2] is linear or branched alkyl, cycloalkyl, aryl, allyl, or aralkyl
, and wherein each [R.
The commercial grades of novolac resins such as phenolic novolac (PN, KPE-F2000), bisphenol-A novolac (BN, KBH-F2121), and phenolic aralkyl
novolac, so-called Xylok (XK, KPH-F3065) from Kolon Chemical Company, were used as hardeners for CNE.
This novel product contains a naturally occurring monohydric aralkyl
alcohol, which prevents lice from closing their spiracles, thereby asphyxiating the lice within ten minutes.