JPH0443058B2 - - Google Patents

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Publication number
JPH0443058B2
JPH0443058B2 JP15617483A JP15617483A JPH0443058B2 JP H0443058 B2 JPH0443058 B2 JP H0443058B2 JP 15617483 A JP15617483 A JP 15617483A JP 15617483 A JP15617483 A JP 15617483A JP H0443058 B2 JPH0443058 B2 JP H0443058B2
Authority
JP
Japan
Prior art keywords
solvent
acp
aromatic hydrocarbons
bisphenol
aliphatic ketones
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
JP15617483A
Other languages
Japanese (ja)
Other versions
JPS6048941A (en
Inventor
Haruhisa Harada
Toshio Kawakita
Masashi Araki
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP15617483A priority Critical patent/JPS6048941A/en
Publication of JPS6048941A publication Critical patent/JPS6048941A/en
Publication of JPH0443058B2 publication Critical patent/JPH0443058B2/ja
Granted legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Epoxy Resins (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は、1,1−ビス−(4−ヒドロキシフ
エニル)−1−フエニルエタンの精製方法に関す
るものである。更に詳しくは、粗1,1−ビス−
(4−ヒドロキシフエニル)−1−フエニルエタン
を芳香族炭化水素類と脂肪族ケトン類の混合溶媒
にて再結晶することを特徴とする1,1−ビス−
(4−ヒドロキシフエニル)−1−フエニルエタン
の精製方法に関する。 1,1−ビス−(4−ヒドロキシフエニル)−1
−フエニルエタン(以下、ビスフエノールACP
と略す)は、エポキシ樹脂、ポリエステル樹脂、
ポリカーボネート樹脂の原料として、又、フエノ
ール樹脂改質剤、安定剤として有用な化合物であ
る。これら用途に於いて、ビスフエノールACP
は、高純度を要求されている。かかる要求に対
し、粗ビスフエノールACPを、再結晶にて精製
しようとする検討は種々なされている。例えば、
Ger.Offen.2948222号によれば、再結晶溶媒とし
て1,2−ジクロルエタンを用いているが、ビス
フエノールACPの溶解度が小さく、溶媒効率が
低いという欠点を有していた。又、U.S.
P.4300000号によれば、ビスフエノールAの再結
晶に水−メタノール混合溶媒を用いる方法が提案
されているが、この系をビスフエノールACPに
適用してもタール成分(GPC(ゲルパーミネーシ
ヨンクロマトグラフ)分析における4量体以上の
成分)、及び着色成分が十分に除去できないとい
う欠点を有していた。 そこで、本発明者らは、溶媒効率が高く、しか
もタール分及び着色成分等の不純物が完全に除去
できうる溶媒を見い出すことを目的として、脱意
検討した結果、本発明に致つた。すなわち、本発
明は、粗1,1−ビス−(4−ヒドロキシフエニ
ル)−1−フエニルエタンを芳香族炭化水素類と
脂肪族ケトン類の混合溶媒にて再結晶することを
特徴とする1,1−ビス−(4−ヒドロキシフエ
ニル)−1−フエニルエタンの精製方法である。 本発明に用いられる工業的に入手が容易で、安
価であり、溶媒の回収の容易さ等の観点から望ま
しい芳香族炭化水素類としてベンゼン、トルエ
ン、キシレン、エチルベンゼン、クメン等が挙げ
られる。又、望ましい脂肪族ケトン類としてアセ
トン、メチルエチルケトン、ジエチルケトン、メ
チルイソブチルケトン等が挙げられる。 本発明に於いては、これら芳香族炭化水素類
と、脂肪族ケトン類の組合せは任意であり、か
つ、複数の組合せでも使用可能である。しかし、
望ましくは、芳香族炭化水素類より選ばれる1種
の芳香族炭化水素と、脂肪族ケトン類より選ばれ
る1種の脂肪族ケトンの組合せが選ばれる。又、
さらに好ましくは、脂肪族ケトン類より選ばれる
1種の脂肪族ケトンの沸点が、芳香族炭化水素類
より選ばれる1種の芳香族炭化水素の沸点と同
等、又は、低い組合せが選ばれる。 このような組合せを選ぶことにより、溶媒の一
部を蒸留等により、留去させて、ビスフエノール
ACPの溶解度を下げ、実質的に過収量を増加
させることが容易になる。脂肪族ケトン類と芳香
族炭化水素類の混合割合は、その組合せによつて
異なり、通常脂肪族ケトン類の混合割合として2
〜30重量%が選ばれるが、特に好ましくは3〜20
重量%が選ばれる。脂肪族ケトン類の混合割合が
2重量%未満だと、ビスフエノールACPの溶解
度は低く、溶媒効率が低くなる傾向にある。又、
脂肪族ケトン類の混合割合が30重量%を上回る
と、逆にビスフエノールACPの溶解度が著しく
増加し、冷却時に於けるビスフエノールACPの
析出率が抵下する傾向にある。本発明に於ける操
作温度範囲は、特に限定されるものではないが、
通常、混合溶媒のその圧力下における沸点近くか
ら室温近くが選ばれる。又、沸点近くから、室温
近くまでの冷却速度は任意である。 本発明で対象となる粗ビスフエノールACPと
は、いかなる方法によつて製造されたものでもよ
い。 以下、本発明を実施例にてさらに詳細に説明す
るが、本発明はこれらによつて何ら限定されるも
のではない。 実施例 1 アセトフエノンとフエノールを塩化亜鉛、及び
塩酸ガスの共存下、反応温度60℃にて、48時間反
応させて得られた反応液を温水にて洗浄した后、
さらに、未反応のフエノール、アセトフエノンを
蒸留によつて留去して得られる粗ビスフエノール
ACPの純度は表−1に示すものであつた。
The present invention relates to a method for purifying 1,1-bis-(4-hydroxyphenyl)-1-phenylethane. More specifically, crude 1,1-bis-
1,1-bis- characterized by recrystallizing (4-hydroxyphenyl)-1-phenylethane in a mixed solvent of aromatic hydrocarbons and aliphatic ketones.
The present invention relates to a method for purifying (4-hydroxyphenyl)-1-phenylethane. 1,1-bis-(4-hydroxyphenyl)-1
-Phenylethane (hereinafter referred to as bisphenol ACP)
) are epoxy resins, polyester resins,
It is a compound useful as a raw material for polycarbonate resin, and as a phenolic resin modifier and stabilizer. In these applications, bisphenol ACP
requires high purity. In response to such demands, various studies have been made to purify crude bisphenol ACP by recrystallization. for example,
According to Ger. Offen. 2948222, 1,2-dichloroethane is used as a recrystallization solvent, but it has the drawbacks of low solubility of bisphenol ACP and low solvent efficiency. Also, US
P.4300000 proposes a method using a water-methanol mixed solvent for recrystallization of bisphenol A, but even if this system is applied to bisphenol ACP, the tar component (GPC (gel permination) It had the disadvantage that it could not sufficiently remove components of tetramer or higher in chromatographic analysis) and colored components. Therefore, the inventors of the present invention conducted a thorough investigation with the aim of finding a solvent that has high solvent efficiency and can completely remove impurities such as tar and coloring components, and as a result, they have arrived at the present invention. That is, the present invention is characterized in that crude 1,1-bis-(4-hydroxyphenyl)-1-phenylethane is recrystallized in a mixed solvent of aromatic hydrocarbons and aliphatic ketones. This is a method for purifying 1-bis-(4-hydroxyphenyl)-1-phenylethane. Desirable aromatic hydrocarbons used in the present invention from the viewpoint of being industrially easily available, inexpensive, and easy to recover the solvent include benzene, toluene, xylene, ethylbenzene, cumene, and the like. Further, preferable aliphatic ketones include acetone, methyl ethyl ketone, diethyl ketone, methyl isobutyl ketone and the like. In the present invention, any combination of these aromatic hydrocarbons and aliphatic ketones may be used, and a plurality of combinations may also be used. but,
Desirably, a combination of one type of aromatic hydrocarbon selected from aromatic hydrocarbons and one type of aliphatic ketone selected from aliphatic ketones is selected. or,
More preferably, a combination is selected in which the boiling point of one type of aliphatic ketone selected from aliphatic ketones is equal to or lower than the boiling point of one type of aromatic hydrocarbon selected from aromatic hydrocarbons. By choosing such a combination, a part of the solvent can be distilled off to produce bisphenol.
It becomes easier to lower the solubility of ACP and substantially increase the overyield. The mixing ratio of aliphatic ketones and aromatic hydrocarbons varies depending on the combination, and the mixing ratio of aliphatic ketones is usually 2.
-30% by weight is selected, particularly preferably 3-20%
The weight percentage is chosen. If the mixing ratio of aliphatic ketones is less than 2% by weight, the solubility of bisphenol ACP will be low and the solvent efficiency will tend to be low. or,
When the mixing ratio of aliphatic ketones exceeds 30% by weight, the solubility of bisphenol ACP increases significantly, and the precipitation rate of bisphenol ACP during cooling tends to decrease. The operating temperature range in the present invention is not particularly limited, but
Usually, the temperature is selected from around the boiling point of the mixed solvent under that pressure to around room temperature. Further, the cooling rate from near the boiling point to near room temperature is arbitrary. The crude bisphenol ACP that is the object of the present invention may be produced by any method. EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto. Example 1 Acetophenone and phenol were reacted in the coexistence of zinc chloride and hydrochloric acid gas at a reaction temperature of 60°C for 48 hours, and the resulting reaction solution was washed with warm water.
Furthermore, crude bisphenol obtained by distilling off unreacted phenol and acetophenone
The purity of ACP was as shown in Table 1.

【表】 量体以上の成分
得られた粗ビスフエノールACP100gを、10重
量%メチルイソブチルケトン含有トルエン溶媒に
温度100℃で溶解させた所、必要溶媒量は500gで
あつた。溶解液を約20℃まで冷却し、析出した結
晶を過し、冷溶媒でリンスした后、真空乾燥
(120℃,24時間)した所、ビスフエノールACP
として、67.5gを得た。従つて溶媒効率は13.5%
析出率67.5%であつた。又、得られた精製ビスフ
エノールACPの組成を表−2に示した。 実施例 2 実施例1と同様の粗ビスフエノールACP100g
を5重量%アセトン含有トルエン溶媒に、温度80
℃で溶解させた所、必要溶媒量は350gであつた。
溶解液を約20℃まで冷却し、析出した結晶を実施
例1と同様に、后処理することによつて精製ビス
フエノールACP65.2gを得た。従つて溶媒効率
18.6%、析出率65.2%であつた。得られた精製ビ
スフエノールACPの組成を表−2に示した。 実施例 3 実施例1と同様の粗ビスフエノールACP100g
を、5重量%アセトン含有トルエン溶媒に、温度
80℃で溶解させた所、必要溶媒量は350gであつ
た。この溶解液からアセトンを17.0gを留去した
后、約20℃まで冷却し、析出した結晶を実施例1
と同様に、后処理することによつて精製ビスフエ
ノールACP91.4gを得た。従つて溶媒効率26.1
%、析出率91.4%であつた。又、得られた精製ビ
スフエノールACPの組成を表−2に示した。 比較例 1 実施例1と同様の粗ビスフエノールACP100g
を、1,2−ジクロルエタンに、温度80℃で溶解
させた所、必要溶媒量は1200gであつた。溶解液
を約20℃まで冷却し、析出した結晶を実施例1と
同様に、后処理することによつて精製ビスフエノ
ールACP64.1gを得た。従つて、溶媒効率5.3%、
析出率64.1%であつた。得られた精製ビスフエノ
ールACPの組成を表−2に示した。 比較例 2 実施例1と同様の粗ビスフエノールACP100g
を、水−メタノール(1:1)混合溶媒に、温度
70℃で溶解させた所、必要溶媒量は400gであつ
た。溶解液を約20℃まで冷却し、析出した結晶を
実施例1と同様に後処理することによつて精製ビ
スフエノールACP約90.0gを得た。従つて溶媒効
率22.5%析出率90%であつた。得られた精製ビス
フエノールACPの組成を表−2に示した。 以上、表−2に示す結果より、明らかな様に本
発明に於ける混合溶媒の効果が著しく良好である
事が分かる。
[Table] Components larger than mer 100 g of the obtained crude bisphenol ACP was dissolved in a toluene solvent containing 10% by weight of methyl isobutyl ketone at a temperature of 100°C, and the required amount of solvent was 500 g. The solution was cooled to about 20°C, the precipitated crystals were filtered, rinsed with a cold solvent, and then dried in vacuum (120°C, 24 hours) to form bisphenol ACP.
67.5g was obtained. Therefore the solvent efficiency is 13.5%
The precipitation rate was 67.5%. The composition of the purified bisphenol ACP obtained is shown in Table 2. Example 2 100 g of crude bisphenol ACP similar to Example 1
in a toluene solvent containing 5% by weight of acetone at a temperature of 80°C.
When dissolved at ℃, the required amount of solvent was 350 g.
The solution was cooled to about 20° C., and the precipitated crystals were treated in the same manner as in Example 1 to obtain 65.2 g of purified bisphenol ACP. Therefore solvent efficiency
The precipitation rate was 18.6% and the precipitation rate was 65.2%. The composition of the purified bisphenol ACP obtained is shown in Table 2. Example 3 100 g of crude bisphenol ACP similar to Example 1
into a toluene solvent containing 5% by weight of acetone at a temperature of
When dissolved at 80°C, the required amount of solvent was 350g. After distilling off 17.0 g of acetone from this solution, it was cooled to about 20°C, and the precipitated crystals were collected in Example 1.
By post-treatment in the same manner as above, 91.4 g of purified bisphenol ACP was obtained. Therefore the solvent efficiency is 26.1
%, and the precipitation rate was 91.4%. The composition of the purified bisphenol ACP obtained is shown in Table 2. Comparative Example 1 100 g of crude bisphenol ACP similar to Example 1
was dissolved in 1,2-dichloroethane at a temperature of 80°C, and the required amount of solvent was 1200g. The solution was cooled to about 20° C., and the precipitated crystals were treated in the same manner as in Example 1 to obtain 64.1 g of purified bisphenol ACP. Therefore, the solvent efficiency is 5.3%,
The precipitation rate was 64.1%. The composition of the purified bisphenol ACP obtained is shown in Table 2. Comparative Example 2 100g of crude bisphenol ACP similar to Example 1
into a water-methanol (1:1) mixed solvent at a temperature of
When dissolved at 70°C, the required amount of solvent was 400g. The solution was cooled to about 20° C., and the precipitated crystals were post-treated in the same manner as in Example 1 to obtain about 90.0 g of purified bisphenol ACP. Therefore, the solvent efficiency was 22.5% and the precipitation rate was 90%. The composition of the purified bisphenol ACP obtained is shown in Table 2. From the results shown in Table 2 above, it is clear that the effect of the mixed solvent in the present invention is extremely good.

【表】【table】

【表】【table】

Claims (1)

【特許請求の範囲】 1 粗1,1−ビス−(4−ヒドロキシフエニル)
−1−フエニルエタンを芳香族炭化水素類と脂肪
族ケトン類の混合溶媒にて再結晶することを特徴
とする1,1−ビス−(4−ヒドロキシフエニル)
−1−フエニルエタンの精製方法。 2 芳香族炭化水素類の沸点と同等の沸点、又は
低い沸点を有する脂肪族ケトン類を芳香族炭化水
素類と混合した溶媒を用いることを特徴とする特
許請求の範囲第1項記載の方法。 3 芳香族炭化水素類がベンゼン、トルエン、キ
シレン、エチルベンゼン、クメン、から選ばれる
1種又は2種以上であることを特徴とする特許請
求の範囲第1項記載の方法。 4 脂肪族ケトン類が、アセトン、メチルエチル
ケトン、ジエチルケトン、メチルイソブチルケト
ンから選ばれる1種、又は2種以上であることを
特徴とする特許請求の範囲第1項記載の方法。 5 脂肪族ケトン類含有割合が2〜30重量%の混
合溶媒を用いることを特徴とする特許請求の範囲
第1項記載の方法。
[Claims] 1 Crude 1,1-bis-(4-hydroxyphenyl)
-1,1-bis-(4-hydroxyphenyl) obtained by recrystallizing 1-phenylethane in a mixed solvent of aromatic hydrocarbons and aliphatic ketones.
- A method for purifying 1-phenylethane. 2. The method according to claim 1, characterized in that a solvent in which an aliphatic ketone having a boiling point equal to or lower than the boiling point of the aromatic hydrocarbons is mixed with the aromatic hydrocarbons is used. 3. The method according to claim 1, wherein the aromatic hydrocarbons are one or more selected from benzene, toluene, xylene, ethylbenzene, and cumene. 4. The method according to claim 1, wherein the aliphatic ketones are one or more selected from acetone, methyl ethyl ketone, diethyl ketone, and methyl isobutyl ketone. 5. The method according to claim 1, characterized in that a mixed solvent containing 2 to 30% by weight of aliphatic ketones is used.
JP15617483A 1983-08-25 1983-08-25 Purification of 1,1-bis-(4-hydroxyphenyl)-1-phenylethane Granted JPS6048941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15617483A JPS6048941A (en) 1983-08-25 1983-08-25 Purification of 1,1-bis-(4-hydroxyphenyl)-1-phenylethane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15617483A JPS6048941A (en) 1983-08-25 1983-08-25 Purification of 1,1-bis-(4-hydroxyphenyl)-1-phenylethane

Publications (2)

Publication Number Publication Date
JPS6048941A JPS6048941A (en) 1985-03-16
JPH0443058B2 true JPH0443058B2 (en) 1992-07-15

Family

ID=15621967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15617483A Granted JPS6048941A (en) 1983-08-25 1983-08-25 Purification of 1,1-bis-(4-hydroxyphenyl)-1-phenylethane

Country Status (1)

Country Link
JP (1) JPS6048941A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101040700B1 (en) * 2006-11-16 2011-06-10 주식회사 엘지화학 Purification method of terephthalaldehyde

Also Published As

Publication number Publication date
JPS6048941A (en) 1985-03-16

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