be derived from sand, quartz, flint, and diatomite. Alumina-silica components contain at least aluminum, silicon, and oxygen atoms and include alumina-silica fiber (made from molten alumina and silica), aluminosilicates, attapulgite, bentonite, halloysite, illite, kaolin, and montmorillonite.
Kaolin includes hydrous kaolin, calcined kaolin, and meta-kaolin. In this connection, heat treated alumina-silica components may be employed, such as calcined attapulgite, calcined bentonite, calcined halloysite, calcined illite, and calcined montmorillonite.
In one embodiment where the alumina and/or silica component contains at least one alumina component and at least one silica component, the alumina and/or silica component contains from about 40% to about 70% by weight of at least one alumina component and from about 30% to about 60% by weight of at least one silica component. In another embodiment where the alumina and/orof ink, paint and plastic compositions, formulations and vehicles in which the brown CICP compositions of this invention may be used including amounts of colorants.
Especially when incorporated in film or fiber forming materials, such as paints, coatings, and plastics, the brown CICP compositions according to the present invention display strong and bright brown color while not degrading the integrity and uniformity of the resultant films, fibers, and plastics. The brown CICP compositions not degrading the integrity and uniformity of the resultant films, fibers and plastics which can be as thin as about 3 mils, and even about 2 mils.
When incorporated into plastics, especially polyvinyl compounds and polyolefins, the brown CICP compositions according to the present invention not only display strong and bright brown color, but also exhibit excellent