Message: | Carbomer body is white, acrylic acid bonded allyl sucrose or pentaerythritol allyl ether polymer; acid, moisture absorption and slightly special odor, can be dissolved in water, ethanol, glycerol. Because of the large amount of carboxyl group in its molecule, the aqueous solution needs to be neutralized with alkali to reduce the skin irritation. Carbomer neutralizer can be sodium hydroxide, potassium hydroxide, potassium bicarbonate, borax, amino acids, polar organic amines such as triethanolamine. Laurylamine and stearamine can be used as neutralizers in nonpolar systems. After being neutralized, Carbomer hydrogel is thicker between pH6 and 8, such as pH < 3 or pH > 12, viscosity decreases, and strong electrolyte can also reduce viscosity. The gel is unstable. It is easy to grow mold and lose its viscosity rapidly when exposed to sunlight. Adding antioxidants can slow down the reaction. Carbomer has many models, and different models will have different functions. For example, Carbomer 940 has short rheological properties, high viscosity, high clarity, low ionic resistance and shear resistance. It is suitable for gel and cream.
The carbomer 940 produced by Desheng produces highly effective thickening effect. It produces clear and transparent water or ethanol water gel, and its rheological property is very short. It is suitable for all kinds of cosmetics. For example, cream, lotion, cleansing cream, sunscreen, perfume, hair conditioner, etc. Carbomer 940 can produce high efficiency thickening at low dosage, thus preparing emulsion, cream, gel and transdermal preparation with wide viscosity range and different rheology. |