JPS57164122A - Continuous production of polycarbonate particle - Google Patents
Continuous production of polycarbonate particleInfo
- Publication number
- JPS57164122A JPS57164122A JP4725781A JP4725781A JPS57164122A JP S57164122 A JPS57164122 A JP S57164122A JP 4725781 A JP4725781 A JP 4725781A JP 4725781 A JP4725781 A JP 4725781A JP S57164122 A JPS57164122 A JP S57164122A
- Authority
- JP
- Japan
- Prior art keywords
- dough
- polycarbonate
- continuous production
- gel
- water content
- 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
- 239000002245 particle Substances 0.000 title abstract 4
- 229920000515 polycarbonate Polymers 0.000 title abstract 3
- 239000004417 polycarbonate Substances 0.000 title abstract 3
- 238000010924 continuous production Methods 0.000 title abstract 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 238000004898 kneading Methods 0.000 abstract 2
- 238000013019 agitation Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Landscapes
- Polyesters Or Polycarbonates (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
PURPOSE: To carry out the continuous production of the titled particles having a high bulk density and a uniform particle size distribution, by forming dough having a controlled water content from a polycarbonate solution and then allowing the dough to gel and grinding the gel.
CONSTITUTION: An organic solvent (e.g., methylene chloride) solution containing about 5W20wt% polycarbonate and steam are fed to an apparatus equipped with a kneading mechanism (e.g., tank for agitating a high-viscosity substance, having a screw feeder for discharging the dough on the bottom) wherein the solvent is volatilized and the condensed water is separated to obtain dough, water content ≤ about 10wt% (1st step). Next, this dough is transferred to an apparatus having a sufficiently powerful kneading mechanism (e.g., twin-screw extruder equipped with agitation blades), wherein the dough is continuously sheared and ground into particles, which are then discharged (2nd step).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4725781A JPS57164122A (en) | 1981-04-01 | 1981-04-01 | Continuous production of polycarbonate particle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4725781A JPS57164122A (en) | 1981-04-01 | 1981-04-01 | Continuous production of polycarbonate particle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57164122A true JPS57164122A (en) | 1982-10-08 |
Family
ID=12770220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4725781A Pending JPS57164122A (en) | 1981-04-01 | 1981-04-01 | Continuous production of polycarbonate particle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57164122A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6128529A (en) * | 1984-07-19 | 1986-02-08 | Mitsubishi Chem Ind Ltd | Polycarbonate resin particle for molding |
EP0300485A2 (en) * | 1987-07-21 | 1989-01-25 | Mitsubishi Gas Chemical Company, Inc. | Process for producing polycarbonate resin molding material with low particle content |
-
1981
- 1981-04-01 JP JP4725781A patent/JPS57164122A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6128529A (en) * | 1984-07-19 | 1986-02-08 | Mitsubishi Chem Ind Ltd | Polycarbonate resin particle for molding |
JPH0346009B2 (en) * | 1984-07-19 | 1991-07-12 | Mitsubishi Chem Ind | |
EP0300485A2 (en) * | 1987-07-21 | 1989-01-25 | Mitsubishi Gas Chemical Company, Inc. | Process for producing polycarbonate resin molding material with low particle content |
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