Wet and dry laid phosphate reactive sheets and phosphate ceramic

Details Wet and dry laid phosphate reactive sheets and phosphate ceramic Wet and dry laid phosphate reactive sheets and phosphate ceramic

1987-11-13

1989-10-10

Howard, Jacqueline V.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106121, 264333, 428182, 501 95, 501111, C04B 906, C04B 2834

Patent

active

048729124

ABSTRACT:
Phosphate reactive sheets and substrates can be prepared using wet-laying and dry-laying techniques. The wet or dry-laid composition contains calcium silicate and a non-reactive matrix of either fiber or a mixture of fiber and a binder. The matrix is used in an amount effective to hold the wet or dry-laid material together. At a desired time such phosphate reactive substrate compositions can be contacted with aqueous solutions of phosphoric acid. A metal oxide selected from aluminum oxide, magnesium oxide, zinc oxide, and calcium oxide must be present in either the substrate, the solution, or both. After the solution contacts the substrate, a reaction takes place within the matrix to form a rigid article.

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Shreve, "Pulp and Paper Industries", Chemical Process Industries, 3rd Edition, 1967, pp. 631-648.

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