Patent EP0334059A1 successfully refreshed from Google Patents.
EP0334059A1
Expired / Lapsed
EP
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Process for the preparation of polyurethane foams
Assignee: Bayer AG
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Filing: 1989-03-01
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Granted: —
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Expires: 2009-03-01
Abstract
Abstract In the production of polyurethane foams from a) polyisocyanates, b) polyols having a molecular weight of from 350 to 10,000, c) liquid blowing agents and optionally d) further additives, a saving in blowing agents can be made without any significant impairment of the physical properties of the foam, or even in some cases with an improvement thereof, if component a) and/or b) is charged with a maximum of 10% by volume of gas, based on the total volume of the foam, at 22 DEG C under atmospheric pressure (= 1.013 bar), the gas being so finely dispersed that the mean size of the gas bubbles is a maximum of 1 mm.
Inventors
- 👤 Kurt Krippl
- 👤 Klaus Dipl.-Ing. Schulte
- 👤 Erwin Hoffmann
- 👤 Rolf Dr. Wiedermann
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 06:15
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/127; C08J2203/00; C08J2203/14; C08J2203/142; C08J2375/00; C08J2375/04
Claims Analysis
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References Cited (Backward Citations)
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