Stabilization of fluorinated ketones
    3.
    依法登记的发明

    公开(公告)号:USH2211H1

    公开(公告)日:2008-03-04

    申请号:US11687774

    申请日:2007-03-19

    IPC分类号: C07C45/86

    摘要: Fluorinated ketones, for example, 1,1,1-trifluoroacetone, can be stabilized against storage degradation by combining with a content of hexafluoroisopropanol (HFIP). Containers containing the stabilized mixture show prolonged storage times compared to containers containing the fluorinated ketones alone. The stabilized mixture can be used as a starting material for reactions requiring fluorinated ketones, for example, 1,1,1-trifluoroacetone, as a starting material.

    Separation/purification of desflurane from hydrogen fluoride
    5.
    发明授权
    Separation/purification of desflurane from hydrogen fluoride 有权
    从氟化氢中分离/纯化地氟烷

    公开(公告)号:US08283500B2

    公开(公告)日:2012-10-09

    申请号:US11815673

    申请日:2006-02-09

    IPC分类号: C07C43/00

    摘要: An azeotrope comprising desflurane (CF3CFHOCF2H) and hydrogen fluoride (HF). The azeotrope can be prepared by fractionally distilling a crude mixture of desflurane and HF. Purer desflurane can be readily and easily separated from the azeotrope. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader quickly to ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the appended issued claims.

    摘要翻译: 包含地氟烷(CF 3 CFHOCF 2 H)和氟化氢(HF)的共沸物。 可以通过分馏蒸馏地氟烷和HF的粗混合物来制备共沸物。 Purer地氟烷可以容易地和容易地从共沸物中分离出来。 要强调的是,该摘要被提供以符合要求抽象的规则,这将允许搜索者或其他读者快速地确定技术公开的主题。 提交它的理解是,它不会用于解释或限制所附权利要求的范围或含义。

    Purification of 1,1,1,3,3,3-hexafluoroisopropanol
    10.
    发明授权
    Purification of 1,1,1,3,3,3-hexafluoroisopropanol 失效
    1,1,1,3,3,3-六氟异丙醇的纯化

    公开(公告)号:US07659433B2

    公开(公告)日:2010-02-09

    申请号:US10599472

    申请日:2005-02-04

    摘要: 1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) substantially free of 1,1,1-trifluoroacetone (TFA) can be separated from a mixture containing both compounds by A) catalytic reduction with hydrogen followed by fractional distillation; B) cooling to a temperature at which HFIP freezes and TFA remains liquid; C) forming a high boiling complex comprising HF and TFA followed by fractional distillation; or D) producing HF-free conditions to yield a HFIP/TFA azeotrope followed by fractional distillation. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR § 1.72(b).

    摘要翻译: 基本上不含1,1,1-三氟丙酮(TFA)的1,1,1,3,3,3-六氟异丙醇(HFIP)可以从含有这两种化合物的混合物中分离出来,A)用氢气催化还原,然后分馏; B)冷却至HFIP冻结的温度,TFA保持液态; C)形成包含HF和TFA的高沸点络合物,然后分馏; 或D)产生无HF条件以产生HFIP / TFA共沸物,随后进行分馏。 要强调的是,该摘要被提供以符合要求摘要的规则,这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。 37 CFR§1.72(b)。