Product introduction
Coscat 8330R catalyst is a proprietary organometallic compound specifically developed to replace the benchmark performance of mercury-based catalysts in two-component polyurethane systems.
Coscat 8330R catalyst is recommended for use in polyurethane elastomer systems that typically require lead, mercury or tin catalysts as sole or co-catalysts. Particular advantages of Coscat 8330R include high selectivity for the polyol-isocyanate reaction, avoiding bubble generation at low levels of bubbles; excellent synergy with organomercury catalysts and carbamates currently catalyzed with other organometallic or amines Improved moisture aging performance in the system.
  

physical properties

application
①Slow to medium speed catalysts for polyurethane coatings, elastomers and castables;
②No foaming in the case of low moisture;
③Polyurethane intermediates, polymers;
④Chemical intermediates

The graph below shows gel time images tested in polyurethane grade castor oil (DB® Oil, Vertellus Specialty Materials) and 1000 MW polyether diol cross-linked with polymeric MDI. Gel times were also evaluated in a 1500 MW polyether triol crosslinked with HDI-trimer; all samples had an isocyanate index of 1.05:1.0 (NCO:OH) with Coscat 8330R added at 0.1% of the total sample weight.