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公开(公告)号：US20150183023A1
公开(公告)日：2015-07-02
申请号：US14404545
申请日：2013-05-27
Applicant: SAINT-GOBAIN PLACO
Inventor： Helene Retot , Nathalie Petigny , Emmanuel Fourdrin , Stéphane Thioliere
CPC classification number: B22C1/00 , B22C1/181 , B22C9/02 , C04B28/14 , C04B28/146 , C04B2111/00939 , C04B14/024 , C04B14/06 , C04B20/0096 , C04B14/303 , C04B14/323
Abstract: The invention relates to a mineral composition for the preparation of foundry moulds, comprising: (a) from 20% to 90% by weight of plaster, (b) from 10% to 80% by weight of a mineral component based on silica and/or alumina, and (c) from 0.5% to 4.8%, preferably from 1.5% to 4.5% and in particular between 2% and 4.5% by weight, of a mineral powder having a thermal conductivity (X), at 20° C., of greater than 15 W/(m.K) and a specific surface area of greater than 10 m2/g, these percentages being relative to the total weight of the sum of the components (a), (b) and (c).
Abstract translation: 本发明涉及一种用于制备铸造模具的矿物组合物，其包含：（a）20重量％至90重量％的石膏，（b）10重量％至80重量％的基于二氧化硅和/ 或氧化铝，和（c）在20℃下具有导热系数（X）的矿物粉末的0.5％至4.8％，优选1.5％至4.5％，特别是2％至4.5％ ，大于15W /（mK），比表面积大于10m2 / g，这些百分数相对于组分（a），（b）和（c）的总和的总重量。
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公开(公告)号：US20230043281A1
公开(公告)日：2023-02-09
申请号：US17758795
申请日：2021-01-27
Applicant: Saint-Gobain Placo
Inventor： Jan Rideout , Nicholas Jones , Laura Brooks , Helene Retot , Richard Morlat , Benoit Montigny
Abstract: Lightweight construction panels, such as gypsum plaster-board, are commonly used to provide internal partitions in buildings It is known to cover, either partially or fully, the panel with an aqueous material such as gypsum plaster or jointing compound. It has been found that known panels expand when they absorb water. This gives rise to several undesirable results such as the gypsum plaster or jointing compound cracking as the panel expands as moisture is absorbed. The present invention provides a panel comprising a gypsum matrix including fibres in an amount of at least 0.8 wt % relative to the gypsum, a polymeric additive in an amount of at least 0.8 wt % relative to the gypsum, and at least one phosphate additive. A panel having such a composition has been found to have desirable characteristics.
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公开(公告)号：US10052680B2
公开(公告)日：2018-08-21
申请号：US14404545
申请日：2013-05-27
Applicant: SAINT-GOBAIN PLACO
Inventor： Helene Retot , Nathalie Petigny , Emmanuel Fourdrin , Stephane Thioliere
IPC: B22C1/00 , B22C9/02 , B22C1/18 , C04B28/14 , C04B111/00
Abstract: The invention relates to a mineral composition for the preparation of foundry molds, comprising: (a) from 20% to 90% by weight of plaster, (b) from 10% to 80% by weight of a mineral component based on silica and/or alumina, and (c) from 0.5% to 4.8%, preferably from 1.5% to 4.5% and in particular between 2% and 4.5% by weight, of a mineral powder having a thermal conductivity (λ), at 20° C., of greater than 15 W/(m·K) and a specific surface area of greater than 10 m2/g, these percentages being relative to the total weight of the sum of the components (a), (b) and (c).
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