Metal condensed phosphate hardener coated with reaction product

Details Metal condensed phosphate hardener coated with reaction product Metal condensed phosphate hardener coated with reaction product

1982-08-11

1983-05-17

Poer, James

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106 74, 106 84, 428403, 428701, C09C 306

Patent

active

043838669

ABSTRACT:
Disclosed is a metal condensed phosphate comprising a core of metal condensed phosphate and a coating on the core comprising a reaction product of a metallate and acid. The amount of the reaction product comprising the coating generally ranges from about 0.1 percent to about 50 percent by weight based on the combined weight of the metal condensed phosphate and the reaction product.
Also disclosed is a method of preparing a coated, metal condensed phosphate comprising combining an aqueous slurry of metal condensed phosphate with an aqueous metallate while maintaining the pH of the slurry in a range of from about 4 to about 10.

REFERENCES:
patent: 3625722 (1971-12-01), von Freyhold et al.
patent: 3669699 (1972-06-01), Doi et al.
patent: 3930876 (1976-01-01), Nakajima et al.
patent: 4075031 (1978-02-01), Allen

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