The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1994
Filed:
Mar. 29, 1989
Johnny Chavez, Jr, Lake Jackson, TX (US);
Andrew S Farnum, Angleton, TX (US);
Vaughn M Nace, Lake Jackson, TX (US);
Raymond A Plepys, Lake Jackson, TX (US);
Randall K Whitmire, Lake Jackson, TX (US);
Van A Kent, Lake Jackson, TX (US);
Paul D Bettge, Lake Jackson, TX (US);
Hans R Friedli, Lake Jackson, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
The concentration of propenyl ethers in a hydroxy-functional polyether having oxypropylene units is reduced by a process including the step of contacting the polyether with an acid ion exchange resin for a time and at a temperature sufficient for the conversion of at least some of the propenyl ethers to propionaldehyde and in the presence of sufficient water for the conversion. Optionally, the polyether is treated with an epoxy compound in an amount sufficient to reduce the acidity of the polyol.