JPS5552331A - Expandable styrene-based resin composition - Google Patents
Expandable styrene-based resin compositionInfo
- Publication number
- JPS5552331A JPS5552331A JP12427378A JP12427378A JPS5552331A JP S5552331 A JPS5552331 A JP S5552331A JP 12427378 A JP12427378 A JP 12427378A JP 12427378 A JP12427378 A JP 12427378A JP S5552331 A JPS5552331 A JP S5552331A
- Authority
- JP
- Japan
- Prior art keywords
- component
- blowing agent
- vinyl aromatic
- hydrocarbon
- aromatic hydrocarbon
- 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
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To obtain the title resin composition with high retention of blowing agent leading to high preliminary expansion ratio, by impregnating a blowing agent in a styrene -based copolymer carrying a specific amount of the block component and consisting of a vinyl aromatic hydrocarbon and a conjugated diene.
CONSTITUTION: A styrene-based polymer in the form of granules with a melt index ≤10 is first prepared by the copolymerization of (a) 95W60 parts by wt. of a vinyl aromatic hydrocarbon component with (b) 5W40 parts by wt. of a conjugated diene component so that ≥50wt% of the component (b) is copolymerized with part of the component (a) to form a block copolymer with a vinyl aromatic hydrocarbon content ≥50 wt%. The resulting product is then impregnated with 3W30wt% of a blowing agent consisting of at least one compound selected from an aliphatic hydrocarbon, alicyclic hydrocarbon, and halogenated hydrocarbon, thus giving the objective composition. On heating the composition to 90W110°C, highly preliminarily expanded beads can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12427378A JPS5552331A (en) | 1978-10-09 | 1978-10-09 | Expandable styrene-based resin composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12427378A JPS5552331A (en) | 1978-10-09 | 1978-10-09 | Expandable styrene-based resin composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5552331A true JPS5552331A (en) | 1980-04-16 |
Family
ID=14881248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12427378A Pending JPS5552331A (en) | 1978-10-09 | 1978-10-09 | Expandable styrene-based resin composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5552331A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61207448A (en) * | 1985-03-08 | 1986-09-13 | Sekisui Plastics Co Ltd | Expanded molding having improved dimensional accuracy and stability |
JP2017210538A (en) * | 2016-05-25 | 2017-11-30 | 株式会社カネカ | Method for producing foamable polystyrene resin particle |
-
1978
- 1978-10-09 JP JP12427378A patent/JPS5552331A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61207448A (en) * | 1985-03-08 | 1986-09-13 | Sekisui Plastics Co Ltd | Expanded molding having improved dimensional accuracy and stability |
JP2017210538A (en) * | 2016-05-25 | 2017-11-30 | 株式会社カネカ | Method for producing foamable polystyrene resin particle |
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