Process for producing phosphate

Details Process for producing phosphate Process for producing phosphate

2005-12-14

2009-06-02

Parsa, Jafar (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

C558S104000

Reexamination Certificate

active

07541484

ABSTRACT:
The invention relates to a process for producing a phosphate, which includes reacting a phosphorus pentaoxide-containing phosphorylating agent with an organic hydroxy compound, the reaction being carried out at a reaction temperature of 50 to 70° C. until the degree (w) of remaining phosphorus pentaoxide undissolved in a reaction solution, defined by the following equation (1), is reduced to 15 wt % or less:in-line-formulae description="In-line Formulae" end="lead"?W=[1−(AVt−AVp)/AV0]×100  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein W is the degree [wt %] of remaining phosphorus pentaoxide undissolved in a reaction solution; AVtis the acid value [mg KOH/g] of the reaction solution excluding undissolved phosphorus pentaoxide in an arbitrary time; AVpis the theoretical acid value [mg KOH/g] of the phosphorylating agent excluding undissolved phosphorus pentaoxide; and AV0is the theoretical acid value [mg KOH/g] of phosphorus pentaoxide.

REFERENCES:
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