Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1991-11-15
1993-09-28
Thibodeau, Paul J.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
106442, 106481, 106482, 106492, 428404, 428406, B32B 516, B32B 1502
Patent
active
052485560
ABSTRACT:
Whitener pigment particles that offer good hiding power consist of particles having a uniform shape (preferably spherical) and varying only slightly in dimension. The particles consist of an inexpensive, readily manufacturable core material which is surrounded by one or more thin, concentric layers or shells, one of which is titania. The core provides the central mechanical support for the shells. In addition to the titania shell, layers can be added to provide compatibility with the carrier in which the particles are dispersed and promote phase transformation. Also described is a production method and apparatus for generating large quantities of the particles.
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Hsu Peter
Kuehnle Manfred R.
Matijevic Egon
Kuehnle Manfred R.
Nakarani D. S.
Thibodeau Paul J.
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