Multifunctional polymer for skin and sun care

However, it is difficult to formulate with these actives since they tend to have a negative effect on the viscosity, texture and stability provided by commonly used traditional anionic rheology modifiers. Sodium Acrylates/Beheneth-25 Methacrylate Crosspolymer (and) Hydrogenated Polydecene (and) Lauryl Glucoside, is a multifunctional polymer based on acrylate chemistry that enables the formulation of smooth and elegant emulsions containing high levels of electrolytic active ingredients by offering excellent efficiency as a thickener, stabiliser, and primary or auxiliary emulsifier, with improved electrolyte tolerance and unique sensory properties. It offers excellent viscosity building and yield value across a range of polymer solids providing stabilisation and suspension properties in finished formulations ranging from low viscosity lotions to high viscosity creams.

As a technology driven company, Lubrizol Advanced Materials strives to provide differentiated solutions and innovative products that help formulators respond quickly and effectively to the fast paced and complicated challenges of skin care product development. This new polymer with the designated INCI name: Sodium Acrylates/Beheneth-25 Methacrylate Crosspolymer (and) Hydrogenated Polydecene (and) Lauryl Glucoside, is an inverse emulsion based on acrylic acid, which is partially neutralised with sodium hydroxide prior to polymerisation. With the polymer’s lightly crosslinked and highly branched structure, it offers excellent rheology modification, suspension and stabilisation. It also contains very low levels of a naturally derived high HLB emulsifier, which offers the ease of making oil-in-water emulsions by simply adding the material to water with agitation. It contains a light carrier oil phase that offers broad flexibility in sensory modification. With the proper selection of product components combined with expertise in the acrylate technology, this new polymer is designed to offer best-inclass performance in emulsification, coemulsification, stabilisation and rheology modification of oil-in-water emulsion systems as compared to commonly used competing technologies in the market. With its improved electrolyte tolerance, it offers ease in formulating with electrolytic actives in functional claims-driving skin care products. It has a normal dispersion pH of 6.5-7.5. Although this polymer offers excellent potential in different applications, this paper will focus primarily on its fit in skin care and sun care applications, particularly in the presence of challenging actives and high electrolyte systems.

Methods and materials