In polyurethane elastomers and formulations such as adhesives, coatings, sealants, waterproof coatings, paving materials, etc., organometallic catalysts such as dibutyltin dilaurate (DY-12) are most commonly used to promote isocyanate groups and hydroxyl groups. It is very effective, but it also has a certain acceleration effect on the reaction of water and isocyanate in the formulation with moisture. It is suspected that special catalysts such as organic lead can be used in the formulation of plastic track.
The organometallic compound includes a carboxylate, a metal alkyl compound, etc., and the metal element contained therein mainly includes tin, potassium, lead, mercury, zinc, etc., and the most commonly used is an organotin compound.
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