additive for printing ink的用法和样例：
- Use waste vitriol、 quadratic aluminum dust as stuff to produce alumina for printing ink was described in this paper.
- Reducers A medium added to thick printing ink to make it thinner and suitable for printing.
- The advances in chemical modification of (alkyl) phenolic resins for printing inks were reviewed.
- Azo pigment: One of the most important groups of chemical pigment for printing ink manufacture. The prime raw materials for azo pigment are a diazo component such as aromatic amine and a coupling component such as phenolic compound.