JPS54161672A - Expandable styrene polymer particles - Google Patents
Expandable styrene polymer particlesInfo
- Publication number
- JPS54161672A JPS54161672A JP7039378A JP7039378A JPS54161672A JP S54161672 A JPS54161672 A JP S54161672A JP 7039378 A JP7039378 A JP 7039378A JP 7039378 A JP7039378 A JP 7039378A JP S54161672 A JPS54161672 A JP S54161672A
- Authority
- JP
- Japan
- Prior art keywords
- polymer particles
- styrene polymer
- hydrocarbon
- thiourea compound
- expandable styrene
- 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)
Abstract
PURPOSE: Polymer particles capable of forming fine foams in pre-expanded particles without causing nonuniformity by a temperature change of the outside, obtained by adding a blowing agent consisting of a thiourea compound and a hydrocarbon to styrene polymer particles.
CONSTITUTION: 100 parts by wt. of styrene polymer particles is blended with 1-20 parts by wt. of a blowing agent consisting of 0.0001-0.05 part by wt., preferably 0.0005-0.01 part by wt. of a thiourea compound shown by the formula I, II, or III and a hydrocarbon having a boiling point not higher than a softening point of styrene polymer particles. Propane, cyclobutane, methyl chloride, etc. may be cited as the hydrocarbon; N,N'-dimethylthiourea, pentamethyleneurea, o-tolylenethiourea, etc., as the thiourea compound.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7039378A JPS54161672A (en) | 1978-06-13 | 1978-06-13 | Expandable styrene polymer particles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7039378A JPS54161672A (en) | 1978-06-13 | 1978-06-13 | Expandable styrene polymer particles |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54161672A true JPS54161672A (en) | 1979-12-21 |
JPS5734296B2 JPS5734296B2 (en) | 1982-07-22 |
Family
ID=13430148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7039378A Granted JPS54161672A (en) | 1978-06-13 | 1978-06-13 | Expandable styrene polymer particles |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161672A (en) |
-
1978
- 1978-06-13 JP JP7039378A patent/JPS54161672A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5734296B2 (en) | 1982-07-22 |
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