Process for clarifying alkoxylated alcohols

US5352842A · kind A · utility

Assignee

• Vista Chemical Company · US

Inventors

• Upali P. Weerasooriya · Austin, US
• Steve V. Orsak · Cedar Park, US
• Clint Osborne · Salem, US
• John Wei-Ping Lin · Webster, US
• Mark Hellums · Austin, US
• Linton LeCompte · Lake Charles, US
• David A. Riley · Kenosha, US

Key dates

• Filing date: Mar 30, 1993
• Grant date: Oct 4, 1994
• Expiry date: Mar 30, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/36
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for clarifying an alkoxylated product mixture produced using a calcium-based catalyst wherein the product mixture is heated to a temperature of from about 80.degree. C. to about 175.degree. C. to produce a filtration feed, the filtration feed being passed through a filter medium comprising material possessing polar groups to produce a clarified filtrate, the filtration feed being passed through the filter medium within about 5 days of being prepared, the filtration feed being passed through the filter medium until the desired degree of clarification is obtained, the temperature of the clarified filtrate being less than about 30.degree. C. but above the pour point of the clarified filtrate.