US 2009/0214651 A1Published application

Production of polyurethane foams

AssigneeBayer Innovation GmbH

InventorsBurkhard FUGMANN, Melita Dietze, Michael Mager, Thorsten Rische, Sebastian Dorr, Thomas Feller, Michael Heckes, Jan Schonberger

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Abstract

The invention relates to a process for producing polyurethane foams, by frothing and drying specific polyurethane dispersions.

Claims14

Dependent claims

A process for producing wound contact materials which comprises compositions containing anionically hydrophilicized, aqueous polyurethane dispersions (I) being frothed and physically dried without chemical crosslinking.

Dependencies are inferred from the claim text.

Facts

Application: 12/244,371Filed 2 Oct 2008
Priority: DE 10 2007 048 079.45 Oct 2007
Published: 27 Aug 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

C08G 18/12
Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step: using…
A61L 15/26
Containing macromolecular materials: macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated…
A61L 15/425
Use of materials characterised by their function or physical properties: porous materials, e.g. foams or sponges
C08G 18/0828
Containing anionic or anionogenic groups: containing sulfonate groups or groups forming them

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