JPS5790025A - Production of lightweight polyurethane insulating material - Google Patents
Production of lightweight polyurethane insulating materialInfo
- Publication number
- JPS5790025A JPS5790025A JP16569280A JP16569280A JPS5790025A JP S5790025 A JPS5790025 A JP S5790025A JP 16569280 A JP16569280 A JP 16569280A JP 16569280 A JP16569280 A JP 16569280A JP S5790025 A JPS5790025 A JP S5790025A
- Authority
- JP
- Japan
- Prior art keywords
- polystyrene foam
- foam particles
- production
- urethane prepolymer
- insulating material
- 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 make it possible to add a large quantity of polystyrene foam particles, by employing a specified urethane prepolymer in the titled production of heat-insulating materials which comprises charging polystyrene foam particles into a polyurethane solution and expansion-molding the mixture.
CONSTITUTION: A polyether-polyol obtained by addition polymerization of an organic compound having at least two active hydrogen atoms, e.g., ethylene glycol, and an alkylene oxide, e.g., ethylene oxide, is reacted with a polyisocyanate, e.g., tolylene diisocyanate, to form a urethane prepolymer containing 5W35wt% free isocyanato groups. Next, the prepolymer is blended with polystyrene foam particles, average particle size 1W10mm, in amounts to provide a weight ratio of 2:1W1:5. The resulting mixture is placed in a mold having a desired shape and then foamed and cured by blowing in steam.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16569280A JPS5790025A (en) | 1980-11-25 | 1980-11-25 | Production of lightweight polyurethane insulating material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16569280A JPS5790025A (en) | 1980-11-25 | 1980-11-25 | Production of lightweight polyurethane insulating material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5790025A true JPS5790025A (en) | 1982-06-04 |
Family
ID=15817223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16569280A Pending JPS5790025A (en) | 1980-11-25 | 1980-11-25 | Production of lightweight polyurethane insulating material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5790025A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55107433A (en) * | 1979-02-09 | 1980-08-18 | Hitachi Chem Co Ltd | Manufacturing method for foaming plastic composite |
-
1980
- 1980-11-25 JP JP16569280A patent/JPS5790025A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55107433A (en) * | 1979-02-09 | 1980-08-18 | Hitachi Chem Co Ltd | Manufacturing method for foaming plastic composite |
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