JPH07278290A - Preparation of brominated polyphenylene ether - Google Patents

Preparation of brominated polyphenylene ether

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Publication number
JPH07278290A
JPH07278290A JP6843394A JP6843394A JPH07278290A JP H07278290 A JPH07278290 A JP H07278290A JP 6843394 A JP6843394 A JP 6843394A JP 6843394 A JP6843394 A JP 6843394A JP H07278290 A JPH07278290 A JP H07278290A
Authority
JP
Japan
Prior art keywords
brominated
chloride
halogen
polyphenylene ether
polymerization initiator
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
JP6843394A
Other languages
Japanese (ja)
Other versions
JP2622814B2 (en
Inventor
Setsuo Nishibori
節夫 西堀
Kazumi Nishimura
和美 西村
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.)
DKS Co Ltd
Original Assignee
Dai Ichi Kogyo Seiyaku Co Ltd
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Publication date
Application filed by Dai Ichi Kogyo Seiyaku Co Ltd filed Critical Dai Ichi Kogyo Seiyaku Co Ltd
Priority to JP6068433A priority Critical patent/JP2622814B2/en
Publication of JPH07278290A publication Critical patent/JPH07278290A/en
Application granted granted Critical
Publication of JP2622814B2 publication Critical patent/JP2622814B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To provide a process for preparing a brominated polyphenylene ether which can ensure safe operation, is less likely to affect environment, and can provide a polymer having a good hue with a high yield by using a particular halogen-contg. org. compd. as a polymerization initiator. CONSTITUTION:A halogen-contg. org. compd., which becomes cationic in a nitric acid or silver nitrate reaction, is used as a polymerization initiator in the polycondensation of brominated phenolate to prepare brominated polyphenylene ether. Examples of the halogen-contg. org. compd. include organic carboxylic acid halides, such as phthalic acid dichloride and benzoyl chloride, organic phosphoric acid halides, such as diphenylphosphoric acid chloride and diphenyl phosphoric acid chloride, and aliph. and arom. alkyl halides, such as t-butyl bromide and benzal chloride. The amount of the halogen-contg. org. compd. added is usually 0.2 to 18wt.% based on the brominated phenol. Examples of the brominated phenolate include metal salts of tribromophenol to penta-bromophenols.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】[Industrial applications]

【0002】本発明は高分子材料の難燃剤として使用さ
れる臭素化ポリフェニレンエーテルの製法に関するもの
である。
The present invention relates to a method for producing a brominated polyphenylene ether used as a flame retardant for polymeric materials.

【0003】[0003]

【従来の技術】臭素化ポリフェニレンエーテルの製造法
としては、例えば特公昭56−2100号公報に、ペル
オクソ硫酸塩、次亜塩素酸塩、フェリシアン化物、塩化
第二鉄、金属酸化物、ハロゲン等の重合開始剤を使用し
た方法が記載されている。
2. Description of the Related Art As a method for producing brominated polyphenylene ether, for example, Japanese Patent Publication No. 56-2100 discloses a peroxosulfate, hypochlorite, ferricyanide, ferric chloride, metal oxide, halogen, etc. The method of using the polymerization initiator of is described.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、このよ
うな従来の方法にあっては、重合開始剤の効果が充分で
無いため収量が悪い、得られた重合物が褐色に着色し淡
色樹脂には使用できない、現場での製造作業上取り扱い
に危険を伴う、産業廃棄物の観点から製造時の排水処理
が困難である等の問題があった。本発明は、このような
問題点を解決する新規な製法を提供することを課題とす
る。
However, in such a conventional method, the yield of the resulting polymer is poor because the effect of the polymerization initiator is not sufficient. There are problems that it cannot be used, there is a danger of handling it in the field during manufacturing work, and wastewater treatment during manufacturing is difficult from the viewpoint of industrial waste. An object of the present invention is to provide a new manufacturing method that solves such problems.

【0005】[0005]

【課題を解決するための手段】すなわち、本発明は、臭
素化フェノラートを縮重合させて臭素化ポリフェニレン
エーテルを製造するにおいて、重合開始剤として硝酸又
は硝酸銀反応で陽性を呈するハロゲン含有有機化合物
(以下、含ハロゲン化合物と称す)を使用することを特
徴とする臭素化ポリフェニレンエーテルの製法である。
Means for Solving the Problems That is, in the present invention, when a brominated phenolate is polycondensed to produce a brominated polyphenylene ether, a halogen-containing organic compound (hereinafter , A halogen-containing compound) is used for the production of a brominated polyphenylene ether.

【0006】(1)臭素化フェノラート 本発明の臭素化フェノラートとしては、トリブロモフェ
ノールからペンタブロモフェノールまでの臭素化フェノ
ールの金属塩等が挙げられる。
(1) Brominated phenolate Examples of the brominated phenolate of the present invention include metal salts of brominated phenols from tribromophenol to pentabromophenol.

【0007】これらの臭素化フェラートは、あらかじめ
水にアルカリ、例えば水酸化ナトリウムや水酸化カリウ
ムを溶解し、冷却した水溶液に臭素化フェノールを添加
し、加熱するか、又は室温で完全に溶解することによっ
て得られる。この際、溶剤を添加することも可能で、添
加時期は臭素化フェノールの添加前でも、添加後でもよ
い。
These brominated ferrates should be prepared by first dissolving an alkali such as sodium hydroxide or potassium hydroxide in water and adding brominated phenol to a cooled aqueous solution and then heating or completely dissolving it at room temperature. Obtained by At this time, a solvent may be added, and the addition time may be before or after the addition of brominated phenol.

【0008】臭素化フェノールの溶解は、アルカリが過
剰の場合、短時間で溶解できる。得られた溶液は、pH
が12.5以上の場合比較的安定である。それ以下では
重合開始剤がなくても重合が開始することがあるが、反
応時間のコントロ−ルができず、さらに、未反応の臭素
化フェノールが重合物中に残存し、除去するのが困難で
ある。
The brominated phenol can be dissolved in a short time when the alkali is excessive. The resulting solution has a pH
Is 12.5 or more, it is relatively stable. If it is less than that, the polymerization may start without a polymerization initiator, but the reaction time cannot be controlled, and unreacted brominated phenol remains in the polymer and is difficult to remove. Is.

【0009】しかし、アルカリが過剰では、重合開始剤
を消費し非経済であることから、重合開始剤を添加する
直前に酸で中和し、pHを12.5〜9.0、より好ま
しくは10〜11に調整する。
However, when the alkali is excessive, the polymerization initiator is consumed and it is uneconomical. Therefore, the pH is 12.5 to 9.0, more preferably neutralized with an acid immediately before the addition of the polymerization initiator. Adjust to 10-11.

【0010】なお、原料となる臭素化フェノールは、純
分が98重量%以上のものが好ましい。純分が低く、不
純物にフェノール、モノブロモフェノール、ジブロモフ
ェノールを含む場合は縮重合反応が十分に行われない、
あるいは全く行われない場合が生じる。したがって、よ
り好ましくは不純物が1重量%以下である。
The brominated phenol as a raw material preferably has a pure content of 98% by weight or more. If the purity is low and the impurities include phenol, monobromophenol and dibromophenol, the polycondensation reaction will not be carried out sufficiently.
Or the case where it is not performed at all occurs. Therefore, the amount of impurities is more preferably 1% by weight or less.

【0011】(2)重合開始剤 本発明の重合開始剤としては、硝酸、含ハロゲン化合物
等の単独又は二種以上の混合物が挙げられる。
(2) Polymerization initiator As the polymerization initiator of the present invention, nitric acid, a halogen-containing compound and the like may be used alone or in a mixture of two or more kinds.

【0012】含ハロゲン化合物は、有機カルボン酸ハラ
イド、有機燐酸ハライド、脂肪族及び芳香族系アルキル
ハライド等である。
The halogen-containing compound is an organic carboxylic acid halide, an organic phosphoric acid halide, an aliphatic or aromatic alkyl halide or the like.

【0013】有機カルボン酸ハライドは、例えばフタル
酸クロライド、塩化ベンゾイル、臭化ベンゾイル、塩化
p−ブロモベンゾイル、塩化n−ブチリル、イソラク酸
クロライド、ラウリン酸クロライド、2−エチルヘキシ
ル酸クロライド、アクリル酸クロライド、メタクリル酸
クロライド、フェニル酢酸クロライド、塩化クロチル等
であり、有機燐酸ハライドは、例えばフェニルホスホン
酸ジクロライド、ジクレジルホスホン酸クロライド、フ
ェニル燐酸クロライド、ジフェニル燐酸クロライド、キ
シレニル燐酸ジクロライド、ホスホニトリルクロライ
ド、ジプロピル燐酸クロライド、ジクロロプロピル燐酸
ジクロライド、クロロエチル燐酸ジクロライド等であ
り、
Organic carboxylic acid halides include, for example, phthalic acid chloride, benzoyl chloride, benzoyl bromide, p-bromobenzoyl chloride, n-butyryl chloride, isolacic acid chloride, lauric acid chloride, 2-ethylhexyl acid chloride, acrylic acid chloride, Methacrylic acid chloride, phenylacetic acid chloride, crotyl chloride, etc., and organic phosphoric acid halides include, for example, phenylphosphonic acid dichloride, dicresylphosphonic acid chloride, phenylphosphoric acid chloride, diphenylphosphoric acid chloride, xylenylphosphoric acid dichloride, phosphonitrile chloride, dipropylphosphoric acid chloride. , Dichloropropylphosphoric acid dichloride, chloroethylphosphoric acid dichloride, etc.,

【0014】脂肪族及び芳香族系アルキルハライドは、
例えば塩化トリフェニルメチル、塩化p−キシリレン、
塩化3,4−ジメチルベンジル、塩化t−ブチル、臭化
t−ブチル、ヨウ化t−ブチル、塩化ベンサル、クロル
ギ酸メチル、塩化ジフェニルメチル、アリルクロライ
ド、アリルブロマイド、塩化メチルベンジル、エチレン
ブロムヒドリン、ベンジルクロライド、ベンジルブロマ
イド等である。
Aliphatic and aromatic alkyl halides are
For example, triphenylmethyl chloride, p-xylylene chloride,
3,4-Dimethylbenzyl chloride, t-butyl chloride, t-butyl bromide, t-butyl iodide, benzal chloride, methyl chloroformate, diphenylmethyl chloride, allyl chloride, allyl bromide, methylbenzyl chloride, ethylene bromhydrin. , Benzyl chloride, benzyl bromide and the like.

【0015】含ハロゲン化合物が硝酸銀反応で陽性を呈
するか、否かの確認方法は、試料2gを20mlのエタ
ノールに溶解し、次に0.1Nの硝酸銀−エタノール溶
液1mlを加え撹拌混合し、塩化銀が沈殿するか、否か
を確認する。沈殿が生じたものを陽性、沈殿が生じない
ものを陰性と判定する。
To confirm whether or not the halogen-containing compound is positive in the silver nitrate reaction, 2 g of the sample is dissolved in 20 ml of ethanol, then 1 ml of 0.1 N silver nitrate-ethanol solution is added, and the mixture is stirred and mixed to form chloride. Check if silver precipitates. Those with precipitation are judged as positive, and those without precipitation are judged as negative.

【0016】重合開始剤の添加量は、臭素化フェノール
に対して0.2〜18重量%、好ましくは0.2〜10
重量%である。
The amount of the polymerization initiator added is 0.2 to 18% by weight, preferably 0.2 to 10% by weight based on the brominated phenol.
% By weight.

【0017】なお、重合開始剤は、必要に応じて適宜、
水、溶剤等に溶解して使用することもできる。
The polymerization initiator may be appropriately used, if necessary.
It can also be used by dissolving it in water, a solvent or the like.

【0018】重合開始剤を溶解するために使用する溶剤
は、トリブロモフェノール溶解の際に使用するものと同
じでもよく、好ましくは例えばメチレンジクロライド、
クロロホルム、四塩化炭素、ジクロルエタン、トリクロ
ルエチレン、パークロルエチレン、テトラクロルエタン
等のハロゲン化炭化水素類、ベンゼン、トルエン、キシ
レン等の芳香族炭化水素類、ヘキサン等の飽和炭化水素
類、クロルベンゼン等のハロゲン置換炭化水素類、メチ
ルエチルケトン、イソブチルケトン等のケトン類であ
る。これらの溶剤は2種類以上使用することもできる。
なお、溶剤として例示したハロゲン化炭化水素類は、硝
酸銀反応で陰性を示し、重合開始剤としての効果はな
い。
The solvent used for dissolving the polymerization initiator may be the same as that used for dissolving the tribromophenol, preferably, for example, methylene dichloride,
Chloroform, carbon tetrachloride, dichloroethane, trichloroethylene, perchlorethylene, tetrachloroethane and other halogenated hydrocarbons, benzene, toluene, xylene and other aromatic hydrocarbons, hexane and other saturated hydrocarbons, chlorobenzene, etc. The halogen-substituted hydrocarbons, ketones such as methyl ethyl ketone and isobutyl ketone. Two or more kinds of these solvents can be used.
The halogenated hydrocarbons exemplified as the solvent are negative in the silver nitrate reaction and have no effect as a polymerization initiator.

【0019】(3)臭素化ポリフェニレンエーテルの製
法 臭素化フェノラートとして例えばトリブロモフェノラー
トを使用する場合、トリブロモフェノラートの溶液を攪
拌しながら、重合開始剤を単独で又は溶剤に溶解して添
加し、さらに攪拌を続ける。この時の反応温度は特に限
定されないが、トリブロモフェノラ−トが溶解するに必
要な最低温度から反応時に使用される溶剤の沸点以内が
好ましく、さらには重合開始剤の分解を引き延ばすため
に5〜50℃の範囲がより好ましい。反応終了後、生成
した重合物を還元剤で脱色後分離し水洗あるいは溶剤で
洗浄して、目的の臭素化ポリフェニレンエーテルを得
る。なお、精製は、重合物を溶剤に溶解した後、重合物
が不溶のアルコール等の溶剤に添加する再結晶法が好ま
しい。
(3) Method for producing brominated polyphenylene ether When, for example, tribromophenolate is used as the brominated phenolate, the polymerization initiator is added alone or in a solvent while stirring the solution of tribromophenolate. And continue stirring. The reaction temperature at this time is not particularly limited, but it is preferably within the boiling point of the solvent used during the reaction from the minimum temperature required for the tribromophenolate to dissolve, and further, in order to prolong the decomposition of the polymerization initiator, The range of -50 ° C is more preferable. After completion of the reaction, the produced polymer is decolorized with a reducing agent, separated, and washed with water or a solvent to obtain the desired brominated polyphenylene ether. The purification is preferably performed by a recrystallization method in which the polymer is dissolved in a solvent and then added to a solvent such as alcohol in which the polymer is insoluble.

【0020】(4)その他の添加剤等 本発明においては、必要に応じて適宜、分散剤等の界面
活性剤、樹脂添加剤、安定剤、無機物等も併用すること
ができる。
(4) Other Additives, etc. In the present invention, a surfactant such as a dispersant, a resin additive, a stabilizer, an inorganic substance and the like can be used in combination, if necessary.

【0021】[0021]

【実施例】次に、本発明を実施例により説明するが、本
発明はかかる実施例のみに限定されるものではない。な
お、実施例に示す『%』は、重量%で表す。
EXAMPLES The present invention will now be described with reference to examples, but the present invention is not limited to these examples. In addition, "%" shown in the examples is represented by% by weight.

【0022】実施例1.水200gに、水酸化ナトリウ
ム25.7g(0.643mol)を溶解し、トリブト
モフェノール(以下、TBPとも称す)212.3g
(0.641mol)加え、完全に溶解する。この溶液
10gを20mlの試験管に計り取り、試験管撹拌装置
で撹拌しながら、各種の重合開始剤を単独で又は溶剤に
溶かし10%溶液にして所定量添加する。その後20分
間撹拌を続け、水酸化ナトリウム5%水溶液10mlを
添加し、生成した重合物を濾別し水洗後乾燥して目的物
を得た。同様に比較実験も行った。結果を表1に示す。
Example 1. Sodium hydroxide 25.7 g (0.643 mol) is dissolved in water 200 g, and tributomophenol (hereinafter also referred to as TBP) 212.3 g
(0.641 mol) is added, and it is completely dissolved. 10 g of this solution is weighed into a 20 ml test tube, and various polymerization initiators are dissolved alone or in a solvent to make a 10% solution while stirring with a test tube stirring device, and a predetermined amount is added. Then, stirring was continued for 20 minutes, 10 ml of a 5% aqueous solution of sodium hydroxide was added, and the produced polymer was separated by filtration, washed with water and dried to obtain the desired product. Similarly, a comparative experiment was conducted. The results are shown in Table 1.

【0023】なお、収率は、トリブロモフェノールがす
べて重合してポリ(ジブロムフェニレンエーテル)に変
化した際の収率を100%として算出した。以下同じ。
The yield was calculated with 100% as the yield when all the tribromophenol was polymerized and changed to poly (dibromophenylene ether). same as below.

【0024】[0024]

【表1】 [Table 1]

【0025】実施例2.フラスコに、水200g、水酸
化ナトリウム26.5g(0.663mol)加え、撹
拌しながら溶解する。つぎに、トリブロモフェノール2
12.3g(0.641mol)加え、30〜40℃で
溶解する。その後、塩酸でpH=10.5に調整し、2
0℃まで冷却し、20〜30℃の範囲で重合開始剤を所
定量添加する。添加数分後に重合物が生成し始め3時間
保持し、水酸化ナトリウム26%水溶液を加え、pH=
12以上に調整し、重合物を濾別する。つぎに重合物に
iso−ブチルアルコール300mlを加え撹拌する。
さらにヒドラジン80%水溶液1.5ml加え、還流温
度で1時間還元脱色する。つぎに30℃以下まで冷却
し、重合物を濾別し乾燥して目的物を得た。同様に比較
実験も行った。結果を表2に示す。
Example 2. 200 g of water and 26.5 g (0.663 mol) of sodium hydroxide are added to the flask and dissolved with stirring. Next, tribromophenol 2
Add 12.3 g (0.641 mol) and dissolve at 30-40 ° C. After that, adjust the pH to 10.5 with hydrochloric acid and adjust to 2
After cooling to 0 ° C, a predetermined amount of a polymerization initiator is added within the range of 20 to 30 ° C. A few minutes after the addition, a polymer starts to be formed and is kept for 3 hours, and a 26% aqueous solution of sodium hydroxide is added to adjust the pH =
Adjust to 12 or more and filter the polymer. Next, 300 ml of iso-butyl alcohol is added to the polymer and stirred.
Further, 1.5 ml of 80% aqueous hydrazine solution is added, and the mixture is subjected to reductive decolorization at reflux temperature for 1 hour. Next, it was cooled to 30 ° C. or lower, the polymer was separated by filtration and dried to obtain the desired product. Similarly, a comparative experiment was conducted. The results are shown in Table 2.

【0026】なお、色相(GNo)は、20wt/v%
のクロロホルム溶液で測定した。耐熱色相(GNo)
は、重合物を300℃×30分間加熱後2wt/v%の
クロロホルム溶液で測定した。以下同じ
Hue (GNo) is 20 wt / v%
Was measured with a chloroform solution of. Heat resistant hue (GNo)
Was measured with a 2 wt / v% chloroform solution after heating the polymer at 300 ° C. for 30 minutes. same as below

【0027】[0027]

【表2】 [Table 2]

【0028】実施例3.フラスコに、水150g、水酸
化カリウム43g(0.766mol)を加え溶解す
る。次に、40℃以下で塩化メチレン250g、トリブ
ロモフェノール200g(0.604mol)、ペンタ
ブロモフェノール50g(0.102mol)を加え溶
解する。さらに硫酸を加え、pH=10に調整し、10
〜35℃で重合開始剤としてトルエン50%溶液5gを
15分間かけて滴下する。その後、3時間保持し、水酸
化ナトリウム48%水溶液2mlとヒドラジン80%水
溶液1mlを加え2時間脱色する。静置分離し、下層の
油相をメタノール1000ml中へ滴下し、重合物を分
別する。乾燥後、目的物を得た。同様に比較実験も行っ
た。結果を表3に示す。
Example 3. To the flask, 150 g of water and 43 g (0.766 mol) of potassium hydroxide are added and dissolved. Next, 250 g of methylene chloride, 200 g (0.604 mol) of tribromophenol and 50 g (0.102 mol) of pentabromophenol are added and dissolved at 40 ° C. or lower. Further add sulfuric acid to adjust the pH to 10 and adjust to 10
At −35 ° C., 5 g of 50% toluene solution as a polymerization initiator is added dropwise over 15 minutes. Then, the mixture is maintained for 3 hours, and 2 ml of 48% aqueous sodium hydroxide solution and 1 ml of 80% hydrazine aqueous solution are added to decolor for 2 hours. The mixture is allowed to stand, and the lower oil phase is added dropwise to 1000 ml of methanol to separate the polymer. After drying, the target product was obtained. Similarly, a comparative experiment was conducted. The results are shown in Table 3.

【0029】なお、収率は、収量192.8gを収率1
00%として計算した。外観色相は肉眼で判定した。
The yield is 192.8 g and the yield is 1.
Calculated as 00%. The appearance hue was visually judged.

【0030】[0030]

【表3】 [Table 3]

【0031】実施例4.フラスコに、水600g、水酸
化ナトリウム79.5g(1.99mol)を加え、撹
拌しながら溶解する。つぎに、トリブロモフェノール6
37g(1.92mol)を加え、40〜50℃で溶解
する。その後、硫酸でpH=11.5に調整し、20℃
まで冷却し、20〜30℃の範囲で重合開始剤(1)1
5gを添加する。添加数分後に重合物が生成し始め、2
時間保持する。次いで、重合開始剤(2)4.5gをト
ルエン15gに溶解して添加し1時間後に、徐々に45
℃まで昇温する。次に45℃でトリエチルアミン0.5
gとヒドラジン80%水溶液5gを加え、さらに昇温し
80〜90℃で2時間還元脱色する。その後、40℃迄
冷却し、水酸化ナトリウム26%水溶液を加えpH=1
2以上に調整し、遠心分離機で重合物を濾別、乾燥して
目的物を得る。同様に比較実験も行った。結果を表4に
示す。
Example 4. 600 g of water and 79.5 g (1.99 mol) of sodium hydroxide are added to the flask and dissolved with stirring. Next, tribromophenol 6
Add 37 g (1.92 mol) and dissolve at 40-50 ° C. After that, adjust to pH = 11.5 with sulfuric acid, and 20 ℃
And the polymerization initiator (1) 1 in the range of 20 to 30 ° C.
Add 5 g. Polymers started to form a few minutes after the addition, 2
Hold for time. Then, 4.5 g of the polymerization initiator (2) was dissolved in 15 g of toluene and added, and after 1 hour, gradually added to 45 g.
Raise the temperature to ℃. Then at 45 ° C. triethylamine 0.5
g and 5 g of 80% hydrazine aqueous solution are added, and the temperature is further raised to carry out reductive decolorization at 80 to 90 ° C. for 2 hours. After that, it is cooled to 40 ° C., a 26% aqueous solution of sodium hydroxide is added, and the pH is 1
After adjusting to 2 or more, the polymer is separated by filtration with a centrifuge and dried to obtain the desired product. Similarly, a comparative experiment was conducted. The results are shown in Table 4.

【0032】なお、遠心分離機内の重合物は、水300
gとメタノール300gを振りかけ洗浄する。
The polymer in the centrifuge is water 300
and 300 g of methanol are sprinkled and washed.

【0033】[0033]

【表4】 [Table 4]

【0034】[0034]

【発明の効果】本発明の臭素化ポリフェニレンエーテル
の製法は、作業上安全で、且つ環境問題への影響が少な
い製法で、色相の良い重合物が高収率で得られる。
INDUSTRIAL APPLICABILITY The process for producing a brominated polyphenylene ether of the present invention is a process that is safe in operation and has little influence on environmental problems, and a polymer having a good hue can be obtained in a high yield.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 臭素化フェノラートを縮重合させて臭素
化ポリフェニレンエーテルを製造するにおいて、重合開
始剤として硝酸又は硝酸銀反応で陽性を呈するハロゲン
含有有機化合物を使用することを特徴とする臭素化ポリ
フェニレンエーテルの製法。
1. A brominated polyphenylene ether characterized by using a halogen-containing organic compound which is positive in a nitric acid or silver nitrate reaction as a polymerization initiator in the production of a brominated polyphenylene ether by polycondensing a brominated phenolate. Manufacturing method.
【請求項2】 重合開始剤の添加量が、臭素化フェノー
ルに対して0.2〜18重量%である請求項1記載の臭
素化ポリフェニレンエーテルの製法。
2. The method for producing a brominated polyphenylene ether according to claim 1, wherein the amount of the polymerization initiator added is 0.2 to 18% by weight based on the brominated phenol.
JP6068433A 1994-04-06 1994-04-06 Preparation of brominated polyphenylene ether Expired - Lifetime JP2622814B2 (en)

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Application Number Priority Date Filing Date Title
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JP2622814B2 JP2622814B2 (en) 1997-06-25

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Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7550551B2 (en) 2006-08-22 2009-06-23 Chemtura Corporation Brominated flame retardant
CN105968344A (en) * 2016-07-08 2016-09-28 潍坊日兴化工有限公司 Synthetic method of bromide polyphenylene oxide
CN106188530A (en) * 2016-07-22 2016-12-07 潍坊玉成化工有限公司 A kind of preparation method of brominated polyphenylether
CN108456304A (en) * 2018-02-22 2018-08-28 潍坊玉成化工有限公司 A kind of preparation method and applications of Noryl

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041093A (en) * 1984-07-06 1985-03-04 日本電気株式会社 Indication of plasma display panel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041093A (en) * 1984-07-06 1985-03-04 日本電気株式会社 Indication of plasma display panel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7550551B2 (en) 2006-08-22 2009-06-23 Chemtura Corporation Brominated flame retardant
US7718756B2 (en) 2006-08-22 2010-05-18 Chemtura Corporation Brominated flame retardant
CN105968344A (en) * 2016-07-08 2016-09-28 潍坊日兴化工有限公司 Synthetic method of bromide polyphenylene oxide
CN105968344B (en) * 2016-07-08 2018-10-12 山东日兴新材料股份有限公司 A kind of synthetic method of brominated polyphenylether
CN106188530A (en) * 2016-07-22 2016-12-07 潍坊玉成化工有限公司 A kind of preparation method of brominated polyphenylether
CN108456304A (en) * 2018-02-22 2018-08-28 潍坊玉成化工有限公司 A kind of preparation method and applications of Noryl

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