In these days, according to increased environmental regulations, to reduce the VOC content in paints and inks efforts are now in progress. A lot of research have progressed hydrocarbon solvents substitute with vegetable oil or ester in the printing ink but it is restricted to use vegetable oil in the inks because of high molecular weight and viscosity. Oil ester currently developed for printing inks still have some drawbacks, but overall the printability and print quality when using ester than hydrocarbon solvents are showing good results.
Thus, in this paper, I studied about the properties variation of the varnish and inks according to vegetable ester, after I reacted vegetable ester using the vegetable fatty acid and ethyl alcohol, butyl alcohol. The compared in order of average molecular weight by the GPC method, rheological properties were found by rotational rheometer, and emulsion behavior were compared by high speed emulsification tester.
2-2. Vegetable fatty acid esters의 물성 측정
2-3. Varnish 물성 측정
2-4. Ink의 물성 측정
3. 결과 및 고찰
3-1. Vegetable fatty acid esters의 물성 측정
3-2. Vegetable fatty acid esters에 따른 varnish의 물성 변화
3-3 Vegetable fatty acid esters에 따른 ink 물성 변화
3-4 Vegetable fatty acid esters에 따른 ink의 인쇄 적성 변화