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    Functionalized particulate bicarbonate as blowing agent, foamable polymer composition containing it, and its use in manufacturing a thermoplastic foamed polymer
    84.
    发明授权
    Functionalized particulate bicarbonate as blowing agent, foamable polymer composition containing it, and its use in manufacturing a thermoplastic foamed polymer 有权

    公开(公告)号：US11421094B2

    公开(公告)日：2022-08-23

    申请号：US16317376

    申请日：2017-07-20

    Applicant: Solvay SA

    Inventor： Karine Cavalier ,  Jorge Alejandro Kabbabe Malave ,  Jean-Philippe Pascal ,  Thibaud Louis Alfred Detoisien

    IPC: C08J9/08 ,  C08J3/22 ,  C08J9/00 ,  C08L27/06

    Abstract: A chemical blowing agent for foaming a thermoplastic polymer, for example PVC plastisol or a polymer resin in an extrusion process, comprising a functionalized particulate bicarbonate containing at least one additive, preferably excluding an exothermic blowing agent. The additive may be selected from the group consisting of polymers; inorganic salts; oils; fats; resin acids, any derivative thereof, and salts thereof; amino acids; fatty acids; carboxylic or polycarboxylic acids, soaps; waxes; derivatives thereof; salts thereof; or any combinations thereof. The particulate bicarbonate may be functionalized by spray-drying, coating, extrusion or co-grinding with at least one additive. The functionalized particulate bicarbonate may comprise 50 wt % to less than 100 wt % of the bicarbonate component, and 0.02-50 wt % of the additive. A foamable polymer composition comprising such chemical blowing agent. A process for manufacturing a foamed polymer, such as foamed PVC, comprising shaping and heating the foamable polymer composition, and a foamed polymer obtained by such process.

    METHOD FOR THE REMOVAL OF AT LEAST ONE CONTAMINANT FROM AN AQUEOUS LIQUOR OR A GAS
    85.
    发明申请
    METHOD FOR THE REMOVAL OF AT LEAST ONE CONTAMINANT FROM AN AQUEOUS LIQUOR OR A GAS 有权

    公开(公告)号：US20220081334A1

    公开(公告)日：2022-03-17

    申请号：US17426645

    申请日：2020-02-20

    Applicant: SOLVAY SA

    Inventor： Eric COUDRY ,  Sabrina BEDEL ,  Perrine DAVOINE ,  Thierry DELPLANCHE

    IPC: C02F1/68 ,  C02F1/66 ,  B01D53/92 ,  F01N3/08 ,  B01F3/12 ,  B01F5/00 ,  B01F5/04

    Abstract: A method for the removal of at least one contaminant from an aqueous liquor or a gas, comprising: preparing a solution or slurry of a solid alkali reagent by supplying a solid alkali reagent into a pre-wetting chamber via a feed pipe; supplying a liquid via two or more liquid sidestreams, each through a liquid inlet positioned on a side wall of the chamber to allow the liquid sidestreams to wash an internal wall of a frusto-conical section of the chamber and flow, preferably tangentially onto the internal wall in a downward spiraling manner thereby forming a vortex, towards a fluid outlet of the chamber and to further wet the solid alkali reagent with the supplied liquid thereby forming a pre-wetted reagent; and flowing a stream though a conduit, thereby creating a suction by the eductor to draw the pre-wetted reagent out of the chamber fluid outlet and mixing it with the stream to form a slurry or solution; and directing the slurry or solution exiting the eductor to an aqueous liquor or gas treatment unit, removing at least a portion of the contaminant from the aqueous liquor or gas in the treatment unit.

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