A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an
A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an esd less than 2 μm and less than 25% by weight of the particles have an esd less than 0.25 μm and a shape factor of at least 15. This platy clay can be blended with b-fraction clay component. In processing, the crude kaolin is ground to a shape factor greater than 50 to produce even greater "platy" clay. The pigment product has a particle size distribution such that at least 80% by weight of the particles have an esd less than 2 μm and greater than 12% and less than 35% by weight of the particles have an esd less than 0.25 μm and whose surface area is greater than 12 m2/g when measured by the BET method.
대표청구항▼
A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an
A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an esd less than 2 μm and less than 25% by weight of the particles have an esd less than 0.25 μm and a shape factor of at least 15. This platy clay can be blended with b-fraction clay component. In processing, the crude kaolin is ground to a shape factor greater than 50 to produce even greater "platy" clay. The pigment product has a particle size distribution such that at least 80% by weight of the particles have an esd less than 2 μm and greater than 12% and less than 35% by weight of the particles have an esd less than 0.25 μm and whose surface area is greater than 12 m2/g when measured by the BET method. 9960700, Ojo et al.; US-5587003, 19961200, Bulow et al., 095/902; US-5912422, 19990600, Bomard et al., 095/139; US-5914455, 19990600, Jain et al.; US-5980611, 19991100, Kumar et al., 095/139; US-5993773, 19991100, Funakoshi et al.; US-6083301, 20000700, Gary et al., 095/139; US-6143057, 20001100, Bulow et al., 095/139; US-6238460, 20010500, Deng et al., 095/139; US-6261344, 20010700, Labasque et al., 095/902; US-6270557, 20010800, Millet et al., 095/139; US-6273939, 20010800, Millet et al., 095/139; US-6309445, 20011000, Gittleman et al., 095/139; US-6340382, 20020100, Baksh et al., 095/139 nickel-tetanium shape memory alloy films prepared by annealing during deposition", by Kathleen Gisser, et al., Applied Physics Letters, vol. 61, Issue 14, pp. 1632-1634 (Abstract view). "Relative importance of bombardment energy and intensity in ion plating", K.S. Fancey, et al., Journal of Vacuum Science & Technology A: Vacuum, Surfaces and Films, vol. 13, Issue 2, pp. 428-435 (Abstract view) March 1995. "A Concise History of Vacuum Coating Technology, Part 2: 1940 to 1975" by D. Mattox, www.svc.org/Historyof Vac2.html, pp 1-15. "Model Surfaces for Studying and Controlling the Adhesion of Cells"
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