JPS6445435A - Granulation of vinyl chloride polymer for paste processing - Google Patents
Granulation of vinyl chloride polymer for paste processingInfo
- Publication number
- JPS6445435A JPS6445435A JP20330787A JP20330787A JPS6445435A JP S6445435 A JPS6445435 A JP S6445435A JP 20330787 A JP20330787 A JP 20330787A JP 20330787 A JP20330787 A JP 20330787A JP S6445435 A JPS6445435 A JP S6445435A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- vinyl chloride
- air flow
- spray dryer
- paste processing
- 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
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
PURPOSE:To obtain granulated particles having improved powder handleability and sol dispersibility, by feeding an aqueous dispersion containing vinyl chloride polymer for paste processing to a spray dryer under a specific condition. CONSTITUTION:An aqueous dispersion containing vinyl chloride polymer for paste processing in <=100mum average droplet diameter is fed to a spray dryer into which drying high-temperature air flow at >=50 deg.C and powder recycling low-temperature air flow at <=50 deg.C are introduced and fine powder accompanied by exhaust air and taken out is separated. The fine powder together with the low-temperature air flow is recycled in the spray dryer and integrated with sprayed liquid drops to form aggregates. Aggregates having reached the aimed size are taken out at <=15% water content, the polymer aggregates are dried at <=50 deg.C and the polymer is granulated. The aggregate particles of the granulated polymer have preferably 300-50mum particle diameter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20330787A JPS6445435A (en) | 1987-08-13 | 1987-08-13 | Granulation of vinyl chloride polymer for paste processing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20330787A JPS6445435A (en) | 1987-08-13 | 1987-08-13 | Granulation of vinyl chloride polymer for paste processing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6445435A true JPS6445435A (en) | 1989-02-17 |
Family
ID=16471865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20330787A Pending JPS6445435A (en) | 1987-08-13 | 1987-08-13 | Granulation of vinyl chloride polymer for paste processing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6445435A (en) |
-
1987
- 1987-08-13 JP JP20330787A patent/JPS6445435A/en active Pending
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