JPS5688417A - Preparation of expandable resin - Google Patents
Preparation of expandable resinInfo
- Publication number
- JPS5688417A JPS5688417A JP16619779A JP16619779A JPS5688417A JP S5688417 A JPS5688417 A JP S5688417A JP 16619779 A JP16619779 A JP 16619779A JP 16619779 A JP16619779 A JP 16619779A JP S5688417 A JPS5688417 A JP S5688417A
- Authority
- JP
- Japan
- Prior art keywords
- organic isocyanate
- polyol
- prepolymer
- addition
- prepare
- 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
- Polyurethanes Or Polyureas (AREA)
Abstract
PURPOSE: To prepare a semihard foam with excellent elasticity, by forming a urethane prepolymer by the reaction of a specified polyol with an organic isocyanate, and reacting the prepolymer with addition of water and an organic isocyanate.
CONSTITUTION: A polyol of MW ≥about 5,000, containing 15W60% ethylene oxide, is prepared by the addition polymerization of an amine (e.g., triethanolamine) with an epoxy compound such as ethylene oxide, propylene oxide or styrene oxide, and then said polyol is reacted with addition of an organic isocyanate (e.g., tolylene diisocyanate) at about 80W90°C for about 2W6hr, to prepare a urethane prepolymer. A foam is obtained by mixing and reacting 100pts.wt. said prepolymer, at least 10pts.wt. water and 60pts.wt. or less organic isocyanate.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16619779A JPS5688417A (en) | 1979-12-20 | 1979-12-20 | Preparation of expandable resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16619779A JPS5688417A (en) | 1979-12-20 | 1979-12-20 | Preparation of expandable resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5688417A true JPS5688417A (en) | 1981-07-17 |
Family
ID=15826882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16619779A Pending JPS5688417A (en) | 1979-12-20 | 1979-12-20 | Preparation of expandable resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5688417A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4832597A (en) * | 1971-08-31 | 1973-04-28 |
-
1979
- 1979-12-20 JP JP16619779A patent/JPS5688417A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4832597A (en) * | 1971-08-31 | 1973-04-28 |
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