1 Scope
This document specifies a method for the measurement of trace amounts of basic materials
present in polyether polyols used in the production of polyurethanes . It is important to know the trace amount of basicity in a polyol to prevent gelation
of the reaction mass during the production of polyurethane prepolymers. It is also useful to control the basicity in polyols used for polyurethane production to assure consistent and reproducible reaction behaviour. This method
is suitable for quality control, as a specification test and for research.
The applicable range is 0 μg to 50 μg/g, expressed as KOH. The method is not applicable
to amine-based polyols. The values can be reported as CPR (controlled polymerization
rate) units.