Epoxides combine with substances containing active hydrogen atoms to form polyether polyols. Polycondensation of multifunctional carboxylic acids and polyhydroxyl compounds produces polyester polyols. They can be further classified based on their intended use.
Polyether Polyols are polyols with an ether chain and two or more hydroxyl groups connected to their terminal groups. Higher molecular weight polyether polyols are utilised to make more stiff goods, with molecular weights ranging from 2,000 to 10,000. They're made by combining epoxides or cyclic ethers in a catalytic addition process. Ethene oxides, butane oxides, and propene oxides are commonly utilised in the production of Polyether Polyols. In addition, initiators such sucrose, water, amines, and glycols are utilised in the process.
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