Hardenable coating compositions

Details Hardenable coating compositions Hardenable coating compositions

C - Chemistry, Metallurgy

08

G

402/192, 402/250

C08G 59/16 (2006.01) C08F 299/02 (2006.01)

Patent

CA 1092285

Abstract of the Disclosure A coating composition comprising as binder a reaction pro- duct of a polyepoxide with more than one 1,2-epoxide group per molecule, wherein its epoxide groups have been reacted a) with 0.01 to 0.5 NH-equivalents, based on one epoxide equivalent, of ammonia or of an aliphatic or cycloaliphatic primary or secondary amine or of an amino carboxylic acid or of a mixture of the aforementioned nitrogen compounds; and subsequently b) with 0.40 to 0.90 carboxyl equivalents, based on one epoxide equivalent, of acrylic acid or methacrylic acid or of a mixture of acrylic and methacrylic acid; and finally c) with 0.09 to 0.50 carboxyl equivalents, based on one epoxide group, of a saturated aliphatic, a cycloaliphatic or an aromatic carboxylic acid, so that at least 80 % of the epoxide groups originally present have been reacted through these three component stages. The binder may be used alone or together with additional mono- mers by radicals forming compounds or preferably by photo- polymerization in the presence of a photoinitiator.

258017

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