发明名称 |
METHOD FOR CONTINUOUS PRODUCTION OF BIODEGRADABLE ALIPHATIC/AROMATIC POLYESTER COPOLYMER |
摘要 |
A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer includes: performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C. or less; continuously performing a second esterification reaction of a reaction product from the first esterification reaction; continuously performing a first polycondensation reaction of a reaction product from the second esterification reaction to obtain a prepolymer; continuously performing a second polycondensation reaction of the prepolymer to obtain a second polycondensation reaction product having an intrinsic viscosity from about 0.9 dl/g to about 1.0 dl/g; and continuously performing a third polycondensation reaction of the second polycondensation reaction product to prepare the biodegradable aliphatic/aromatic polyester copolymer, wherein the performing of the first esterification reaction or the continuously performing of the second esterification reaction includes adding an aromatic carboxylic acid. The biodegradable aliphatic/aromatic polyester copolymer prepared by control of the intrinsic viscosity of the second polycondensation reaction product may be improved in processibility, film formability, tensile/tearing strength, and blending ability with another polymer resin. Use of a less amount of the aliphatic dihydroxy compound as a starting material may reduce manufacturing costs. |
申请公布号 |
US2015307657(A1) |
申请公布日期 |
2015.10.29 |
申请号 |
US201314651800 |
申请日期 |
2013.07.18 |
申请人 |
SAMSUNG FINE CHEMICALS., LTD. ;S-ENPOL CO., LTD. |
发明人 |
KANG Gyung Don;YUN Ki Chull;KIM Sang Yob;BYUN Kil Seuk;RYUM Jung;KIM Boo Seong;KIM Sei Hoon;PARK Sung Bae |
分类号 |
C08G63/85;C08G63/183 |
主分类号 |
C08G63/85 |
代理机构 |
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代理人 |
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主权项 |
1. A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer, the method comprising:
performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C. or less; continuously performing a second esterification reaction of a reaction product from the first esterification reaction; continuously performing a first polycondensation reaction of a reaction product from the second esterification reaction to obtain a prepolymer; continuously performing a second polycondensation reaction of the prepolymer to obtain a second polycondensation reaction product having an intrinsic viscosity from about 0.9 dl/g to about 1.0 dl/g; and continuously performing a third polycondensation reaction of the second polycondensation reaction product to prepare the biodegradable aliphatic/aromatic polyester copolymer, wherein the performing of the first esterification reaction or the continuously performing of the second esterification reaction comprises adding an aromatic carboxylic acid. |
地址 |
Ulsan KR |