Liquid two-component coating compositions

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The ratio of numbers of functional groups of polyamine curing agents (B): aminourethane (C) is generally from 5:95 to 95:5.
The ratio preferably is from 20:80 to 80:20 and particularly preferably from 30:70 to 70:30.
The polyamines useful as components (C2) preferably have the formula ##STR1## in which R.
sup.
1 is a divalent hydrocarbon radical, preferably a straight-chain or branched alkylene radical having 2 to 18 carbon atoms, preferably 2 to 4 carbon atoms, R.
sup.
2 is hydrogen, alkyl having 1 to 8 carbon atoms, preferably 1 to 4 carbon atoms, or hydroxyalkyl having 1 to 8 carbon atoms, preferably 1 to 2 carbon atoms, in the alkyl radical, R.
sup.
3 is selected from the same groups of residues as R.
sup.
2, and R.
sup.
2 and R.
sup.
3 may also form a cyclic ring compound, preferably a 5-, 6- or 7-membered aliphatic ring, or, if R.
sup.
2 is hydrogen, R.
sup.
3 may also be a group of the formula C.
sub.
1 to C.
sub.
8 -alkyl-COO--CH.
sub.
2 --CH(OH)--CH.
sub.
2 --, C.
sub.
1 to C.
sub.
18 -alkyl--O--CH.
sub.
2 --CH(OH)--CH.
sub.
2 --, NC--CH.
sub.
2 --CH.
sub.
2 -- or C.
sub.
1 to C.
sub.
18 -alkyl--CHOH--CH.
sub.
2 --, and A is a chemical bond or is --(R.
sup.
1 --NH).
sub.
r --R.
sup.
1 NH in which r is zero or an integer from 1 to 6 and R.
sup.
1 is as defined above.
Examples of polyamines useful in the invention include poly-alkyleneamines, such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, propylenediamine, dipropylenetriamine etc.
, and also 2,2,4- and/or 2,4,4-trimethylhexamethylenediamine, bis(3-aminopropyl)amine, N,N-bis(3-aminopropyl)ethylenediamine, neopentanediamine, 2-methyl-1,5-pentanediamine, 1,3-diaminopentane, hexamethylenediamine etc.
, and also cycloaliphatic amines such as 1,2- or 1,3-diaminocyclohexane, 1,4-diamino-3,6-diethylcyclohexane, 1,2-diamino-4-ethylcyclohexane, 1-cyclohexyl-3,4-diaminocyclohexane, isophoronediamine and reaction products thereof 4,4'-diaminodicyclohexylmethane and -propane, 2,2-bis(4'-amino-cyclohexyl)methane and -propane, 3,3'-dimethyl-4,4'-di-aminodicyclohexylmethane, 3-amino- 1-cyclohexylaminopropane, 1,4-bis(3-aminopropyl)piperazine, 1,3- and 1,4-bis(aminomethyl)cyclohexane