Inventors:
James C. W. Chien - Amherst MA
Frederick George Schappell - Newark DE
Assignee:
Hercules Incorporated - Wilmington DE
International Classification:
C07C11700
Abstract:
Disclosed are brominated azido fire-retardants having the formula (Br). sub. x --R--[(R'). sub. n --A]. sub. y Where R is an organic radical; R' is selected from ##EQU1## --O(R"-O). sub. b --R"--, ##EQU2## where R" is selected from alkylene, cycloalkylene, alkylene cycloalkylene, arylene, alkylene arylene, and the foregoing radicals with bromo substituents, and b is an integer from 1 to 10; A is selected from ##EQU3## and --SO. sub. 2 N. sub. 3 where z is 0 or 1; x is at least 3; n is 0 or 1; and y is an integer from 1 to 100. Also disclosed is the process of preparing fire-retardant natural and synthetic fibers and films which comprises contacting the surface of said fiber or film with a brominated azido fire-retardant and initiating reaction of the fire-retardant with the fiber or film by heat or irradiation.