Abstract
Twenty-five organoboron compounds were evaluated for their ability to impart flame retardancy properties to a cotton twill fabric. Only those organoboron compounds in which the carbon-to-boron atom ratio was 4 or less imparted flame retardancy at an approximate 20% add-on level; if a halogen atom was also present in the molecule this ratio could be higher than 4. Washfast finishes with six different compounds were developed by either γ-radiation grafting of a vinyl organoboron compound or by chemical curing with hexamethylenediisocyanate, trimethylolmelamine or urea-formaldehyde.
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