A Flame-Retardant Finish Based upon Tris(hydroxymethyl)phosphine

Abstract

A new flame-retardant finish utilizing tris(hydroxymethyl)phosphine (THP), trimethylolmelamine (TMM), one and a half methylolurea (11/2 MU), and a mixed catalyst (MgCl 2 .6H 2 O-citric acid) has been developed. The process consisted of padding cotton fabrics through an aqueous solution containing 14.3% THP, 13.35% 11/2 MU, 4.45% TMM, 1% mixed catalyst, and 1% wetting agent. Sateen padded with 28% solids level solutions (exclusive of wetting agent and catalyst) and printcloth padded with 32% solids level solutions passed the vertical flame test after 50 launderings. Treated fabrics had good hand and appearance.Losses in breaking strength were approximately 10% and tearing strength losses were of the same order of magnitude for wash-wear fabric.

THP-Amide Flame-Retardant Finish: Rot and Weather Resistance

“…Recently, we have developed a new flame retardant for cotton textiles based on tris(hydroxymethyl)phosphine (THP) and referred to as the THP-amide finish [5]. The preferred formulation for 8 oz/yd2 cotton sateen is 14.2% THP, 13.3% 11 methylolurea (MU), 4.5°~o trimethvlolmelamine (TMM), 1°~o mixed catalyst (MgCl2 ~ citric acid), and 1% wetting agent (total solids 32%).…”

“…This THP-amide finish is applied by a pad, dry, and cure procedure and utilizes less TMM than previous THPC or THPOH amide finishes. TMM in finished fabrics increases the rot resistance of the treated fabrics, but at the same time increases the stiffness or harshness of hand of fabrics when applied by a heat cure [5]. Fabrics treated with the THPamide finish have a very good hand, but the effect of the lower level of TMM on rot and weather resistant properties has not been assessed.…”

Unprecedented Selective Aminolysis: Aminopropyl Phosphine as a Building Block for a New Family of Air Stable Mono-, Bis-, and Tris-Primary Phosphines

“…9,10 The ease of transformation of P-H bonds into P-C bonds is, undoubtedly, a synthetic novelty and the hydroxymethylated-phosphorus compounds have provided a diverse range of chemical, catalytic, environmental, biological, and biomedical applications. [11][12][13][14][15][16][17][18] A serious impediment to using primary and secondary phosphines as general-purpose reagents to develop new chemistry is associated with their unpleasant pyrophoric nature and extreme hydrolytic, thermal, and oxidative instabilities. In particular, primary phosphines with "user friendly" properties (e.g.…”

“…Primary and secondary phosphines (RPH 2 and R 2 PH) constitute an important class of organophosphorus compounds. − Their facile participation in a number of chemical reactions that include nucleophilic addition reactions with unsaturated species, substitution reactions with acid halides, reactions with alkali metals, and a host of reactions at the P III center have resulted in the development of a large number of new chemical products of commercial significance. − Primary phosphines, in particular, have proven to be versatile starting materials for the development of hydroxyalkyl phosphines (R x (CH 2 OH) y P) via formylation of P−H bonds with aldehydes. , The ease of transformation of P−H bonds into P−C bonds is, undoubtedly, a synthetic novelty and the hydroxymethylated-phosphorus compounds have provided a diverse range of chemical, catalytic, environmental, biological, and biomedical applications. − …”