,196 Days
• US Class Current: 71/28
• CPC Class Codes: C05C 9/00 Fertilisers containing urea or urea compounds
• CPC Class Codes: C05C 9/005 Post-treatment
• CPC Class Codes: C05G 3/44 for affecting solubility
• CPC Class Codes: C05G 3/90 for affecting the nitrification of ammonium compounds or urea in the soil
• CPC Class Codes: C05G 5/38 layered or coated with wax or resins

Claims

1. AN AGRICULTURAL NUTRIENT COMPOSITION PELLET WHICH CONSISTS ESSENTIALLY OF UREA PARTICLES FROM 6-MESH TO 80MESH SIZE AS THE NUTRIENT MIXED THOROUGHLY WITH 60-MESH TO 120-MESH SIZE PARTICLES OF UREASE INHIBITOR SELECTED FROM THE GROUP CONSISTING OF METHYL-UREA, THIOUREA, SYM-DIMETHYL UREA, UNSYM-DIMETHYL UREA, PHENYL UREA, T-BUTYL UREA, AND N-BUTYL UREA IN A PROPORTION OF 0.01 TO 10.0 WT. PERCENT OF THE UREA TO INHIBIT DECOMPOSITION OF THE UREA IN THE PELLET OF UREASE, SAID NUTRIENT AND SAID UREASE INHIBITOR BEING BOUND AND COATED WITH 3 TO 25% BY WEIGHT BASED ON THE AMOUNT OF UREA OF A SOLID PETROLEUM HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF PARAFFIN WAXES, PETROLEUM ASPHALTS, PETROLEUM RESINS, AND BLENDS THEREOF, SAID NUTRIENT UREASE INHIBITOR AND SOLID PETROLEUM HYDROCARBON FORMING A COMPACT, FIRM, AND STRONG PELLET.