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Method for enhancing the rate of the formation of the reaction product of a carboylic acid and a urea via acid addition

A technology of reaction product, carboxylic acid, applied in chemical instruments and methods, botanical equipment and methods, plant growth regulators, etc., can solve the problems of high ammonia loss of urea, limitation of urea use, high ammonia loss, etc.

Active Publication Date: 2017-08-29
STOLLER ENTERPRISES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, urea suffers from high ammonia losses when used in humid environments
In fact, this shortcoming limited the use of urea for a long time
It is believed that hydrolysis of urea and urease in humid environments results in high ammonia losses

Method used

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  • Method for enhancing the rate of the formation of the reaction product of a carboylic acid and a urea via acid addition
  • Method for enhancing the rate of the formation of the reaction product of a carboylic acid and a urea via acid addition
  • Method for enhancing the rate of the formation of the reaction product of a carboylic acid and a urea via acid addition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 (no catalyst)

[0037] A combination of 3.62 g urea (60.3 mmol) and 5.78 g formic acid was heated at 30° C. for 3 h. Aliquots were taken at 5-15 min intervals for analysis. The test was repeated at 50°C with new starting material.

Embodiment 2

[0038] Embodiment 2 (1% sulfuric acid)

[0039] A combination of 3.62 g urea (60.3 mmol), 5.78 g formic acid and 0.10 g 99% sulfuric acid was heated at 30° C. for 3 h. Aliquots were taken at 5-15 min intervals for analysis. The test was repeated at 50°C with new starting material.

Embodiment 3

[0040] Embodiment 3 (2% sulfuric acid)

[0041] A combination of 3.62 g urea (60.3 mmol), 5.78 g formic acid and 0.19 g 99% sulfuric acid was heated at 30° C. for 3 h. Aliquots were taken at 5-15 min intervals for analysis. The test was repeated at 50°C with new starting material.

[0042] The test results are shown in figure 1 and figure 2 . figure 1 A graph is shown comparing DFU formation at 30°C with different concentrations of sulfuric acid. figure 2 A graph is shown comparing the formation of DFU at 50°C with different concentrations of sulfuric acid.

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Abstract

The present invention is directed to a method for enhancing the rate of formation of the reaction products of a carboxylic acid and a urea having the formula (I) where R1, R2, R3 and R4 are the same or different and are selected from the group consisting of hydrogen, substituted and unsubstituted alkyl, allyl, vinyl and alkoxyl groups having from 1-6 carbon atoms, substituted and unsubstituted phenyl groups and the halides. The rate of formation is enhanced by adding acid to a solution including the carboxylic acid and the urea. Preferably, the reaction product of the present invention is N,N'-diformylurea or N,N'-diacetylurea. These reaction products, e.g., diformylurea, have been found to produce significantly improved growth in a variety of agricultural products when applied to the seed, to the surrounding soil or to the foliage of the emerging plant.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 098,180, filed December 30, 2014, under 35 U.S.C. 119(e), the contents of which are hereby incorporated by reference. technical field [0003] The present invention generally relates to methods of increasing the rate of formation of reaction products of carboxylic acids and ureas, such as substituted ureas, via the addition of acids. The reaction products can be used as agricultural products to improve plant growth. More specifically, the invention relates to the addition of at least one acid to a solution comprising a carboxylic acid and urea. Background technique [0004] Urea, which contains about 46% by weight nitrogen, has long been the preferred nitrogen source for fertilizing soil to promote plant growth. However, urea suffers from high ammonia losses when used in humid environments. In fact this disadvantage limited the use of urea f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C273/18
CPCC07C273/1863A01N47/28C07C275/50A01N25/02A01N25/30
Inventor J·斯托勒R·塞斯
Owner STOLLER ENTERPRISES INC
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