标题: Offset Printing Inks Based on Rapeseed and Sunflower Oil 2 [打印本页] 作者: 清泥 时间: 2009-3-28 22:59 标题: Offset Printing Inks Based on Rapeseed and Sunflower Oil 2 Offset Printing Inks Based on Rapeseed Oil
and Sunflower Oil. Part II: Varnish and Ink Formulation
ABSTRACT: Two sets of variable oil length, alkyd resins modified
by sunflower oil (SOA) and by rapeseed oil (ROA), were evaluated
in offset formulations with mineral oils as diluent. The more
suitable alkyds for this kind of application were determined. In a
second experiment, hydrocarbon solvents were substituted by the
fatty acid methyl esters derived from rapeseed oil or sunflower oil
to produce ecologically friendly offset printing inks. Finally, the
ROA and the SOA were associated with the methyl esters derived
from the same vegetable oil. New properties of the varnishes
composed of a vegetable diluent were evaluated. The quickset
formulations with the methyl esters do not need important modifications,
as opposed to the heatset formulations.