What is chemical name of Carbopol?
1 Polyacrylic acid (carbomer; carbopol)
What is Carbopol made of?
What is Carbomer? Carbomer is a term used for a series of polymers primarily made from acrylic acid. Carbomers are white, fluffy powders but are frequently used as gels in cosmetics and personal care products.
What is the chemical formula for Carbomer?
(C3H4O2)n
Polyacrylic acid/Formula
What is Carbopol base?
Carbopol®* is a water soluble polymer, used as an emulsifying, stabilising, suspending, thickening in many industries and is also used as gelling agent in hand sanitizer gels and other products.
What is the difference between Carbomer and Carbopol?
Carbopol® polymer is a product brand name of The Lubrizol Corporation. In contrast, “Carbomer” is one of the generic names that can be used to describe Carbopol® polymers. Carbomer can be defined as a high molecular weight polymer of acrylic acid crosslinked with allyl ethers of polyalcohols.
How do you mix water with Carbopol?
In pure solvent or at high concentrations in water, the Carbopol® polymer can be directly added with minimal agitation. When using pure solvent, add the polymer/solvent slurry to water, or vice versa, with vigorous (800-1200 rpm) mixing.
Is Carbomer and Carbopol same?
What is the pH of Carbopol?
Recommended use level of Carbopol Aqua CC polymer is 0.5- 2.0 wt% solids (2.5-10 wt% as supplied) and the recommend- ed pH level is <6.0; optimal viscosity and clarity are achieved at pH 4-4.5.
How do you make gel formulation?
a) Preparation of gel with Carbopol 934: Accurately weighed Carbopol 934 was taken in a beaker and dispersed in 50 ml of distilled water. Kept the beaker aside to swell the Carbopol for half an hour and then stirring should be done using mechanical/lab stirrer at 1200 rpm for 30 min.
What kind of copolymer is a carbopol homopolymer?
Carbopol interpolymers: carbomer homopolymer or copolymer that contains a block copolymer of polyethylene glycol and a long chain alkyl acid ester
What kind of cross linking agent is carbopol?
Carbopol 71, 971, and 974 are cross-linked with allylpentaerythritol and polymerized in ethyl acetate. Carbomer polymers contain 56%–68% of carboxylic acid (–COOH) groups and 0.75%–2% of cross-linking agents.
How big is the molecular weight of a carbomer?
The molecular weight of carbomer is estimated to be at 7×10 5 to 4×10 9 Da. As three-dimensionally cross-linked microgels, carbomers do not dissolve but swell to a remarkable extent in water after neutralization to form a gel. 80 Carbomers are used in liquid or semisolid pharmaceutical formulations as rheology modifiers.
How is carbopol 934 cross linked with allyl sucrose?
Each grade has its own significance and applicability in pharmaceutical dosage forms. Carbopol 934 is cross-linked with allyl sucrose and polymerized in benzene. Carbopol 71, 971, and 974 are cross-linked with allylpentaerythritol and polymerized in ethyl acetate.