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Invention Grant
CN109071787B 聚(酯-碳酸酯)共聚物、由其形成的制品、和制备方法 有权 转让

聚(酯-碳酸酯)共聚物、由其形成的制品、和制备方法
Abstract:
聚(酯‑碳酸酯)共聚物包含式(I)的碳酸酯单元；和式(II)的酯单元，其中：T为C2‑20亚烷基，C6‑20亚环烷基、或C6‑20亚芳基；以及R1和J各自独立地为(a)双酚A二价基团和(b)C16或更高级二价基团(b)，其中所述C16或更高级二价基团按照40mol％～50mol％的量存在；所述酯单元按照40mol％～60mol％的量存在；所述聚(酯‑碳酸酯)共聚物具有18,000～24,000道尔顿的重均分子量；并且所述组合物的样品具有根据ASTM D3418以20℃/min的加热速率通过差示扫描量热法(DSC)测定的210～235℃的玻璃化转变温度；和根据ISO11443测定的在644s‑1和350℃下小于1050Pa‑s的熔体粘度。
Abstract(English):

A poly(ester-carbonate) copolymer comprises carbonate units of the formula (I); and ester units of the formula (II) wherein: T is a C2-20 alkylene, a C6-20 cycloalkylene, or a C6-20 arylene; and R1 and J are each independently (a) a bisphenol A divalent group and (b) a C16 or higher divalent group (b), wherein the C16 or higher divalent group is present in an amount of 40 to 50 mol%; the ester units are present in an amount of 40 to 60 mol%; the poly(ester-carbonate) copolymer has a weight average molecular weight of 18,000 to 24,000 Daltons; and a sample of the composition has a glass transition temperature of 210 °C to 235 °C as determined by differential scanning calorimetry (DSC) as per ASTM D3418 with a 20 °C/min heating rate; and a melt viscosity of less than 1050 Pa- s at 644 sec-1 and 350°C, determined according to ISO 11443.

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