Carboxyvinyl polymer

Other thickeners used include derivatives of ceUulose such as methylceUulose, hydroxypropylmethylceUulose, and ceUulose gum natural gums such as tragacanth and xanthan (see Cellulose ethers Gums) the carboxyvinyl polymers and the poly(vinyl alcohol)s. The magnesium aluminum siHcates, glycol stearates, and fatty alcohols in shampoos also can affect viscosity. 

Glycerin, propylene glycol, and polyethylene glycol thickened with carboxyvinyl polymers (Carboxamer NF) provide organic solvent bases. Consistencies ranging from soft jelly to peanut butter can be achieved. 

A. water. They include cellulose ethers, pregelatinized starches, polyethylene oxides, alginates, carrageenans, polyacrylamide, carboxyvinyl polymers and polyvinyl alcohol. 

The cellulose derivatives are not the only polymers used in this technology carbomers or carboxyvinyl polymers are often used as well. Sheng et al. from... 

Acritamer acrylic acid polymer Carbopol carboxy polymethylene, polyacrylic acid carboxyvinyl polymer Pemulen Ultrez. 

Fluocinonide (50 mg) is dissolved in crotamiton (7 g) with warming, and thereto is added liquid paraffin (10 g), propylene glycol (10 g), polyoxyethylene lauryl ether (1 g), a 4% aqueous solution of carboxyvinyl polymer (20 g), purified water (47 g), and a 1% aqueous solution of disodium edetate (1.2 g). 

Thixotropic suspensions with the characteristics described above can be prepared using a three component suspending agent system disclosed in U.S. Pat. No. 3,852,085, issued Dec. 3, 1974. This system consists of (a) carboxymethyl cellulose and (b) carboxyvinyl polymer in a total amount of about 36 to 65 wt% with the relative amount of (a) to (b) varying from a weight percent ratio of about 1 4 to 4 1 and (c) magnesium mon-tmorillonite clay in a concentration of about 35 to 64 wt%. 

Chem. Descrip. Sodium carboxyvinyl polymer Uses Detergent slurry emulsifier, thickener suspending agent in aq. and orgTaq. suspensions emulsifier for silicone fluids and org. soivs. viscoelastic index improver used in detergents, toiletries, polishes, paints, textile industry... 

Inorganic electrolytes (NaCl), carboxymethylcellulose and derivatives, carboxyvinyl polymers, PEG... 

Kuzuhara, A. Nakamura, Y. Acidic hair dyes containing carboxyvinyl polymers and xanthan gum. Jpn. Kokai Tokkyo Koho JP 2005104883, 2005 Chem. Abstr. 2005,142, 360332. 

Recently, a new carboxyvinyl polymer that has addressed this problem has become commercially available (trade name Carbopol Ultrez 10 ). This polymer shows a low viscosity even at a high concentration and exhibits no large aggregated balls. However, after neutralization, the viscosity enhancement effect is the same as the traditional materials. Figures 5 and 6 show viscosity enhancement at initial dispersion and after neutralization, respectively [5]. 

Fig. 4 Influence of a salt on the viscosity of crosslinked (1% concentration) carboxyvinyl polymers [5].

Figure 10 shows particle-size distribution of liquid paraffin (10%) emulsion using a carboxyvinyl polymer (0.5%). In general, several... 

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