Process for the purification of hydroxypivalyl hydroxypivalate

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

1991-08-12

1993-05-11

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Plural distillations performed on same material

One a filming distillation

203 75, 203 77, 203 87, 203 94, 202155, 560189, B01D 122, C07C 6966

Patent

active

052098273

ABSTRACT:
Disclosed is a process for the recovery of purified hydroxypivalyl hydroxypivalate (HPHP) from a crude, HPHP containing 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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