Abstract
Carbohydrazide has been demonstrated to be an efficient formaldehyde-scavenging agent, particularly with dimethyloldihydroxyethylene urea (DMDHEU) resins. With a given level of carbohydrazide, a lower level of free formaldehyde was achieved with the buffered DMDHEU resin than with the unbuffered. The nature of the catalyst also had a significant effect on the formaldehyde-scavenging ability of the carbohy drazide. Although the free formaldehyde is reduced on the fabric initially, it increases after washing. A solution of the carbohydrazide in the methylated DMDHEU has long-term stability. This property would permit a preformulated product by the resin manufacturer.
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