Ventruce Coscat® 8330R Organobismuth/Zinc Catalyst

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Product Introduction
Coscat 8330R catalyst is a proprietary organometallic compound specifically developed to replace benchmark performance 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 the sole or co-catalyst. Specific advantages of Coscat 8330R include high selectivity for polyol-isocyanate reactions, avoidance of bubble generation at low levels of bubbles; excellent synergy with organomercury catalysts and urethanes currently catalyzed with other organometallic or amines Improved moisture aging performance in the system.

Physical properties

Application
①Slow to medium catalyst for polyurethane coatings, elastomers and castables;
②No foaming under low moisture conditions;
③Polyurethane intermediates, polymers;
④Chemical intermediate

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