公开(公告)号：US06713595B2

公开(公告)日：2004-03-30

申请号：US09732765

申请日：2000-12-11

申请人： Hyun Soo Chung ,  Jae Wang Lee ,  Dong Hoon Kim ,  Do Youn Kim ,  Suok Woo Lee

发明人： Hyun Soo Chung ,  Jae Wang Lee ,  Dong Hoon Kim ,  Do Youn Kim ,  Suok Woo Lee

IPC分类号： C08G6378

CPC分类号： C08G63/18 ,  C08G63/78 ,  C08G63/83 ,  C08G63/85 ,  C08G63/866

摘要： The present invention provides a copolyester resin composition which has good physical properties, biodegradability and processability and a process for preparing and/or producing the same. To improve the biodegradability and physical properties of the copolyester, the present invention applied multi-stage reaction step, and copolyester resin having number average molecular weight of from 30,000 to 70,000, weight average molecular weight of from 100,000 to 600,000, melting point of from 55° C. to 120° C., and melt index of from 0.1 to 30 g/10 minute (190° C., 2,160 g) is obtained. The processability and physical properties of the copolyester resin of the present invention has been greatly enhanced by incorporating (i) an “aromatic-aliphatic prepolymers” having number average molecular weight of from 300 to 30,000 and the contiguous repeating unit of aromatic group in the dicarboxylic acid position of “aromatic-aliphatic prepolymers” is less than 5. Thus it can be processed by using the conventional processing equipment for polyethylene and polypropylene without any modification.

摘要翻译： 本发明提供具有良好的物理性能，生物降解性和加工性的共聚酯树脂组合物及其制备和/或制备方法。 为了提高共聚酯的生物降解性和物理性能，本发明应用多阶段反应步骤，数均分子量为30,000〜70,000的共聚酯树脂，重均分子量为100,000〜600,000，熔点为55℃ ℃至120℃，熔体指数为0.1〜30g / 10分钟（190℃，2,160g）。 本发明的共聚酯树脂的加工性和物理性能通过（i）数均分子量为300〜30,000的芳族 - 脂肪族预聚物和芳族基团的连续重复单元在二羧酸中 “芳族 - 脂肪族预聚物”的酸性位置小于5.因此，可以使用常规的聚乙烯和聚丙烯加工设备进行处理，而无需任何改性。

公开(公告)号：US06399716B2

公开(公告)日：2002-06-04

申请号：US09734669

申请日：2000-12-13

申请人： Hyun Soo Chung ,  Jae Wang Lee ,  Dong Hoon Kim ,  Do Youn Kim ,  Suok Woo Lee

发明人： Hyun Soo Chung ,  Jae Wang Lee ,  Dong Hoon Kim ,  Do Youn Kim ,  Suok Woo Lee

IPC分类号： C08F2000

CPC分类号： C08G63/78 ,  C08G63/16

摘要： An aromatic group containing copolyester resin composition which has good biodegradability and physical properties, wherein; (i) 0.1 wt % to 30 wt % of an aliphatic prepolymers having number average molecular weight of from 300 to 30,000; (ii) one or a plurality of aromatic dicarboxylic acid (or an acid anhydride thereof which containing aromatic group in the molecule; (iii) one or a plurality of aliphatic (including cyclic type) dicarboxylic acid (or an acid anhydride thereof); and (iv) one or a plurality of aliphatic (including cyclic type) glycol, wherein the copolyester resin has number average molecular weight of from 30,000 to 90,000, weight average molecular weight of from 100,000 to 600,000, melting point of from 70° C. to 150° C., and melt index of from 0.1 to 50 g/10min. (190° C., 2,160 g), and the process for preparing and/or producing the same. The composition and preparation method provides a high molecular weight copolyester resin which has good biodegradability and physical properties required for packaging film, trash bags and agricultural film.

摘要翻译： 含有芳族基团的共聚酯树脂组合物具有良好的生物降解性和物理性能，其中： （i）0.1重量％〜30重量％的数均分子量为300〜30000的脂肪族预聚物; （ii）分子中含有芳香族基团的一种或多种芳族二羧酸（或其酸酐）;（iii）一种或多种脂肪族（包括环状）二羧酸（或其酸酐）;和 （iv）一种或多种脂肪族（包括环状）二醇，其中所述共聚酯树脂的数均分子量为30,000〜90,000，重均分子量为100,000〜600,000，熔点为70℃〜 150℃，熔体指数为0.1〜50g / 10min（190℃，2,160g），以及其制备和/或制造方法，组合物和制备方法提供高分子量共聚酯 树脂，其具有包装膜，垃圾袋和农业膜所需的良好的生物降解性和物理性能。