Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2005-06-22
2009-08-25
Gulakowski, Randy (Department: 1796)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S407000, C523S201000, C523S212000
Reexamination Certificate
active
07579081
ABSTRACT:
An opacifying particle including a pigment particle having an average particle diameter of from 0.005 to 5 microns and an index of refraction of at least 1.8; a first polymer attached to the surface of the pigment particle via a silane residue; and a second polymer which substantially encapsulates the pigment particle having the attached first polymer is provided. Also provided is a method for forming the opacifying particle as is a coating composition and a plastic composition including the opacifying particle.
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Cantor & Colburn LLP
Gulakowski Randy
Loewe Robert
Rohm and Haas Company
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