Method for producing fluorinated olefins

    公开(公告)号:US10259761B2

    公开(公告)日:2019-04-16

    申请号:US15571079

    申请日:2016-06-01

    Applicant: Arkema Inc.

    Abstract: Fluorinated olefins are produced in a reductive coupling reaction by contacting a first reactant with a second reactant in the gas phase under an inert atmosphere at a temperature of at least 500 C. The first reactant may be, for example, a hydrofluorocarbon containing one or two carbon atoms, while the second reactant may be, for example, a two to four carbon hydrohalocarbon (e.g., a hydrofluorocarbon) or hydrocarbon.

    Nanodiamond coatings for solar cells

    公开(公告)号:US10224867B2

    公开(公告)日:2019-03-05

    申请号:US15022988

    申请日:2014-09-23

    Applicant: Arkema Inc.

    Abstract: A nanodiamond coating for use on a solar cell, the coating including a nanodiamond material suspended in a liquid, wherein the nanodiamond material has a size range from about 1 nm to about 10 nm. Methods for improving the efficiency of a solar cell are provided, including, mixing a nanodiamond material with a liquid polymer or non-polymer solvent to form a nanodiamond-polymer suspension, forming a coating of the suspension on a top surface of a solar cell, and drying the coating such that a dried nanodiamond-polymer layer remains bonded to the solar cell. Useful nanodiamond coating compositions may include a nanodiamond material, a fluoropolymer, a liquid solvent for the fluoro-polymer and at least one additive selected from the group consisting of dispersing agents, adhesion promoters, and coupling agents. The fluoropolymer may also be used in the form of an aqueous dispersion.

    METHOD FOR PRODUCING FLUORINATED OLEFINS
    8.
    发明申请

    公开(公告)号:US20180162795A1

    公开(公告)日:2018-06-14

    申请号:US15571079

    申请日:2016-06-01

    Applicant: Arkema Inc.

    CPC classification number: C07C17/278 C07C17/269 C07C21/18

    Abstract: Fluorinated olefins are produced in a reductive coupling reaction by contacting a first reactant with a second reactant in the gas phase under an inert atmosphere at a temperature of at least 500 C. The first reactant may be, for example, a hydrofluoro carbon containing one or two carbon atoms, while the second reactant may be, for example, a two to four carbon hydrohalocarbon (e.g., a hydrofluorocarbon) or hydrocarbon.

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