JPS56159212A - Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals - Google Patents
Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminalsInfo
- Publication number
- JPS56159212A JPS56159212A JP6340680A JP6340680A JPS56159212A JP S56159212 A JPS56159212 A JP S56159212A JP 6340680 A JP6340680 A JP 6340680A JP 6340680 A JP6340680 A JP 6340680A JP S56159212 A JPS56159212 A JP S56159212A
- Authority
- JP
- Japan
- Prior art keywords
- isocyanate groups
- terminals
- production
- aliphatic diisocyanate
- urethane prepolymer
- 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
- Adhesives Or Adhesive Processes (AREA)
- Polyurethanes Or Polyureas (AREA)
- Paints Or Removers (AREA)
Abstract
PURPOSE: The reaction between an excess amount of aliphatic diisocyanate and an alkylene diol with a branched chain is followed by removal of the excess of the diisocyanate, thus producing the titled prepolymer free from yellowing, toxicity and irritation.
CONSTITUTION: The reaction is effected between (A) an aliphatic diisocyanate, preferably hexamethylenediisocyanate (HMDI) and (B) an alkylene diol of 3W10 carbon atoms, bearing branches, preferably 1,3-butane diol. Then, the unreacted HMDI is removed from the reaction mixture using, e.g., a thin-film evaporator to give the objective bifunctional prepolymer. The molar ratio of the aliphatic diisocyanate to the alkylene diol is preferably more than 4 and the remaining isocyanate groups is preferably less than 0.7wt%.
USE: Foaming agent, adhesive, sealing agent, flooring material.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6340680A JPS56159212A (en) | 1980-05-15 | 1980-05-15 | Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6340680A JPS56159212A (en) | 1980-05-15 | 1980-05-15 | Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56159212A true JPS56159212A (en) | 1981-12-08 |
JPS6353209B2 JPS6353209B2 (en) | 1988-10-21 |
Family
ID=13228381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6340680A Granted JPS56159212A (en) | 1980-05-15 | 1980-05-15 | Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56159212A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6112678A (en) * | 1984-06-28 | 1986-01-21 | Dainippon Ink & Chem Inc | Preparation of improved polyisocyanate |
JPS6128518A (en) * | 1984-07-20 | 1986-02-08 | Asahi Chem Ind Co Ltd | Production of prepolymer for ductile polyurethane coating |
EP0210566A2 (en) * | 1985-08-02 | 1987-02-04 | Bayer Ag | Process for the fabrication of light resistant, elastic polyurethane molded parts |
JPS63264663A (en) * | 1987-04-20 | 1988-11-01 | Kuraray Co Ltd | Polyurethane article of good yellowing resistance and its production |
-
1980
- 1980-05-15 JP JP6340680A patent/JPS56159212A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6112678A (en) * | 1984-06-28 | 1986-01-21 | Dainippon Ink & Chem Inc | Preparation of improved polyisocyanate |
JPS6128518A (en) * | 1984-07-20 | 1986-02-08 | Asahi Chem Ind Co Ltd | Production of prepolymer for ductile polyurethane coating |
JPH0340048B2 (en) * | 1984-07-20 | 1991-06-17 | ||
EP0210566A2 (en) * | 1985-08-02 | 1987-02-04 | Bayer Ag | Process for the fabrication of light resistant, elastic polyurethane molded parts |
JPS63264663A (en) * | 1987-04-20 | 1988-11-01 | Kuraray Co Ltd | Polyurethane article of good yellowing resistance and its production |
Also Published As
Publication number | Publication date |
---|---|
JPS6353209B2 (en) | 1988-10-21 |
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