Cross-linkable polyurethane block copolymers and their use...

Details Cross-linkable polyurethane block copolymers and their use... Cross-linkable polyurethane block copolymers and their use...

2006-07-11

2006-07-11

Niland, Patrick D. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C106S031130, C347S001000, C428S423100, C523S160000, C523S161000, C524S589000, C524S591000, C524S839000, C524S840000, C525S453000, C525S454000, C528S044000, C528S059000, C528S060000, C528S065000, C528S066000, C528S080000, C528S085000

Reexamination Certificate

active

07074850

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, X1, X2are 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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