Patent ID: 7989523

Claim:
An alicyclic diepoxy compound comprising a 3,4,3′,4′-diepoxybicyclohexyl compound represented by following Formula (1): wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , and R 18 are the same as or different from one another and each represent a hydrogen atom, a halogen atom, a hydrocarbon group which may have an oxygen atom or a halogen atom, or a substituted or unsubstituted alkoxy group, wherein said alicyclic diepoxy compound contains an isomer of said 3,4,3′,4′-diepoxybicyclohexyl compound as an impurity, and wherein a content of said isomer is less than 20% in terms of peak area ratio based on the total peak areas of the 3,4,3′,4′-diepoxybicyclohexyl compound and the isomer, the peak areas being determined by gas chromatography.