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:
May. 05, 2020
Filed:
Dec. 31, 2012
Basf SE, Ludwigshafen, DE;
Iran Otero Martinez, Lemfoerde, DE;
Jose Manuel Lopez Lopez, Barcelona, ES;
Ferran Antich Moros, Barcelona, ES;
BASF SE, Ludwigshafen, DE;
Abstract
Process for producing a flame-retardant polyurethane foam of density from 5 to 50 g/L, by mixing (a) organic polyisocyanate with (b) polymeric compounds having at least two hydrogen atoms reactive toward isocyanates, (c) optionally chain extender and/or crosslinking agent, (d) flame retardant, (e) blowing agent, (f) catalysts, and optionally (g) auxiliary and additives to give a reaction mixture and permitting said reaction mixture to react completely, where the flame retardant (d) comprises expandable graphite and oligomeric organophosphorus flame retardant. The present invention further relates to a flame-retardant polyurethane foam which can be produced by a process of the invention, and also to the use of this foam in vehicles for acoustic insulation.