Diisocyanate + polyol step-growth. Segmented block copolymers: hard (urethane) + soft (polyether/polyester). Foams, elastomers, coatings. CO2 from water-isocyanate reaction leavens foams.
Diisocyanate + polyol step-growth. Segmented block copolymers: hard (urethane) + soft (polyether/polyester). Foams, elastomers, coatings. CO2 from water-isocyanate reaction leavens foams.