| 摘要 |
Improved crease resistance and smooth drying characteristics are imparted to cellulosic fiber-containing materials, such as cotton fabric, with a minimum sacrifice in physical properties by a process including (1) applying an aqueous solution comprising at least one water-soluble polymer-forming compound possessing reactive N-methylol groups and a latent curing catalyst to the cellulosic material, (2) exposing the material in a water swollen state in the presence of formaldehyde to a reactive vapor atmosphere containing a gaseous acidic catalyst such as sulfur dioxide, and (3) drying the material in preparation for the manufacture of a durable press article therefrom. The latent curing catalyst is conveniently applied to the material from the same bath as the polymer-forming compound, but as an alternative it may be applied to the material from a separate bath, e.g., after the reactive vapor treatment and prior to the final cure. The durable press article may be made by first making the dry uncured material into an article such as a garment having hot pressed creases therein and then curing the article (delayed cure), or by first curing the material and then making the cured material into a final product (precure).
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