JPS56116721A - Depolymerization of polyester - Google Patents
Depolymerization of polyesterInfo
- Publication number
- JPS56116721A JPS56116721A JP2031380A JP2031380A JPS56116721A JP S56116721 A JPS56116721 A JP S56116721A JP 2031380 A JP2031380 A JP 2031380A JP 2031380 A JP2031380 A JP 2031380A JP S56116721 A JPS56116721 A JP S56116721A
- Authority
- JP
- Japan
- Prior art keywords
- pellet
- depolymerized
- tubular reactor
- polyester
- depolymn
- 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
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE: To effect depolymn. in a short time with good processability, by use of a tubular reactor equipped with a stirring blade capable of vertically moving a pellet, when a polyester pellet is depolymerized by being heated together with an alcohol.
CONSTITUTION: When a rejected product, waste, etc. formed in a step of producing a molded product such as a polyester fiber or film, are reclaimed into a pellet, and the pellet is depolymerized by being heated and agitated together with an alcohol, to be reused as the raw material for a resin, the depolymn. is effected by use of a tubular reactor equipped with stirring blades 2, 3 and 5 capable of upwardly moving the pellet and with stirring blade 4 capable of downwardly moving the pellet. The pellet is fed into the tubular reactor, in which the pellet is depolymerized, being vertically moved and prevented from agglomeration by revolving the stirring blades at a peripheral velocity of 0.1W1m/sec.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2031380A JPS56116721A (en) | 1980-02-20 | 1980-02-20 | Depolymerization of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2031380A JPS56116721A (en) | 1980-02-20 | 1980-02-20 | Depolymerization of polyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56116721A true JPS56116721A (en) | 1981-09-12 |
Family
ID=12023639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2031380A Pending JPS56116721A (en) | 1980-02-20 | 1980-02-20 | Depolymerization of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56116721A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6576774B2 (en) | 2000-07-20 | 2003-06-10 | Shell Oil Company | Process for recycling polytrimethylene terephthalate cyclic dimer |
-
1980
- 1980-02-20 JP JP2031380A patent/JPS56116721A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6576774B2 (en) | 2000-07-20 | 2003-06-10 | Shell Oil Company | Process for recycling polytrimethylene terephthalate cyclic dimer |
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