Rapid removal of iodine stains
AssigneeEcolab Inc.
InventorsKim R. Smith, Robert D. P. Hei, Mark Levitt
Life of this patent
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Abstract
The present invention relates to an improved method of removing iodine stains comprising contacting a surface having an iodine stain with a liquid cleaning composition for a sufficient time to decolorize the stain said cleaning composition comprising about 1% to about 100% by weight of at least one compound selected from the group consisting of salicylic acid, salicylic acid derivatives and mixtures thereof, and at least one solvent. The liquid cleaning composition has an adjusted pH of about 1-14.
Claims24
A method of removing iodine stains comprising the steps of contacting a surface having an iodine stain with a liquid cleaning composition to decolorize said iodine stain, said liquid composition comprising about 1% to about 100% by weight of at least one compound selected from the group consisting of salicylic acid, salicylic acid derivatives and mixtures thereof and at least one solvent with which said at least one compound is soluble or emulsifiable, said liquid composition having an adjusted pH of about 1-14 and removing said decolorized iodine stain from said surface.
A method of removing stains of iodine complexed with polyvinylpyrrolidone comprising the steps of:
- a) applying a cleaning composition to a surface having a stain of iodine complexed with polyvinylpyrrolidone, said cleaning composition comprising:
- i) at least one compound selected from the group consisting of salicylic acid, salicylic acid derivatives, or mixtures thereof;
- and
- ii) at least one solvent with which said at least one compound is soluble or emulsifiable;
- and
- b) allowing said cleaning composition to decolorized said stain of iodine complexed with polyvinylpyrrolidone;
- and
- c) removing said decolorized stain of iodine complexed with polyvinylpyrrolidone from said surface.
A method of removing iodine stains comprising the steps of contacting a surface having an iodine stain with a liquid cleaning composition to decolorize said iodine stain, said liquid composition comprising about 1% to about 100% by weight of at least one compound selected from the group consisting of salicylic acid, salicylic acid derivatives and mixtures thereof and at least one solvent selected from the group consisting of C1 to C6 alkanols, ethers, glycol ethers, water and mixtures thereof, said liquid composition having an adjusted pH of about 1-14 and removing said decolorized iodine stain from said surface.
Dependencies are inferred from the claim text.