Process for producing a mainly inorganic foam, and thus produced

Details Process for producing a mainly inorganic foam, and thus produced Process for producing a mainly inorganic foam, and thus produced

1998-06-29

1999-11-02

Dudash, Diana

Stock material or miscellaneous articles

Composite

Of inorganic material

106601, 106672, 252 62, 4283122, 428697, 428703, 428704, 264333, 264DIG17, 264DIG19, 264DIG35, 501 84, 501 95, 501111, 501124, C04B 2834, C04B 3802, C04B 3810, C04B 3500

Patent

active

059767189

ABSTRACT:
A premix composition for producing an inorganic solid foamed mass by mixing component (A) an aqueous acidic phosphate solution of mainly polyvalent cations and phosphoric acid wherein between 0.8 and 1.75 protons of the phosphoric acid molecule of said phosphate are neutralized by the cations, which also contains one or more fillers dispersed therein, with (B) an oxide, hydroxide or polyvalent salt of a weak acid as hardener and a carbonate foaming agent. A process of producing an inorganic foamed mass using the premix composition and a solid foamed mass produced by the process are also disclosed. The process produces a relatively elastic cross-linked structure due to mainly the secondary phosphates being neutralized versus the tertiary phosphate groups.

REFERENCES:
patent: Re33366 (1990-10-01), Barrall
patent: 3141857 (1964-07-01), Sommer
patent: 3150988 (1964-09-01), Dess et al.
patent: 3598618 (1971-08-01), Fuji et al.
patent: 4124365 (1978-11-01), Williams et al.
patent: 4171985 (1979-10-01), Motoki et al.
patent: 4207113 (1980-06-01), Yoshino et al.
patent: 4226908 (1980-10-01), Yoshino et al.
patent: 4724242 (1988-02-01), Vassileff
patent: 5773376 (1998-06-01), Melcher

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