69248-03-9Relevant academic research and scientific papers
CONDENSATION OF TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM SULFATES AND SULFONATES WITH 1,3-DIMETHYLUREA
Frank, Arlen W.
, p. 207 - 212 (2007/10/02)
An unexpected displacement of one of the phosphorus groups occured when the chloride 1a was replaced by the sulfate 1b in its reactions with 1,3-dimethylurea.The products, 2c and 5c, were bisulfates rather than sulfates.In contrast, no displacement occurr
SYNTHESIS AND PROPERTIES OF CONDENSED UREIDOMETHYL PHOSPHONIUM SALTS
Frank, Arlen W.
, p. 147 - 152 (2007/10/02)
Urea, N-methylurea, and 1,3-dimethylurea react with tetrakis(hydroxymethylphosphonium chloride (THPC) in molar ratios lower than 4:1, forming condensed quaternary ureidomethyl phosphonium salts.The urea and N-methylurea products are polymeric gels, whereas the 1,3-dimethylurea products are cyclic crystalline solids.Some of the phosphonium salts are interconvertible through condensation or displacement reactions.Hydrolysis of the phosphonium salts, followed by oxidation, yields tertiary phosphine oxides having similar properties.The products were characterized by IR, NMR, an d electron spectroscopy for chemical analysis (ESCA).
Quaternary ureidomethyl phosphonium salts
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, (2008/06/13)
Novel quaternary ureidomethyl phosphonium salts having the general formula STR1 are prepared by condensing a urea having the formula RNHC(O)NR'R" with a quaternary hydroxymethyl phosphonium salt having the formula (HOCH2)4 P+ X- in a molar ratio of at least 2:1. The products, which are characterized by the absence of residual hydroxymethyl groups, are useful as finishing agents for imparting flame retardant properties to cotton fabrics.
