EPOXY CURING SYSTEM AND COATINGS OBTAINED THEREOF

• Main Authors: TALMA, AUKE GERARDUS, MASLOW, WASIL, VANSWIETEN, ANDREAS PETRUS, BREUKER, FLIP THEODORUS
• Format: Patent
• Language: English
• Published: 20.01.2012
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

A peroxide-free curing system comprising 20-89.5% by weight of a compound having at least one epoxide group, 0.5-30% by weight of a polyamine, and 10-50% by weight of a co-curing agent is presented. The co-curing agent has formula (I): and/or its tautomeric formulae IIa and/or IIb: and/or formula (III): or a tautomer and/or an oligomer thereof; wherein D stands for branched (CR1R2)n or wherein p is independently 0 or 1, and X is CH2, O, or SO2 and stands for a meta- or para-benzene group; R is independently H or C1-C4 alkyl; R1 and R2 are independently H or (CH2)mCH3; wherein at least one group R2 is (CH2)mCH3 and m being 0 to 2; n being 1 to 10; and n+m is 4 to 14; R'-CH2 is R; and P stands for phenyl, or unsubstituted or hydroxy-substituted C1-6 alkyl or C2-6 alkenyl; with the proviso that at least one of R is C1-4 alkyl.