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Polyglyceryl-3 polyricinoleate CAS No.: 29894-35-7
Polyglyceryl-3 polyricinoleate is an ester of ricinoleic acid and polyglycerol. It is usually abbreviated as PGPR and works as an emulsifier and a skin conditioner in cosmetics and personal care products. It is a yellowish, viscous liquid.
Origin
Glycerol is heated to above 200°C in a reactor in the presence of an alkaline catalyst to create polyglycerol. Castor oil fatty acids are separately heated to above 200°C, to create interesterified ricinoleic fatty acids. The polyglycerol and the interesterified ricinoleic fatty acids are then mixed to create Polyglyceryl-3 polyricinoleate.
Polyglyceryl-3 polyricinoleate helps water and oil to mix and thus works as an emulsifier in cosmetic products. It works particularly well for buttery lip balms and other soft to low-viscosity water-in-oil emulsions that have a pleasant, non-greasy skin feel. It also works as a stabilizer, thickener, and anticaking agent. It helps to adjust the product’s surface tension and viscosity. It is used in the concentrations of 0.1-3.0%.
In the chocolate industry, PGPR is used because it results in a significant reduction in the yield stress of molten chocolate. This allows the chocolate to be molded without any air bubbles, making it easier to coat the granular ingredients, while the thickness of the chocolate coating can be optimally adjusted.
The role of polyglyceryl-3 polyricinoleate in formulation
-Anticaking
-Emulsifying
-Skin conditioning
-Viscosity controlling
End Product Uses
-Lotions
-Creams
-Foundations