BINDER FOR COATING SECONDARY BATTERY SEPARATOR COMPRISING AN ORGANIC COMPOUND CONTAINING 2-CYANOETHYL GROUP OF HIGH TEMPERATURE STABILITY

摘要

The present invention relates to a binder for coating a secondary battery separator having high temperature thermal stability, wherein the binder is reacted by adding a hydroxyl group-containing organic compound and acetone to an aqueous solution containing LiOH hydrate, and then adding acrylonitrile to react 2- To obtain a crude product of a cyanoethyl group-containing organic compound, followed by neutralization and purification, a 2-cyanoethyl group-containing polymer prepared, and the weight change according to the temperature change of the prepared cyanoethyl group-containing polymer was measured. When used, it is characterized in that the residual weight is 97 wt% or more in the temperature range of room temperature to 200 ℃ According to the present method, an organic compound containing a 2-cyanoethyl group having a cyanoethylation substitution rate of 75% or more and exhibiting thermal stability can be provided.