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EP0004618A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for preparing flame-retardant flexible polyurethane foams containing cyanic acid derivatives as flame retardants

Assignee: BASF SE
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Filing: 1979-03-24
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Granted: —
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Expires: 1999-03-24
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Abstract

Abstract Translated from German Die Erfindung betrifft ein Verfahren zur Herstellung von schwerentflammbaren Polyurethan-Weichschaumstoffen durch Umsetzung einer Mischung aus Diphenylmethandiisocyanaten und Polyphenyl-polymethylen-polyisocyanaten mit einem Gehalt an Diphenylmethan-diisocyanaten von 40 bis 90 Gew.%, bezogen auf das Gesamtgewicht, Polyolen, Cyanursäurederivaten als Flammschutzmittel, wie Cyanamid, Dicyanamid, Guanidin, Biguanid, Melamin, Cyanursäurealkylesterhydrazide und -amide, und Treibmitteln sowie gegebenenfalls Kettenverlängerungsmitteln und Zusatzstoffen. Die Polyurethan-Weichschaumstoffe eignen sich für die an sich bekannten Anwendungsbereiche, insbesondere jedoch als Schallisolationsmaterial für den Bausektor. The invention relates to a process for the production of flame-retardant flexible polyurethane foams by reacting a mixture of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates with a diphenylmethane diisocyanate content of 40 to 90% by weight, based on the total weight, of polyols and cyanuric acid derivatives as flame retardants. such as cyanamide, dicyanamide, guanidine, biguanide, melamine, alkyl cyanuric acid hydrazides and amides, and blowing agents and optionally chain extenders and additives. The flexible polyurethane foams are suitable for the fields of application known per se, but in particular as sound insulation material for the construction sector.

Inventors

  • 👤 Wolfgang Dr. Jarre
  • 👤 Gerhard Dr. Mueller
  • 👤 Otmar Dr. Zipp
  • 👤 Eckhard Dr. Ropte

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 08:11
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0028; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3838; C08G18/3842; C08G18/3851; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7657; C08G18/7664; C08K; C08K5/00; C08K5/16; C08K5/29; C08K5/34; C08J2375/00; C08J2375/04

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

FR1541226A Cited
FR2003124A1 Cited
DE2043917A1 Cited
DE2348838A1 Cited
US3965052A Cited
DE2514209A1 Cited

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