Process for preparing polyurethane prepolymers containing isocyanate groups
AssigneeBayer Intellectual Property GmbH
InventorsHans-Georg Pirkl, Manfred Schmidt, Robert Vieler, Ursula Tracht, Peter Weuta, Sigurd Buchholz
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Abstract
The present invention relates to the technical field of isocyanates. The present invention provides a method for preparing NCO prepolymers by reacting a stoichiometric excess of an organic isocyanate with an isocyanate-reactive component, the reaction components being mixed together and the mixture being introduced directly into a storage or transport vessel, where it reacts to completion.
Claims11
1-11. (canceled)
A method for preparing an isocyanate group-containing prepolymer from an isocyanate group-containing component and an isocyanate group-reactive component, which comprises
- mixing continuously the components in a mixing device and immediately after being mixed
- introducing continuously the reaction mixture into a storage or transport vessel, where the reaction between the components is completed.
Dependencies are inferred from the claim text.