Patent ID: 9624165
Date: 2017-04-18
CPC Classifications: C07C

Claim:
1. A method for suppressing the production of impurities in xylylene dicarbamate comprising: the xylylene dicarbamate containing impurities represented by formulas (1) to (4) below at a ratio of less than 100 ppm as a total amount thereof on a mass basis under heating at 50 to 180° C. by setting a total oxygen amount relative to the xylylene dicarbamate to be less than 100 ppm, the total oxygen amount being a sum of an amount of oxygen contained in a space portion when the xylylene dicarbamate fills a vessel and an amount of oxygen dissolved in the xylylene dicarbamate, wherein in the above-described formulas (1) to (4), R represents a monovalent hydrocarbon group and wherein the space portion is filled with inert gas