Foams And Foamable Compositions Containing Halogenated Olefin Blowing Agents

    公开(公告)号:US20180016379A1

    公开(公告)日:2018-01-18

    申请号:US15639455

    申请日:2017-06-30

    IPC分类号: C08G18/18 C08J9/14 C08G101/00

    摘要: The invention provides foam forming methods that comprise: (a) preparing a foamable system comprising at least one hydrohaloolefin; and (b) ensuring either (i) the substantial absence of long-term decomposition-inducing contact between said hydrofluoroolefin and an amine-containing catalyst; (ii) that an effective amount of surfactant is available in the system under conditions which prevent long term exposure of the surfactant to a long-term decomposition reaction environment; or (iii) a combination of (i) and (ii). Related methods, foamable systems and foams are also disclosed. Preferred embodiments provide polyurethane and polyisocyanurate foams and methods for the preparation thereof, including closed-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The preferred foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are preferably produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, a catalyst and is further characterized by being substantially free of added water.

    Process for the purification of hydrofluoroolefins
    74.
    发明授权
    Process for the purification of hydrofluoroolefins 有权
    纯化氢氟烯烃的方法

    公开(公告)号:US08609909B2

    公开(公告)日:2013-12-17

    申请号:US12696613

    申请日:2010-01-29

    IPC分类号: C07C17/386 B01D3/36

    CPC分类号: B01D11/0426 B01D11/0492

    摘要: Processes for the preparation and purification of hydrofluoroolefins such as tetrafluorinated propenes. A process is provided for separating a first hydrofluoroolefin from a second hydrofluoroolefin by a) providing a mixture including a first hydrofluoroolefin and a second hydrofluoroolefin, which first hydrofluoroolefin is preferentially more reactive with an amine than the second hydrofluoroolefin; b) adding a sufficient amount of an amine to the mixture to form a combination including the second hydrofluoroolefin and a reaction product of the first hydrofluoroolefin and the amine; and then c) separating the reaction product from the combination. This is particularly useful for removing 1,2,3,3,3-pentafluoropropene (HFO-1225ye) impurities from the hydrofluoroolefin 2,3,3,3-tetrafluoropropene (HFO-1234yf). HFO-1234yf is a refrigerant with low global warming potential.

    摘要翻译: 用于制备和纯化氢氟烯烃如四氟化丙烯的方法。 提供了一种通过以下方法提供第一氢氟烯烃与第二氢氟烯烃的分离:a)提供包含第一氢氟烯烃和第二氢氟烯烃的混合物,该第一氢氟烯烃优选比第二氢氟烯烃更能反应胺; b)向混合物中加入足够量的胺以形成包含第二氢氟烯烃和第一氢氟烯烃与胺的反应产物的组合; 然后c)将反应产物与组合物分离。 这对于从氢氟烯烃2,3,3,3-四氟丙烯(HFO-1234yf)中除去1,2,3,3,3-五氟丙烯(HFO-1225ye)杂质是特别有用的。 HFO-1234yf是一种全球变暖潜力较低的制冷剂。

    Process for the preparation of 2,3,3,3-tetrafluoropropene (HFO-1234yf)
    77.
    发明授权
    Process for the preparation of 2,3,3,3-tetrafluoropropene (HFO-1234yf) 有权
    制备2,3,3,3-四氟丙烯(HFO-1234yf)的方法

    公开(公告)号:US08071826B2

    公开(公告)日:2011-12-06

    申请号:US12391477

    申请日:2009-02-24

    IPC分类号: C07C21/18

    摘要: A process for the preparation of 2,3,3,3-tetrafluoropropene (HFO-1234yf). HFO-1234yf is a refrigerant with low global warming potential. A process comprises a) reacting chlorotrifluoroethylene with a methyl halide to form an intermediate product stream; and b) reacting the intermediate product stream with hydrogen fluoride to thereby produce a result comprising 2,3,3,3-tetrafluoropropene.

    摘要翻译: 制备2,3,3,3-四氟丙烯(HFO-1234yf)的方法。 HFO-1234yf是一种全球变暖潜力较低的制冷剂。 一种方法包括:a)使氯三氟乙烯与甲基卤反应形成中间产物流; 和b)使中间产物流与氟化氢反应,从而产生包含2,3,3,3-四氟丙烯的结果。

    PROCESS FOR THE PREPARATION OF FLUORINATED CIS-ALKENE
    78.
    发明申请
    PROCESS FOR THE PREPARATION OF FLUORINATED CIS-ALKENE 有权
    制备氟化苯乙烯的方法

    公开(公告)号:US20110288350A1

    公开(公告)日:2011-11-24

    申请号:US13110998

    申请日:2011-05-19

    IPC分类号: C07C17/281

    摘要: Disclosed is a process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkane with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents of the chlorofluoroalkane with hydrogen to produce a fluorine-containing olefin. Also disclosed are catalyst compositions for the hydrodechlorination of chlorofluoroalkanes comprising copper metal deposited on a support, and comprising palladium deposited on calcium fluoride, poisoned with lead and reducing the in the presence or absence of a dehydrochlorination catalyst under conditions effective to form a product stream comprising cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336).

    摘要翻译: 公开了一种制备含氟烯烃的方法,包括在催化剂存在下,使氯氟烷烃与氢气在足以使氯氟烷烃的氯取代基被氢取代以产生含氟烯烃的温度下接触。 还公开了用于加氢脱氯氯氟烷烃的催化剂组合物,其包含沉积在载体上的铜金属,并且包含沉积在氟化钙上的钯,由铅中毒并在有效形成产物流的条件下在脱氯化氢催化剂存在或不存在下还原,包含 顺式-1,1,1,4,4,4-六氟-2-丁烯(HFO-1336)。

    Process for the manufacture of fluorinated olefins
    79.
    发明授权
    Process for the manufacture of fluorinated olefins 有权
    制造氟化烯烃的方法

    公开(公告)号:US07786333B2

    公开(公告)日:2010-08-31

    申请号:US12389110

    申请日:2009-02-19

    IPC分类号: C07C17/00 C07C17/10

    摘要: A process for the production of fluorinated olefins, preferably fluorinated propenes, by contacting a feed stream containing a fluorinated olefin and hydrogen with a first amount of catalyst to produce the hydrofluorocarbon, wherein a first exit stream contains unreacted fluorinated olefin and hydrogen; contacting the first exit stream with a second amount of catalyst to produce a hydrofluorocarbon, wherein the second amount of catalyst is preferably greater than the first amount of catalyst; and contacting the hydrofluorocarbon with a catalyst for dehydrohalogenation to produce a product stream of fluorinated olefin.

    摘要翻译: 通过使包含氟化烯烃和氢气的进料流与第一量催化剂接触以产生氢氟烃来生产氟化烯烃,优选氟化丙烯的方法,其中第一出口流含有未反应的氟化烯烃和氢; 使第一出口流与第二量的催化剂接触以产生氢氟烃,其中第二量的催化剂优选大于第一量的催化剂; 并将氢氟烃与用于脱卤化氢的催化剂接触以产生氟化烯烃的产物流。

    PROCESS FOR THE PURIFICATION OF HYDROFLUOROOLEFINS
    80.
    发明申请
    PROCESS FOR THE PURIFICATION OF HYDROFLUOROOLEFINS 有权
    氢氟菊酯的纯化方法

    公开(公告)号:US20100193347A1

    公开(公告)日:2010-08-05

    申请号:US12696613

    申请日:2010-01-29

    IPC分类号: B01D3/36

    CPC分类号: B01D11/0426 B01D11/0492

    摘要: Processes for the preparation and purification of hydrofluoroolefins such as tetrafluorinated propenes. A process is provided for separating a first hydrofluoroolefin from a second hydrofluoroolefin by a) providing a mixture comprising a first hydrofluoroolefin and a second hydrofluoroolefin, which first hydrofluoroolefin is preferentially more reactive with an amine than the second hydrofluoroolefin; b) adding a sufficient amount of an amine to the mixture to form a combination comprising the second hydrofluoroolefin and a reaction product of the first hydrofluoroolefin and the amine; and then c) separating the reaction product from the combination. This is particularly useful for removing 1,2,3,3,3-pentafluoropropene (HFO-1225ye) impurities from the hydrofluoroolefin 2,3,3,3-tetrafluoropropene (HFO-1234yf). HFO-1234yf is a refrigerant with low global warming potential.

    摘要翻译: 用于制备和纯化氢氟烯烃如四氟化丙烯的方法。 提供了一种通过以下方法提供第一氢氟烯烃与第二氢氟烯烃的分离:a)提供包含第一氢氟烯烃和第二氢氟烯烃的混合物,该第一氢氟烯烃优选比第二氢氟烯烃更能反应胺; b)向混合物中加入足量的胺以形成包含第二氢氟烯烃和第一氢氟烯烃与胺的反应产物的组合; 然后c)将反应产物与组合物分离。 这对于从氢氟烯烃2,3,3,3-四氟丙烯(HFO-1234yf)中除去1,2,3,3,3-五氟丙烯(HFO-1225ye)杂质是特别有用的。 HFO-1234yf是一种全球变暖潜力较低的制冷剂。