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. 03, 2019
Filed:
Dec. 12, 2018
Applicant:
Covestro Llc, Pittsburgh, PA (US);
Inventors:
Bin Lee, Coraopolis, PA (US);
Paul O. Barley, Burgettstown, PA (US);
Assignee:
COVESTRO LLC, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/00 (2006.01); C08G 18/48 (2006.01); C08G 18/76 (2006.01); C08G 101/00 (2006.01); B29K 105/00 (2006.01); B29K 105/04 (2006.01); B29K 75/00 (2006.01); B29C 44/02 (2006.01); B29C 44/34 (2006.01); B29C 44/40 (2006.01); B29C 44/58 (2006.01); B29K 105/24 (2006.01);
U.S. Cl.
CPC ...
C08J 9/0066 (2013.01); C08G 18/4812 (2013.01); C08G 18/4816 (2013.01); C08G 18/4825 (2013.01); C08G 18/4841 (2013.01); C08G 18/7664 (2013.01); C08G 18/7671 (2013.01); C08J 9/0042 (2013.01); B29C 44/02 (2013.01); B29C 44/3415 (2013.01); B29C 44/40 (2013.01); B29C 44/588 (2013.01); B29K 2075/00 (2013.01); B29K 2105/0014 (2013.01); B29K 2105/045 (2013.01); B29K 2105/24 (2013.01); B29K 2911/12 (2013.01); B29K 2995/0063 (2013.01); B29K 2995/0088 (2013.01); C08G 2101/0008 (2013.01); C08G 2101/0016 (2013.01); C08J 2375/08 (2013.01);
Abstract
Disclosed are methods and systems for preparing open-celled polyurethane foams by a discontinuous box foam process in which (a) a polyurethane foam-forming composition is deposited into a container having a gas-permeable base and (b) the polyurethane-foam forming composition is allowed to form an open-celled polyurethane foam in the container. In these methods and systems, the gas-permeable base is heated before, during, and/or after step (a) and heating is continued during at least a portion of step (b).