Cellular Technology Offers New Diamine Scavenger for Viscoelastic Foams

Cellular Technology International now offers a new product called CELLTECH DAS®, which is a liquid additive designed to scavenge carcinogenic diamines such as TDA (toluene diamine) and MDA (methylene dianiline) in under-indexed foams. In viscoelastic foams manufactured at index below 89, these carcinogenic products can form in significant amounts and present a hazard to the end consumer.

CERTIPUR®, the polyurethane foam quality standard currently limits 2,4-TDA, 4,4’-MDA and the sum of 2,4-TDA and 4,4’-MDA to a maximum level of 5.0 ppm (mg/l) with respect to migration and extraction. CELLTECH DAS is effective in scavenging TDA and MDA to below this level when used at 0.6-1.0 pphp use levels, depending on formulation.

CELLTECH DAS is low in VOCs (<33 ppm as measure on the product alone) and when used at recommended levels of 0.6-1.0 pphp in viscoelastic foams, contributes a (calculated) maximum of 0.8-1.0 ppm of VOCs to the final foam. (Actual VOCs from CELLTECH DAS are considerably less than this calculated value because the reaction product of DAS and TDA/MDA is a non-VOC.)

For additional information, contact Cellular Technology International at +1 770-514-8610 or email info@cellulartechnology.us