Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2005-06-21
2005-06-21
Kiliman, Leszek B (Department: 1773)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S403000, C428S404000, C428S407000, C106S436000, C427S212000
Reexamination Certificate
active
06908675
ABSTRACT:
Titanium Dioxide and other pigments or powders processed by this present process are smoothly discharging, low dusting, agglomerated, compaction resistant, extremely friable and fully dispersable. The process for the production of smoothly discharging pigment or powder consists of gently blending in the presence of an air flow and an electrostatic charge where said pigment or powder is being agglomerated with or without a treated or non-treated seed particle of the same or similar pigment whereas said pigment or powder in accordance with the invention yields a composition of a substantially spherical particulate that has a pseudo-particle size of 0.1-5.0 mm in the form of smoothly discharging, low dusting, non-sticky, agglomerated, compaction resistant pigment or powder, in which said pigment or powder particles are 80%-99.9% by weight, pigment, and in which the pigments or powders are compatible with inks, paints and plastics, and can be readily dispersed and incorporated into the same.
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Perry, R.H.; Green, D. Perry's Chemical Engineer's Handbook 7th Edition Sec 20, pp. 56 through 80 McGraw-Hill 1999.
Bohach Christopher Scott
Bohach William Louis
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