Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Patent
1997-05-19
1999-04-27
Marcantoni, Paul
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
106724, 106738, 106740, 106743, 106802, 106823, C04B 4000
Patent
active
058977040
ABSTRACT:
The properties of cement matrices are improved by one or more of the three processes, which can be performed individually, sequentially, or in any desired combination. In each instance a supercritical fluid is or includes a solvent for one of two (or more) reactants such as a monomer and a polymer initiator. The resulting mixture is infused into the matrix under supercritical conditions. The other reactant is placed into the matrix; for example, by incorporating it in the wet cement paste prior to curing. When the mixture is infused into the matrix, the reactants react and change the cement matrix in predictable, desired ways. The solvent itself may or may not be supercritical, and if it is not, it is mixed with a supercritical fluid, which might or might not be another solvent. In this manner, the inside of the matrix may be coated and/or sealed with a polymer, for example, or the entire cement matrix may be rendered relatively flexible and ductile.
REFERENCES:
patent: 4992308 (1991-02-01), Sunol
patent: 5169687 (1992-12-01), Sunol
patent: 5518540 (1996-05-01), Jones, Jr.
Marcantoni Paul
Materials Technology Limited
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