JPS5690840A - Expanding method of unsaturated polyester resin - Google Patents
Expanding method of unsaturated polyester resinInfo
- Publication number
- JPS5690840A JPS5690840A JP16691879A JP16691879A JPS5690840A JP S5690840 A JPS5690840 A JP S5690840A JP 16691879 A JP16691879 A JP 16691879A JP 16691879 A JP16691879 A JP 16691879A JP S5690840 A JPS5690840 A JP S5690840A
- Authority
- JP
- Japan
- Prior art keywords
- hydrazide
- polyester resin
- unsaturated polyester
- mixt
- foam
- 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 at low cost a foam having fine uniform cells with a high expansion ratio, by adding a metal salt of azodicarboxylic acid together with a hydrazide compd. to an unsaturated polyester resin, and expanding the mixt.
CONSTITUTION: 0.1W20pts.wt. hydrazide compd. (B) (e.g. maleic acid hydrazide or toluenesulfonyl hydrazide), 0.01W5pts.wt. metal salt of azodicarboxylic acid (C) (e.g. dipotassium azodicarboxylate or barium azodicarboxylate) and a crosslinking agent (D) (e.g. benzoyl peroxide) and, if necessary, an accelerator (E) (e.g. cobalt naphthenate), are mixed with 100pts.wt. unsaturated polyester resin compsn. (A). The mixt. is expanded at a temp. of not higher than 80°C and cured to easily obtain a foam without exhibiting a phenomenon which involves a rapid viscosity increase near a gelling temp.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16691879A JPS5690840A (en) | 1979-12-24 | 1979-12-24 | Expanding method of unsaturated polyester resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16691879A JPS5690840A (en) | 1979-12-24 | 1979-12-24 | Expanding method of unsaturated polyester resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5690840A true JPS5690840A (en) | 1981-07-23 |
Family
ID=15840054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16691879A Pending JPS5690840A (en) | 1979-12-24 | 1979-12-24 | Expanding method of unsaturated polyester resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5690840A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0055087A1 (en) * | 1980-12-22 | 1982-06-30 | Uniroyal, Inc. | Compositions and methods for producing expanded and cured polyester resin |
EP0105644A2 (en) * | 1982-09-30 | 1984-04-18 | UNIROYAL CHEMICAL COMPANY, Inc. | Azocarboxylate blowing agent |
-
1979
- 1979-12-24 JP JP16691879A patent/JPS5690840A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0055087A1 (en) * | 1980-12-22 | 1982-06-30 | Uniroyal, Inc. | Compositions and methods for producing expanded and cured polyester resin |
EP0105644A2 (en) * | 1982-09-30 | 1984-04-18 | UNIROYAL CHEMICAL COMPANY, Inc. | Azocarboxylate blowing agent |
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