28 августа, 2015 
Malyar The main rule to follow in 2 component isocyanate systems is to avoid solvents which contain active hydrogen. For instance, alcohols can react with the isocyanate reducing the crosslink density. In severe cases, this can lead to a decrease in resistance and adhesion characteristics resulting in unacceptable coatings. The water content of solvents has to be closely controlled, again to avoid reaction with the isocyanate component. Where applicable, “urethane” grade solvents should be used, as these are designed to remove contaminants, such as water and alcohols, which could prematurely react with the isocyanate prior to application.
Esters and ketones are pure solvents for the polyurethane system. These are used in conjunction with diluents, such as the aromatic hydrocarbons, to control application, flow, dry time, solvent/аіг release and cost of the final system.
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