JPS5736117A - Polyol composition for polyurethane synthesis - Google Patents
Polyol composition for polyurethane synthesisInfo
- Publication number
- JPS5736117A JPS5736117A JP11097980A JP11097980A JPS5736117A JP S5736117 A JPS5736117 A JP S5736117A JP 11097980 A JP11097980 A JP 11097980A JP 11097980 A JP11097980 A JP 11097980A JP S5736117 A JPS5736117 A JP S5736117A
- Authority
- JP
- Japan
- Prior art keywords
- pref
- urea
- polyol
- ethylene glycol
- reaction
- 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
- Polyethers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
PURPOSE: To prepare the titled composition giving a rigid polyurethane foam having excellent low temperature dimensional stability and excellent physical properties such as low density, high rigidity, etc., by modifying a polyol with urea.
CONSTITUTION: (A) A poly(oxyalkylene)polyol (e.g. adduct of ethylene glycol and alkylene oxide) and/or a low molecular weight polyol (e.g. ethylene glycol) are charged into, e.g. a rotary evaporator, mixed with (B) urea, and made to react under heating and stirring, pref. under reduced pressure, to obtain the objective composition. The reaction temperature is esp. pref. 130W200°C, and the generated ammonia gas is pref. removed completely from the reaction system. The amount of urea is pref. in excess in order to proceed the reaction sufficiently.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11097980A JPS5736117A (en) | 1980-08-14 | 1980-08-14 | Polyol composition for polyurethane synthesis |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11097980A JPS5736117A (en) | 1980-08-14 | 1980-08-14 | Polyol composition for polyurethane synthesis |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5736117A true JPS5736117A (en) | 1982-02-26 |
Family
ID=14549320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11097980A Pending JPS5736117A (en) | 1980-08-14 | 1980-08-14 | Polyol composition for polyurethane synthesis |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5736117A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104311817A (en) * | 2014-10-13 | 2015-01-28 | 杭州海虹精细化工有限公司 | Preparation method of blowing promoter using urea as basal body |
-
1980
- 1980-08-14 JP JP11097980A patent/JPS5736117A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104311817A (en) * | 2014-10-13 | 2015-01-28 | 杭州海虹精细化工有限公司 | Preparation method of blowing promoter using urea as basal body |
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