Aqueous coating composition

Details Aqueous coating composition Aqueous coating composition

C - Chemistry, Metallurgy

08

L

400/5045, 400/70

C08L 75/02 (2006.01) C08C 19/40 (2006.01) C08F 8/30 (2006.01) C08G 59/50 (2006.01) C08G 65/333 (2006.01) C09D 5/44 (2006.01) C09D 175/02 (2006.01)

Patent

CA 2006849

- 27 - ABSTRACT Disclosed is a novel curing system which is not associated with decomposition or production of low molecular materials. The curing system employs aqueous composition which comprises (a) a compound having in one molecule at least two carbonylcyclic urea groups represented by the following formula (1); Image (1) [wherein n is an integer of 0 to 5, X which may be the same or different represents oxygen atom, a sulfur atom or -NR1- in which R1 is a hydrogen atom, an alkyl, hydroxyalkyl or alkylene group having 1 to 5 carbon atoms.] and (b) a basic resin which has a functional group reactive with an isocyanate group and is water soluble or water dispersible by neutralizing. The present invention also provides an aqueous composition comprising a basic resin (c) which has a functional group reactive with an isocyanate group and has in one molecule at least two carbonylcyclic urea groups represented by the following formula (1); Image (1) - 28 - [wherein n and X are the same as mentioned above.] and which is water soluble or water dispersible by neutralizing.

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