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:
May. 07, 2024
Filed:
Nov. 19, 2019
Dow Global Technologies Llc, Midland, MI (US);
Felipe A. Donate, Midland, MI (US);
Rebecca J. Wachowicz, Bay City, MI (US);
Ellen D. Hock, Midland, MI (US);
Jason L. Trumble, Bay City, MI (US);
David S. Laitar, Midland, MI (US);
Keosha L. Cade, Saginaw, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A prepolymer comprising an acid group is made by a process comprising the step of contacting: (i) a di-isocyanate, (ii) a polyol containing an acid group, and (iii) a polyol without an acid group, the contacting conducted under reaction conditions and in a solvent consisting essentially of: (A) a first component consisting essentially of at least one glycol ether ketone, and (B) optionally, a second component consisting of at least one aprotic glycol ether. The prepolymer is useful in the preparation of water-based polyurethane dispersions.