C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
C09C 1/42 (2006.01) C08K 3/34 (2006.01) C09C 1/00 (2006.01) D21H 17/68 (2006.01) D21H 19/40 (2006.01) D21H 21/52 (2006.01)
Patent
CA 2452563
The present invention relates to a hydrous kaolin product having improved optical properties, for example, when used in the production of paper products. The present invention comprises an improved barrier coating for paper and a method of making the coated paper. The present invention also comprises an improved method from making filled and coated paper products. The present invention uses a composition comprising kaolin having a shape factor of at least about 70:1, such as at least about 80:1 or at least about 100:1.
L'invention concerne un produit à base de kaolin hydraté possédant des propriétés optiques améliorées, par exemple, lorsqu'il est utilisé dans la production de produits de papier. Cette invention comprend un revêtement barrière amélioré destiné au papier et un procédé de fabrication de ce papier revêtu. L'invention concerne également un procédé amélioré destiné à fabriquer des produits de papier chargés et revêtus. Cette invention utilise une composition contenant du kaolin possédant un facteur de forme d'au moins environ 70:1, de préférence d'au moins 80:1 ou idéalement d'au moins environ 100:1.
Bilimoria Bomi M.
Cummings David O.
Garska Michael J.
Jones Philip J. E.
Pruett Robert J.
Imerys Pigments Inc.
Sim & Mcburney
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