Polymer-pigment composites
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United States of America Patent
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-
Jun 10, 2003
Grant Date -
Jul 25, 2002
app pub date -
Nov 14, 2001
filing date -
Nov 21, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Composite particles and a method of preparing the composite particles are provided. The composite particles contain titanium dioxide particles with adsorbed two-phase polymer particles. The two-phase polymer particles have a soft polymer phase and a hard polymer phase in which the weight ratio of the hard polymer phase to the soft polymer phase is in the range of 10:1 to 1:5. The composite particles containing the two-phase polymer particles have improved aqueous stability and provide coatings with improved scrub resistance.
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