Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Production of ammonium potassium polyphosphates
T996001 Production of ammonium potassium polyphosphates
Patent Drawings:Drawing: T996001-2    Drawing: T996001-3    
« 1 »

(2 images)

Inventor: Sheridan, et al.
Date Issued: July 1, 1980
Application: 06/076,007
Filed: September 17, 1979
Inventors: Frederick; Leland L. (Florence, AL)
McCullough; John F. (Florence, AL)
Sheridan; Richard C. (Sheffield, AL)
Assignee: Tennessee Valley Authority (Washington, DC)
Primary Examiner:
Assistant Examiner:
Attorney Or Agent:
U.S. Class: 423/306; 71/36; 71/51; 71/64.1
Field Of Search:
International Class:
U.S Patent Documents:
Foreign Patent Documents:
Other References:









Abstract: Embodiment No. 1. Urea phosphate prepared from wet-process phosphoric acid is heated with monopotassium orthophosphate in a mole ratio of 0.25 to 4.0 at 130.degree. to 200.degree. C. to form an ammonium potassium polyphosphate having an average chain length between 1.2 and 2.5. The ammonium potassium polyphosphate is dissolved in aqueous ammonia to yield concentrated fertilizer solutions containing the three major nutrients and over 50 percent total plant food.Embodiment No. 2. Phosphoric acid containing 54 to 76 percent P.sub.2 O.sub.5 is heated with urea (urea:H.sub.3 PO.sub.4 mole ratio 0.5 to 2.0) and monopotassium orthophosphate (urea:KH.sub.2 PO.sub.4 mole ratio 0.25 to 4.0) at 130.degree. to 200.degree. C. to form an ammonium potassium polyphosphate having an average chain length between 1.2 and 2.5. The ammonium potassium polyphosphate is dissolved in aqueous ammonia to yield concentrated fertilizer solutions containing the three major nutrients and over 50 percent total plant food.
Claim:
Description:
 
 
  Recently Added Patents
Semiconductor device and method for manufacturing the same
Processing circuitry for use with a position sensor
Method of patterning color conversion layer and method of manufacturing organic EL display using the patterning method
Sample analyzing device
TC-83-derived alphavirus vectors, particles and methods
Nucleic acid-based tests for prenatal gender determination
Meat-containing, strip shaped food product and method of making same
  Randomly Featured Patents
Skateboard and related apparatus
Semiconductor device
Apparatus including air blowing and infrared light means for drying ink on a sheet
Scissors
Vehicle alarm system for informing other vehicles of its own presence
Insecticidal composition
Battery mask from radiation curable and thermoplastic materials
Solid state device
Game apparatus
Tricycle