Cross-linkable polyurethane block copolymers and their use in dispersion binding agent systems
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United States of America Patent
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Jul 11, 2006
Grant Date -
Dec 9, 2004
app pub date -
Sep 14, 2002
filing date -
Sep 26, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to polyurethane block copolymers of general formula (I) to (IV), in which the variables are defined as follows: A represents a polyurethane block, which contains at least one hydrophilic group, B is a hydrophobic polyurethane block, X.sup.1, X.sup.2 are hydrophilic end groups and n is a whole number from 1 to 20. The invention also relates to the production of cross-linkable dispersion additives from the inventive polyurethane block copolymers and to the use of said cross-linkable dispersion additives for colorant preparations, in particular inks for ink-jet printing.
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