Biocide applications personal care products

Aliphatic tertiary amines can be oxidised to A-oxides using 35% w/w H2O2 alone [149], typically in water at 1.1 1.0 molar ratio for 4-5 hours at 60-65°C (example for dodecyldimethylamine). This reaction is employed worldwide on a scale in excess of 25 ktpa, to make fatty amine oxides, which are used as surfactants [150] in personal care products (e.g. shampoos) and as thickener components in hypochlorite household bleach. N-Methylmorpholine A-oxide has a growing use as a solvent for cellulose in the manufacture of a new cellulose fibre [151]. Substituted oxazolidine N-oxides are relatively new user-friendly biocides [152]. A further application involving an aliphatic tertiary amine oxide intermediate is glyphosate manufacture (section 9.5.1.7.6). 

CEFIC has estimated that more than 60% of the 2,000 biocidal active ingredients and of the 20,000 formulated biocidal products containing them currently marketed in the EU may eventually be withdrawn as a result of the implementation of the Biocidal Products Directive. Avecia believes the BPD is likely to restrict new product development and increase the costs of notifying and listing active substances, meaning that research on new actives will be difficult to justify. Avecia Protection Hygiene develops and produces antimicrobials for more than 25 applications in industrial preservation, disinfection, plastics, textiles and personal care, and it continues to develop new products. 

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