Citroflex® Citric Acid Esters offer a broad range of benefits when used as plasticizers, solvent alternatives, lubricant additives and performance enhancers in aqueous and solvent-based polymer formulations. They are neither "Volatile Organic Compounds" (VOCs) nor "Hazardous Air Pollutants" (HAPs) and combine efficient plasticization of polymers with low toxicity, high flash points and rapid biodegradability.
Citroflex® 2 or C-2 is recommended as a plasticizer for cellulosic derivatives as well as natural resins such as dammar and ester gums. Due to its limited oil solubility, grease resistance of polymers formulated with Citroflex® 2 is enhanced. It also imparts improved light-fastness to lacquer formulations. In the personal care area, C-2 is used as a fixative for perfumes and as a plasticizer and film strengthening agent in hair sprays, nail polishes, and as an active in deodorants. Citroflex® 2 does not support fungal growth.
Citroflex® 4 or C-4 is an excellent plasticizer for both cellulosic derivatives and vinyl resins. It provides improved light stability when used in cellulose acetate. It is also an excellent de-foaming agent in protein solutions. Citroflex® 4 does not support fungal growth.
Citroflex® A-2 is recommended for use with cellulosic derivatives. It offers low warping characteristics with cellulose acetate. It has been accepted for use as a plasticizer in food wrap films by the US Food & Drug Administration. Citroflex® A-2 is used as a fixative for perfumes and as a plasticizer and film strengthening agent in hair sprays, and nail polishes, as well as a component of various ink formulations.
Citroflex® A-4, also called Acetyltri-n-butyl Citrate, is widely used in children’s toys and food contact applications. It provides many improvements over di-butyl phthalate in cellulose nitrate films, including lower volatility, better resistance to yellowing, and better adhesion to metals. Citroflex® A-4 is effective in solution coating both paperboard and foil. It is an excellent plasticizer for vinyl toys. Citroflex® A-4 is also used as plasticizer for bio-plastics such as a poly lactic acid, cellulose acetate and poly hydroxyalkanoic acid.
Citroflex® B-6 is a specially formulated citric acid ester for use in PVC medical articles such as tubing and intravenous bags where the content medium is aqueous-based. Citroflex® B-6 has low extractability into lipid media, making it particularly useful for blood products. It nearly duplicates the properties of di-(2-ethylhexyl) phthalate.
Vertellus is a specialty chemicals company creating key ingredients used in pharmaceuticals, personal care, nutrition, agriculture, and various other market areas that favor “green” technologies and chemistries.