u00b0 c to a wet pick up of 14 percent and continuously advanced into the enclosure 10 39 as shown in fig5 the fabric is continuously advanced into the first reaction chamber 12 39 of fig6 ammonia gas is passed into the spray pipes in the reaction chamber 12 39 and is impinged at ambient temperature about 20 u00b0 c on the fabric continuously advancing therethrough the fabric is continuously advanced from the first reaction chamber about guide roll 18 39 and into second reaction chamber 12 39 constructed similarly to the first reaction chamber and in which ammonia gas is also impinged on the fabric at ambient temperature a polymerized phosphorus containing material is deposited on and within the fabric in the two reaction chambers the fabric is guided about a series of six spaced guide rollers 26 39 three of the guide rolls located near the top of the enclosure and three located near the bottom a pair of water spray nozzles 80 39 are disposed among the guide rollers to spray ambient temperature water uniformly on both sides of the fabric to remove unpolymerized materials and residual reactants the spray water running off of the fabric is collected in a catch pan 82 39 at the bottom of the enclosure and removed the fabric is continuously removed from the enclosure 10 39 for further processing including washing and passing the fabric through a hydrogen peroxide containing bath to oxidize the polymerized material while the foregoing specification describes the general principles and nature as well as preferred embodiments and modifications of the present invention still other modifications may be made by those skilled in the art without departing from the.