Process for the purification of hydroxypivalyl hydroxypivalate

Details Process for the purification of hydroxypivalyl hydroxypivalate Process for the purification of hydroxypivalyl hydroxypivalate

C - Chemistry, Metallurgy

07

C

C07C 69/675 (2006.01) C07C 67/54 (2006.01)

Patent

CA 2093004

Disclosed is a process for the recovery of purified hydroxypivalyl hydroxypivalate (HPHP) from a crude, HPHP-contain- ing material containing inorganic catalyst residues and low-boiling and high-boiling (with respect to the boiling point of HPHP) impurities. The purification process employs two distillation zones, a first distillation zone wherein inorganic and high-boiling impurities are removed and a second distillation zone wherein low- and high-boiling impurities are removed.

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