Polyurethane

Formed by the reaction of isocyanates and chain extenders (small diols/diamines), providing mechanical strength, rigidity, and high-temperature performance.

Rigid foams serve as high-performance thermal insulation for roofs and walls, significantly reducing energy consumption.

Used in seating for comfort, bumpers for impact resistance, and coatings for corrosion protection and aesthetics. Polyurethane

Polyurethanes dominate several major sectors because they can be formulated as :

The "tailor-made" nature of PU stems from its : Formed by the reaction of isocyanates and chain

Biocompatible polyurethanes are used in catheters, surgical drapes, and short-term implants. A comprehensive review of polyurethane - ScienceDirect.com

Polyurethanes are typically produced via a between two primary components: 2. Structure-Property Relationships

This reaction is often facilitated by catalysts, such as or organometallic compounds (e.g., dibutyltin dilaurate). To create a solid foam, a "blowing agent" is added; commonly, water reacts with isocyanate to produce CO2CO sub 2 gas, which expands the polymer into a cellular structure. 2. Structure-Property Relationships