Fire retardants for Cellulose

Extra washing after curing including drying costs
Softer handle
fewer dyestuff restrictions including brilliant shades
Much less free formaldehyde development
Shorter after burning time
Less smoke development
No licence required, including minimize the corresponding
restrictions and costs

N- methylol phosponopropionamide finish

Demanding process, including moisture                 
Control, ammonia vapour treatment and                 
Oxidation
Smaller wash shrinkage                                           
Better stability to hydrolysis                        
Somewhat better ripping strength                           
Less odour bothering                                               
Also for fibre blends with small cellulose               
content
Preferably for large production runs, to                   
process costs including machinery                          
requirements

THPC-Urea finish                                          

Durable fire retardants for cellulose: Reasonable laundering durability must be incorporated into any finish destined for apparel use. The most successful durable fire retardants for cellulose are based on phosphorous-and nitrogen containing chemicals that can react with the fibre or form crosslinked structures on fibres. Two of most permanent fire retardant finishes for cellulose are THPC-(hydroxymethyl phosphonium chloride) with urea and N-methylol phosponopropionamide.
Comparison of two permanent fire retardant finishes for cellulosics

Non-durable fire retardants for cellulose: Inorganic salts provide fire retardancy on cellulosic material that will not be exposed to water, rain or perspiration. A mixture of boric acid and borax is still an effective fire retardant for cotton. Ammonium salts of strong acids, especially phosphoric acid (P/N synergism) are particularly useful as non-durable fire retardants for cellulose. Three commercially important products are diammonium phosphate, ammonium sulfamate and ammonium bromide. The water insoluble ammonium polyphosphate is an effective fire retardant and is added to coatings and binder systems.

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