Contaminant dispersants useful in recycling of treated containers

A method of dispersing contaminants in a fiber slurry comprising the steps of:

• A.) optionally mixing the slurry;
• B.) adding to the slurry, while optionally mixing the slurry, a contaminant dispersant comprising
• 1) a plasticizer, and optionally
• 2) one or more ingredients selected from the group consisting of
• a) an anionic dispersant in combination with water containing either:
• i) acid or lecithin and optionally a base;
• or
• ii) a preneutralized component;
• b) a surfactant wetting agent optionally in combination with water containing either
• i) acid or lecithin and optionally a base;
• or
• ii) a preneutralized component;
• wherein if said plasticizer is the only ingredient present said plasticizer is 2,2,4-trimethyl-1,3 pentanediol diisobutyrate;
• and
• C.) mixing said fiber slurry and allowing said contaminant dispersant to disperse contaminants present in said fiber slurry, causing formation of uncontaminated fibers.