Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1976-07-26
1977-11-29
Dixon, Jr., William R.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
138145, 260 47EN, 260 37EP, 427 29, 427 46, 427195, 427318, 428418, 428 36, F16L 914, B05D 104, B05D 302, B32B 1508
Patent
active
040606554
ABSTRACT:
An article comprising a metal substrate in the form of a pipe or a container, said substrate being coated with a hardened epoxy resin composition formed from (A) a solid epoxy resin based on epichlorohydrin and a component selected from the group consisting of (a) 4,4'-diphenylolpropane, (b) 4,4'-diphenylolmethane and (c) a combination of (a) and (b), (B) from 1 to 12% by weight based on the epoxy resin of at least one hardener for said epoxy resin selected from the group consisting of (d) compounds of formula ##STR1## wherein R is hydrogen or an alkyl group of 1 to 6 carbon atoms or an aromatic hydrocarbon residue with 6 to 10 carbon atoms, (e) compounds of formula ##STR2## wherein R is hydrogen or an alkyl group having 1 to 6 carbon atoms or an aromatic hydrocarbon residue with 6 to 10 carbon atoms and (f) an adduct of any one of compounds (d) and (e) to an epoxy resin with an epoxy equivalent weight of from 50 to 2000, (C) a flow agent, (D) a thixotropic agent and a process of coating such metal substrate by means of heating said substrate to a temperature above the melting temperature of the epoxy resin component of an epoxy resin coating composition and sufficient to cure the said epoxy resin and powder-coating the said epoxy resin composition onto the hot surface of the substrate to provide a substantially uniform coating thereon by immediate hardening without any further processing step by means of the heat capacity of the hot substrate.
REFERENCES:
patent: 3053823 (1970-03-01), Richart et al.
patent: 3438937 (1969-04-01), Christie
patent: 3533985 (1970-10-01), Lantz et al.
patent: 3694407 (1972-09-01), Krikorian
patent: 3842035 (1974-10-01), Klaren
Gemmer Erwin
Johannes Gerhard
Konig Hans-Joachim
Reinhard Gunter
Dixon Jr. William R.
Hoechst Aktiengesellschaft
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