COMPOSITION CONTAINING C8F17Br AND METHOD FOR PRODUCING C8F17Br
Provided are: a composition containing PFOB, which has lower PFOA content than conventional PFOBs and is not likely to have adverse effects on the environment; and a method for producing PFOB. A composition which contains C8F17Br, while additionally containing C7F15COOH, and wherein the content of C...
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| Main Authors | , , |
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| Format | Patent |
| Language | English French Japanese |
| Published |
10.01.2019
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| Subjects | |
| Online Access | Get full text |
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| Abstract | Provided are: a composition containing PFOB, which has lower PFOA content than conventional PFOBs and is not likely to have adverse effects on the environment; and a method for producing PFOB. A composition which contains C8F17Br, while additionally containing C7F15COOH, and wherein the content of C7F15COOH is 25 ppb or less relative to the total weight of C8F17Br. A method for producing C8F17Br according to the present invention comprises: a step for obtaining C8F17Br by a reaction between C8F17I and a brominating agent; and a step for subjecting the thus-obtained C8F17Br to alkaline cleaning, thereby reducing the content of C7F15COOH to 25 ppb or less relative to the total weight of C8F17Br.
L'invention concerne : une composition contenant du PFOB, qui a un contenu PFOA inférieur à celui des PFOB classiques et n'est pas susceptible d'avoir des effets défavorables sur l'environnement; et un procédé de production de PFOB. L'invention concerne une composition contenant du C8F17Br, tout en contenant en outre du C7F15COOH, et la teneur en C7F15COOH étant inférieure ou égale à 25 ppb par rapport au poids total de C8F17Br. L'invention concerne également un procédé de production de C8F17Br comprenant : une étape consistant à obtenir du C8F17Br par une réaction entre C8F17I et un agent de bromation; et une étape consistant à soumettre le C8F17Br ainsi obtenu à un nettoyage alcalin, ce qui permet de réduire la teneur en C7F15COOH à 25 ppb ou moins par rapport au poids total de C8F17Br.
ＰＦＯＡの含有量が従来のＰＦＯＢよりも少なく、環境に悪影響を与えにくいＰＦＯＢを含む組成物及びＰＦＯＢの製造方法を提供する。 Ｃ８Ｆ１７Ｂｒを含む組成物であって、Ｃ７Ｆ１５ＣＯＯＨをさらに含有し、Ｃ７Ｆ１５ＣＯＯＨの含有量がＣ８Ｆ１７Ｂｒの全重量に対して２５ｐｐｂ以下である。Ｃ８Ｆ１７Ｂｒの製造方法は、Ｃ８Ｆ１７Ｉと臭素化剤との反応によりＣ８Ｆ１７Ｂｒを得る工程、及び、得られたＣ８Ｆ１７Ｂｒをアルカリ洗浄することでＣ７Ｆ１５ＣＯＯＨの含有量をＣ８Ｆ１７Ｂｒの全重量に対して２５ｐｐｂ以下に低減する工程を備える。 |
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| AbstractList | Provided are: a composition containing PFOB, which has lower PFOA content than conventional PFOBs and is not likely to have adverse effects on the environment; and a method for producing PFOB. A composition which contains C8F17Br, while additionally containing C7F15COOH, and wherein the content of C7F15COOH is 25 ppb or less relative to the total weight of C8F17Br. A method for producing C8F17Br according to the present invention comprises: a step for obtaining C8F17Br by a reaction between C8F17I and a brominating agent; and a step for subjecting the thus-obtained C8F17Br to alkaline cleaning, thereby reducing the content of C7F15COOH to 25 ppb or less relative to the total weight of C8F17Br.
L'invention concerne : une composition contenant du PFOB, qui a un contenu PFOA inférieur à celui des PFOB classiques et n'est pas susceptible d'avoir des effets défavorables sur l'environnement; et un procédé de production de PFOB. L'invention concerne une composition contenant du C8F17Br, tout en contenant en outre du C7F15COOH, et la teneur en C7F15COOH étant inférieure ou égale à 25 ppb par rapport au poids total de C8F17Br. L'invention concerne également un procédé de production de C8F17Br comprenant : une étape consistant à obtenir du C8F17Br par une réaction entre C8F17I et un agent de bromation; et une étape consistant à soumettre le C8F17Br ainsi obtenu à un nettoyage alcalin, ce qui permet de réduire la teneur en C7F15COOH à 25 ppb ou moins par rapport au poids total de C8F17Br.
ＰＦＯＡの含有量が従来のＰＦＯＢよりも少なく、環境に悪影響を与えにくいＰＦＯＢを含む組成物及びＰＦＯＢの製造方法を提供する。 Ｃ８Ｆ１７Ｂｒを含む組成物であって、Ｃ７Ｆ１５ＣＯＯＨをさらに含有し、Ｃ７Ｆ１５ＣＯＯＨの含有量がＣ８Ｆ１７Ｂｒの全重量に対して２５ｐｐｂ以下である。Ｃ８Ｆ１７Ｂｒの製造方法は、Ｃ８Ｆ１７Ｉと臭素化剤との反応によりＣ８Ｆ１７Ｂｒを得る工程、及び、得られたＣ８Ｆ１７Ｂｒをアルカリ洗浄することでＣ７Ｆ１５ＣＯＯＨの含有量をＣ８Ｆ１７Ｂｒの全重量に対して２５ｐｐｂ以下に低減する工程を備える。 |
| Author | YAMAMOTO, Yoshihiro HIGASHI, Masahiro KUROKI, Yoshichika |
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| DocumentTitleAlternate | COMPOSITION CONTENANT C8F17Br ET PROCÉDÉ DE PRODUCTION DE C8F17Br Ｃ８Ｆ１７Ｂｒを含む組成物及びＣ８Ｆ１７Ｂｒの製造方法 |
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| RelatedCompanies | DAIKIN INDUSTRIES, LTD |
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| Title | COMPOSITION CONTAINING C8F17Br AND METHOD FOR PRODUCING C8F17Br |
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