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Abstract

A method of reducing the emission of formaldehyde from fibrous insulation having thereon a formaldehyde-based binder is provided. In particular, an amine-based compound is added after the formaldehyde-based has been cured and prior to the insulation being processed for storage or shipment to customers. The amine-based compound may be added after binder cure and either prior to the insulation product being cut into nodules or after the insulation product has been cut into nodules. Non-limiting examples of amine-based compounds include urea, melamine and/or dicyandiamide. Once applied to the insulation product, the amine-based compound acts as a formaldehyde scavenger to reduce the emission of formaldehyde into the air. In preferred embodiments, the amine-based compound is added with an antistatic agent. The post-cure addition of urea to fibrous insulation reduces the emission of formaldehyde into the atmosphere to meet stringent GREENGUARD standards and achieve GREENGUARD certification for formaldehyde emission.

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First Claim