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US 9,315,614 B2Granted
Urethane-containing silylated prepolymers and process for preparation thereof
AssigneeEvonik Degussa GmbH
InventorsFrank Schubert, Michael Ferenz, Wilfried Knott
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Abstract
Novel urethane- and silyl-containing prepolymers and compositions obtained as reaction products from alkoxysilyl-bearing compounds and isocyanate-bearing compounds, and a process for preparation thereof.
Claims14
Urethane-containing reaction products obtained by the reaction of:
- (a) at least one compound having one or more isocyanate groups, and bearing no alkoxysilyl and/or alkylsilyl groups;
- with
- (b) at least one compound bearing a plurality of alkoxysilyl groups and additionally bearing at least one hydroxyl group;
- (c) optionally in the presence of at least one catalyst;
- wherein the molecules of the reaction products have an average of more than one alkoxysilyl group per urethane group.
2 more elements
Dependencies are inferred from the claim text.