| 摘要 |
PROBLEM TO BE SOLVED: To provide baby bottles that ameliorate unfavorable consumer perception because of the presence of bisphenol A, insufficient chemical resistance, insufficient hydrolytic stability, etc.SOLUTION: A polyester material has a glass transition temperature ranging from 100°C to 130°C and an inherent viscosity of 0.55 to 0.80 dL/g, and comprises terephthalic acid residues, 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 1,4-cyclohexanedimethanol residues. A baby bottle is produced from the polyester material by injection blow molding from a preform under conditions of a stretch ratio of 1.2 to 2.0. The baby bottle has a transmission ratio greater than 0.80. The baby bottle has a shrinkage factor of 5% or less after immersion in boiling water for one hour.SELECTED DRAWING: None |
