What is a Polyol?
In organic chemistry, a polyol is an organic compound containing multiple hydroxyl groups. The term “polyol” can have slightly different meanings depending on whether it is used in food science or polymer chemistry. Polyols containing two, three and four hydroxyl groups are diols, triols, and tetrols, respectively.
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How many types of polyol are there?
Polyols may be classified according to their chemistry. Some of these chemistries are polyether, polyester, polycarbonate and also acrylic polyols.
Polyether polyols may be further subdivided and classified as polyethylene oxide or polyethylene glycol (PEG), polypropylene glycol (PPG) and Polytetrahydrofuran or PTMEG.
What are the raw materials for polyols?
The raw materials used are polycarbonate polyols, polycaprolactone polyols, polybutadiene polyols,1 and polysulfide polyols. The material natural oil polyol derived from castor oil and other vegetable oils is used to make elastomers, flexible bun stock, and flexible molded foam.
What is an example of a polyol?
Examples of polyols
Examples of sugar alcohols (a class of polyols) are as follows: sorbitol, maltitol, xylitol, erythritol, isomalt, glycerol, lactitol, mannitol, and hydrogenated starch hydrolysates. Sorbitol, for instance, is one of the most common type of polyol.
Is polyol flammable?
Polyols are generally combustible. Their generally low volatility means that they are poorly flammable. Flammable and/or toxic gases are generated by the combination of these materials with alkali metals, nitrides, and strong reducing agents.