C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/279, 400/420
C08G 59/16 (2006.01) C08L 63/10 (2006.01) C09D 163/10 (2006.01)
Patent
CA 1230699
EPOXY ESTERS AND HIGH SOLIDS THERMOSETTING COATINGS ABSTRACT Epoxy esters having reduced viscosity and which are curable with aminoplast resins to produce water insensitive coatings are disclosed along with a method of producing them. In this method an organic solvent solution containing a 1% to 20% stoichiometric excess of polyepoxide at least 60% of which is constituted by diglycidyl ethers of a bisphenol having an average molecular weight of less than 500 and a 1,2-epoxy equivalency of from 1.8 to 2.0 is slowly added to a mixture of fatty C6-C22 monocarboxylic acid and esterification catalyst maintained at elevated reaction temperature under conditions appropriate for the reaction of 1,2-oxirane with carboxyl, and the reaction conditions are maintained until the acid number is less than 10.
443706
Sekmakas Kazys
Shah Raj
Desoto Inc.
Fetherstonhaugh & Co.
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