Composite silicate materials

Details Composite silicate materials Composite silicate materials

1997-01-22

1998-06-16

Marcantoni, Paul

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

Inorganic silicon containing component

510512, C11D 714

Patent

active

057670617

ABSTRACT:
The present invention pertains to a crystalline hydrated layered sodium silicate/amorphous sodium silicate composite material with predetermined hardness ion sequestration properties achieved by control of the process for forming the material, and a process for making the material. The process for producing the crystalline hydrated layered sodium silicate/amorphous sodium silicate composite consists of producing a crystalline sodium disilicate by heating a sodium silicate at a specified time and temperature. The resulting material may include amorphous material, and the crystalline sodium disilicate can be either alpha-phase or delta-phase disilicate. This crystalline sodium disilicate is then hydrolyzed with up to 50.0 milliequivalents per gram of either H.sub.3 O.sup.+0 ions or OH.sup.- ions. The resulting material can sequester Ca.sup.2+ ions, Mg.sup.2+ ions, or both, depending on the results desired, processing conditions, and starting materials used.

REFERENCES:
patent: 2243027 (1941-05-01), Baker
patent: 2640756 (1953-06-01), Wills
patent: 2840456 (1958-06-01), Gooding
patent: 3918921 (1975-11-01), Pierce
patent: 4585642 (1986-04-01), Rieck
patent: 4664839 (1987-05-01), Rieck
patent: 4806327 (1989-02-01), Rieck et al.
patent: 4820439 (1989-04-01), Rieck
patent: 4950310 (1990-08-01), Rieck et al.
patent: 4959170 (1990-09-01), Ulrich et al.
patent: 5183651 (1993-02-01), Schimmel et al.
patent: 5211930 (1993-05-01), Schimmel et al.
patent: 5236682 (1993-08-01), Schimmel et al.
patent: 5268156 (1993-12-01), Schimmel et al.
patent: 5308596 (1994-05-01), Kotzian et al.
patent: 5356607 (1994-10-01), Just
patent: 5547603 (1996-08-01), Sorensson et al.
McCulloch, L., "A New Highly Silicious Soda-Silica Compound," J. Am. Chem. Soc., 75, 2453 (1952).
Johan & Maglione, "La Kanemite, nouveau silicte de sodium hydrate de neoformation," Bull. Soc. Fr. Mineral Crystallogr., 95, 371 (1972).
"Hydrated Crystalline Alkali Metal Polysilicates," The Chemistry of Silica, pp. 158-171 (1979).
Iler, R.K., "Ion Exchange Properties of a Crystalline Hydrated Silica," J. Colloid Sci., 19, pp. 648-657 (1964).
Beneke et al., "Kanemite-innercrystalline reactivity and relations to other sodium silicates," American Mineralogist, vol. 62, pp. 763-771 (1977).
J. Williamson et al., "The crystallisation of Na.sub.2 O.sub.2 SiO.sub.2 glasses," Physics and Chemistry of Glasses, vol. 7, No. 4 (Aug. 1966).

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