Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1982-09-30
1985-01-01
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
525514, 528123, 528254, C08K 1100, C08G 5916, C08L 6310
Patent
active
044916418
ABSTRACT:
A novel epoxy ester resin adapted for use in a thermosetting coating composition is provided, 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 and at a temperature reaching at least about 137.degree. C. (280.degree. F.). Preferably, catalyst is employed for said chain extension and esterification reactions. Also provided is a novel, solvent based, thermosetting coating composition comprising the novel epoxy ester resin of the invention and polyfunctional aminoplast crosslinking agent. Also provided is 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: 3215757 (1965-11-01), Scheibli et al.
patent: 3951891 (1976-04-01), Topfl et al.
patent: 4296005 (1981-10-01), Di Benedetto
Lee & Neville, Handbook of Epoxy Resins, McGraw-Hill Book Co., New York, N.Y., 1967, pp. 11-13 to 11-15, 11-17 to 11-19 and 17-21.
Kordomenos Panagiotis I.
Kurple Kenneth R.
Bleutge John C.
Ford Motor Company
May Roger L.
McDermott Peter D.
Sellers II Robert E. L.
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