Abstract:
What is described herein is a stable and reduced-yellowing/non-yellowing synergistic preservative composition comprising: (i) about 0.1 wt. % to about 40 wt. % of dehydroacetic acid (DHA); and about 0.1 wt. % to about 99.9 wt. % of at least one aprotic solvent. Also described herein are aqueous and non-aqueous based preservative compositions for various end-user applications, and processes for preparing and using such compositions to reduce yellowing of DHA when added to the end-user applications.
Abstract:
What is described herein is an environment-friendly, biodegradable, non-corrosive aqueous solution of isothiazolin-3-one comprising: (i) at least about 5wt. % to about 50wt. % of 1,2-benzisothiazolin-3-one (BIT); (ii) about 5wt. % to 15wt. % of neutralizing agent; (iii) about 0.01wt. % to about 20wt. % of at least one biodegradable chelating agent; (iv) about 0.01 wt. % to about 20wt. % of at least one alkyl polyglucoside, a solubilizer; (v) about 0.1 wt. % to about 2.0wt. % of polyvinyl alcohol (PVA), a crystal modifier; and (vi) about 50% to about 85% by wt. of water; and wherein said aqueous solution is free from volatile organic compounds (VOC's), glycerols, polyglycerols, derivatives of glycerols, glycols, polyglycols and/or derivatives of glycols, and wherein, the frozen aqueous solution of isothiazolin-3-one is capable of completely thawing within two hours at room temperature or at about 25 °C to about 30°C.