Formulation guidance
Croda recently published a comprehensive guide to cold processing entitled Blue: a practical pathway to Green. It starts with a method for comparing the energy requirements of conventional hot processing to those needed for cold mixing, showing that savings could be as high as 80%. It describes hybrid emulsifiers that consist of more than one ingredient, such as the Versaflex and PolaSperse mixtures; it describes anionic surfactants from the Crodafos and Crodasinic ranges; amphoterics like Crodateric CAB 30 and Crodateric CAS 50; and a number of sugar esters. Also described are the well known Span and Tween non-ionic emulsifiers and numerous ethoxylated triglycerides, fatty alcohols and sorbitol as well as various cationic materials suitable for processing hair conditioning products. The principal functions and properties of each of these materials are listed together with suggested applications. Other ingredients suitable for cold processing are shown and the brochure contains numerous formulations that illustrate the types of products suitable for manufacture using cold processing technology.