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Article: Application of spherical hollow calcium carbonate particles as filler and coating pigment.(Online Exclusive Wet-End Additives)
- Article from:
- Solutions - for People, Processes and Paper
- Article date:
- June 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Paper Industry Management Association. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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APPLICATION: Spherical hollow PCC, a novel pigment, produced by the interfacial reaction method gives high specific light scattering coefficient and thermal insulation advantageously when used as a filler or coating pigment.
One disadvantage of recycled paper, when compared to paper from virgin pulp, is the difficulty of gaining high brightness. An efficient coating or internal loading using high-opacity PCC pigment can hide the gray appearance. To develop PCC for this purpose, spherical hollow particles of calcium carbonate were successfully obtained by the interfacial reaction method at high yields. Primary particles of 50 nm in diameter in mixed crystal forms ...