Aliphatic polyethers
Name of the polymers with low to medium molar mass Name of the polymers with high molar mass Preparation Repeating unit Examples of trade names
Paraformaldehyde
Polyoxymethylene (POM) or polyacetal or polyformaldehyde Step-growth polymerisation offormaldehyde
-CH2O- Delrin from DuPont
Polyethylene glycol (PEG)
Polyethylene oxide (PEO) or polyoxyethylene (POE) Ring-opening polymerization of ethylene oxide
-CH2CH2O- Carbowax from Dow
Polypropylene glycol (PPG)
Polypropylene oxide (PPO) or polyoxypropylene) (POP) Anionic ring-opening polymerization ofpropylene oxide
-CH2CH(CH3)O-
Polytetramethylene glycol (PTMG) or Polytetramethylene ether glycol (PTMEG) Polytetrahydrofuran (PTHF) Acid-catalyzed ring-opening polymerization of tetrahydrofuran
-CH
2CH
2CH
2CH
2O- Terathane from Invista and PolyTHF from BASF