Tricyclodecane dimethanol composition and preparation method of the same

A method of preparing a tricyclodecane dimethanol composition comprising tricyclodecane dimethanol, and

• an ether compound represented by Formula 1 in an amount of 1% by weight or less,
• the method comprising the following steps of ii), iii), iv), and vi), and further comprising one or more of the following steps of i) and v):
• i) purifying dicyclopentadiene by performing a retro Diels-Alder reaction and a Diels-Alder reaction of dicyclopentadiene;
• ii) performing a hydroformylation reaction by introducing a catalyst composition including a rhodium-containing catalyst compound and an organophosphorus compound into a reactor, and by adding dropwise dicyclopentadiene under a mixed gas of hydrogen and carbon monoxide;
• iii) performing a hydrogenation reaction of the reaction mixture obtained after the step ii) in the presence of a hydrogenation catalyst;
• iv) removing the hydrogenation catalyst and the solvent from the reaction mixture obtained after the step iii);
• v) performing thin film evaporation of the reaction mixture obtained after the step iv);
• and
• vi) performing vacuum fractional distillation of the reaction mixture obtained after the step iv) or the step v),
• wherein Formula 1 is represented by:
• R1—CH2—O—CH2—R2,
• and wherein, in Formula 1, R1 and R2 are each independently selected from the group consisting of: