The invention relates to a furandicarboxylic acid
copolyester and a preparation method thereof. The
structural formula of the furandicarboxylic acid
copolyester is shown in the following formula (1): wherein, x, y and z are all integers
ranging from 10 to 90. Its preparation method includes the following steps: (1) mixing
dibasic acid or its esterified product, dibasic
alcohol and
esterification reaction catalyst, and performing
esterification reaction under an
inert atmosphere to obtain the first
intermediate product; wherein, the
dibasic acid includes Furandicarboxylic acid, diols including
ethylene glycol, 1,4-
cyclohexanedimethanol and 2,2,4,4-tetramethyl-1,3-cyclobutanedimethanol; (2) under vacuum Under the condition of vacuum, the first
intermediate product is subjected to precondensation reaction to obtain the second
intermediate product; (3) under vacuum condition, the second intermediate product is subjected to
polycondensation reaction to obtain furandicarboxylic acid
copolyester. The preparation method of the present invention is simple, and the obtained furyl
dicarboxylic acid copolyester has excellent
heat resistance, transparency and mechanical properties at the same time, and can be used to manufacture baby feeding bottles, children's toys, water cups, kitchen supplies, electronic appliances and the like.