JPS56139577A - Sealant material consisting of urethane prepolymer composition - Google Patents
Sealant material consisting of urethane prepolymer compositionInfo
- Publication number
- JPS56139577A JPS56139577A JP4297080A JP4297080A JPS56139577A JP S56139577 A JPS56139577 A JP S56139577A JP 4297080 A JP4297080 A JP 4297080A JP 4297080 A JP4297080 A JP 4297080A JP S56139577 A JPS56139577 A JP S56139577A
- Authority
- JP
- Japan
- Prior art keywords
- sealant material
- urethane prepolymer
- isocyanate groups
- carbon black
- sealant
- 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
Abstract
PURPOSE: To provide a sealant material which does not leave bubbles after curing, by a method wherein carbon black (which has a large surface area and exhibits less oil absorption) in an amount above a specified weight is blended with a compsn. consisting of a urethane prepolymer having isocyanate groups and a plasticizer.
CONSTITUTION: A urethane prepolymer (A) having 0.4W6% isocyanate groups at its terminal and an average MW of 740W28,000, 20W400wt% (based on the weight of the component A) plasticizer (B) such as dioctyl phthalate or diisodecyl phthalate, and carbon black (C) having a surface area of 80m2/g or more and an oil absorption of 1.5cc/g or below in an amount of not less than the weight calculated by the formula, are mixed together to obtain the titled sealant material. During the use of the sealant material, carbon dioxide evolved by the reaction of the isocyanate groups in the sealant with water is adsorbed by carbon black. The bubbles after the curing of the sealant material is prevented from being left behind.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4297080A JPS56139577A (en) | 1980-04-02 | 1980-04-02 | Sealant material consisting of urethane prepolymer composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4297080A JPS56139577A (en) | 1980-04-02 | 1980-04-02 | Sealant material consisting of urethane prepolymer composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56139577A true JPS56139577A (en) | 1981-10-31 |
JPH0158234B2 JPH0158234B2 (en) | 1989-12-11 |
Family
ID=12650886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4297080A Granted JPS56139577A (en) | 1980-04-02 | 1980-04-02 | Sealant material consisting of urethane prepolymer composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56139577A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60137372A (en) * | 1983-12-26 | 1985-07-20 | タツタ電線株式会社 | Seal material |
-
1980
- 1980-04-02 JP JP4297080A patent/JPS56139577A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60137372A (en) * | 1983-12-26 | 1985-07-20 | タツタ電線株式会社 | Seal material |
JPH0469196B2 (en) * | 1983-12-26 | 1992-11-05 | Tatsuta Densen Kk |
Also Published As
Publication number | Publication date |
---|---|
JPH0158234B2 (en) | 1989-12-11 |
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