Shandong Kundu Chemical Co., Ltd

KDOCEL   Hydroxyethyl Cellulose   (HEC) is one kind of non-ionic soluble   cellulose ether , which can be dissolved in hot or cold water and has the characteristics of thickening, suspending, adhesive, emulsion, film forming, water retention and protective colloid etc., which is widely used in water based paints, following is our lab testing steps to make water based paints using HEC:  1. Add the prescribed amount of water, and add KDOCEL Hydroxyethyl Cellulose at a low speed of stirring, after Cellulose Ether dispersed, then add the prescribed amount of pH agent.     2. Add Bactericidal and mildew repellent agent, Dispersant, Defoamer, Glycol and other auxiliaries in sequence.    3. After dispersing and stirring evenly, increase the stirring speed and start to add pigments and fillers such as titanium dioxide and heavy calcium.  4. Disperse at high speed for 30-40 minutes, then reduce stirring speed, add emulsion, defoaming agent, Texanol ,pH agent, fungicidal and Bactericidal and mil

HPMC  can be divided into quick-dissolving (surface treated) and hot-dissolving (non-surface treated) types. The quick-dissolving product quickly disperses in cold water and disappears into the water. At this time, the liquid is not viscous, because HPMC is only dispersed in water, not really dissolved. About 2 minutes, the viscosity of the liquid gradually increases and forms a transparent viscous gel. For hot soluble type, it clumps in cold water, but in hot water, it disperses rapidly and disappears in hot water until the temperature drops to a certain temperature, then it slowly appears viscous until it forms a transparent viscous colloid. The reason for cold water caking is that the outer layer of cellulose powder encounters cold water and immediately starts to be viscous and thickens into a transparent colloid, while the cellulose inside does not come into contact with water and is surrounded by colloid, or is in powder form but slowly dissolves. In practice, hot water is not nee