Chembond Catalyst 210

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Chem Bond Catalysts are used in the ratio of 10% by weight of the Chem Bond 4905 resin in the sand mix. Variation of the catalyst percentage in relation to the binder will not increase the cure rate of the mixed sand. In other words, 20% of the Chem Bond Catalyst by weight of binder will cure at the same rate as 10%. Reduction of catalyst level below 8% binder will result in lack of throughcure and subsequent collapse of cores and molds.