JPS5723619A - Preparation of flame-retardant rigid polyurethane foam - Google Patents
Preparation of flame-retardant rigid polyurethane foamInfo
- Publication number
- JPS5723619A JPS5723619A JP9687680A JP9687680A JPS5723619A JP S5723619 A JPS5723619 A JP S5723619A JP 9687680 A JP9687680 A JP 9687680A JP 9687680 A JP9687680 A JP 9687680A JP S5723619 A JPS5723619 A JP S5723619A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- addition
- foam
- preparation
- polyurethane foam
- 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 the titled foam having self-extinguishing characteristics without using a flame-retardant, by the use of a polyol obtained by the addition condensation of a dihydroxydiphenyl compound and formaldehyde, followed by addition of an alkylene oxide.
CONSTITUTION: 1mol of a dihydroxydiphenyl compound of formula (R and R' are H or alkyl) is subjected to the addition condensation with 0.3W0.9mol of formaldehyde to obtain a liquid product containing 20W60wt% of the polymer or oligomer of said dihydroxydiphenyl compound. Addition of an alkylene oxide to the liquid product gives a polyoxyalkylene polyol, which is made to react with polyisocyanate in the presence of a foaming agent, a catalyst, a foam stabilizer, etc.
EFFECT: The foam thus obtained has no surface friability and has excellent strength and dimensional stability.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9687680A JPS5723619A (en) | 1980-07-17 | 1980-07-17 | Preparation of flame-retardant rigid polyurethane foam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9687680A JPS5723619A (en) | 1980-07-17 | 1980-07-17 | Preparation of flame-retardant rigid polyurethane foam |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5723619A true JPS5723619A (en) | 1982-02-06 |
Family
ID=14176613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9687680A Pending JPS5723619A (en) | 1980-07-17 | 1980-07-17 | Preparation of flame-retardant rigid polyurethane foam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5723619A (en) |
-
1980
- 1980-07-17 JP JP9687680A patent/JPS5723619A/en active Pending
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