JPS5470364A - Production of extruded polyester foam - Google Patents
Production of extruded polyester foamInfo
- Publication number
- JPS5470364A JPS5470364A JP13656577A JP13656577A JPS5470364A JP S5470364 A JPS5470364 A JP S5470364A JP 13656577 A JP13656577 A JP 13656577A JP 13656577 A JP13656577 A JP 13656577A JP S5470364 A JPS5470364 A JP S5470364A
- Authority
- JP
- Japan
- Prior art keywords
- blend
- polyester
- foaming
- production
- polyalkylene 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.)
- Granted
Links
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
PURPOSE: To obtain an extruded polyester foam of high ratio expansion which is foamed uniformly and finely, by injecting a low-boiling mateial into a blend of an aromatic polyester, a polyalkylene glycol diepoxide, and a metallic compound, followed by foaming the blend.
CONSTITUTION: (A) An aromatic polyester, e.g. polyethylene terephthalate, etc., having an intrinsic viscosity of 0.5W1.0 in 0-cholorophenol at 35°C is incorporated with (B) 0.005W5wt.%, preferably 0.1W4wt.%, based on the polyester of a polyalkylene glycol diepoxide, e.g. polypropylene glycol diglycidyl ether, etc., (C) 0.05W 3wt.%, preferably 0.1W2wt.% of a metal of groups IWIII A in the periodic table, e.g. Na, Ca, Al, etc., or its salt, e.g. sodium montanate, etc. 0.05W50wt.%, preferably 1W40wt.% of a blowing agent having a boiling point ≤ 200°C is injected into te blend thus formed in an extruder at 200W350°C, thus extruding and foaming the blend.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13656577A JPS5470364A (en) | 1977-11-16 | 1977-11-16 | Production of extruded polyester foam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13656577A JPS5470364A (en) | 1977-11-16 | 1977-11-16 | Production of extruded polyester foam |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5470364A true JPS5470364A (en) | 1979-06-06 |
JPS5746458B2 JPS5746458B2 (en) | 1982-10-04 |
Family
ID=15178209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13656577A Granted JPS5470364A (en) | 1977-11-16 | 1977-11-16 | Production of extruded polyester foam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5470364A (en) |
-
1977
- 1977-11-16 JP JP13656577A patent/JPS5470364A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5746458B2 (en) | 1982-10-04 |
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