Polyalkylene oxide polyether polyols

Propylene oxide Ethylene oxide Butylene oxide (PO) (EO) (BO) 

The general polymerisation reaction of an alkylene oxide initiated by one hydroxyl group is  

The general polymerisation of an alkylene oxide, initiated by a polyfunctional starter, is  

The starters used frequently in the synthesis of oligo-polyols for elastic PU and some important characteristics of these starters for PU chemistry are presented in Table 4.1. 

The catalysts used for alkylene oxide polymerisation, initiated by hydroxyl groups, are  

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Polyalkylene oxide polyether polyols are the most important group of polyols for PU, representing around 80% of the total oligo-polyols production. The general formula of a polyalkylene oxide poly ether polyol is presented in Figure 4.3. 

In Sections 4.1, 4.1.1, 4.1.2, 4.1.3 and 4.1.4, the chemistry of polyether polyol synthesis, the mechanism and kinetics of alkylene oxide polyaddition to hydroxyl groups and the most important structures of polyalkylene oxide polyether polyols for elastic polyurethanes - PO homopolymers, random PO-EO copolymers and PO-EO block copolymers - were discussed. 

Polyalkylene oxide polyols (polyether polyols) 1. Polyether polyols... 

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