JPS643043A - Hydrofluoric acid anhydrous gypsum composition - Google Patents
Hydrofluoric acid anhydrous gypsum compositionInfo
- Publication number
- JPS643043A JPS643043A JP15725187A JP15725187A JPS643043A JP S643043 A JPS643043 A JP S643043A JP 15725187 A JP15725187 A JP 15725187A JP 15725187 A JP15725187 A JP 15725187A JP S643043 A JPS643043 A JP S643043A
- Authority
- JP
- Japan
- Prior art keywords
- composition
- hydrofluoric acid
- incorporating
- anhydrous gypsum
- gypsum
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
PURPOSE:To obtain the titled composition with hydraulic rate moderately made promotable, by incorporating proper amount of sulfamic acid or activated clay in a composition comprising hydrofluoric acid anhydrous gypsum and metal sulfate(s) as the curing promotor. CONSTITUTION:The objective composition can be obtained by incorporating (A) a composition prepared by incorporating (i) hydrofluoric acid anhydrous gypsum produced by adding, to a byproduct from hydrofluoric acid manufacturing processes, such amount of calcium hydroxide as to be more than that required for neutralizing the residual acid component with (ii) pref. 0.2-5.0wt.%, based on the gypsum, of at least one kind of curing promotor selected from potassium sulfate, sodium sulfate, aluminum sulfate and potash alum etc. with (B) such amount of sulfamic acid or activated clay as to be pH4-10 after kneading the composition A with water. This composition is suitable for gypsum board plaster etc. without using any setting retarder, also being able to made into self-leveling material by adding, furthermore, a fluidizing agent, viscosity regulator, antifoaming agent etc.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-157251A JPH013043A (en) | 1987-06-24 | Hydrofluoric anhydride composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-157251A JPH013043A (en) | 1987-06-24 | Hydrofluoric anhydride composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS643043A true JPS643043A (en) | 1989-01-06 |
JPH013043A JPH013043A (en) | 1989-01-06 |
Family
ID=
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5720305A (en) * | 1980-07-11 | 1982-02-02 | Nippon Hume Pipe | Manufacture of concrete product |
JPS5732018A (en) * | 1980-08-03 | 1982-02-20 | Tomosada Fukuyama | Machine for increasing output for automobile by utilizing its vibration energy and inducing property of exhaust gas |
JPS60103060A (en) * | 1983-11-07 | 1985-06-07 | 大日精化工業株式会社 | Fluidizing agent |
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5720305A (en) * | 1980-07-11 | 1982-02-02 | Nippon Hume Pipe | Manufacture of concrete product |
JPS5732018A (en) * | 1980-08-03 | 1982-02-20 | Tomosada Fukuyama | Machine for increasing output for automobile by utilizing its vibration energy and inducing property of exhaust gas |
JPS60103060A (en) * | 1983-11-07 | 1985-06-07 | 大日精化工業株式会社 | Fluidizing agent |
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