The product, composition for coating, and methods for coating a sheet of paper, and calendering the paper to form a coating of wax on him, and to produce a product of pigment

摘要

"The product, composition for coating, and methods for coating a sheet of paper, and calendering the paper to form a coating of wax on him, and to produce a product of pigment.A pigment for paper coating made from raw kaolin containing minor amounts of minerals. These pigments are used in applications with coated light and ultra light.The pigments comprise a system of filossilicato minerals which produce a MgO content in the pigment end ranging from 0.04 and 0.3 percent by weight and a content of K ~ 2 ~ the varying between 0.12 and 0.8 percent by weight based on the dry weight of the kaolin pigment. The mica in the product of the pigment is 1.0% to 6.7% by weight, and the smectite is 1.2% to 9.1% by weight of kaolin.The presence of these percentages by weight can be identified by a factor of conformation of 15 or higher.The clay content viscous food to produce the product of the pigment is between 70 and 100 per cent by weight based on the dry weight of the clay kaolin.The pigment has a conformation factor ranging between 35 and 60 or more and more than 80% by weight of the particles are smaller than 2 microns and more than 12% are smaller than 0.25 microns.