Polyester polyols tuaj yeem yaj tau siv cov kuab tshuaj xws li dichloromethane, dimethylformamide (DMF), 1,1-dichloro-1-fluoroethane, muaj cawv, chlorinated paraffin, thiab ethyl acetate.
Dichloromethane:
Ib qho nquag siv cov kuab tshuaj organic nrog cov khoom zoo heev; Nws yog zoo miscible nrog polyester polyols.
Dimethylformamide (DMF):
Polar solvent uas zoo dissolves polyester polyols; nws feem ntau xaiv los ua ib qho hnyav hauv cov tshuaj synthesis.
1,1-Dichloro-1-fluoroethane:
Halogenated hydrocarbon hnyav muab solubility zoo thiab ruaj khov; nws yog tsim rau dissolving polyester polyols.
Industrial cawv:
Uas feem ntau ntawm ethanol, nws muaj qee lub peev xwm los yaj cov polyester polyols, txawm tias nws cov txiaj ntsig yuav qis dua lwm cov kuab tshuaj tshwj xeeb.
Chlorinated paraffin:
Kev sib xyaw ntawm chlorinated hydrocarbons nrog zoo solubility thiab lubricating zog; nws tuaj yeem siv rau kev sib cais thiab kev ua haujlwm ntawm polyester polyols.
Ethyl acetate:
Ib qho ester hnyav uas muaj cov tshuaj toxicity tsawg thiab zoo volatility; nws yog tsim rau cov txheej txheem xws li kev sib cais thiab txheej ntawm polyester polyols.
