| 摘要 |
<p>A process for imparting durable flame retardance to cellulose containing materials have been devised whereby materials which have been impregnated with a solution having a pH of from about 7 to about 9 and a tetrakis(hydroxymethyl) phosphonium hydroxide content of from about 10 to about 40 percent by weight and dried to a moisture content of from about 0 to about 8 percent, are aerated by blowing air through the dried material prior to polymerizing the monomer on and in the cellulose materials by exposure in an enclosed chamber to a atmosphere containing gaseous ammonia and thereafter contacting the material with water, as by a fine water spray, as it leaves the ammonia chamber. The monomer is rapidly and effectively polymerized on and in the cellulose containing materials thereby imparting flame retardance having improved durability to laundering to the materials in a rapid and efficient manner which is readily adaptable to high speed commercial textile processing machinery.</p> |
