Supplier Page from Thermo Fisher Scientific for Polyethyleneimine, M.W. 60,000, 50% w/w aq. soln
3-Ethoxy-2-cyclohexen-1-one, 99% from Thermo Fisher Scientific
4-Ethylphenol, 97% from Thermo Fisher Scientific
Epichlorohydrin, 99% from Thermo Fisher Scientific
Ethylene carbonate, 99+% from Thermo Fisher Scientific