5. Formulating different types of polyurethane

5.1 Formulation

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5.1.1 Components

For ease of use, all the basic components required to produce a formulation are combined into two main components (except in very rare cases, such as formulations for continuous block production, laboratory research, etc.).

The usual name for the formulated polyol is "Component A", and for the isocyanate, whether multi-component or not, is "Component B". However, this rule is reversed in the USA and Italy, where "Component A" designates the isocyanate (possibly...