-
1.发明申请
公开(公告)号：WO2016040047A1
公开(公告)日：2016-03-17
申请号：PCT/US2015/047885
申请日：2015-09-01
Applicant: UNITED STATES GYPSUM COMPANY
Inventor： GRUSSING, Jeffrey F. , EMAMI, Samar , RISCHE, Trevor S.
CPC classification number: C04B11/00 , C04B28/12 , C04B28/145 , C04B40/0042 , C04B40/0608 , C04B14/06 , C04B22/064 , C04B22/066 , C04B24/2641 , C04B2103/12 , C04B2103/408 , C04B22/148 , C04B2103/0057 , C04B22/143
Abstract: Methods of treating lime bucking in a plaster slurry are described. The method involves providing a slurry exhibiting lime bucking having a cone penetration of less than 10 mm at a consistency of 60 cc, comprising: water; calcium sulfate hemihydrate; and hydrated lime; and mixing an effective amount of a dispersant comprising a low intensity dispersant into the slurry so that the cone penetration increases and wherein the cone penetration is 10 mm or more at 10 minutes after addition of the dispersant at a consistency of 60 cc; and applying the plaster slurry containing the dispersant to a substrate. Veneer plaster dry component mixtures having reduced lime bucking when made into a slurry containing a low intensity dispersant, or hydrated lime coated with wax or a dibenzoate plasticizer are also described.
Abstract translation: 描述了在石膏浆料中处理石灰屈曲的方法。 该方法包括提供具有60cc浓度的具有小于10mm的锥形穿透性的石灰抵抗的浆料，包括：水; 半水合硫酸钙; 和熟石灰; 将有效量的包含低强度分散剂的分散剂混合到浆料中，使得锥体渗透增加，并且其中在以60cc的浓度加入分散剂后10分钟时锥体渗透为10mm或更多; 以及将含有分散剂的石膏浆料施加到基材上。 还描述了当制成含有低强度分散剂的浆料或涂覆有蜡或二苯甲酸酯增塑剂的熟石灰时，具有降低的石灰屈曲的单板石膏干组分混合物。
-
公开(公告)号：WO2020018531A1
公开(公告)日：2020-01-23
申请号：PCT/US2019/041997
申请日：2019-07-16
Applicant: UNITED STATES GYPSUM COMPANY
Inventor： LI, Qinghua , HEMPHILL, Mark K. , RISCHE, Trevor S.
Abstract: A method of making a gypsum board including: preparing an aqueous slurry including a mixture of: calcium sulfate hemihydrate, water at a weight ratio of water to calcium sulfate hemihydrate of 0.2:1 to 1.2:1, and on a dry basis per 100 parts by weight (pbw) calcium sulfate hemihydrate: 0.2 to 2 pbw siloxane, 0.01 to 2 pbw siloxane polymerization catalyst including magnesium oxide and optionally fly ash, and 0.01 to 0.2 pbw triethanolamine (TEOA); allowing the siloxane to polymerize to polysiloxane; and depositing the slurry on a first cover sheet and covering the slurry with a second cover sheet to shape the slurry, and allowing the shaped slurry to set to form the gypsum board. Also, disclosed is the gypsum board resulting from the method.
-
公开(公告)号：WO2019226633A1
公开(公告)日：2019-11-28
申请号：PCT/US2019/033285
申请日：2019-05-21
Applicant: UNITED STATES GYPSUM COMPANY
Inventor： LI, Qinghua , SANG, Yijun , RISCHE, Trevor S.
IPC: C04B41/50 , C04B41/00 , C04B41/61 , C04B28/14 , B32B7/02 , B32B13/02 , B32B13/04 , B32B13/08 , B32B13/14 , E04C2/04 , C04B111/00
Abstract: Disclosed is a composite gypsum board comprising a board core and a concentrated layer, as well as related methods of preparing board and slurries. The board core and the concentrated layer both are formed from water and stucco. The concentrated layer is designed to have higher density and/or nail pull than the core. The concentrated layer is further formed from one or more of starch thickener, cellulose, and/or copolymer containing polyacrylamide and acrylic acid. In some embodiments, the concentrated layer is formed from an enhancing additive to enhance strength therein, while the core is formed without using enhancing additive or less enhancing additive than used in forming the board core.
-
公开(公告)号：EP3797094A1
公开(公告)日：2021-03-31
申请号：EP19732152.4
申请日：2019-05-21
Applicant: United States Gypsum Company
Inventor： LI, Qinghua , SANG, Yijun , RISCHE, Trevor S.
-
-
-
Search Results
4
records
(took 0.022 seconds)
