JPS56159220A - High-crystallinity thermoplastic copolyester - Google Patents
High-crystallinity thermoplastic copolyesterInfo
- Publication number
- JPS56159220A JPS56159220A JP6451480A JP6451480A JPS56159220A JP S56159220 A JPS56159220 A JP S56159220A JP 6451480 A JP6451480 A JP 6451480A JP 6451480 A JP6451480 A JP 6451480A JP S56159220 A JPS56159220 A JP S56159220A
- Authority
- JP
- Japan
- Prior art keywords
- copolyester
- residue
- component containing
- terephthalic acid
- ethylene glycol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: The titled copolyester that is made by copolymerizing a small amount of polyalkylene glycol with polyethylene terephthalate, thus being suitably used as an injection molding material, because of its high crystallization speed.
CONSTITUTION: The copolyester is composed of the acid component containing more than 90mol% terephthalic acid residue and of the diol component containing 98W99.999mol% of ethylene glycol residue and 2W1.001mol% of polyalkylene glycol residue with an average molecular weight of 4,000W20,000 and a carbon to oxygen ratio of 2W45. For example, terephthalic acid or its dimethyl ester is esterified or ester-interchanged with ethylene glycol and polyethylene glycol in the presence of a manganese catalyst and the polycondensation reaction is effected using an antimony catalyst to produce the objective polyester.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6451480A JPS56159220A (en) | 1980-05-15 | 1980-05-15 | High-crystallinity thermoplastic copolyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6451480A JPS56159220A (en) | 1980-05-15 | 1980-05-15 | High-crystallinity thermoplastic copolyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56159220A true JPS56159220A (en) | 1981-12-08 |
Family
ID=13260388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6451480A Pending JPS56159220A (en) | 1980-05-15 | 1980-05-15 | High-crystallinity thermoplastic copolyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56159220A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000064961A1 (en) * | 1999-04-28 | 2000-11-02 | Eastman Chemical Company | Crystallisable copolyesters |
US6485804B1 (en) | 1996-02-21 | 2002-11-26 | Mitsui Petrochemical Industries, Ltd. | Polyester compositions and laminates and processes for producing biaxially stretched polyester bottles |
-
1980
- 1980-05-15 JP JP6451480A patent/JPS56159220A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6485804B1 (en) | 1996-02-21 | 2002-11-26 | Mitsui Petrochemical Industries, Ltd. | Polyester compositions and laminates and processes for producing biaxially stretched polyester bottles |
WO2000064961A1 (en) * | 1999-04-28 | 2000-11-02 | Eastman Chemical Company | Crystallisable copolyesters |
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