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    Alkyl sulfate / alkyl ether sulfate gypsum foamer
    1.
    发明授权
    Alkyl sulfate / alkyl ether sulfate gypsum foamer 有权

    公开(公告)号：US12180116B2

    公开(公告)日：2024-12-31

    申请号：US18199529

    申请日：2023-05-19

    Applicant: STEPAN COMPANY ,  SAINT-GOBAIN PLACO

    Inventor： Brian K. Mirous ,  Hamouda Jaffel

    IPC: C04B24/16 ,  C04B28/14 ,  C04B38/10 ,  C04B40/00 ,  C08K5/36 ,  C08K5/41 ,  C04B111/00

    Abstract: A surfactant composition is disclosed comprising a first alkyl sulfate surfactant, optionally a second alkyl sulfate surfactant, and optionally an alkyl ether sulfate. The first and second alkyl sulfate surfactants have Formula (1): R1—OSO3−+M1  (1) and the alkyl ether sulfate has Formula (2): R2—(OCH2CH2)yOSO3−+M2  (2) in which R1 and R2 are independently selected linear or branched alkyl or a combination thereof having from 6 to 14 carbon atoms, y has an average value from 0.1 to 5, and M1 and M2 are cations independently selected from sodium, calcium, ammonium, or a combination of two or all of these. Use of the composition as a foaming agent for gypsum slurries, and of the gypsum slurries for formation of gypsum boards, are disclosed.

    Hose
    3.
    发明申请
    Hose 有权

    公开(公告)号：US20220381377A1

    公开(公告)日：2022-12-01

    申请号：US17772082

    申请日：2020-12-09

    Applicant: Saint-Gobain Placo

    Inventor： Hamouda Jaffel ,  Andrea Ranzani da Costa ,  Radomir Kamler ,  Guillaume Saingier

    IPC: F16L11/12 ,  F16L43/00 ,  B28B1/14 ,  B28B13/02

    Abstract: A hose (200) is described, the hose comprising a first section (210) comprising a cross sectional area Aχ and a second section (220) comprising a cross section area kj. The first section is in fluid communication with the second section and, in use, the first section is located upstream of the second section. Additionally, Axis at least twice the size of A2. Use of the hose and a method of dispensing slurry are also described.

    Apparatus and method for the production of foam
    4.
    发明授权
    Apparatus and method for the production of foam 有权

    公开(公告)号：US10150710B2

    公开(公告)日：2018-12-11

    申请号：US15312797

    申请日：2015-06-04

    Applicant: Saint-Gobain Placo SAS

    Inventor： Hamouda Jaffel ,  Richard Morlat

    IPC: C04B38/10 ,  C04B28/14 ,  B28C5/38 ,  B01F5/06 ,  B01F3/04 ,  C04B103/40 ,  C04B103/48

    Abstract: An apparatus for preparing foam for incorporation into cementitious slurry comprises a conduit having an inlet for receiving a gas feed and a surfactant feed, and an outlet for allowing the exit of foam. The conduit houses a porous plug that provides a partial barrier to fluid flow along the conduit, the plug comprising a plurality of particles that are packed in a regular array and that define a three-dimensional network of pores extending therebetween. The apparatus comprises a resilient component located between the plug and the conduit.

    METHOD OF FORMING A GYPUSM PANEL, METHOD OF ANALYSING A GYPSUM CORE, AND A GYPSUM CORE ANALYSIS TOOL
    5.
    发明公开
    METHOD OF FORMING A GYPUSM PANEL, METHOD OF ANALYSING A GYPSUM CORE, AND A GYPSUM CORE ANALYSIS TOOL 审中-公开

    公开(公告)号：US20240116214A1

    公开(公告)日：2024-04-11

    申请号：US18481315

    申请日：2023-10-05

    Applicant: Saint-Gobain Placo

    Inventor： Remi Lespiat ,  Arkadiusz Niznik ,  Hamouda Jaffel ,  Celia Decabooter

    IPC: B28B19/00 ,  B28B17/00 ,  G06T7/00

    CPC classification number: B28B19/0092 ,  B28B17/0081 ,  G06T7/0004

    Abstract: The present disclosure relates generally to methods of analysing and manufacturing gypsum panels, for example, suitable for use as building surface products. The present disclosure relates more particularly to a method of forming a gypsum panel. The method includes forming a porous slurry layer on a receiving surface using a plurality of operating parameters, and allowing the porous slurry layer to set to form a gypsum core of a gypsum panel. The panel is then cut to form a cut surface that extends through the gypsum core, and an image of a region of the cut surface is captured. The image is analysed to identify bubbles intersecting the cut surface. A measure of bubble contact in the gypsum core is then calculated from the identified bubbles in the image. Based on the measure of bubble contact, an operating parameter used for forming the porous slurry layer is modified.

    A Mixing Apparatus and Mixing Method
    7.
    发明公开
    A Mixing Apparatus and Mixing Method 审中-公开

    公开(公告)号：US20230277991A1

    公开(公告)日：2023-09-07

    申请号：US18007443

    申请日：2021-07-14

    Applicant: Saint-Gobain Placo

    Inventor： Hamouda Jaffel ,  Sophie Quelen ,  Jean-Luc Marin

    IPC: B01F27/1152 ,  B01F27/90 ,  B01F27/92 ,  B01F35/71

    CPC classification number: B01F27/1152 ,  B01F27/90 ,  B01F27/923 ,  B01F35/711

    Abstract: Lightweight construction panels, such as plasterboard, (e.g. gypsum plasterboard) are commonly used to provide internal partitions in buildings. Sheets of plasterboard are typically carried and positioned by hand. Accordingly, it is desirable to reduce the weight of plasterboard. It is known to include an aqueous foam in the stucco slurry used to produce plasterboards. However, prior known mixers have been found to destroy foam bubbles. The present invention provides a stucco slurry mixing apparatus (100) including an inlet (130) for the introduction of foam into a mixing chamber (110), wherein the inlet (130) includes an inlet aperture (132) in a wall of the mixing chamber (110) and an inlet conduit (134) extending therefrom such that a relative angle between a longitudinal axis (136) of the inlet conduit (134) and a tangent (140) to a mixing path (124) defined by a mixing member (120) is less than 90 degrees.

    Apparatus and Method for the Production of Foam
    8.
    发明申请
    Apparatus and Method for the Production of Foam 审中-公开

    公开(公告)号：US20190077719A1

    公开(公告)日：2019-03-14

    申请号：US16186791

    申请日：2018-11-12

    Applicant: Saint-Gobain Placo SAS

    Inventor： Hamouda Jaffel ,  Richard Morlat

    IPC: C04B38/10 ,  C04B28/14 ,  B28C5/38 ,  B01F5/06 ,  B01F3/04 ,  C04B103/40 ,  C04B103/48

    Abstract: An apparatus for preparing foam for incorporation into cementitious slurry comprises a conduit having an inlet for receiving a gas feed and a surfactant feed, and an outlet for allowing the exit of foam. The conduit houses a porous plug that provides a partial barrier to fluid flow along the conduit, the plug comprising a plurality of particles that are packed in a regular array and that define a three-dimensional network of pores extending therebetween. The apparatus comprises a resilient component located between the plug and the conduit.

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