Rosin phenolic resins for printing inks
OwnerThomas A. Fontanainventor
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Abstract
Rosin modified phenolic resins are prepared by reacting together rosin, fatty acid, phenol and aldehyde. The fatty acid may be Monomer (derived from the fatty acid dimerization process). The reaction mixture may optionally include α,β-olefinically unsaturated carboxylic acid(s) or anhydride(s), and polyol(s). The resin may be dissolved in a solvent to form a varnish. The resin may be used as a component of inks for lithographic or gravure printing.
Claims29
A process for preparing a resin, the process comprising reacting components at elevated temperature, the components comprising rosin, fatty acid, aldehyde and phenolic compound, where phenol constitutes at least 25 wt % of the phenolic compounds.
A process for preparing a resin, the process comprising reacting components at elevated temperature, the components comprising rosin, aldehyde, phenolic compound and fatty acid, where the fatty acid constitutes at least 30 wt % of the components.
Dependencies are inferred from the claim text.