Abstract
A highly effective mildew and rot-resistant finish has been developed in which methylated trimethylol melamine is padded on the fabric in the presence of a cure modifier (thiourea) and an acid-forming catalyst and then cured at 350° F for 1-3 min. Reasons and data are given to support the selection of the recommended resin and buffer combination. The principle of this continuous process and its mill application are discussed.
Test results are presented which demonstrate that finished fabrics may be expected to rctain 80-100% of their initial tensile strength through long periods of weathering or soil burial even when preceded by extended water leaching. Dimensional stabilization is achieved, and the finish has little or no adverse effect on hand, abrasion resistance, or shades of mineral dyed fabric. Data are cited showing the various levels of rot resistance that can be obtained by varying the resin ccmtent.
The experimental evidence obtained suggests that cellulose is chemically moditied by the resin, and it is proposed that rot resistance is achieved by this mechanism.
Get full access to this article
View all access options for this article.