Method for retarding efflorescence in building materials and bui

Details Method for retarding efflorescence in building materials and bui Method for retarding efflorescence in building materials and bui

1996-04-18

1997-10-28

Marcheschi, Michael

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106802, 106823, 10628726, 106 2, 427309, 427384, 427421, 4274432, 524 4, 524650, 428688, C04B 2402, C04B 4146

Patent

active

056813856

ABSTRACT:
Efflorescence of building material, such as portland cement based building products, masonry, brick, concrete, and mortar, can be retarded by contacting the building material with polyvinylalcohol (PVOH). The PVOH may be dissolved in solvent, preferably water, and either applied to a surface of the building material, or added to the components that form the building material. The PVOH has a hydrolysis percentage above about 90%.

REFERENCES:
patent: 2576955 (1951-12-01), Ludwig
patent: 3645763 (1972-02-01), Ronzio et al.
patent: 4434193 (1984-02-01), Beckenhauer
Product Brochure describing Airvol polyvinylalcohol from Air Products; Air Products and Chemicals, Inc., Allentown, PA, 1993 (no month).
Product Brochure, "Polymer Product for Adhesives," Air Products and Chemicals, Inc., Allentown, PA, 1995 (no month).

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