公开(公告)号：US11680019B2

公开(公告)日：2023-06-20

申请号：US16091735

申请日：2017-04-06

Applicant: Saint-Gobain Placo SAS

Inventor： Nicholas Jones ,  Adam Richardson ,  Jan Rideout ,  Laura Brooks ,  Joanna Sparkes ,  David Jalland ,  Nicola Jupp

IPC: C04B28/14 ,  E04C2/04 ,  E04C2/06 ,  C04B14/06 ,  C04B14/28 ,  C04B14/42 ,  C04B16/06 ,  C04B24/38 ,  C04B111/00 ,  C04B111/10

CPC classification number: C04B28/14 ,  C04B14/06 ,  C04B14/28 ,  C04B14/42 ,  C04B16/0675 ,  C04B24/383 ,  E04C2/043 ,  E04C2/06 ,  C04B2111/0062 ,  C04B2111/1006 ,  Y02W30/91 ,  C04B28/14 ,  C04B14/42 ,  C04B24/2623 ,  C04B28/14 ,  C04B14/06 ,  C04B14/28 ,  C04B14/42 ,  C04B18/24 ,  C04B24/2623 ,  C04B24/2641

Abstract: A panel has a gypsum matrix, in which the following additives are embedded: glass fibre in an amount greater than 1 wt % relative to the gypsum and a synthetic polymeric binder in an amount greater than 2.5 wt % relative to the gypsum. The glass fibre and synthetic polymeric binder are present in a weight ratio of at least 2 parts binder to one part fibre. The amount of sand present in the gypsum matrix lies in the range 0-0.5 wt % relative to the gypsum. The amount of cellulosic fibre present in the gypsum matrix lies in the range 0-2 wt % relative to the gypsum.

公开(公告)号：US20220098858A1

公开(公告)日：2022-03-31

申请号：US17499328

申请日：2021-10-12

Applicant: Saint-Gobain Placo SAS

Inventor： Laura Brooks ,  Nicola Jupp ,  Joanna Sparkes ,  Adam Richardson ,  Nicholas Jones ,  Jan Rideout

IPC: E04C2/04 ,  C04B28/14 ,  C04B14/42 ,  C04B24/26 ,  C04B24/38

Abstract: A gypsum product has a first polymeric additive and a second polymeric additive distributed therein, wherein the first polymeric additive is a synthetic polymer and the second polymeric additive is starch.
It has been found that the combination of starch and a synthetic polymer may result in one or more of the following advantages in the manufacture and performance of gypsum products: increased strength; greater ease of manufacturing due to the increased fluidity of stucco slurries containing both additives; and increased resistance to hygroscopic expansion.

公开(公告)号：US10731343B2

公开(公告)日：2020-08-04

申请号：US15521335

申请日：2015-11-19

Applicant: Saint-Gobain Placo SAS

Inventor： Laura Brooks ,  Nicola Jupp ,  Joanna Sparkes ,  Elodie Taboulot ,  Adam Richardson ,  Nicholas Jones ,  Jan Rideout

IPC: E04C2/04 ,  C04B28/14 ,  C04B14/42 ,  C04B16/02 ,  C04B24/38 ,  C04B111/00

Abstract: A plasterboard comprises a gypsum matrix having a polymeric additive distributed therein in an amount of at least 1 wt % relative to the gypsum, the gypsum matrix further having a first group of fibres and a second group of fibres embedded therein, wherein the fibres of the first group of fibres have an average length that is at least three times the average length of the fibres of the second group of fibres.

公开(公告)号：US11505498B2

公开(公告)日：2022-11-22

申请号：US16988773

申请日：2020-08-10

Applicant: Saint-Gobain Placo SAS

Inventor： Laura Brooks ,  Nicola Jupp ,  Joanna Sparkes ,  Adam Richardson ,  Nicholas Jones ,  Jan Rideout ,  Keith Humphrey

IPC: C04B28/14 ,  B32B5/02 ,  B32B13/02 ,  B32B13/08 ,  B27N3/00 ,  E04C2/04 ,  C04B14/42 ,  C04B18/26 ,  C04B24/26 ,  C04B24/38 ,  C04B111/00 ,  B32B13/14 ,  B32B29/00

Abstract: A plasterboard comprising a gypsum matrix having wood particles embedded therein in an amount of at least 2 wt % relative to the gypsum, the gypsum matrix further comprising glass fibres in an amount of at least 1 wt % relative to the gypsum.

公开(公告)号：US20200369569A1

公开(公告)日：2020-11-26

申请号：US16988773

申请日：2020-08-10

Applicant: Saint-Gobain Placo SAS

Inventor： Laura Brooks ,  Nicola Jupp ,  Joanna Sparkes ,  Adam Richardson ,  Nicholas Jones ,  Jan Rideout ,  Keith Humphrey

IPC: C04B28/14 ,  B32B5/02 ,  B32B13/02 ,  B32B13/08 ,  B27N3/00 ,  E04C2/04 ,  C04B14/42 ,  C04B18/26 ,  C04B24/26 ,  C04B24/38

Abstract: A plasterboard comprising a gypsum matrix having wood particles embedded therein in an amount of at least 2 wt % relative to the gypsum, the gypsum matrix further comprising glass fibres in an amount of at least 1 wt % relative to the gypsum.

公开(公告)号：US20170327424A1

公开(公告)日：2017-11-16

申请号：US15527731

申请日：2015-11-19

Applicant: Saint-Gobain Placo SAS

Inventor： Laura Brooks ,  Nicola Jupp ,  Joanna Sparkes ,  Adam Richardson ,  Jan Rideout ,  Nicolas Jones

IPC: C04B28/14 ,  C04B14/42

CPC classification number: C04B28/14 ,  C04B14/42 ,  Y02W30/97 ,  C04B18/248 ,  C04B24/383

Abstract: A method of producing a gypsum product comprises the steps of: □preparing a stucco slurry; □adding starch-containing flour to the slurry in an amount of at least 2% relative to the dry weight of the stucco; and □allowing the stucco slurry to set.

公开(公告)号：US20230040864A1

公开(公告)日：2023-02-09

申请号：US17966019

申请日：2022-10-14

Applicant: Saint-Gobain Placo SAS

Inventor： Laura Brooks ,  Nicola Jupp ,  Joanna Sparkes ,  Adam Richardson ,  Nicholas Jones ,  Jan Rideout ,  Keith Humphrey

IPC: C04B28/14 ,  B32B5/02 ,  B32B13/02 ,  B32B13/08 ,  B27N3/00 ,  E04C2/04 ,  C04B14/42 ,  C04B18/26 ,  C04B24/26 ,  C04B24/38

Abstract: A plasterboard comprising a gypsum matrix having wood particles embedded therein in an amount of at least 2 wt % relative to the gypsum, the gypsum matrix further comprising glass fibres in an amount of at least 1 wt % relative to the gypsum.

公开(公告)号：US11117835B2

公开(公告)日：2021-09-14

申请号：US16750623

申请日：2020-01-23

Applicant: SAINT-GOBAIN PLACO

Inventor： Laura Brooks ,  Robin Fisher ,  Jan Rideout

IPC: C04B28/14 ,  C04B111/28 ,  C04B111/34

Abstract: The present invention provides a calcium sulphate-based product (e.g. a wall board) comprising gypsum, a pozzolan source such as a clay additive, rice husk ash or diatomaceous earth and a metal salt additive. The product may be produced by drying an aqueous slurry comprising calcined gypsum, the pozzolan source and the metal salt additive. The clay additive may be a kaolinitic clay. The metal salt additive may be a magnesium salt e.g. magnesium nitrate, magnesium chloride or magnesium hydroxide.

公开(公告)号：US10662113B2

公开(公告)日：2020-05-26

申请号：US15525467

申请日：2015-11-17

Applicant: SAINT-GOBAIN PLACO

Inventor： Laura Brooks ,  Robin Fisher ,  Jan Rideout

IPC: C04B28/14 ,  C04B22/08 ,  C04B24/42 ,  C04B111/28 ,  C04B111/34

Abstract: The present invention provides calcium sulphate-based product having reduced shrinkage after exposure to high temperatures, the product comprising gypsum, a pozzolan source (e.g. in an amount between 4-27 wt %) and a metal salt additive (in an amount between 0.5 and 10 wt %). The pozzolan source may be selected from a kaolinitic clay material, fly ash, rice husk ash, diatomaceous earths, volcanic ashes and pumices, micro-silica, silica fume and silicone oil. The metal salt additive may be a metal salt which decomposes between a temperature of 300-500° C. to yield a metal oxide, e.g. magnesium nitrate.

公开(公告)号：US12098097B2

公开(公告)日：2024-09-24

申请号：US17293337

申请日：2019-11-07

Applicant: SAINT-GOBAIN PLACO

Inventor： Kirsty Walton ,  Nicholas Jones ,  David Cutler ,  Nicola Jupp ,  Laura Brooks

IPC: C04B16/04 ,  B28C5/40 ,  C04B14/42 ,  C04B20/10 ,  C04B28/14 ,  B28B19/00 ,  C04B111/00

CPC classification number: C04B16/04 ,  B28C5/402 ,  B28C5/406 ,  C04B14/42 ,  C04B20/1033 ,  C04B28/14 ,  B28B19/0092 ,  C04B2111/00629

Abstract: A method of preparing a gypsum-based product comprises the steps of mixing calcined gypsum with polymer particles and water to provide a slurry. The polymer particles comprise principally polyvinyl acetate, and have a particle size distribution, measured using laser diffractometry, such that particles having a diameter of 4.5 μm or less provide at least 90% of the total particle volume.