DETAILED DESCRIPTION What is claimed: 1.
A process of simultaneously dyeing and flame retarding an aramid fiber, comprising the steps of: (1) contacting dyeable poly(m-phenyleneisophthalamide) fibers or fabric with a solution consisting essentially of a flame-retarding amount of a cyclic phosphonate ester flame retardant represented by the formulae: ##STR4## where a is 0 or 1; b is 0, 1 or 2, c is 1, 2 or 3 and a+b+c is 3; R and R' are the same or different and are alkyl (C.
sub.
1 -C.
sub.
8), phenyl, halophenyl, hydroxyphenyl, tolyl, xylyl, benzyl, phenethyl, hydroxyethyl, phenoxyethyl, or dibromophenoxymethyl; R.
sup.
2 is alkyl (C.
sub.
1 -C.
sub.
4); and R.
sup.
3 is lower alkyl (C.
sub.
1 -C.
sub.
4) or hydroxyalkyl (C.
sub.
1 -C.
sub.
4); or ##STR5## where d is 0, 1 or 2; e is 1, 2 or 3; R.
sup.
2 is alkyl (C.
sub.
1 -C.
sub.
4); R.
sup.
3 is lower alkyl (C.
sub.
1 -C.
sub.
4) or hydroxyalkyl (C.
sub.
1 -C.
sub.
4), R.
sup.
4 is alkyl (C.
sub.
1 -C.
sub.
4) phenyl, halophenyl, hydroxyphenyl, hydroxyethyl, phenoxyethyl, dibromophenoxyethyl, tolyl, xylyl, benzyl, or phenethyl; and R.
sup.
5 is monovalent alkyl (C.
sub.
1 -C.
sub.
6), chlorophenyl, bromophenyl, dibromophenyl, tribromophenyl, hydroxyphenyl, naphthyl, tolyl, xylyl, benzyl, or phenethyl; divalent alkylene (C.
sub.
1 -C.
sub.
6), vinylene, o-phenylene, m-phenylene, p-phenylene, tetrachlorphenylene (o, m, or p), or tetrabromophenylene (o, m, or p); or trivalent phenyl and a disperse dyestuff, an acid dyestuff or both; and (2) heating the aramid fiber treated in step (1) to fix said dye to said fiber.
2.
The process of claim 1, in which the solution contains a tinctorial amount of a disperse dye.
3.
The process of claim 1, in which the solution contains a tinctorial amount of an acid dye.
4.
The process of claim 1, in which the solution is applied by padding onto an aramid fabric.
5.
The process of claim 1, in which the flame retardant plus dyestuff are applied as a print paste.
6.
The process of claim 1, in which the fiber or fabric is heated in step (2) at a temperature in the range of about 350
|
Manufacturing Materials 
