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US 5,211,720 AGranted
Dyeing and flame-retardant treatment for synthetic textiles
AssigneeBurlington Industries, Inc.
InventorJames R. Johnson
Life of this patent
Estimating the term…
Abstract
Thermoplastic fabrics are flame retardant treated and optionally heatset and/or simultaneously dyed in a heated flame retardant liquid in which a disperse or acid dye may be dissolved. Flame-resistant fabrics result.
Claims13
A process of simultaneously flame retardant treating and heatsetting a polyester fabric, comprising the steps of:
- (1) contacting a polyester fabric with a liquid 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 alkly (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, tetrachlorophenylene (o, m, or p), or tetrabromophenylene (o, m, or p);
- or trivalent phenenyl;
- at a temperature of at least 300.degree. F.;
- and (2) heating the fabric treated in step (1) at a temperature of about 350.degree. F. to about 600.degree. F. while holding it under tension to simultaneously heatset and fix the flame retardant to said fabric.
14 more elements
A process of dyeing and imparting flame resistant characteristics to a fabric composed of dyeable polyester fibers, comprising the successive steps of:
- (1) contacting the polyester fabric with a solution consisting essentially of a flame-retarding amount of a cyclic phosphonate ester flame retardant represented by the formulae:
- ##STR6## 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 ##STR7## 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 (CH.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, tetrachlorophenylene (o, m, or p), or tetrabromophenylene (o, m, or p);
- or trivalent phenenyl and a disperse dyestuff, an acid dyestuff or both dissolved or dispersed therein, the solution maintained at a temperature of from about 300.degree. F. to a temperature not greater than the boiling point of the solution;
- (2) allowing the fabric to remain in contact with the solution at a temperature of about 350.degree. F. to about 600.degree. F. until the dye and the flame retardant are fixed to the fiber;
- and
- (3) removing and drying the dyed and flame-retardant treated fabric.
15 more elements
Dependencies are inferred from the claim text.