JPS5643379A - Production of blowing agent - Google Patents
Production of blowing agentInfo
- Publication number
- JPS5643379A JPS5643379A JP11842179A JP11842179A JPS5643379A JP S5643379 A JPS5643379 A JP S5643379A JP 11842179 A JP11842179 A JP 11842179A JP 11842179 A JP11842179 A JP 11842179A JP S5643379 A JPS5643379 A JP S5643379A
- Authority
- JP
- Japan
- Prior art keywords
- mixt
- heated
- blowing agent
- particulate matter
- borax
- 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
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To produce a blowing agent which can easily be blended with building compositional materials and whose central part is hollow, by a method wherein borax is mixed with an aq. soln. of sodium silicate, the mixt. is gently heated to attain a specified water content where the mixt. is apparently in a dried state the mixt. is quenched to solidify it, the resulting solid is ground, and the resulting particulate matter is heated at a high temperature for a short time.
CONSTITUTION: Borax is mixed with an aq. soln. of sodium silicate. The mixt. is gently heated until a material having a water content of about 30% is obtd. where the mixt. is apparently in a dried state. The heated material is quenched to solidify all of the material. The resulting solid is ground to a particulate matter having a particle diameter of 1W3mmϕ. The particulate matter is heated at a high temperature for a short time to produce the desired blowing agent which is hollow only in the central part of the particulate part and is in a semi-expanded state.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11842179A JPS5643379A (en) | 1979-09-14 | 1979-09-14 | Production of blowing agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11842179A JPS5643379A (en) | 1979-09-14 | 1979-09-14 | Production of blowing agent |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5643379A true JPS5643379A (en) | 1981-04-22 |
JPH0216348B2 JPH0216348B2 (en) | 1990-04-16 |
Family
ID=14736216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11842179A Granted JPS5643379A (en) | 1979-09-14 | 1979-09-14 | Production of blowing agent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5643379A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62230954A (en) * | 1986-03-31 | 1987-10-09 | Kawasaki Steel Corp | Cold-rolled steel sheet |
-
1979
- 1979-09-14 JP JP11842179A patent/JPS5643379A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62230954A (en) * | 1986-03-31 | 1987-10-09 | Kawasaki Steel Corp | Cold-rolled steel sheet |
Also Published As
Publication number | Publication date |
---|---|
JPH0216348B2 (en) | 1990-04-16 |
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