Dendritic and highly branched polyurethanes
The present invention relates to dendritic and highly branched polyurethanes, to a process for preparing them and to their use. In a process for preparing dendritic or highly branched polyurethanes by reacting diisocyanates and/or polyisocyanates with compounds containing at least two groups which a...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present invention relates to dendritic and highly branched polyurethanes, to a process for preparing them and to their use.
In a process for preparing dendritic or highly branched polyurethanes by reacting diisocyanates and/or polyisocyanates with compounds containing at least two groups which are reactive toward isocyanates, at least one of the reactants contains functional groups having a different reactivity compared to the other reactant and the reaction conditions are selected so that only certain reactive groups react with one another in each reaction step. |
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