公开(公告)号：US20170334782A1

公开(公告)日：2017-11-23

申请号：US15524127

申请日：2015-11-17

Applicant: SAINT-GOBAIN PLACO

Inventor： Laura BROOKS ,  Robin FISHER ,  Jan RIDEOUT

IPC: C04B28/14 ,  C01F11/46 ,  C04B111/28 ,  C08G77/04 ,  C04B111/00

CPC classification number: C04B28/14 ,  C01F11/46 ,  C04B2111/00612 ,  C04B2111/28 ,  C08G77/04 ,  C04B14/38 ,  C04B24/42 ,  C04B14/42

Abstract: The present invention provides a calcium sulphate-based product (e.g. a wall board) comprising gypsum and silicone oil. The product may be produced by drying an aqueous slurry comprising calcined gypsum and the silicone oil. The silicone oil is included in the slurry in an amount greater than 10 wt % which results in a product have greater than 8.5 wt % silicone oil. This improves structural integrity of the wallboard after exposure to elevated temperatures.

公开(公告)号：US20170320779A1

公开(公告)日：2017-11-09

申请号：US15524956

申请日：2015-11-17

Applicant: SAINT-GOBAIN PLACO

Inventor： Laura BROOKS ,  Robin FISHER ,  Jan RIDEOUT

IPC: C04B28/14 ,  C04B22/06 ,  C04B22/14 ,  C04B111/00 ,  C04B111/28 ,  C04B103/56

CPC classification number: C04B28/14 ,  C04B22/06 ,  C04B22/142 ,  C04B2103/58 ,  C04B2111/00612 ,  C04B2111/00939 ,  C04B2111/28 ,  C04B22/062 ,  C04B22/064 ,  C04B22/147 ,  C04B22/148 ,  C04B22/085 ,  C04B24/04

Abstract: A calcium sulphate-based product including gypsum and a shrinkage resistance additive. The shrinkage resistance additive is a metal nitrate, hydroxide, acetate or sulphate and is preferably provided in an amount greater than 4 wt % (based on the amount of additive and gypsum). The additive may be a nitrate of an alkali metal (e.g. potassium), an alkaline earth metal (e.g. magnesium or calcium), a transition metal (e.g. iron or zinc) or aluminium.

公开(公告)号：US20200216360A1

公开(公告)日：2020-07-09

申请号：US16822664

申请日：2020-03-18

Applicant: SAINT-GOBAIN PLACO

Inventor： Laura BROOKS ,  Robin FISHER ,  Jan RIDEOUT

IPC: C04B28/14 ,  C04B22/08 ,  C04B24/42

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：US20170334783A1

公开(公告)日：2017-11-23

申请号：US15525467

申请日：2015-11-17

Applicant: SAINT-GOBAIN PLACO

Inventor： Laura BROOKS ,  Robin FISHER ,  Jan RIDEOUT

IPC: C04B28/14 ,  C04B24/42 ,  C04B22/08 ,  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：US20200157007A1

公开(公告)日：2020-05-21

申请号：US16750623

申请日：2020-01-23

Applicant: SAINT-GOBAIN PLACO

Inventor： Laura BROOKS ,  Robin FISHER ,  Jan RIDEOUT

IPC: C04B28/14

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：US20170327423A1

公开(公告)日：2017-11-16

申请号：US15525523

申请日：2015-11-17

Applicant: SAINT-GOBAIN PLACO

Inventor： Laura BROOKS ,  Robin FISHER ,  Jan RIDEOUT

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

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.