Solvent application in bottle wash using amidine based formulas
AssigneeEcolab USA Inc.
InventorsClinton Hunt, Jr., Michael Chen
Life of this patent
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Abstract
According to the invention, the compositions and methods provide for the complete removal of labels, synthetic glues and/or adhesives from a plurality of surfaces through the use of an aqueous or non-aqueous basic organic solvent and/or an amidine, optionally in combination with surfactants, chelants, acidulants and/or additional bottle wash additives. Beneficially, the compositions and methods are suitable for use at lower temperatures and pH conditions, along with under caustic-free and/or reduced caustic conditions to effectively remove such labels, synthetic glues and/or adhesives from a surface within less than about 30 minutes.
Claims19
A method for bottle washing comprising:
- applying a label removing composition to a bottle in need of washing,
- wherein the label removing composition comprises water in an amount less than about 70 wt-% of the composition, an aqueous or non-aqueous basic organic solvent and/or an amidine solvent, a surfactant, wherein the composition contains caustic in an amount from about 0 wt-% (caustic free) to about 2 wt-%, wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent;
- and
- washing the bottle within a period of time less than about 60 minutes;
- wherein the temperature of the label removing composition is below about 80° C., and
- wherein the pH of the label removing composition is between about 10 and about 14.
A composition for bottle washing comprising:
- an aqueous or non-aqueous basic organic solvent and/or an amidine solvent;
- at least one surfactant;
- and
- water in an amount less than about 70 wt-% of the composition;
- and
- wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent,
- wherein the composition is sodium hydroxide free, and
- wherein the composition has a pH between about 10 and about 14.
A composition for bottle washing comprising:
- an aqueous or non-aqueous basic organic solvent and/or an amidine solvent, wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent;
- at least one surfactant, wherein the surfactant is an anionic surfactant and/or nonionic surfactant;
- and
- water in an amount less than about 70 wt-% of the composition;
- wherein the composition contains caustic in the amount from about 0 wt-% to about 2 wt-%, and
- wherein the composition has a pH between about 10 and about 14.
Dependencies are inferred from the claim text.