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:
Feb. 07, 2023
Filed:
Mar. 12, 2021
Applicant:
Covestro Llc, Pittsburgh, PA (US);
Inventors:
Sharlene A. Lewis, Pittsburgh, PA (US);
Jack R. Reese, Coraopolis, PA (US);
Nigel Barksby, Moon Township, PA (US);
Brian L. Neal, Pittsburgh, PA (US);
Assignee:
Covestro LLC, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/28 (2006.01); C08G 18/30 (2006.01); C08G 18/48 (2006.01); C08G 18/76 (2006.01); C08G 65/26 (2006.01); C08G 101/00 (2006.01);
U.S. Cl.
CPC ...
C08G 18/4854 (2013.01); C08G 18/302 (2013.01); C08G 18/7621 (2013.01); C08G 65/2609 (2013.01); C08G 65/2663 (2013.01); C08G 65/2696 (2013.01); C08G 2101/00 (2013.01); C08G 2110/0008 (2021.01); C08G 2110/0058 (2021.01);
Abstract
This invention relates to an in-situ formed polyol blend having an overall functionality of 2 to 3 and an overall hydroxyl number of 50 to 150. A process for preparing these polyol blends is also disclosed. These in-situ formed polyol blends are suitable for preparing viscoelastic flexible polyurethane foams. A process for preparing these foams is also disclosed.