Polyurethane -

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

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 Polyurethane

Long, flexible polyol chains that provide elasticity and low-temperature flexibility. Rigid foams serve as high-performance thermal insulation for

Biocompatible polyurethanes are used in catheters, surgical drapes, and short-term implants. A comprehensive review of polyurethane - ScienceDirect.com such as or organometallic compounds (e.g.