Xanthan Keltrol

Keltrol Xanthan/0.3% Cellulose Sulfate 10% Polymethylene-co-guanidine NT Smooth, Good Mechanical Stability 18/15... 

Xanthan Gum/Keltrol/Kelzan/A Natural Biopolysaccharide for Scientific Water Control, Kelco Company, San Diego, California, 2nd Edition, 1975. 

Thickeners and other additives In some cases a gel coating for the multiple emulsion drops may be beneficial, for example polymethacryhc acid or carboxymethyl cellulose. Gels in the outside continuous phase for a W/O/W multiple emulsion may be produced using xanthan gum (Keltrol or Rhodopol), Carbopol or alginates. 

Several examples of W/O emulsions and W/O/W multiple emulsions based on the block copolymer of PHS-PEO-PHS, have been produced. As an illustration, a typical formulation of W/O/W multiple emulsion is described below, using two different thickeners, namely Keltrol (xanthan gum from Kelco) and Carbopol 980 (a crosshnked polyacrylate gel produced by BF Goodrich). These thickeners were added to reduce creaming of the multiple emulsion. A two-step process was used in both cases. 

To reduce sedimentation, a high-molecular-weight material is usually added, such as hydroxyethyl cellulose or xanthan gum (Kelzan, Keltrol or Rhodopol). Above a critical concentration, C, such polymer solutions show non-Newtonian flow in aqueous solution this is illustrated in Figure 21.4, which shows the variation of shear stress and viscosity with shear rate [1]. 

Two emulsifier systems were used for the preparation of O/W emulsions. The first emulsifier was Synperonic PEE 127, an A-B-A block copolymer of poly(ethylene oxide), PEO (the A chains, were about 100 EO units each) and propylene oxide PPO (the B chain was about 55 PO units), supplied by UNIQEMA. The second emulsifier system was Arlatone V-100 (supplied by UNIQEMA), a nonionic emulsifier system composed of a blend of Steareth-100 (stearyl alcohol with 100 EO units), Steareth-2 (stearyl alcohol with 2 EO units), glyceryl stearate citrate, sucrose, and a mixture of two polysaccharides, namely mannan and xanthan gum (Keltrol F, supplied by Kelco). In some emulsions, xanthan gum was used as a thickener. AH emulsions contained a preservative (Nipaguard BPX). 

Keltrol . [Kelco] Xanthan gum stabilizer for foods thickener and emulsion stabilizer for creams and lodons binder in toothpastes suspending agent. 

Materials and Methods. The xanthan sample employed was a commercial dry powder (Keltrol) from Kelco Co. Samples were hydrated without further purification by overnight stirring in deionized water, then diluted with predissolved buffer concentrate to a final solvent containing 0.8M NaCl, 0.04 M PO4,. 02% NaN3, pH 7. 

Xanthan Gum Present - In production Future - Expanding Present - In development Future - Commercialisation announced Keltrol Kelzan Rhodigel 23 Kelco Co. Rhone Poulenc/ General Mills Tate Lyle/ Hercules... 

The viscosity of xanthan gum dispersions is not very sensitive to ionic strength and pH (pH 3-12). Xanthan gum is incompatible with cationic surfactants because it is an anionic polymer. It is used as a thickener in toothpastes [15], shampoos, liquid soaps, food applications, creams, and lotions. Examples of the use of xanthan gum as a thickener in dentifrice formulations are the patent applications WO 9725019 A1 [41] and JP 08295637 A2 [42]. Xanthan gum is available from suppliers such as Calgon, Rhone-Poulenc, and TIC Gum under the trade names Keltrol, Rhodicare, and Ticaxan, respectively. 

Xanthan Gum/Keltrol/Kelzan, Technical Bull. X474, Kelco Co., San Diego, CA (1974). 

Ethoxylan 1685 PEG-75 lanolin Stabilizer, foam pharmaceuticals AMMONYX CO AMMONYX DMCD-40 BPS-10 BPS-15 BPS-20 BPS-30 BPSH-25 Gantrez AN-139 Gantrez AN-149 Gantrez AN-169 GRINDSTED Xanthan 80 GRINDSTED Xanthan 200 GRIND-STED Xanthan EASY Keltral T Keltrol TF Myristamine oxide BPS-5 Palmitamine oxide PEG-27 lanolin PEG-40 lanolin PEG-60 lanolin PEG-70 lanolin PEG-85 lanolin PEG-5 phytosterol PEG-10 phytosterol PEG-15 phy-... 

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