Different kinds of dispersants were tested and the carbon black dispersion for gel ink was prepared.

This paper analyzes the connection between dye decentralization and stability of gel ink, expounds the stability mechanism of gel ink, plus, it excogitate an experiment methods which could accurately evaluate the stability of gel ink at short notice.

China is the largest producer of Gel ink ball-point pen, with its output in recent years has been ranking first in the world, but this should be a relatively neutral pen manufacturing is the core material - Gel-ink still rely mainly on imports.

The rheological properties of carbon black gel ink were investigated by measuring of the relationship between shear-stress and shear rate.

The carbon black dispersion for aqueous ink was prepared by sand mill.

Dye disposed by membrane separation as colorant, diethylene glycol (DEG) as solvent and selecting other additives such as surfactant, lubricant, pH-adjusting agent, rust preventive, aqueous ink whose physical properties index and writing properties approach or reach import ink was made.

Inseparable affection of modern Chinese ink painting and watercolor;

Industrial production experiment on neutral deinking of waste newsprint;

This paper studied single anionic surfactant, single non-ionic surfactant and the synergistic effects of different anionic surfactant and non-ionic surfactant in the ONP neutral deinking.

Using the homemade neutral deinking agent, the conditions which affected the ONP/OMG neutral deinking process were studied.

Optimization of neutral de-inking technology for ONP

The neutral de-inking performances of the eight surfactants for old newspapers(ONP) and their synergistic effects,including the system of two component surfactant,three component surfactant,four component surfactant,with different surfactant mass ratios were investigated in this paper.