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US 4,988,561 AGranted
Paper coated with synthetic alkali metal aluminosilicates
AssigneeJ. M. Huber Corporation
InventorSatish K. Wason
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AssigneeJ. M. Huber Corporation
InventorSatish K. Wason
Estimating the term…
A family of novel and unique synthetic alkali metal alumino-silicates (SAMS) are produced by the hydrothermal reaction between kaolin and alkali metal silicates. The integrated composition of the SAMS products is a unique entity having an overall composition of xM.sub.2 O:Al.sub.2 O.sub.3 :ySiO.sub.2 :zH.sub.2 O where x is the number of moles of alkali metal oxide and is an integer from 0.01 to 2.0, M is the alkali metal, y is the number of moles of SiO.sub.2 in the unique SAMS compositions and is an integer greater than 2.0, and z is the number of moles of bound water and is an integer ranging from 1.0 to 5.0. The unique SAMS compositions are structured materials in which the structure can be controlled, and are therefore useful as functional fillers, as TiO.sub.2 extenders, as silica extenders or as reinforcing agents for paper, paint, rubber, plastics and specialty products.
A paper containing a coating-effective amount of a paper coating comprising an alkali metal alumino-silicate having a composition in terms of mole ratio of oxides as follows:
A paper product containing a coating effective amount of a paper coating comprising an essentially x-ray amorphous alkali metal alumino-silicate having a composition in terms of mole ratio of oxides as follows:
Dependencies are inferred from the claim text.