Processes for producing ethylene glycol phosphate esters and fol

Details Processes for producing ethylene glycol phosphate esters and fol Processes for producing ethylene glycol phosphate esters and fol

1992-11-13

1994-12-13

Bell, Mark L.

Chemistry: fertilizers

Processes and products

Inorganic material

71 27, 71 63, C05C 900

Patent

active

053726278

ABSTRACT:
Processes for the production of ethylene glycol phosphate esters using ethylene glycol and phosphoric acid. These reactants mixed and heated with an esterification promoter which can be an oxide or hydroxide, such as an alkali, alkaline earth or other metal oxide or hydroxide. The mixture can be reacted at atmospheric pressures and temperatures in excess of 150.degree. C., thus speeding the esterification. Boiling is preferred during the reaction to improve water removal. Excess ethylene glycol can advantageously be used to aid in efficient conversion. Excess unreacted ethylene glycol is also significant when the reaction products are used as foliar fertilizers. The cations of some promoters substitute into the esters and can be used to provide secondary or trace elements of nutritional value when the reaction products are used as foliar fertilizers.

REFERENCES:
Chang, Chemistry (1981) pp. 488-491, Random House, N.Y., Williams College.

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