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JPS6018649B2 - Method for producing 2,2'-hydrazobis(2,4-dimethylvaleronitrile) - Google Patents
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JPS6018649B2 - Method for producing 2,2'-hydrazobis(2,4-dimethylvaleronitrile) - Google Patents

Method for producing 2,2'-hydrazobis(2,4-dimethylvaleronitrile)

Info

Publication number
JPS6018649B2
JPS6018649B2 JP57182352A JP18235282A JPS6018649B2 JP S6018649 B2 JPS6018649 B2 JP S6018649B2 JP 57182352 A JP57182352 A JP 57182352A JP 18235282 A JP18235282 A JP 18235282A JP S6018649 B2 JPS6018649 B2 JP S6018649B2
Authority
JP
Japan
Prior art keywords
melting point
add
compounds
abvn
dimethylvaleronitrile
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.)
Expired
Application number
JP57182352A
Other languages
Japanese (ja)
Other versions
JPS5877855A (en
Inventor
正典 嵐
久彦 嶋田
成幸 藤墳
公生 神屋
奉之 宮崎
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.)
Fujifilm Wako Pure Chemical Corp
Original Assignee
Wako Pure Chemical Industries Ltd
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 Wako Pure Chemical Industries Ltd filed Critical Wako Pure Chemical Industries Ltd
Priority to JP57182352A priority Critical patent/JPS6018649B2/en
Publication of JPS5877855A publication Critical patent/JPS5877855A/en
Publication of JPS6018649B2 publication Critical patent/JPS6018649B2/en
Expired legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Description

【発明の詳細な説明】 本発明はラジカル重合開始剤、発泡剤等として有用な2
,2′ーアゾビス(2,4−ジメチルワレロニトリル)
(以下ABVNと略称する。
DETAILED DESCRIPTION OF THE INVENTION The present invention provides two compounds useful as radical polymerization initiators, blowing agents, etc.
,2'-azobis(2,4-dimethylvaleronitrile)
(Hereinafter abbreviated as ABVN.

)の製造方法に係る。詳記すると、亜鉛、錫、鉄、銅、
アルミニウムから成る群から選ばれた金属塩の単独また
は混合の存在下にメチルイソブチルケトアチン(以下M
BKAと略称する。)とシアン化水素とを反応させて得
られた2,2ーヒドラゾビス(2,4ージメチルワレロ
ニトリル)(以下HBVNと略称する。)をハロゲン等
で酸化し、低融点異性体に富むABVNを得る製造方法
に関する。ABVNは特に重合開始剤として、例えば塩
化ビニル、アクリロニトリル等の重合効率及び生成ポリ
マーの物体が他の重合開始剤と比べて遥かに勝れた性能
を有し、さらにビニル化合物全般にわたり例えば、エチ
レン、スチレン、アクリル酸ェステル、メタアクリル酸
ェステル、弗化ビニル、酢酸ビニル、アクリルアミド、
アクリル酸、メタアクリル酸、ビニルピリジンなどの有
効な重合開始剤として近来ますます重要性が高まってい
る。
). In detail, zinc, tin, iron, copper,
Methylisobutylketoatine (hereinafter referred to as M
It is abbreviated as BKA. ) and hydrogen cyanide to oxidize 2,2-hydrazobis(2,4-dimethylvaleronitrile) (hereinafter abbreviated as HBVN) with halogen etc. to obtain ABVN rich in low-melting isomers. Regarding the method. ABVN has particularly superior performance as a polymerization initiator, such as vinyl chloride, acrylonitrile, etc., in terms of polymerization efficiency and produced polymer properties, compared to other polymerization initiators. Styrene, acrylate ester, methacrylate ester, vinyl fluoride, vinyl acetate, acrylamide,
It has recently become increasingly important as an effective polymerization initiator for acrylic acid, methacrylic acid, vinylpyridine, etc.

ところでABVMよ、オーバーバーガ−(C.G.○〜
erberger)、ジヤーナル オブ アメリ力ンケ
ミカル ソサイテイ(JoumalofAmerica
nchemicalSociety),第7鏡巻 26
18頁の報告のある如く、融点56qo〜57午C、若
しくは74qo〜770のメソ体若しくはdl体なる立
体異性に起因する2種の異性体から成っており、分解速
度定数は低融点化合物K(sec‐1×1び)=2.8
9(69.9℃)、高融点化合物K(sec‐1×1び
)=1.職(69.800)であり、通常公知の製法に
よっては繭&真約48℃〜65つ○の、異性体の混合物
として提供される。ABVNの低融点化合物、高融点化
合物の比率は経験的に融点幅により、又は赤外吸収スペ
クトル、核磁気共鳴スペクトル等の解析により測定され
る。
By the way, ABVM, Oberburger (C.G.○~
erberger), Journal of America Chemical Society (JomalofAmerica)
nchemical Society), No. 7 Kagami Volume 26
As reported on page 18, it consists of two stereoisomers, the meso form and the dl form, with melting points of 56qo to 57°C and 74qo to 770°C, and the decomposition rate constant is that of the low melting point compound K ( sec-1×1bi)=2.8
9 (69.9°C), high melting point compound K (sec-1×1 second)=1. (69.800), and is usually provided as a mixture of isomers in cocoons and temperatures ranging from about 48°C to 65°C depending on known manufacturing methods. The ratio of low melting point compounds and high melting point compounds in ABVN is determined empirically by melting point width or by analysis of infrared absorption spectrum, nuclear magnetic resonance spectrum, etc.

例えば赤外吸収スペクトルでは波数720の‐1,73
5肌‐1の吸収を比較すると、低融点化合物は720弧
‐1にシャープな吸収を有し、735の‐1は吸収がな
く、高藤点化合物はその逆である。さらに1対1の混合
物の場合は、720弧‐1と735肌‐1の吸収強度は
ほぼ1対1の比を示す。
For example, in the infrared absorption spectrum, -1,73 at wave number 720
Comparing the absorption of 5 skin-1, the low melting point compound has sharp absorption at 720 arc-1, 735-1 has no absorption, and the opposite is true for Takafuji point compound. Furthermore, in the case of a 1:1 mixture, the absorption intensities of 720 Arc-1 and 735 Skin-1 show a nearly 1:1 ratio.

一方低融点化合物と、高融点化合物及び従釆の製法によ
る混合物の各種有機溶媒への溶解度を比較すると、低融
点化合物の溶解度は他に比して数情高く、特に低温時で
その差が顕著に現われる。それゆえに、低融点化合物に
富むABVNを製造し得るなら、従釆の混合物により、
より重合性が高く且つ溶媒の選択に関し極めて有利なA
BVNを使用し得ることとなり、新しい重合開始剤を提
供するものとして重要である。本発明者等は上記の点に
留意し、鋭意研究の結果本発明を完成した。
On the other hand, when comparing the solubility in various organic solvents of low melting point compounds, high melting point compounds, and mixtures produced by the secondary method, the solubility of low melting point compounds is numerically higher than that of other compounds, and the difference is especially noticeable at low temperatures. appears in Therefore, if ABVN rich in low melting point compounds can be produced, by a mixture of secondary
A has higher polymerizability and is extremely advantageous in terms of solvent selection.
This makes it possible to use BVN and is important as it provides a new polymerization initiator. The present inventors kept the above points in mind and completed the present invention as a result of intensive research.

本発明方法は公知の方法によりMBKAを製造し、亜鉛
、錫、銅、鉄、アルミニウムの塩酸塩、臭酸塩、及び硫
酸塩、硝酸塩、酢酸塩、シュウ酸塩等の酸塩の存在下好
ましくはフリーデルクラフッ触媒である。
In the method of the present invention, MBKA is produced by a known method, preferably in the presence of an acid salt such as hydrochloride, bromate, sulfate, nitrate, acetate, or oxalate of zinc, tin, copper, iron, or aluminum. is a Friedel-Krauch catalyst.

亜鉛、錫、鉄、銅、アルミニウムの塩化物、臭化物のハ
ロゲン化物の存在下でシアン化水素と反応し、HBVN
を製造し、このような履歴をもつHBVNを出発原料と
して、これをハロゲン等で酸化して、低融点化合物に富
むABVNを製造する。かかる出発原料のHBVNを得
る反応は通常、室温乃至40℃で5〜1餌時間、亜鉛、
錫、銅、鉄、アルミニウムの塩はMBKAに対して0.
05%〜30%、好ましくは0.5〜10%を単独また
は混合して使用される。
Reacts with hydrogen cyanide in the presence of chlorides and bromides of zinc, tin, iron, copper, and aluminum, producing HBVN.
Using HBVN with such a history as a starting material, it is oxidized with halogen or the like to produce ABVN rich in low-melting compounds. The reaction to obtain such starting material HBVN is usually carried out at room temperature to 40°C for 5 to 1 feeding time, with zinc,
Salts of tin, copper, iron, and aluminum are 0.0% relative to MBKA.
05% to 30%, preferably 0.5 to 10%, alone or in combination.

シアン化水素は好ましくは無水状で反応するのがよい。
反応に使用される溶媒はM旧Kへ HBVN,およびシ
アン化水素に不活性なものであれば通常のものが支障な
く使用される。
Hydrogen cyanide is preferably reacted in an anhydrous state.
As for the solvent used in the reaction, any ordinary solvent can be used without any problem as long as it is inert to M old K, HBVN, and hydrogen cyanide.

得られたHBVNの酸化反応は−20℃〜30qo、好
ましくは2ぴ0以下で、通常のABVNの製造方法に従
って行えばよい。かかる方法によって製造されたABV
NはMBKAからほぼ定量的に得られ、しかも重合活性
の高い又、溶解度の高い低融点化合物に富み、新規な重
合開始剤として提供され、斯界に貢献するところ大であ
る。
The oxidation reaction of the obtained HBVN may be carried out at -20° C. to 30 qo, preferably at 2 p0 or less, according to a conventional method for producing ABVN. ABV produced by such a method
N can be obtained almost quantitatively from MBKA, and is rich in low-melting compounds with high polymerization activity and high solubility, and can be provided as a new polymerization initiator, making a great contribution to this field.

例えば、本発明の低融点化合物に富む重合開始剤はエチ
レン、スチレン、アクリル酸ェステル、塩化ビニル、酢
酸ビニル、アクリルアミド、アクリル酸、メタアクリル
酸、ビニルピリジン、不飽和ポリエステル等の重合開始
剤として有効に使用される。以下実施例を述べる。実施
例 1 MBKA59夕に塩化亜鉛0.5夕を加え、蝿梓下、無
水状シアン化水素17夕を水冷下10qo〜35ooで
滴下し、1餌時間室温で放置反応させる。
For example, the polymerization initiator rich in low melting point compounds of the present invention is effective as a polymerization initiator for ethylene, styrene, acrylate ester, vinyl chloride, vinyl acetate, acrylamide, acrylic acid, methacrylic acid, vinylpyridine, unsaturated polyester, etc. used for. Examples will be described below. Example 1 0.5 tons of zinc chloride is added to 59 tons of MBKA, 17 tons of anhydrous hydrogen cyanide is added dropwise under water cooling at 10 to 35 tons, and the mixture is left to react at room temperature for 1 hour.

反応物にメタノール100Mを加え、縄梓下クロル22
夕を氷袷下500〜20q0で導入し、水を加えて、析
出するABVN73.6夕を得る。
Add 100M methanol to the reaction mixture, and add 22
Introduce 500 to 20 q0 q0 of water under the ice, add water, and obtain ABVN73.6 water that precipitates.

融点56〜58qo、含量99.8%、ヒドラゾ含量0
.05%、(低融点化合物約蝋%)。
Melting point 56-58qo, content 99.8%, hydrazo content 0
.. 05% (approximately % wax of low melting point compounds).

実施例 2 M旧KA59夕に塩化第2錫1夕を加え、蝿梓下、無水
状シアン化水素18夕を水冷下10℃〜35℃で滴下し
、8時間室温で放置反応させる。
Example 2 One day of stannic chloride was added to M old KA59, and 18 hours of anhydrous hydrogen cyanide was added dropwise at 10°C to 35°C under water cooling, and the mixture was allowed to react at room temperature for 8 hours.

反応物にメタノール100の【を加え、縄梓下プロム5
4夕を、氷冷下5℃〜20℃で滴下し、水を加え析出す
るABVN72.5夕を得る。
Add 100% of methanol to the reaction mixture, and add 5% of methanol to the reactant.
ABVN72.5 was added dropwise under ice-cooling at 5°C to 20°C, and water was added to precipitate ABVN72.5.

融点55〜57℃、含量99.5%、ヒドラゾ含量0.
1%(低融点化合物約96%)。
Melting point 55-57°C, content 99.5%, hydrazo content 0.
1% (approximately 96% low melting point compounds).

実施例 3 MBKA59夕に塩化アルミニウム2夕を加え、蝿梓下
、無水状シアン化水素18夕を水冷下1ooo〜35℃
で反応させ1餌時間室温で放置反応させる。
Example 3 Add aluminum chloride for 2 hours to MBKA59 hours, add 18 hours of anhydrous hydrogen cyanide under water cooling at 100 to 35°C.
Allow to react at room temperature for 1 hour.

反応物にメタノール100の‘を加え、灘梓下クロル2
2夕を氷冷下500〜20℃で導入し、水を加えて、析
出するABVN71.5夕を得る。融点53qo〜6び
0、含量99.5%、ヒドラゾ含量0.1%、(低融点
化合物約93%)比較例 MBKA59のこ鷹枠下、無水状シアン化水素23夕を
水冷下1ooo〜3FCで滴下し、5餌時間室温で反応
させる。
Add 100 parts of methanol to the reaction mixture and add 2 parts of Nada Azusa chlorine.
The mixture was introduced at 500 to 20° C. under ice cooling, and water was added to obtain precipitated ABVN71.5. Melting point 53qo~600, content 99.5%, hydrazo content 0.1%, (low melting point compound about 93%) Comparative example MBKA59 Under a saw frame, 23 hours of anhydrous hydrogen cyanide was added dropwise at 1ooo~3FC under water cooling. and react at room temperature for 5 hours.

反応物にメタノール100私を加え、縄梓下クロル22
夕を氷冷下500〜20qo導入し、水を加えて析出す
るABVN斑夕を得る。融点43〜5がo、含量99.
5%、ヒドラゾ含量0.1%(低融点化合物約50%、
高融点化合物約50%)実施例4〜13実施例3に於け
る塩化アルミニウムの代りに各種金属塩類を用いて反応
を行い、処理して得られた結果を次表に示す。
Add 100 parts of methanol to the reaction mixture, and add 22 parts of methanol to the reactant.
500 to 20 qo of ABVN powder is introduced under ice-cooling, and water is added to precipitate ABVN powder. Melting point 43-5 o, content 99.
5%, hydrazo content 0.1% (about 50% low melting point compounds,
High melting point compound (approximately 50%) Examples 4 to 13 Reactions were carried out using various metal salts in place of aluminum chloride in Example 3, and the results obtained are shown in the following table.

Claims (1)

【特許請求の範囲】[Claims] 1 亜鉛、錫、鉄、銅、アルミニウムから成る群から選
ばれた金属の塩の単独または混合の存在下にメチルイソ
ブチルケトアチン(MBKA)とシアン化水素とを反応
させて2,2′−ヒドラゾビス(2,4−ジメチルワレ
ロニトリル)(HBVN)を製造する方法。
1. 2,2'-Hydrazobis(2 , 4-dimethylvaleronitrile) (HBVN).
JP57182352A 1982-10-18 1982-10-18 Method for producing 2,2'-hydrazobis(2,4-dimethylvaleronitrile) Expired JPS6018649B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57182352A JPS6018649B2 (en) 1982-10-18 1982-10-18 Method for producing 2,2'-hydrazobis(2,4-dimethylvaleronitrile)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57182352A JPS6018649B2 (en) 1982-10-18 1982-10-18 Method for producing 2,2'-hydrazobis(2,4-dimethylvaleronitrile)

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50007640A Division JPS5811857B2 (en) 1975-01-17 1975-01-17 Azonitrile bag

Publications (2)

Publication Number Publication Date
JPS5877855A JPS5877855A (en) 1983-05-11
JPS6018649B2 true JPS6018649B2 (en) 1985-05-11

Family

ID=16116805

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57182352A Expired JPS6018649B2 (en) 1982-10-18 1982-10-18 Method for producing 2,2'-hydrazobis(2,4-dimethylvaleronitrile)

Country Status (1)

Country Link
JP (1) JPS6018649B2 (en)

Also Published As

Publication number Publication date
JPS5877855A (en) 1983-05-11

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