Polyols are sugar alcohols largely known as hydrogenated carbohydrates. They are also known as sugar replacers, bulk sweeteners or sugar free sweeteners.
Chemically, polyols are considered polyhydric alcohols or sugar alcohol's because part of their structure resembles sugar and part similar to alcohol. However these sugar-free sweeteners are neither sugars nor alcohols but are actually derived from carbohydrates. Some polyols are found naturally in various fruits and vegetables.
In today's world, polyols are used in a wide range of applications - such as food, Automotive, Pharmaceutical and personal care sectors.
In food they are very versatile ingredient. They can be used to sweeten products and to fulfill technological functions, including treating as bulking agents, emulsifiers, stabilizers, humecants, thickeners, texturisers, glazing agents or anti-caking agents.
Polyols are also plays important role in pharmaceutical sector. As polyols are known as active ingredients, some of them can be used to help in reducing brain swelling and addresses acute kidney failure due to their ability to act as osmotic diuretics, by that means helping to remove excess water from the body. Polyols are used in a wide variety of pharmaceuticals formulations, such as tablets, sweet taste, tooth friendliness, and ability to manufacture in any particle size make them popular choice for pharmaceutical industry.
Similarly they are also used in various personal care industry products such as toothpaste, mouthwash, make-up, perfumes, lotions and deodorants. As polyols provide advantages like humectancy and viscosity, without causing skin irritation, or any damage to human body.
In today's world, polyols are used in a wide range of applications - such as food, Automotive, Pharmaceutical and personal care sectors.
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Polyols are also plays important role in pharmaceutical sector. As polyols are known as active ingredients, some of them can be used to help in reducing brain swelling and addresses acute kidney failure due to their ability to act as osmotic diuretics, by that means helping to remove excess water from the body. Polyols are used in a wide variety of pharmaceuticals formulations, such as tablets, sweet taste, tooth friendliness, and ability to manufacture in any particle size make them popular choice for pharmaceutical industry.
Similarly they are also used in various personal care industry products such as toothpaste, mouthwash, make-up, perfumes, lotions and deodorants. As polyols provide advantages like humectancy and viscosity, without causing skin irritation, or any damage to human body.
Polyols are classified depending on the molecular weight,
functionality, range, and hydroxyl values. Hydroxyl values are related to
molecular weight and functionality. As polyols contains multiple Hydroxyl group
they further be classified as Polyether polyols and polyester polyols.
Polyether Polyols are manufactured by ethoxylation or propoxylation of a polyhydric alcohol in the presence of a catalyst. The polyhydric alcohols used are ethylene glycol, Di-propylene glycol, Di-ethylene glycol and glycerol. carbohydrates such as Sorbitol, Mannitol, triethanolamine. Sucrose is also used as polyhydric alcohol in the preparation of polyether polyols for making polyurethane foam.
Polyester Polyols used in the manufacture of polyurethane are required to be hydroxyl terminated. Polyester polyol is prepared by reacting an excess of the stoichometric amount of difunctional glycol with dibasic acid. The manufacturing is usually carried out through a batch process.
Health and Safety Factors
Polyols used in manufacture of polyurethane have a very low toxicity. Polyols are not irritating to eyes and skins. Although Polyols have low toxicity, the raw material from which they are manufactured e.g. ethylene oxide, propylene oxide are highly toxic. Ethylene oxide is toxic both in gaseous as well as in liquid form.
Market Overview
The Market of Polyols is controlled by speedily growing Polyurethane Market all over the world. For the last 10 years polyurethane polymers have been one of the fastest growing segments of the plastic industry. As per the market research analysis Asia- Pacific and Europe are largest manufacturer and consumer of polyols. Where Asia Pacific is the fastest growing region for polyols market and markets like North America, western Europe and Japan are steadily growing polyols markets. But as we see in terms of production and consumptions Asia Pacific is largest market for polyols across the globe.
As per MarketsandMarkets research report, the global polyols market was estimated at $14,400.8 million in 2011 and is expected to be worth $ 22,402.1 million by 2017, growing at a CAGR of 7.5 % from 2012 to 2017.
As per MarketsandMarkets research report, the global polyols market was estimated at $14,400.8 million in 2011 and is expected to be worth $ 22,402.1 million by 2017, growing at a CAGR of 7.5 % from 2012 to 2017.
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