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US4449978A Nonwoven products having low residual free formaldehyde content 失效
无纺布产品具有低残留游离甲醛含量

Nonwoven products having low residual free formaldehyde content
摘要:
A nonwoven product formed from a nonwoven web of fibers bonded together with a binder comprising an interpolymer of vinyl acetate/ethylene/N-methylol acrylamide/acrylamide, the interpolymer comprising about 5 to 40 wt % ethylene and an amount of N-methylol acrylamide and acrylamide which is about 3.0 to 10 wt % of the interpolymer, the N-methylol acrylamide being about 1.75 to 3.5 wt % and the acrylamide about 1.25 to 8.25 wt %. Such nonwoven products have a low residual free formaldehyde content and good tensile properties.
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