Ma polyols awa amakhala makamaka onunkhira a polyester polyols okonzedwa ndi polycondensation kapena kusinthidwa kwa phthalic anhydride, diethylene glycol ndi zida zina.Amagwiritsidwa ntchito makamaka m'munda wa thovu lolimba ndi zomatira.Iwo ali ndi ubwino wa fungo otsika, mtundu otsika, mkulu anachita ntchito, kwambiri hydrolysis bata, okhutira mkulu onunkhira, kukhazikika bwino ndi fluidity wa zipangizo gulu, Ndipo kapangidwe mankhwala akhoza kusinthidwa malinga ndi zofuna za makasitomala.

Mndandanda wa polyester polyols ukhoza kugwiritsidwa ntchito kwambiri mufiriji, kusungirako kuzizira, kupopera mbewu mankhwalawa, mphamvu ya dzuwa, mapaipi otentha, kutchinjiriza nyumba ndi madera ena opangidwa ndi thovu lolimba, zinthu zina zomatira.