Rotomolding processes for poly(aryl ketones) and other high temperature polymers

    公开(公告)号:US10899047B2

    公开(公告)日:2021-01-26

    申请号:US14387569

    申请日:2013-03-05

    Applicant: Arkema Inc.

    Abstract: A method of manufacturing an article comprises rotomolding at least one polymer comprising a poly(aryl ketone), such as PEKK, under conditions effective to produce a rotomolded article having an impact value of at least 35 in-lbs. A rotomolding method comprises heating the mold for a period of time after the internal air temperature of the mold reaches the highest melting point of the at least one polymer. Methods also include using a PEKK powder with a bulk density of at least about 400 g/L. Rotomolded articles of the present invention have impact values of between about 40 in-lbs to about 95 in-lbs, and in particular embodiments greater than about 95 in-lbs.

    Blowing Agent Compositions of Hydrofluoroolefins and Hydrochlorofluoroolefins

    公开(公告)号:US20200262995A1

    公开(公告)日:2020-08-20

    申请号:US16869621

    申请日:2020-05-08

    Applicant: Arkema Inc.

    Abstract: The present invention relates to blowing agent compositions comprising at least one hydrofluoroolefin (HFO) selected from cis- and/or trans- 1,3,3,3-tetrafluoropropene (HFO-1234ze) and at least one hydrochlorofluoroolefin (HCFO) selected from cis- and/or trans- 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) used in the preparation of foamable thermoplastic compositions. The blowing agent compositions are useful in the production of low density insulating foams with improved k-factor.

    Processes and systems for recovering methanesulfonic acid in purified form

    公开(公告)号:US10669232B2

    公开(公告)日:2020-06-02

    申请号:US16485464

    申请日:2018-05-08

    Applicant: Arkema Inc.

    Abstract: Aspects of the invention relate to systems and processes for recovering methanesulfonic acid, in a purified form, from a composition additionally including sulfur trioxide. In accordance with one aspect, the invention provides a process that includes separating a feed stream comprised of hydrocarbons, methanesulfonic acid, sulfur trioxide, and optionally sulfuric acid to produce a light stream comprised of hydrocarbons and a heavy stream comprised of methanesulfonic acid and sulfur trioxide; contacting (e.g., by mixing) the heavy stream with a reactive additive capable of reacting with sulfur trioxide, under conditions effective to cause reaction of the reactive additive with the sulfur trioxide to produce a heavy reaction product having a boiling point higher than the boiling point of methanesulfonic acid; and separating the heavy stream using a distillation column to produce a distillate stream consisting essentially of methanesulfonic acid and a bottoms stream comprising the heavy reaction product.

    METHODS FOR MAKING CYCLOHEXENE OXIDE-CONTAINING ESTERS

    公开(公告)号:US20200165218A1

    公开(公告)日:2020-05-28

    申请号:US16619587

    申请日:2018-06-12

    Applicant: Arkema Inc.

    Abstract: A method of making an ester comprised of at least one cyclohexene oxide moiety is provided, involving the steps of a) esterifying an alcohol with a carboxylic acid-substituted cyclohexene to obtain an intermediate comprised of at least one carboxylate-substituted cyclohexene moiety; and b) epoxidizing the intermediate obtained in step a) with an epoxidizing agent to obtain the ester comprised of at least one cyclohexene oxide moiety. The esters have utility as acid scavengers, plasticizers and reactive resins.

    Preparation of fluorosilicon compounds

    公开(公告)号:US10590150B2

    公开(公告)日:2020-03-17

    申请号:US16057886

    申请日:2018-08-08

    Applicant: Arkema Inc.

    Abstract: Methods of synthesizing fluorosilanes containing cyano-substituted alkyl groups are provided. For example, 3-cyanopropyldimethylfluorosilane may be produced by reacting tetramethyldisiloxane and boron trifluoride to obtain fluorodimethylsilane and then reacting the fluorodimethylsilane with allyl cyanide, in the presence of a hydrosilylation catalyst.

    Fluorosilicon nitrile compounds
    140.
    发明授权

    公开(公告)号:US10590149B2

    公开(公告)日:2020-03-17

    申请号:US16036973

    申请日:2018-07-17

    Applicant: Arkema Inc.

    Abstract: Novel fluorosilicon nitrile compounds, and methods of preparing them, are described. The fluorosilicon nitrile compounds are characterized by having a total of four substituents attached to a silicon atom, wherein one or two of the substituents are fluorine atoms, one or two of the substituents are cyanoalkyl groups, which are the same as or different from each other, and the remainder of the substituents, if any, are alkyl groups, which are the same as or different from each other.

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