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:
Apr. 02, 2024
Filed:
Jan. 11, 2021
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Stefan Hopf, Monheim, DE;
Stephan Moers, Brüggen, DE;
Achim Wick, Cologne, DE;
Christian Windeck, Viersen, DE;
Assignee:
Covestro Deutschland AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 44/42 (2006.01); B29C 44/04 (2006.01); B29C 44/58 (2006.01); B29K 75/00 (2006.01);
U.S. Cl.
CPC ...
B29C 44/428 (2013.01); B29C 44/04 (2013.01); B29C 44/588 (2013.01); B29K 2075/00 (2013.01);
Abstract
The invention relates to a method for the production of foamed areal polyurethane(PUR)/polyisocyanurate(PIR) moldings, where a polyurethane/polyisocyanurate reaction mixture is injected into a mold that is under elevated pressure and then a depressurization takes place, and the foaming process is thus induced, and after the reaction the molding is demolded, and to a mold for carrying out the method.