Patent ID: 7045663

Claim:
A compound of the formula: wherein: each X 1 may be the same or different than the other X 1 and each X 1 is hydrogen, an alkyl, an alkenyl, an alkynyl, an aryl, an aryl substituted with one or more —NO 2 groups, an aryl substituted with one or more lower alkyls, a group of the formula RO—, a group of the formula RCO—, a group of the formula RCOO—, a group of the formula ROCO—, a group of the formula (R) 2 N—, a group of the formula RCON—, a group of the formula RN═N—, a group of the formula RS—, a group of the formula RSO 2 —, a group of the formula RSO—, a group of the formula RSO 2 O—, a group of the formula RSOO—, a halogen atom, ammonio, nitrozo, nitro, mercapto, or sulfo; R is hydrogen, lower alkyl, aryl, or an aryl substituted with one or more lower alkyls; m is 0–30; and n is 0–30.