发明名称 |
METHOD OF PURIFYING PERFLUORODECALIN |
摘要 |
FIELD: chemistry.SUBSTANCE: method includes crystallising perfluorodecalin in two steps: at the first step, crystallisation is carried out while reducing the temperature to minus 17°C - minus 18°C at a rate of 1-2°C per minute while stirring; the mass is held at a temperature of minus 17°C - minus 18°C for 30-35 minutes, filtered and dried and the obtained crystals are separated; the crystals are then melted at ambient temperature; at the second step crystallisation is repeated at the same conditions, but while reducing temperature to minus 15°C. The product obtained using the present method has purity higher than 99 wt %.EFFECT: high purity of the finished product.6 ex |
申请公布号 |
RU2544849(C1) |
申请公布日期 |
2015.03.20 |
申请号 |
RU20140100742 |
申请日期 |
2014.01.09 |
申请人 |
OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOST'JU "KHIMICHESKIJ ZAVOD FTORSOLEJ" |
发明人 |
BISPEN TAT'JANA ALEKSEEVNA;KOCHNEV ALEKSEJ DMITRIEVICH;MOLDAVSKIJ DMITRIJ DMITRIEVICH;SERGEEVA ANNA ALEKSANDROVNA |
分类号 |
C07C23/20;C07C17/354;C07C17/392 |
主分类号 |
C07C23/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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