Polyurethane is a type of thermoset plastic. That is, they harden after polymerization and do not soften again.
Since its discovery in 1937, they have been used in many fields with their varieties having very different characteristics.
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Polyurethane was first introduced in 1937 by the German scientist Prof.Dr. Dr. It was discovered by Otto Bayer (1902 - 1982).
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Rigid (rigid) polyurethane foams that we use today began to be produced in the 1950s. With the developments in the following years, polyurethane has become an indispensable raw material for many products used in daily life.
From the beginning, you can follow the exploration adventure of polyurethane from the following chart:
http://www.polyurethanes.org/en/what-is-it/timeline
CHEMICAL CONTENT OF POLYURETHANE AND USAGE AREAS
Polyurethanes are two products, mainly obtained from petroleum; polyol and diisocyanate. Depending on the field of use, various additives such as catalysts, surface conditioners, defoamers, blowing agents and flame retardants are added to these chemical products.
In Europe, harmful gases such as CFC have been extracted from the polyurethane raw material since 1995 and HCFC since 2003.
With polyurethane; many products such as rigid and flexible foams, leathers, elastomers, adhesives, coatings, fillers.
Although many people do not know what polyurethane is, polyurethane; building insulation and decoration product in construction, furniture, automobiles, airplanes, refrigerators, shoes, sports equipment, textile and has a wide range of uses in many sectors.
According to Credence Research's report, the global polyurethane foam market reached USD 58.85 billion in 2017 and the market is projected to grow by 5.2% between 2018-2026. The full report can be read at:
https://www.credenceresearch.com/report/polyurethane-foams-market
By 2020, the use of polyurethane around the world is estimated to reach 22 million tons per year.