Development of a fast drying lacquer based on raw lacquer sap

A series of new lacquers, based on the raw lacquer sap that drying fast n the natural environment, has been developed using a repeated-kurome process.Fast drying occurred due to the repeated-kurome process from K-0 to K-4, and the 982cm-1 for the dienes decreased andthe 993cm-1 for the IR measurement.In addition ,the polymerization of urusiol by laccase was revealed for the first tim by the repeated-time course of GPC measurements.The results suggest that the molecular weight og urusiol was gradually increased by the repeated-kurome process,and the emulsion micelle inthe raw lacqued from 10to1um in the kurome lacquer. A lacquer based on raw lacquer that dried fast at room termperature and humidity can be obtained by stirring with additional moisture in the reaction vessel,the kurome process,with a devrease of the urusiol monomer.