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. 24, 2018
Filed:
Jul. 29, 2013
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Assignee:
COVESTRO DEUTSCHLAND AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 44/34 (2006.01); B29C 44/04 (2006.01); B29C 44/12 (2006.01); C08G 18/72 (2006.01); F16L 59/02 (2006.01); B29K 75/00 (2006.01); B29K 79/00 (2006.01); B29L 7/00 (2006.01); B29L 23/00 (2006.01);
U.S. Cl.
CPC ...
B29C 44/3403 (2013.01); B29C 44/0415 (2013.01); B29C 44/1209 (2013.01); C08G 18/72 (2013.01); F16L 59/02 (2013.01); B29K 2075/00 (2013.01); B29K 2079/00 (2013.01); B29L 2007/00 (2013.01); B29L 2023/00 (2013.01); Y10T 428/1376 (2015.01);
Abstract
The present invention relates to a method for producing a PUR/PIR foam body, comprising the steps of providing a mold adapted for applying an underpressure to the interior of the mold; introducing a reaction mixture comprising an isocyanate-reactive component A and an isocyanate B into the mold, and applying an underpressure to the interior of the mold, so the underpressure acts on the introduced reaction mixture. The underpressure is applied to the interior of the mold no later than the reaction mixture has started to set in the mold, and the isocyanate index of the reaction mixture is ≥300.