| abstract |
A crosslinker composition based on linear aliphatic or aromatic di-carbonyl derivatives such as glyoxal, succin aldehyde, adipic aldehyde, octandial, phtal-aldehyde, terephtal-aldehyde etc. all having an even number of carbon atoms in the carbon backbone connecting the two functional groups presented as oligomers, at least as cyclic dimers and trimers and H active compounds such as mono-alcohols, polyesters, acrylics, hydrophobic or hydrophilic silica etc. active at low temperature with or without the presence of a catalyst selected from strong acids. The crosslinker is intended to be used on porous substrates giving no rise of any aldehyde during the curing process or in service in water borne coatings as well as in solvent borne coatings. |