Compositions: coating or plastic – Coating or plastic compositions – Proteinaceous material containing
Patent
1985-02-04
1987-06-02
Dixon, Jr., William R.
Compositions: coating or plastic
Coating or plastic compositions
Proteinaceous material containing
106315, C04B 732
Patent
active
046700552
ABSTRACT:
The invention is concerned with a method for controlling the quick setting of a pourable raw mixture having a filler material, water, a cement that contains at least in part an aluminate capable of reacting with calcium hydroxide, in particular aluminum oxide cement, with an organic substance, in particular, hydro-oxycarboxylic acid, serving as a set-up retarder for the aluminate, complex forming, and stunting the growth of calcium aluminum sulfate hydroxide, and further of calcium hydroxide and in some instances, foam. In order to come up with the minimum possible number of cement components for the hardening of the raw mixture, and in order to achieve good control of the charging time and set-up process with the possibility of achieving adequate hardness in a matter of minutes, the aluminate is premixed with the organic set-up retarder and the calcium sulfate in a calcium hydroxide-free environment sometimes together with additional stabilizing components of the raw mixture. In this manner, the aluminate particles are coated by a coating of gelatinous ettringit stabilized by the organic set-up retarder to prevent reactions with the calcium hydroxide. The finished raw mixture contains at least essentially as much calcium hydroxide as is necessary for transforming the reactive aluminate. The solidification of the raw mixture is produced by the formation of a monophase whereby the initiation of solidification and the hydration characteristics are controlled by choosing the ratio of the retarder additives and the mixing temperature. The invention is also concerned with application of this method to the manufacture of building materials.
REFERENCES:
patent: 4082561 (1978-04-01), Nakagawa et al.
patent: 4341561 (1982-07-01), Britt et al.
patent: 4352693 (1982-10-01), Langdon
patent: 4357167 (1982-11-01), Kellet et al.
Capella Steven
Dixon Jr. William R.
Sicowa Verfahrenstechnik
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