JPS5431499A - Preparation of polyurethane foam of low specific gravity - Google Patents
Preparation of polyurethane foam of low specific gravityInfo
- Publication number
- JPS5431499A JPS5431499A JP9760277A JP9760277A JPS5431499A JP S5431499 A JPS5431499 A JP S5431499A JP 9760277 A JP9760277 A JP 9760277A JP 9760277 A JP9760277 A JP 9760277A JP S5431499 A JPS5431499 A JP S5431499A
- Authority
- JP
- Japan
- Prior art keywords
- polyurethane foam
- specific gravity
- preparation
- low specific
- isocyanate
- 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
- Polyurethanes Or Polyureas (AREA)
Abstract
PURPOSE: To manufacture a polyurethane foam of ultralow specific gravity, by reaction of a polyol with an organic isocyanate to yield an urethane prepolymer containing a specific amount of isocyanate followed by adding water to carry out expansion.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9760277A JPS5431499A (en) | 1977-08-15 | 1977-08-15 | Preparation of polyurethane foam of low specific gravity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9760277A JPS5431499A (en) | 1977-08-15 | 1977-08-15 | Preparation of polyurethane foam of low specific gravity |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5431499A true JPS5431499A (en) | 1979-03-08 |
JPS5645493B2 JPS5645493B2 (en) | 1981-10-27 |
Family
ID=14196773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9760277A Granted JPS5431499A (en) | 1977-08-15 | 1977-08-15 | Preparation of polyurethane foam of low specific gravity |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5431499A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5228597A (en) * | 1975-08-29 | 1977-03-03 | Toyo Rubber Chem Ind Co Ltd | Process for producing rigid urethane foams having extremely low densit y |
-
1977
- 1977-08-15 JP JP9760277A patent/JPS5431499A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5228597A (en) * | 1975-08-29 | 1977-03-03 | Toyo Rubber Chem Ind Co Ltd | Process for producing rigid urethane foams having extremely low densit y |
Also Published As
Publication number | Publication date |
---|---|
JPS5645493B2 (en) | 1981-10-27 |
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