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:
Apr. 16, 2024
Filed:
Sep. 14, 2018
Dow Global Technologies Llc, Midland, MI (US);
Arjun Raghuraman, Pearland, TX (US);
William H. Heath, Lake Jackson, TX (US);
Sukrit Mukhopadhyay, Midland, MI (US);
Heather A. Spinney, Midland, MI (US);
David R. Wilson, Midland, MI (US);
Anthony P. Gies, Lake Jackson, TX (US);
Manjiri R. Paradkar, Lake Jackson, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A method of producing a polyether polyol includes reacting a low molecular weight initiator with one or more monomers in the presence of a polymerization catalyst, and the low molecular weight initiator has a nominal hydroxyl functionality of at least 2. The one or more monomers includes at least one selected from propylene oxide and butylene oxide. The polymerization catalyst is a Lewis acid catalyst having the general formula M(R)1(R)1(R)1(R)0 or 1, whereas M is boron, aluminum, indium, bismuth or erbium, R, R, R, and Rare each independent, Rincludes a fluoroalkyl-substituted phenyl group, Rincudes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, Rincludes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, and optional Rincludes a functional group or functional polymer group, Rbeing different from at least one of Rand R.