Method for manufacturing water glass cement hardeners

Details Method for manufacturing water glass cement hardeners Method for manufacturing water glass cement hardeners

1981-10-13

1983-07-26

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423314, C01B 2536

Patent

active

043953875

ABSTRACT:
Condensed aluminum phosphates, useful as hardeners for water glass cements, are prepared in a solid state reaction by dry mixing aluminum hydroxide with an ammonium phosphate, heating the mixture at an initial temperature below 250.degree. C. for longer than about 2 hours and then raising the temperature in stages to at least about 400.degree. C. so as to minimize foaming and to avoid any liquefaction of the mixture during the reaction.

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