Coating processes – Particles – flakes – or granules coated or encapsulated – Inorganic base
Patent
1989-05-01
1990-05-08
Lusignan, Michael
Coating processes
Particles, flakes, or granules coated or encapsulated
Inorganic base
166280, 252 8551, B05D 700
Patent
active
049237144
ABSTRACT:
Ceramic particulates useful as a proppant in hydraulic fracturing and in gravel packing operations is provided which comprises a ceramic (sometimes vitreous) core surrounded by an epoxy resin coating. Novolac epoxy resin compounds without any substantial acid soluble filler are used to coat ceramic particulates similar to those discloses in U.S. Pat. Nos. 4,680,230 and 4,632,876. The result is a product which combines the excellent solvent resistance of the ceramics with the acid resistance of the resin. The resin coating gives the added benefits of lower specific gravity and improved crush resistance.
REFERENCES:
patent: 3026938 (1962-03-01), Huitt et al.
patent: 3506598 (1970-04-01), Groff et al.
patent: 3929191 (1975-12-01), Graham et al.
patent: 3935339 (1976-01-01), Cooke, Jr.
patent: 4162165 (1979-07-01), Schwab
patent: 4349645 (1982-09-01), Griggs
patent: 4397967 (1983-08-01), McDonald
patent: 4418161 (1983-11-01), Matsushima et al.
patent: 4443347 (1984-04-01), Underdown et al.
patent: 4518039 (1985-05-01), Graham et al.
patent: 4527627 (1985-07-01), Graham et al.
patent: 4527627 (1985-07-01), Graham et al.
patent: 4529751 (1985-07-01), Saeki
patent: 4553596 (1985-11-01), Graham et al.
patent: 4581253 (1986-04-01), Evans et al.
patent: 4585064 (1986-04-01), Graham et al.
patent: 4632876 (1985-12-01), Laird et al.
patent: 4660642 (1987-04-01), Young
patent: 4664819 (1987-05-01), Glaze et al.
patent: 4680230 (1987-07-01), Gibb et al.
patent: 4733729 (1988-03-01), Copeland
ENC 1235, 1273, 1280, 1299 Novolac Expoxy Resins, Resins Department, Ciba-Giegy Corporation, 1982, Product Data.
"EPN 1138 and EPN 1139 Epoxy Phenol Novolac Resins for Coating", Resins Department, Product Data, Ciba-Giegy, 1981.
"ECN 1235, 1273, 1280, 1299 Novolac Epoxy Resins", Resins Department, Product Data, Ciba-Geigy, 1982.
"Silane Coupling Agents in Mineral-Filled Composites", Product Data, Union Carbide Corporation, Mar., 1968.
Berntson Leslie G.
Gibb James L.
Laird James A.
Kirn Walter N.
Little Douglas B.
Lusignan Michael
Minnesota Mining and Manufacturing Company
Sell Donald M.
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