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Scientific insights
Precipitation polymers
Gemagique HP , Gemagique HPS and Gemagique CP1 are synthetic AMPS-based polymers used as gelling agents for aqueous systems and as texturisers and thickeners for oil-inwater ( O / W ) emulsions . The polymers are pre-neutralised , easy to use and provide formulations with excellent yield value , corresponding to superior stability even in the absence of additional emulsifiers . Emulsions formulated with Gemagique HP and Gemagique CP1 provide favourable shear-thinning effects and viscoelastic properties . Besides the rheological aspects , they provide excellent sensory properties ( low degree of stickiness / tackiness ). Based on a polymer backbone derived from sulfonic acid , O / W emulsions can be formulated even at low pH , enabling easy incorporation of e . g . AHAs ( α-hydroxy acids ). Gemagique HP , Gemagique HPS and Gemagique CP1 are compatible with organic solvents ( ethanol , isopropanol , acetone ) and are stable towards UV radiation and high shear stress . The amount of Gemagique HP and Gemagique CP1 used in personal care formulations is typically in the range of 0.5-1.2 %. Compared to the commonly used carbopols and carbomers , the performance of Gemagique HP and Gemagique CP1 are outstanding . Besides their high UV light stability , both also show high stability in alcohol concentrations of > 80 %.
Preparation of emulsions
Gemagique HP and Gemagique CP1 can be used for both direct emulsification ( i . e . adding the oil phase to the water phase ) and inverse emulsification ( i . e . adding the water phase to the oil phase ). Emulsions comprising Gemagique HP and Gemagique CP1 are brilliant and glossy , providing excellent spreadability and fast absorption .
Preparation of emulsions
Another special feature of Gemagique HP and Gemagique CP1 is the stabilization of water-insoluble liquids ( e . g . oil ) without using additional emulsifiers . The resulting O / W formulations are also known as pseudo-emulsions . Using Gemagique HP and Gemagique CP1 , emulsifierfree cream-gels can be formulated , opening the door to novel , modern formulations with special rheological profiles ( creamy , non-sticky / tacky ) and superior skin compatibility .
Aqueous gels
Aqueous gels ( e . g . hair gels ) are prepared by adding the water phase to Gemagique HP , Gemagique HPS
and Gemagique CP1 . Special care should be taken for good agitation . The transparency of the resulting aqueous gels is dependent on the amount of Gemagique HP , Gemagique HPS and Gemagique CP1 used in the formulation .
Hand sanitisers
Gemagique HP , Gemagique HPS and Gemagique CP1 show high stability in alcohol concentrations > 80 % making them excellent thickening agents in hand sanitizer formulations . Additionally , both are compatible with a broad range of essential oils and most perfume oils .
Availability
Curia has large capacity and smallscale facilities dedicated to the manufacture of Gemagiques . A complementary technical package is available upon request at clientservicesapi @ curiaglobal . com
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