Migration of dimethyloldihydroxyethyleneurea in the thickness direction of fabric was examined under conditions of forced-draft drying at temperatures from 40°C to 160°C. The subsequently cured fabrics were subjected to de Boer migration mea surements to clarify extents of migration of reagent residues to fabric surfaces. Migration was a primary function of forced-draft drying; differences in temperature of drying exerted no additional distinguishable effect. Unhalanced and variable migrations were observed for forced-draft drying in common laboratory ovens. Durable-press ap pearance rating is discussed in relation to add-on of reagent for the products of these treatments.
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