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EP0345580A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for introducing flowing agents to at least one of the fluid reaction components used in the production of cellular polyurethane materials

Assignee: Bayer AG
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Filing: 1989-05-27
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Granted: —
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Expires: 2009-05-27
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Abstract

Abstract Translated from German Zur lunker- und rißfreien Herstellung von Polyurethanschaumstoffen mit hohen Wärmedämmeigenschaften bringt man, vorzugsweise in einem Begasungsbehälter mittels eines Hohlrührers, Treibmittel, welche eine geringere Wärmeleitfähigkeit als Luft aufweisen, in gasförmigem Zustand zumindest in eine der Reaktionskomponenten, insbesondere in das Polyol, ein. For the blow-free and crack-free production of polyurethane foams with high thermal insulation properties, blowing agents, which have a lower thermal conductivity than air, are introduced, preferably in a gassing container by means of a hollow stirrer, in a gaseous state into at least one of the reaction components, in particular into the polyol.

Inventors

  • 👤 Rolf Dr. Wiedermann
  • 👤 Erwin Hoffmann
  • 👤 Reinhard Dr. Kaufung
  • 👤 Kurt Krippl
  • 👤 Klaus Schulte

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 04:51
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/147; C08J9/148; C08J2375/00; C08J2375/04

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