Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1980-08-14
1982-08-31
Childs, Sadie L.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
427299, 427327, 4273855, 427386, 4273881, 4274071, 427409, 427410, 428421, 428422, 4284237, 4284258, 428446, 428458, 428461, 428483, 428500, B05D 700, B05D 102
Patent
active
043472770
ABSTRACT:
A concrete or metal substrate which is normally subject to deterioration in the presence of corrosive substances such as strong acids, particularly sulfuric acid, is rendered corrosion resistant when covered with the improved multilayered coating of this invention. In particular, a coated article, such as a coated chimney liner or flue duct, which includes a substrate, a primer coating layer of a thermosetting polymer, one or more inner coating layers of a thermosetting polymer which includes a siliceous filler, an intermediate coating layer of a thermosetting polymer which includes a non-siliceous filler, and a fluoroelastomeric top coating layer which includes a non-siliceous filler, has improved resistance to the corrosive effects of strong acids. Chimney liners, flue ducts, scrubbers, and the like which have been coated in accordance with this invention are useful in power plants, smelters, and other industrial settings where corrosive environments are present.
REFERENCES:
patent: 2777783 (1957-01-01), Welch
patent: 2809130 (1957-10-01), Rappaport
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patent: 3111426 (1963-11-01), Capron et al.
patent: 3526532 (1970-09-01), Heiberger
patent: 3799832 (1974-03-01), Reick
patent: 3874903 (1975-04-01), Wirth et al.
patent: 4154876 (1979-05-01), Segawa et al.
patent: 4237177 (1980-12-01), Slama et al.
Semanisin Dale J.
Slama William R.
Washburn Robert B.
Childs Sadie L.
General Signal Corporation
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