A kind of biomass environment-friendly water-based color paste and preparation method thereof
A water-based color paste, biomass technology, applied in the direction of pigment paste, etc., can solve the problems of poor storage stability, single function, low degree of color retention, etc., to reduce surface tension, increase film formation, and prevent agglomeration. Effect
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[0028] 3. The preparation process of acid hydrolyzed hydroxypropyl starch is as follows: in deionized water, add a swelling inhibitor relative to the starch mass ratio of 13%, add sodium hydroxide accounting for 1.0% of the starch mass, mix and stir until dissolved, and add the step (1) Adjust the prepared acid-thinned starch into 35% starch milk, stir and alkalinize for 40 minutes, heat up to 42°C, add propylene oxide accounting for 5% of the starch mass, etherify for 14 hours, add 10% hydrochloric acid to adjust the pH to 7.0, after centrifugal dehydration, drying and sieving, the acid hydrolyzed hydroxypropyl starch can be obtained;
[0029] 4. The preparation process of acid-thinned starch used in the preparation process of acid-thinned carboxymethyl starch and acid-thinned hydroxypropyl starch is as follows: add HCl solution with a mass percentage concentration of 0.6% to the starch, and prepare starch with a concentration of 38%. Milk, heated to 50°C, acidolysis reaction...
Embodiment 1
[0035] Example 1: Biomass environmentally friendly water-based color paste (white)
[0036] Titanium dioxide 40kg, biomass stabilizer carboxymethyl starch 5kg, compound modified starch emulsion 22kg, aluminum starch dodecenyl succinate 1kg, dispersant OROTAN731A polycarboxylate sodium salt 15kg, defoamer fatty acid metal soap 0.4kg, pH adjustment Agent sodium hydroxide 0.2kg, wetting agent polyethylene glycol 3kg, demineralized water 13.4kg.
[0037] 2. Preparation of water-based color paste
[0038] a) Add titanium dioxide to the disperser according to the stated ratio, adjust the speed of the disperser to 600r / min, and sequentially add demineralized water, composite modified starch emulsion, dispersant, biomass stabilizer, wetting agent, dodecenyl Add starch aluminum succinate and pH regulator to the dispersing tank, disperse for 25 minutes to obtain a uniform slurry, increase the dispersing speed to 1500r / min, and disperse for 20 minutes.
[0039] b) Transfer the mixture...
Embodiment 2
[0050] Example 2. Biomass environmentally friendly water-based color paste (black)
[0051] Carbon black 40kg, biomass stabilizer hydroxypropyl starch 3kg, compound modified starch emulsion 25kg, aluminum starch dodecenyl succinate 2kg, dispersant high-efficiency dispersant SN-5040 polycarboxylate sodium salt 10kg, defoamer organic phosphoric acid 0.2kg of ester, 0.3kg of pH regulator sodium bicarbonate, 2kg of wetting agent polypropylene glycol, 5kg of demineralized water.
[0052] 2. Preparation of water-based color paste
[0053] a) Add carbon black to the disperser according to the stated ratio, adjust the speed of the disperser to 500r / min, and sequentially add demineralized water, composite modified starch emulsion, dispersant, biomass stabilizer, wetting agent, dodecene according to the stated ratio Starch aluminum succinate and pH regulator were added to the dispersing cylinder for 30 minutes to disperse to obtain a uniform slurry. Increase the dispersing speed to 15...
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