Ecolab Inc.

Scott I DeFields

Kim R Smith

Keith Edward Olson

Sara B Peters

Iodine or iodophor stain resistance is imparted to a surface by applying a hardenable coating composition containing an effective amount of a reducing agent having a redox potential sufficient to decolorize an iodine or iodophor stain. The reducing agent reacts with triiodide anion in the stain to change the stain coloration from a yellowish hue (e.g., yellow-white, yellow or brown) towards a lighter hue (e.g., pale yellow, white or transparent). This decolorization reaction takes place over a period of minutes, hours or days, and preferably can eventually cause the stain to disappear.

Stain resistant coating composition

Iodine and iodophor stains are masked by applying to the stain sufficient starch to impart a bluer coloration to and thereby mask the stain. The masked stain can be left as is until further cleaning or other surface repair or replacement can take place. The masked stain may instead or also be subjected to the action of a suitable decolorizing agent. Meanwhile, the masked stain typically will be much less objectionable in appearance than the original stain.

Growing community of inventors

Oakdale, MN, United States of America

Scott I DeFields