JPS5723636A - Preparation of heat insulating material with waste material of rigid polyurethane roam - Google Patents
Preparation of heat insulating material with waste material of rigid polyurethane roamInfo
- Publication number
- JPS5723636A JPS5723636A JP8712080A JP8712080A JPS5723636A JP S5723636 A JPS5723636 A JP S5723636A JP 8712080 A JP8712080 A JP 8712080A JP 8712080 A JP8712080 A JP 8712080A JP S5723636 A JPS5723636 A JP S5723636A
- Authority
- JP
- Japan
- Prior art keywords
- rigid polyurethane
- prepolymer
- waste material
- heat insulating
- cured
- 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 the titled heat insulating mateial, having a strength not inferior to that of a urethane foam, and usable for building, by mixing a prepolymer containing free isocyanate with a crushed waste material of rigid polyurethane foam, etc., and reacting and curing the prepolymer with superheated steam.
CONSTITUTION: A waste material of rigid polyurethane foam is pulverized or cut to a chiplike waste material having a diameter of about 20mmϕ or less. 100prs.wt resultant material is then mixed with 5W30pts.wt solution prepared by adding a solvent, e.g. an aromatic hydrocarbon, to a prepolymer for a rigid polyurethane containing 1W48% free isocyanate obtained by reacting 100pts.wt polyol with 50W300pts.wt isocyanate to reduce the viscosity of the prepolymer as a binder by the spray coating, etc. The resultant mixture is then compressed in a mold, reacted and cured by injecting supreheated steam of vapor pressure 0.6W7.5kg/cm2 for 30sec-10min thereinto. Hot air at 60W150°C is then blown on the cured material for 10W30min to evaporate the absorbed water and dry the cured material.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8712080A JPS5723636A (en) | 1980-06-26 | 1980-06-26 | Preparation of heat insulating material with waste material of rigid polyurethane roam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8712080A JPS5723636A (en) | 1980-06-26 | 1980-06-26 | Preparation of heat insulating material with waste material of rigid polyurethane roam |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5723636A true JPS5723636A (en) | 1982-02-06 |
Family
ID=13906089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8712080A Pending JPS5723636A (en) | 1980-06-26 | 1980-06-26 | Preparation of heat insulating material with waste material of rigid polyurethane roam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5723636A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63136912U (en) * | 1987-02-28 | 1988-09-08 | ||
US5525278A (en) * | 1992-03-30 | 1996-06-11 | Hecker Und Krosch Gmbh & Co. Kg | Recycling process and apparatus for rigid polyurethane foam |
WO2004052608A1 (en) * | 2002-12-10 | 2004-06-24 | Collins & Aikman Products Co. | Acoustic articles utilizing isocyanate binders and methods of making same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4944085A (en) * | 1972-09-02 | 1974-04-25 | ||
JPS5228576A (en) * | 1975-08-29 | 1977-03-03 | Toyo Rubber Chemical Ind Co | Process for regenerating disposed hard foamed urethane |
-
1980
- 1980-06-26 JP JP8712080A patent/JPS5723636A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4944085A (en) * | 1972-09-02 | 1974-04-25 | ||
JPS5228576A (en) * | 1975-08-29 | 1977-03-03 | Toyo Rubber Chemical Ind Co | Process for regenerating disposed hard foamed urethane |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63136912U (en) * | 1987-02-28 | 1988-09-08 | ||
US5525278A (en) * | 1992-03-30 | 1996-06-11 | Hecker Und Krosch Gmbh & Co. Kg | Recycling process and apparatus for rigid polyurethane foam |
WO2004052608A1 (en) * | 2002-12-10 | 2004-06-24 | Collins & Aikman Products Co. | Acoustic articles utilizing isocyanate binders and methods of making same |
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