Cas 9003-01-4 Carbomer 940 & Carbomer 980 Polyacrylic Acid Carbomer White Powder
Several characteristics of carbomer occupy a place in daily chemical products
Carbomer is widely used in our daily chemicals and pharmaceuticals because of its many different characteristics. But do you really understand these characteristics? What are their advantages in these applications? The following will help you answer these questions. Let you understand more intuitively how our carbomer has a place in daily chemicals and pharmacy.
||Carbomer, polyacrylic acid, carbopol
1. Carbomer's levitation
Carbomer can make the liquid system have a special yield value and rheology, and only a very low concentration can make some insoluble additives (particles, oil droplets, etc.) permanent suspension. It is precisely because of this strong suspending ability that carbomer is widely used to stabilize traditional emulsions and creams, oil droplets and water-insoluble matter in suspension solutions. Other thickeners are often not available. Very high thickening suspension power and yield value.
2. Rheology of Carbomer
Most carbomer gels have almost no rheology. When the carbomer gel is stressed, its viscosity will immediately decrease, but when the stress disappears, its viscosity will be restored immediately.
3. Carbomer sensitivity
Mechanical shearing-After carbomer is neutralized, long-term stirring or high-shear stirring will cause viscosity loss
The presence of ions-electrolytes will reduce the thickening efficiency
·Ultraviolet rays--Long-term ultraviolet radiation will reduce the viscosity of the carbomer gel when pH>/=10, when exposed to ultraviolet rays
4. Carbomer's insensitivity
·Temperature change--Carbomer gel is not affected by temperature
·Microorganisms-Carbomer does not support the growth of bacteria and mold, and the growth of bacteria and mold does not affect the gel properties. The conventional dosage is 0.2-0.4%, which can replace 3-7% of conventional emulsifiers. Carbomer polymer has almost no surfactant properties, so adding 0.1-0.5% surfactant with low HLB value can adjust the oil phase particles to be smaller to prepare white and delicate cream products.
5. Carbomer polymer emulsifier is better than general emulsifier
·Effective at a very low concentration-0.1-0.5%, replacing the traditional surfactant dosage of 3-7%
·Not restricted by HLB value and PlT
·Can emulsify any liquid oil at room temperature
·If the wax is melted during the manufacturing process, the wax can be emulsified
·Give full play to the wetting, dispersing, adhesion and other functions of surfactants to make stable emulsions
·It will not re-emulsify when re-wetting, and it is easy to prepare waterproof emulsion without film-forming agent
·The high oil phase can be dissolved in water to form (o/w) emulsion
Can be prepared: moisturizing creams, lotions, cleansing products, sunscreen products, non-alcoholic perfumes, fragrance hair conditioners (enhanced gloss, easy to comb), hand sanitizers, low-consistency sprayable emulsions and transparent microemulsions, etc. There are many methods to reduce the difficulty of carbomer in application. One method is to add carbomer to the oil phase system to slow down its swelling speed, the so-called indirect method, but it depends on the formulation. Carbomer is not very sensitive to changes in the addition process.
The comparison between Carbomer 980 and Carbomer 940, both are white powder, which is directly supplied by Desheng facto
Carbomer 980 and 940 have good thickening, emulsification, suspension and good transparency, and are widely used in skin care creams, hand washing gels, sunscreens, alcohol-free perfumes, hair conditioners and other daily chemicals In, Desheng currently produces and develops two models, namely Carbomer 940 and Carbomer 980, both of which belong to the Carbomer series. Which of the two is better? This is what many customers want to know when buying. Today, the editor of Desheng will take everyone’s question to explore.
To know this answer, we must first understand the difference between Carbomer 980 and 940. Compared with Carbomer 980 and 940, the polymer molecules are larger. Under conditions of different concentrations, temperatures, and pH values, Their viscosity changes and rheological changes are different, and their ion resistance and shear resistance are also different. . The conventional viscosity of Carbomer 980 is 40,000-80,000, and the conventional viscosity of Carbomer 940 is 50,000-65000. In contrast, the conventional viscosity of Carbomer 980 is higher.
Secondly, Carbomer 940 has better permeability than 980, but if you need to prepare 75% disposable gel, you need to use Carbomer 980, because Carbomer 940 can only be applied to a concentration below 65%, which exceeds this concentration. The whitening of the gel directly affects the appearance. But 980 has higher ion resistance than 940, so 980 can provide relatively higher viscosity and yield value when the ions increase.
The last thing to say is the difference in application. Carbopol 980 has a slight elasticity and a moisturizing and smooth skin feel when initially applied. It is suitable for medium or biased formulations that feel rich, and it is not sticky after use; Carbopol 980 Mu 940 has a clearer skin feel and is suitable for refreshing formulas. Therefore, it is not possible to generalize which of the two is better. Instead, the appropriate product should be selected according to the specific application direction.