Synthesis and Properties of Water Dispersion Polyurethane Containing Fluorine

Environmentally friendly water dispersion polyurethanes containing fluorine were prepared with a fluorinated polyol having of fluorine . In order to control the fluorine contents of the synthesized polyurethanes polytetramethylene glycol (PTMG2000) and were mixed at assigned ratios and reacted with isophorone diisocyanate (IPDI) as a diisocyanate used. Introducing hydrophilic anion to the polymer chain was achieved by applying dimethyl propionic acid (DMPA). The ionic groups were neutralized with triethyl amine (TEA) before dispersion into water. Chain extension was executed by adding ethylene diamine at the final stage. Mechanical properties of the polymers showed that modulus increased with increasing content. Surface energy values obtained from contact angle measurement decreased with increasing content up to . We expect that the synthesized polyurethanes present reliable effect from the fluorine atoms incorporated even at a small amount of .