Nanjing Chemical Material Corp.

Models and Characteristics of Carbopol Models and Characteristics of Carbopol

Carbopol is a white loose powder; it has a characteristic slightly odor; it has hygroscopicity and is a medicinal excipient. Carbopol is a high molecular polymer of acrylic acid bonded allyl sucrose or pentaerythritol allyl ether. Calculated according to the dry product, the carboxylic acid group (-COOH) should be 56.0%-68.0%.

Carbopol discolors with resorcinol and is incompatible with phenol, cationic polymers, strong acids and high concentrations of electrolytes.

Commonly used Carbopol has the following 11 different models:

1. Carbopol 940;

2. Carbopol 941;

3. Carbopol 934;

4. Carbopol 1342;

5. Carbopol 980;

6. Carbopol ETD 2020;

7. Carbopol AQUA SF-1;

8. carbopol Ultrez 21;

9. Carbopol Ultrez 20;

10. Pemulen TR-1;

11. Pemulen TR-2;

Different models are mainly different in viscosity. The following are the characteristics of commonly used models:

Carbopol940: short rheology, high viscosity, high clarity, low ion resistance and shear resistance, suitable for gels and creams.

Carbopol941: long rheology, low viscosity, high clarity, medium ion resistance and shear resistance, suitable for gels and emulsions.

Carbopol934: cross-linked polyacrylic resin, topical drug delivery system, stable at high viscosity, used in thick gels, emulsions, and suspensions.

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