Rendering building materials hydrophobic

Details Rendering building materials hydrophobic Rendering building materials hydrophobic

1976-04-29

1978-02-28

Gwinnell, Harry J.

Coating processes

With post-treatment of coating or coating material

Gas jet or blast mechanically treats coating

134 2, 134 4, 427368, 427387, B05D 312, B32B 1312

Patent

active

040768686

ABSTRACT:
A process for simultaneously cleaning and rendering building materials hydrophobic which comprises applying to the surface of the building material a solution of a hydrophobic agent having admixed therewith a filler having a surface area of at least 50 mg.sup.2 /g and after evaporation of the solvent, removing the filler residue.

REFERENCES:
patent: 1506472 (1924-08-01), Wuertz
patent: 3579540 (1971-05-01), Ohlhausen
patent: 3622529 (1971-11-01), Evans
patent: 3629183 (1971-12-01), Proriol
patent: 3644434 (1972-02-01), Hittmair et al.
patent: 3647725 (1972-03-01), Nitzsche et al.
Noll, Chemistry and Technology of Silicones, pp. 400-403, (1968).

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