Patent ID: 6066767
Filing Date: 2000-05-23
Classification: C07C

Abstract:
A method for purifying cumene hydroperoxide cleavage products from hydroxyacetone and carbonyl compounds in a purification process system comprising a primary extraction stage conducted in an extractor, said method comprising the steps of:a) applying, prior to said primary extraction stage, a water-salt solution to the cumene hydroperoxide cleavage products so that at said primary stage the hydroxyacetone and the carbonyl compounds are extracted from the cumene hydroperoxide cleavage products by action of the water-salt solution; andb) treating, after said primary extraction stage, said water-salt solution and the hydroxyacetone and carbonyl compounds, with an alkaline agent to form a water-salt-caustic solution and to convert the hydroxyacetone and carbonyl compounds into condensation products thereby purifying the cumene hydroperoxide cleavage products.