FR2319625A1 - Azo dicarbonamide powder useful as blowing agents - by reacting molten mixt. of hydrazine salt and urea, and treating prod. with oxidising agent - Google Patents

Azo dicarbonamide powder useful as blowing agents - by reacting molten mixt. of hydrazine salt and urea, and treating prod. with oxidising agent

Info

Publication number
FR2319625A1
FR2319625A1 FR7523897A FR7523897A FR2319625A1 FR 2319625 A1 FR2319625 A1 FR 2319625A1 FR 7523897 A FR7523897 A FR 7523897A FR 7523897 A FR7523897 A FR 7523897A FR 2319625 A1 FR2319625 A1 FR 2319625A1
Authority
FR
France
Prior art keywords
prod
urea
treating
hydrazine salt
blowing agents
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
FR7523897A
Other languages
French (fr)
Other versions
FR2319625B1 (en
Inventor
Michel Alicot
Adrien Tignol
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.)
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
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 Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Priority to FR7523897A priority Critical patent/FR2319625A1/en
Priority to BE1007499A priority patent/BE843956A/en
Priority to JP8490376A priority patent/JPS5217424A/en
Priority to DK331676A priority patent/DK331676A/en
Priority to DE19762633933 priority patent/DE2633933A1/en
Priority to NL7608345A priority patent/NL7608345A/en
Priority to LU75490A priority patent/LU75490A1/xx
Priority to BR7604977A priority patent/BR7604977A/en
Priority to AU16424/76A priority patent/AU1642476A/en
Priority to ES450334A priority patent/ES450334A1/en
Publication of FR2319625A1 publication Critical patent/FR2319625A1/en
Application granted granted Critical
Publication of FR2319625B1 publication Critical patent/FR2319625B1/fr
Granted legal-status Critical Current

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

Abstract

Azodicarbonamide is prepd. by (a) reacting a molten mixt. of a hydrazine salt and urea, and (b) oxidising the prod. The process gives good yields, e.g., >90%, of azodicarbonamide. This prod. is obtd. in the form of fine particles having a uniform size, e.g., 10 mu. The particles can be used as blowing agents for rubbers and plastics without additional grinding operations. The hydrazine salt is pref. the sulphate. Stage (b) is effected with an oxidising agent in aq. dispersion, or by treating the dry prod. at 80-100 degrees C with nitrogen peroxide.
FR7523897A 1975-07-31 1975-07-31 Azo dicarbonamide powder useful as blowing agents - by reacting molten mixt. of hydrazine salt and urea, and treating prod. with oxidising agent Granted FR2319625A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR7523897A FR2319625A1 (en) 1975-07-31 1975-07-31 Azo dicarbonamide powder useful as blowing agents - by reacting molten mixt. of hydrazine salt and urea, and treating prod. with oxidising agent
BE1007499A BE843956A (en) 1975-07-31 1976-07-09 PROCESS FOR PREPARING AZODICARBONAMIDE FROM HYDRAZINE SALTS
JP8490376A JPS5217424A (en) 1975-07-31 1976-07-16 Process for manufacturing azodicarbonamides from hydrazines
DK331676A DK331676A (en) 1975-07-31 1976-07-22 PROCEDURE FOR THE PREPARATION OF AZODICARBONAMIDE FROM HYDRAZINE SALTS
DE19762633933 DE2633933A1 (en) 1975-07-31 1976-07-28 METHOD FOR PRODUCING AZODICARBONAMIDE
NL7608345A NL7608345A (en) 1975-07-31 1976-07-28 PROCESS FOR PREPARING AZODICAR BONAMIDE.
LU75490A LU75490A1 (en) 1975-07-31 1976-07-29
BR7604977A BR7604977A (en) 1975-07-31 1976-07-30 PROCESS FOR THE PREPARATION OF AZO-DICARBONAMIDE
AU16424/76A AU1642476A (en) 1975-07-31 1976-07-30 Azodicarbonamide from hydrazine salt
ES450334A ES450334A1 (en) 1975-07-31 1976-07-30 Process for manufacturing azodicarbonamides from hydrazines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7523897A FR2319625A1 (en) 1975-07-31 1975-07-31 Azo dicarbonamide powder useful as blowing agents - by reacting molten mixt. of hydrazine salt and urea, and treating prod. with oxidising agent

Publications (2)

Publication Number Publication Date
FR2319625A1 true FR2319625A1 (en) 1977-02-25
FR2319625B1 FR2319625B1 (en) 1979-01-19

Family

ID=9158580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7523897A Granted FR2319625A1 (en) 1975-07-31 1975-07-31 Azo dicarbonamide powder useful as blowing agents - by reacting molten mixt. of hydrazine salt and urea, and treating prod. with oxidising agent

Country Status (10)

Country Link
JP (1) JPS5217424A (en)
AU (1) AU1642476A (en)
BE (1) BE843956A (en)
BR (1) BR7604977A (en)
DE (1) DE2633933A1 (en)
DK (1) DK331676A (en)
ES (1) ES450334A1 (en)
FR (1) FR2319625A1 (en)
LU (1) LU75490A1 (en)
NL (1) NL7608345A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103193685A (en) * 2013-03-28 2013-07-10 杭州海虹精细化工有限公司 Method for producing ADC (azodicarbonamide) foaming agent by chlorine dioxide biurea
WO2016039466A1 (en) * 2014-09-12 2016-03-17 Ｉ＆Ｃ・ケムテック株式会社 New production method for azodicarbonamide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
DE2633933A1 (en) 1977-02-17
JPS5217424A (en) 1977-02-09
BR7604977A (en) 1977-08-09
DK331676A (en) 1977-02-01
NL7608345A (en) 1977-02-02
ES450334A1 (en) 1977-08-16
LU75490A1 (en) 1978-02-09
BE843956A (en) 1977-01-10
FR2319625B1 (en) 1979-01-19
AU1642476A (en) 1978-02-02

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