Abstract: A water soluble product suitable for rendering textile materials flame retardant is produced by condensing (a) at least one hydroxymethyl phosphorus compound selected from the group consisting of(CH.sub.2 OH).sub.4 P--Y and (CH.sub.2 OH).sub.3 Pwith (b) about 0.33 to 3 times the molar amount of at least one substituted phosphoramide of the formulaPO(NR.sup.1 CH.sub.3)(NR.sup.2 CH.sub.3)(NR.sup.3 CH.sub.3)whereinR.sup.1 and R.sup.2 each independently is H or CH.sub.2 OH,R.sup.3 is H, CH.sub.2 OH or CH.sub.3, andY is an equivalent amount of at least one anion of an acid, such as chloride, bromide, carbonate, nitrate, sulfate, phosphate or carboxylate.Advantageously, the hydroxymethyl phosphorus compound is tetrakis(hydroxymethyl)phosphonium chloride or tris(hydroxymethyl)phosphine, and is present in about 1 to 3 times the phosphoramide which is preferably tris(N',N",N'"-methyl)phosphoramide [OP(NHCH.sub.3).sub.3 ].

Abstract: New aminoalkylphosphonic acid esters of the formula ##STR1## wherein R is H or alkyl of up to 4 carbon atoms,R.sub.1 is H or CH.sub.3,R.sub.2 is H, CH.sub.3 or --C(R.sub.1)(NHR.sub.3)P(O)OR.sub.2, andR.sub.3 is H,--C(R.sub.1)(R.sub.2)P(O)(OR).sub.2 or --CH.sub.2 CH.sub.2 NHC(R.sub.1)(R.sub.2)P(O)(OR).sub.2,are prepared from (RO).sub.2 P(O)H, NH.sub.3 or ethylene diamine and formaldehyde, glyoxal, acetaldehyde or acetone. These new compounds can be reacted with methylol phosphorus compounds of the formulaP(CH.sub.2 OH).sub.4 Y or P(CH.sub.2 OH).sub.3where Y is an equivalent amount of the anion of at least one acid, and optionally additionally with urea. The reacting molar ratio of the hydroxymethyl phosphorus compound to the aminoalkylphosphonic acid ester is up to about 6:1 and preferably between about 0.5:1 and 3:1.

Abstract: An improvement in a process for imparting flame retardant properties to textile materials by reacting the textile materials with phosphorus-containing compounds or salts thereof and aftertreating the textile material with a salt of a heavy metal is disclosed. In the improved process, the phosphorus-containing compounds are applied in correlation with antimony oxide and a polymeric halogen-containing material. Reduced amounts of phosphorus may be affixed on the textile material (thus substantially reducing fabric shrinkage during processing) without substantially adversely affecting the flame retardant properties of the treated material. Titanyl sulfate is utilized as the heavy metal salt. In addition, the treatment is applicable to cellulosic fibers, e.g., cotton or rayon, as well as to wool, silk and other natural and man-made fibers or blends of these fibers.

Abstract: A process for imparting durable flame-retardant properties to cellulosic fiber-containing materials without detrimentally affecting other properties (e.g., shrinkage, hand, etc.) of the material is disclosed. The material is contacted with cyanamide; at least one phosphonic acid represented by the structural formula: ##EQU1## wherein R.sup.1 represents a monovalent radical selected from the group consisting of hydrogen, halogen, hydroxy, lower alkyl and lower alkoxy, and wherein R.sup.2 represents a monovalent radical selected from the group consisting of hydrogen and lower alkyl; antimony oxide; and a polymeric halogen-containing material.

Abstract: A water soluble product suitable for rendering textile materials fire retardant is produced by condensing a poly (.alpha.-hydroxyalkyl) phosphorus compound of the formula(RCHOH).sub.n (RCHR').sub.4-n P-Y or(RCHOH).sub.m (RCHR').sub.3-m Pand a nitrogen compound of the formula RNH.sub.2, HO-R"NH.sub.2 or ##EQU1## wherein EACH R is independently hydrogen or alkyl of 1 to 3 carbon atoms,R' is OR or ##EQU2## R" is alkylene of 1 to 3 carbon atoms, Y is an equivalent amount of the anion of at least one acid,N is an integer from 2 to 4, andM is 2 or 3,The phosphorus compound being present in about 0.5 to 6 times the molar amount of the nitrogen compound.Advantageously the phosphorus compound is a tetrakis-(hydroxy-methyl)phosphonium salt or a tris(hydroxymethyl) phosphine and is present in about 1 to 3 times the nitrogen compound which is preferably ammonia.

Abstract: A water soluble product suitable for rendering textile materials fire retardant is produced by condensing a poly (.alpha.-hydroxyalkyl)phosphorus compound of the formula(RCHOH).sub.n (RCHR').sub.4.sub.-n P-Yor(RCHOH).sub.m (RCHR').sub.3.sub.-m Pand a nitrogen compound of the formula RNH.sub.2, HO--R"NH.sub.2 or ##EQU1## wherein R is hydrogen or alkyl of 1 to 3 carbon atoms,R' is OR or ##EQU2## R" is alkylene of 1 to 3 carbon atoms, Y is at least one anion selected from the group consisting of chloride, sulfate, phosphate, acetate and formate,n is an integer from 2 to 4, andm is an integer from 2 to 3,The phosphorus compound being present in about 0.5 to 6 times the molar amount of the nitrogen compound.Advantageously the phosphorus compound is a tetrakis(hydroxy-methyl)phosphonium salt or a tris(hydroxymethyl) phosphine and is present in about 1 to 3 times the nitrogen compound which is preferably ammonia.