Polymer dispersant having hyperbranched structures

Details Polymer dispersant having hyperbranched structures Polymer dispersant having hyperbranched structures

2007-09-11

2007-09-11

Tucker, Philip C. (Department: 1712)

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C528S077000, C528S085000, C525S457000, C525S458000, C525S460000, C523S160000, C523S161000, C106S031130, C106S031600, C106S031750, C106S031850

Reexamination Certificate

active

10473210

ABSTRACT:
Polyurethanes having hyperbranched structures, selected from hyperbranched polyurethanes containing at least one pigment affinity group and modified hyperbranched polyurethanes, are used as polymeric dispersing additives for pigments. A preferred process for preparing modified polymeric dispersing additives comprises reacting a hyperbranched polyurethane having from 2 to 100 NCO groups and a molar mass of from 500 to 50,000 g/mol with one or more polyether derivatives.

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Derwent ABST CA 136:371211, 2002.

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