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:
Dec. 10, 2024
Filed:
Feb. 14, 2022
Applicant:
Covestro Llc, Pittsburgh, PA (US);
Inventors:
Sharlene A. Lewis, Pittsburgh, PA (US);
Anthony R. Loveday, Weirton, WV (US);
Eric M. Rexrode, McDonald, PA (US);
Assignee:
Covestro LLC, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/76 (2006.01); C08G 18/48 (2006.01); C08G 65/48 (2006.01);
U.S. Cl.
CPC ...
C08G 18/7671 (2013.01); C08G 18/4833 (2013.01); C08G 18/4879 (2013.01); C08G 65/485 (2013.01); C08G 2110/0025 (2021.01);
Abstract
Isopropylidenediphenol-based polyether polyols, processes for their production, foams produced using such isopropylidenediphenol-based polyether polyols, such as PUR-PIR rigid foams, as well as to processes for producing such foams. The polyether polyols have an internal block comprising polymerized ethylene oxide moieties and an external cap comprising polymerized propylene oxide moieties.