KNOW WHAT … .

Polyurethane chemistry was first studied by the German chemist, Friedrich Bayer in 1937. Polyurethanes, also known as polycarbamates, belong to a larger class of compounds called polymers. Polymers are macromolecules made up of smaller, repeating units known as monomers. Generally, they consist of a primary long-chain backbone molecule with attached side groups. Polyurethanes are characterized by carbamate groups (-NHCO 2) in their molecular backbone. These groups, called urethane, are produced through a chemical reaction between a diisocyanate and a polyol.

Polyurethanes are some of the most versatile polymers. They are used in elastomers, surface coatings, adhesives, foams, sealants etc.

Types of polyurethanes

MANUFACTURING PROCESS OF PU ELASTOMERS

1. One Shot Method



2. Pre-polymer method and quasi pre-polymer method.