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:
Mar. 25, 2014
Filed:
Apr. 21, 2011
Pavel L. Shutov, Linz, AT;
Jorge Jimenez, Lake Jackson, TX (US);
Hanno R. Van Der Wal, Hoek, NL;
Francois M. Casati, Pfaffikon, CH;
Pavel L. Shutov, Linz, AT;
Jorge Jimenez, Lake Jackson, TX (US);
Hanno R. Van der Wal, Hoek, NL;
Francois M. Casati, Pfaffikon, CH;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A process for preparing a hybrid polyester-polyether polyol comprises contacting a carboxyl group-containing component and an epoxide, optionally in the presence of one or more of a double metal cyanide catalyst, a superacid catalyst, a metal salt of a superacid catalyst and/or a tertiary amine catalyst, under conditions such that a hybrid polyester-polyether polyol is formed. The hybrid polyester-polyether polyol offers the advantages of both ester and ether functionalities when used in a polyurethane formulation, thus enhancing physical properties. The process results in products having narrow polydispersity, a low acid number and unsaturation, and reduced byproduct formation, particularly when the double metal cyanide catalyst is employed.