reacting the oligomeric and the thiadiazole succinic anhydride with {TAIL ~ pentamethylene diamine} to produce {HEAD ~ the product} of pentamethylene bis succinimide; and 
reacting the oligomeric and the thiadiazole succinic anhydride with { TAIL ~ pentamethylene diamine } to produce { HEAD ~ the product } of pentamethylene bis succinimide ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH