Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1982-09-30
1984-08-21
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525119, 525510, 525514, 525118, C08L 6310
Patent
active
044670702
ABSTRACT:
A novel organic solvent based, thermosetting coating composition comprises novel epoxy ester resin having number average molecular weight (M.sub.n) about 1000 to about 5000 and being the reaction product of diepoxide, for example bisphenol-A epichlorohydrin epoxy resin, with (i) diphenol, for example bisphenol-A, in chain extension reaction, (ii) dicarboxylic acid, for example the dimer acid reaction product of the dimerization of C-18 fatty acid, in chain extension reaction, and (iii) fatty acid, for example Soya fatty acid, in chain terminating esterification reaction, which chain extension reactions and esterification reaction occur at least in part substantially simultaneously. Preferably, catalyst is employed for said chain extension and esterification reactions. The coating composition further comprises polyfunctional aminoplast crosslinking agent, for example, hexamethoxymethylmelamine, and polycarboxy functional polymeric catalyst. Also provided in a method of making a humidity and solvent resistant coating on a substrate, adapted to provide corrosion protection to the substrate, for example, to bare sheet metal of an automotive vehicle body, which method comprises applying the novel coating composition of the invention to the substrate, for example, by spraying techniques, and subjecting the applied coating to an elevated temperature for a time sufficient to cure the coating.
REFERENCES:
patent: 2759901 (1956-08-01), Greenlee
patent: 3215757 (1965-11-01), Scheibli et al.
patent: 3247136 (1966-04-01), Wynstra
patent: 3951891 (1976-04-01), Topfl et al.
patent: 4293457 (1981-10-01), Simon
patent: 4296005 (1981-10-01), DiBenedetto
Lee & Neville, Handbook of Epoxy Resins, McGraw-Hill Book Co., New York, N.Y., 1967, pp. 11-13-11-15, 11-17-11-19 & 17-21.
Kordomenos Panagiotis I.
Kurple Kenneth R.
Bleutge John C.
Ford Motor Company
May Roger L.
McDermott Peter D.
Sellers Robert E. L.
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