HPMC dissolution method
Hot water dissolution method: Since HPMC is not dissolved in hot water, HPMC can be evenly dispersed in hot water in the initial stage, and then quickly dissolved when cooled, and the two typical methods are described as follows:
Put the required amount of hot water in the container and heat it to about 70°C. Hydroxypropyl methylcellulose is gradually added with slow stirring, and HPMC begins to float on the surface of the water, and then gradually forms a slurry that is cooled under stirring.
Add the required amount of 1/3 or 2/3 of water to the container, and heat to 70 °C, according to the method of 1), disperse HPMC to prepare hot water slurry; Then add the remaining amount of cold water to the hot water slurry, stir and cool the mixture.
Powder mixing method:
HPMC powder and a large number of other powdery substances ingredients, with a mixer to fully mix, and then add water to dissolve, then
HPMC can be dissolved at this time, without huddling and agglomeration, because each fine corner, only a little HPMC powder, water will dissolve immediately. - Putty powder and mortar manufacturers use this method.
