JPS5643379A - Production of blowing agent - Google Patents

Production of blowing agent

Info

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
Application number
JP11842179A
Other languages
Japanese (ja)
Other versions
JPH0216348B2 (en
Inventor
Hiroaki Imada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Technical Research Inc
Original Assignee
IG Technical Research Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IG Technical Research Inc filed Critical IG Technical Research Inc
Priority to JP11842179A priority Critical patent/JPS5643379A/en
Publication of JPS5643379A publication Critical patent/JPS5643379A/en
Publication of JPH0216348B2 publication Critical patent/JPH0216348B2/ja
Granted legal-status Critical Current

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
JP11842179A 1979-09-14 1979-09-14 Production of blowing agent Granted JPS5643379A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62230954A (en) * 1986-03-31 1987-10-09 Kawasaki Steel Corp Cold-rolled steel sheet

Cited By (1)

* Cited by examiner, † Cited by third party
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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