JPS5746956A - Purification of guanidine salt - Google Patents

Purification of guanidine salt

Info

Publication number
JPS5746956A
JPS5746956A JP12143880A JP12143880A JPS5746956A JP S5746956 A JPS5746956 A JP S5746956A JP 12143880 A JP12143880 A JP 12143880A JP 12143880 A JP12143880 A JP 12143880A JP S5746956 A JPS5746956 A JP S5746956A
Authority
JP
Japan
Prior art keywords
guanidine salt
earth metal
alkaline earth
salt
guanidine
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
Application number
JP12143880A
Other languages
Japanese (ja)
Inventor
Ryoji Takahashi
Koji Inoue
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.)
JNC Corp
Original Assignee
Chisso Corp
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 Chisso Corp filed Critical Chisso Corp
Priority to JP12143880A priority Critical patent/JPS5746956A/en
Publication of JPS5746956A publication Critical patent/JPS5746956A/en
Pending legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: A guanidine salt is treated with a hydroxide of alkaline earth metal, whereby it is purified to give the objective guanidine salt that is used as a flame retarder for cellulosic materials, because of its improved heat stability and high purity, containing no insoluble substances.
CONSTITUTION: A guanidine salt is melted or dissolved in water and a hydroxide of alkaline earth metal such as Mg(OH)2 and/or oxide such as CaO and added thereto so that the ammonium salt included in the guanidine salt becomes less than 0.04mol% based on the guanidine salt. Then, the mixture is stirred and/or treated with a blowing gas such as nitrogen or air to expel the ammonia gas formed. Further, the insoluble substances are removed by filtration to give purified guanidine salt or its aqueous solution. Thermally unstable substances in the crude guanidine salt react with the alkaline earth metal compound to form insoluble salts, which are removed, whereby high thermal stability is maintained as a flame retarder.
COPYRIGHT: (C)1982,JPO&Japio
JP12143880A 1980-09-02 1980-09-02 Purification of guanidine salt Pending JPS5746956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12143880A JPS5746956A (en) 1980-09-02 1980-09-02 Purification of guanidine salt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12143880A JPS5746956A (en) 1980-09-02 1980-09-02 Purification of guanidine salt

Publications (1)

Publication Number Publication Date
JPS5746956A true JPS5746956A (en) 1982-03-17

Family

ID=14811133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12143880A Pending JPS5746956A (en) 1980-09-02 1980-09-02 Purification of guanidine salt

Country Status (1)

Country Link
JP (1) JPS5746956A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523823A (en) * 1978-08-03 1980-02-20 Shin Meiwa Ind Co Ltd Refrigerator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523823A (en) * 1978-08-03 1980-02-20 Shin Meiwa Ind Co Ltd Refrigerator

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