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Aromatic isocyanates are faster and cheaper. Aliphatic isocyanates keep their colour. This guide sets out which property actually decides the choice.

Both are aliphatic HDI derivatives and both give light stable coatings. Their crosslink density, viscosity and flexibility are not the same.

EEW, colour, viscosity and softening point are the four numbers that decide whether a resin grade fits your process.

Latency is the whole point. This guide explains what melting point and activation temperature tell you about shelf life and cure schedule.

Amine hydrogen equivalent weight and molecular weight explain almost everything about how a polyetheramine will behave in your system.

Molecular weight sets flexibility, hydroxyl value sets stoichiometry, and acid value quietly sets service life.