Pigment composite and method for the preparation thereof

Details Pigment composite and method for the preparation thereof Pigment composite and method for the preparation thereof

2005-04-26

2005-04-26

Kiliman, Leszek (Department: 1773)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

C428S404000, C428S406000, C428S407000, C106S460000

Reexamination Certificate

active

06884508

ABSTRACT:
The invention relates to a coating element, a coated fibrous web, and methods for manufacturing the same. The invention also relates to a particle granule. The coating element comprises a pigment binder structure granule formed from pigment particles and a binding agent and, possibly, additives, the pigment particles being bound to one another through a binding agent. According to the invention, the shape of the granule is essentially rotationally symmetrical, comprising an inner part and a crust part, the density of the inner part being lower than the crust part. The granules can be prepared by spray drying from aqueous slurry that contains a pigment, binder, and possible additives. The shape of the coating elements can be altered by using controlled deformation. They can be flattened, for example, by calendering to form the surface of a desired shape, and attached to the surface of the fibrous web without a separate binder or by adding a small amount of binder only.

REFERENCES:
patent: 3669899 (1972-06-01), Vassiliades et al.
patent: 4058434 (1977-11-01), Vincent et al.
patent: 5236989 (1993-08-01), Brown et al.
patent: 5882395 (1999-03-01), Linde et al.
patent: 6063180 (2000-05-01), Korschen et al.
patent: 1 392 923 (1975-05-01), None
WPI/Derwent's abstract, accession no. 1990-338205, week 9045, Abstract of JP 2242998, (Asada Siefun KK, Miyoshi Kasei YG) Sep. 27, 1990.

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