JPS6448815A - Production of rigid polyurethane foam - Google Patents
Production of rigid polyurethane foamInfo
- Publication number
- JPS6448815A JPS6448815A JP62204225A JP20422587A JPS6448815A JP S6448815 A JPS6448815 A JP S6448815A JP 62204225 A JP62204225 A JP 62204225A JP 20422587 A JP20422587 A JP 20422587A JP S6448815 A JPS6448815 A JP S6448815A
- Authority
- JP
- Japan
- Prior art keywords
- component
- polyol
- per molecule
- groups per
- compound
- 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 obtain a rigid polyurethane foam of excellent heat resistance, by mixing a specified prepolymer with a polyol and a blowing agent and foaming the mixture. CONSTITUTION:A polyol (a) of an OH value >=150mgKOH/g, obtained by the addition reaction of a compound having at least four OH groups per molecule or a mixture (i) having two or three OH groups per molecule on the average, and comprising a compound having at least five OH groups per molecule and a compound having two or three OH groups per molecule and ethylene oxide (ii), is reacted with 3-30 equivalents, per equivalent of component (a), of at least one polyisocyanate component (b) selected from among (undistilled) tolylene diisocyanate and polymethylenepolyphenyl polyisocyanate to obtain a prepolymer (A). Component A is mixed with 0.5-2.0 equivalents, per equivalent of component A, of a polyol (B) (e.g., a polyol formed by the addition reaction of pentaerythritol and ethylene oxide), 5-100pts.wt., per 100pts.wt. component B, blowing agent (C) and, optionally, a catalyst, a foam stabilizer, etc. (D), and the resulting mixture is foamed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204225A JPS6448815A (en) | 1987-08-19 | 1987-08-19 | Production of rigid polyurethane foam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204225A JPS6448815A (en) | 1987-08-19 | 1987-08-19 | Production of rigid polyurethane foam |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6448815A true JPS6448815A (en) | 1989-02-23 |
Family
ID=16486909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62204225A Pending JPS6448815A (en) | 1987-08-19 | 1987-08-19 | Production of rigid polyurethane foam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6448815A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0384023A (en) * | 1989-08-29 | 1991-04-09 | Nippon Urethane Service:Kk | Production of rigid polyurethane foam |
JPH0384022A (en) * | 1989-08-25 | 1991-04-09 | Nippon Urethane Service:Kk | Production of rigid polyurethane foam |
WO2017030065A1 (en) * | 2015-08-18 | 2017-02-23 | 三井化学株式会社 | Polyurethane foam material, molded article, and method for producing polyurethane foam material |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5192897A (en) * | 1975-02-12 | 1976-08-14 | Horiuretanfuoomuno seizohoho | |
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 |
JPS57108120A (en) * | 1980-12-24 | 1982-07-06 | Dai Ichi Kogyo Seiyaku Co Ltd | Production of novel polyurethane semirigid foam |
-
1987
- 1987-08-19 JP JP62204225A patent/JPS6448815A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5192897A (en) * | 1975-02-12 | 1976-08-14 | Horiuretanfuoomuno seizohoho | |
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 |
JPS57108120A (en) * | 1980-12-24 | 1982-07-06 | Dai Ichi Kogyo Seiyaku Co Ltd | Production of novel polyurethane semirigid foam |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0384022A (en) * | 1989-08-25 | 1991-04-09 | Nippon Urethane Service:Kk | Production of rigid polyurethane foam |
JPH0384023A (en) * | 1989-08-29 | 1991-04-09 | Nippon Urethane Service:Kk | Production of rigid polyurethane foam |
WO2017030065A1 (en) * | 2015-08-18 | 2017-02-23 | 三井化学株式会社 | Polyurethane foam material, molded article, and method for producing polyurethane foam material |
US10513575B2 (en) | 2015-08-18 | 2019-12-24 | Mitsui Chemicals, Inc. | Foam polyurethane material, molded article, and method for producing foam polyurethane material |
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