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:
Jan. 28, 2020
Filed:
Apr. 03, 2019
Applicant:
Covestro Llc, Pittsburgh, PA (US);
Inventors:
Anthony R. Loveday, Weirton, WV (US);
Jack R. Reese, Coraopolis, PA (US);
Rick L. Adkins, Canonsburg, PA (US);
David P. Zielinski, Cranberry Township, PA (US);
Assignee:
Covestro LLC, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 493/04 (2006.01); C07C 41/03 (2006.01); B01J 27/26 (2006.01); C08G 18/48 (2006.01);
U.S. Cl.
CPC ...
C07D 493/04 (2013.01); C07C 41/03 (2013.01); B01J 27/26 (2013.01); C07C 2602/42 (2017.05); C07C 2602/44 (2017.05); C07C 2602/46 (2017.05); C07C 2602/48 (2017.05); C07C 2603/66 (2017.05); C08G 18/4875 (2013.01); C08G 18/4883 (2013.01);
Abstract
Processes are described for producing a polycyclic polyether polyol having a hydroxyl functionality of 1.5 to 6 and a number average molecular weight of 200 to 12,000 Da. The processes comprise alkoxylating a polyol starter comprising predominantly a polycyclic polyol with an alkylene oxide in the presence of a DMC catalyst.