Synthesis of alkyl tribenzanoate
AssigneeSabic Global Technologies B.V.
InventorsRitesh Nandy, Vishal Patrick, Edward Joseph Nesakumar
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Abstract
A method of making alkyl tribenzanoates includes combining a phenyl tricarboxylic acid or chemical equivalent thereof with greater than or equal to 3.5 molar equivalents of a C4-C18 alkyl alcohol, based on the amount of phenyl tricarboxylic acid or chemical equivalent thereof, in the presence of 0.05 to 0.20 mol % of a titanium tetra-alkoxide catalyst, based on the total moles of phenyl tricarboxylic acid or chemical equivalent, at a temperature greater than 210° C. to form a reaction mixture having an acid value less than or equal to 0.5 as determined according to ASTM D1045.
Claims20
A method of making alkyl tribenzanoates comprising:
- combining a phenyl tricarboxylic acid or chemical equivalent thereof with greater than or equal to 3.5 molar equivalents of a C4-C18 alkyl alcohol, based on the amount of phenyl tricarboxylic acid or chemical equivalent thereof, in the presence of 0.05 to 0.20 mol % of a titanium tetra-alkoxide catalyst, based on the total moles of phenyl tricarboxylic acid or chemical equivalent, at a temperature greater than 210° C. to form a reaction mixture having an acid value less than or equal to 0.5 as determined according to ASTM D1045.
A method of making alkyl tribenzanoates comprising:
- combining a phenyl tricarboxylic acid or chemical equivalent thereof with greater than or equal to 3.5 molar equivalents of a C4-C18 alkyl alcohol in the presence of 0.05 to 0.20 mol % of a titanium tetra-isopropoxide, based on the total moles of phenyl tricarboxylic acid or chemical equivalent, at a temperature greater than 210° C. to form a reaction mixture;
- neutralizing the reaction mixture with an aqueous caustic solution and purging the neutralized reaction mixture with carbon dioxide;
- distilling any residual C4-C18 alkanol from the purged reaction mixture;
- filtering the distilled reaction mixture through celite;
- and contacting the filtered reaction mixture with charcoal to form a product having an acid value less than 0.1 and an APHA color value less than or equal to 30 both determined according to ASTM D1045.
A method of making alkyl tribenzanoates comprising combining a trimellitic acid, trimellitic anhydride or combination thereof with greater than or equal to 3.5 molar equivalents of a 2-ethylhexyl alcohol, based on the total moles of trimellitic acid or trimellitic anhydride, in the presence of 0.05 to 0.20 mol % of a titanium tetra-isopropoxide catalyst at a temperature greater than 210° C. to form a reaction mixture having an acid value less than or equal to 0.3.
Dependencies are inferred from the claim text.