Resol - ester alkaline phenolics methyl formate hardened

2 Resol - ester (alkaline phenolics methyl formate hardened) 

The resin is an alkaline phenolic lesol, which reacts with methyl formate to produce methanol and an alkaline formate. The phenolic resin is precipitated as a gel that binds all compounds together. Further cross-linking leads to even higher strength on storage. 

Methyl formate is liquid at ambient temperature, the boiling point being 32 C, but it is gasified by air typically heated up to 80 C which also acts as the carrier in the process. The gassing period is always followed by an air purge, the purpose of which is to evenly distribute the methyl formate throughout the mass of sand. 

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ALKALINE PHENOLIC Resol - Alkaline phenol-formaldehyde resin 1. Gas hardened (alkaline phenohc cold- box) 2. Self-setting (alkaline phenohc no bake) Gas hardened with methyl formate vapour - low Cold-set with esters - low Formaldehyde Phenol Methyl formate Formaldehyde Phenol Esters ... 

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