Chemtan comes up with a new method for keeping iron - leatherbiz: Lea Leatherbiz

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Chemtan comes up with a new method for keeping iron stains out of leather

14/03/2016
US-based leather chemicals manufacturer Chemtan has said a new product called R-20 can help tanners keep staining from metals such as iron from “high-veg leathers”, such as those aimed at the automotive market.

R-20 is a chelate, a product that bonds in a particular way to metals; in this case, it is a blend of polyphosphate and alkali metal salts that helps prevent discolouration by “sequestering” iron, Chemtan has explained.

According to the manufacturer, R-20 is compliant with restricted substance lists and is REACH-registered. Chemtan has claimed it is 65% more efficient than common synthetic chelates such as ethylenediaminetetraacetic acid (EDTA), and is especially useful in “heavy-extract retans”. The product is safe for use on waterproof leathers and can help tanners produce “clean, bright colours”, it has said.



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