公开(公告)号：US10737979B2

公开(公告)日：2020-08-11

申请号：US15918449

申请日：2018-03-12

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： Runhai Lu ,  Yijun Sang ,  Weixin D. Song

IPC: C04B22/14 ,  C04B28/14 ,  C04B24/22 ,  C04B22/16 ,  C04B18/24 ,  C04B24/38 ,  C04B20/02 ,  C04B40/00 ,  C04B111/00 ,  C04B103/12 ,  C04B103/52

Abstract: A modified gypsum set accelerator and a method of preparing the same is provided, which includes dry loose finely ground particles of a mixture of ground dry calcium sulfate dihydrate and a grinding aid selected from one or more of beta-naphthalene sulfonate formaldehyde condensate, trimetaphosphate phosphate salt, tripolyphosphate salt, tetra-pyrophosphate salt, and pregelatinized starch.

公开(公告)号：US10662112B2

公开(公告)日：2020-05-26

申请号：US15431444

申请日：2017-02-13

Applicant: United States Gypsum Company

Inventor： Annamaria Vilinska ,  Alfred C. Li ,  Weixin D. Song

IPC: C04B28/14 ,  B28C7/04 ,  B32B13/08 ,  C04B28/02 ,  C04B38/10 ,  B28C5/06 ,  B32B13/04 ,  B32B3/26 ,  B32B13/14 ,  B28C5/12 ,  B32B5/24 ,  B32B13/02 ,  B32B5/20 ,  E04C2/04 ,  C04B103/48 ,  C04B111/00 ,  B28B19/00

Abstract: Disclosed is a method and system for blending a foam modifier with foaming agent online, e.g., as may be particularly useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.

公开(公告)号：US10399899B2

公开(公告)日：2019-09-03

申请号：US13835002

申请日：2013-03-15

Applicant: United States Gypsum Company

Inventor： Yijun Sang ,  Weixin D. Song

IPC: C04B11/00 ,  E04C2/26 ,  E04C2/04 ,  C04B28/14 ,  C04B111/00

Abstract: Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise).

公开(公告)号：US10377108B2

公开(公告)日：2019-08-13

申请号：US13766181

申请日：2013-02-13

Applicant: United States Gypsum Company

Inventor： Cesar Chan ,  Weixin D. Song ,  Bangji Cao ,  Guy Rosenthal ,  Qiang Yu ,  Srinivas Veeramasuneni

IPC: B32B13/08 ,  B32B13/04 ,  C04B28/14 ,  D21H21/16 ,  D21H21/34 ,  C04B111/00 ,  C04B111/28

Abstract: Disclosed herein are gypsum products with at least one high efficiency heat sink additive. The gypsum products, e.g., gypsum panels, are less susceptible to the damaging effects of extreme heat as the temperature rises due to the presence of the at least one additive.

公开(公告)号：US10309771B2

公开(公告)日：2019-06-04

申请号：US15099082

申请日：2016-04-14

Applicant: United States Gypsum Company

Inventor： Jenner Omodt ,  Alfred C. Li ,  Michael P. Shake ,  Weixin D. Song

IPC: G01B11/30

Abstract: Embodiments of a system and a method for determining a surface smoothness of a facing specimen can be used in connection with the manufacture of products, including cementitious products such as gypsum wallboard, for example. Such systems and methods can be used to generate a composite smoothness factor based upon a measured mottle value and topography value using stochastic frequency distribution analysis.

公开(公告)号：US20160375656A1

公开(公告)日：2016-12-29

申请号：US15186212

申请日：2016-06-17

Applicant: United States Gypsum Company

Inventor： Alfred C. Li ,  Weixin D. Song ,  Yijun Sang ,  Gregg G. Diefenbacher ,  Annamaria Vilinska ,  Brian J. Christ ,  Fredrick T. Jones ,  Bradley W. Todd

IPC: B32B13/02 ,  C04B24/38 ,  B32B13/08 ,  C04B11/00 ,  B32B13/04 ,  B32B7/02

Abstract: Disclosed is a composite gypsum board comprising a board core and a concentrated layer of substantial thickness (e.g., at least about 0.02 inches). The concentrated layer includes a higher weight percentage of an enhancing additive than the board core. The board core has a thickness greater than the thickness of the concentrated layer and forms the bulk of the board volume. The concentrated layer has a higher density (e.g., at least about 1.1 times greater) than the density of the board core. Also disclosed is a method of preparing a composite gypsum board.

公开(公告)号：US08974925B1

公开(公告)日：2015-03-10

申请号：US14054620

申请日：2013-10-15

Applicant: United States Gypsum Company

Inventor： Bangji Cao ,  Weixin D. Song ,  Cesar Chan ,  Scott Leckie

IPC: B32B13/00 ,  E04B1/94 ,  E04B2/28

CPC classification number: E04B1/94 ,  B32B13/00 ,  E04B2/28 ,  E04C2/043 ,  E04C2/16 ,  E04C2/288 ,  Y10T428/249932

Abstract: Described herein is a composite board and a method of producing a composite board, the board having increased fire endurance. The board comprises a sheet having a thickness greater than about 0.014 inches, and a thermal conductivity of about 0.1 w/(m.k.) or less. The composite board can be part of a wall assembly comprising two boards defining an interior cavity, the sheet facing the interior cavity.

Abstract translation: 这里描述的是复合板和复合板的制造方法，该板具有增加的耐火性能。 该板包括厚度大于约0.014英寸，热导率为约0.1w /（m.k。）或更小的片材。 复合板可以是包括限定内部空腔的两个板的壁组件的一部分，该板面向内部空腔。

公开(公告)号：US11884040B2

公开(公告)日：2024-01-30

申请号：US17724025

申请日：2022-04-19

Applicant: United States Gypsum Company

Inventor： Qiang Yu ,  Weixin D. Song

IPC: C04B28/14 ,  B32B13/08 ,  B32B3/26 ,  B32B5/02 ,  B32B13/14 ,  B32B17/02 ,  B32B29/00 ,  C04B111/00 ,  C04B111/40

CPC classification number: B32B13/08 ,  B32B3/26 ,  B32B5/02 ,  B32B13/14 ,  B32B17/02 ,  B32B29/00 ,  C04B28/14 ,  C04B2111/0062 ,  C04B2111/40 ,  Y10T428/249968 ,  C04B28/14 ,  C04B22/16 ,  C04B24/226 ,  C04B24/383 ,  C04B28/14 ,  C04B22/16 ,  C04B24/383 ,  C04B2103/408

Abstract: This invention provides gypsum wallboards with a unique microstructure where the walls between voids are enhanced in thickness and strength to substantially improve the strength and handling properties of the wallboards. A method of making lightweight gypsum wallboards is also provided.

公开(公告)号：US11780113B2

公开(公告)日：2023-10-10

申请号：US17096551

申请日：2020-11-12

Applicant: United States Gypsum Company

Inventor： Qiang Yu ,  Srinivas Veeramasuneni ,  Weixin D. Song ,  Wenqi Luan

IPC: B28B1/50 ,  C04B20/06 ,  C04B28/14 ,  B32B38/00 ,  B28B11/12 ,  B28B11/24 ,  B32B5/16 ,  B32B9/00 ,  E04B1/94 ,  E04C2/04 ,  C04B111/00 ,  C04B111/28

CPC classification number: B28B1/50 ,  B28B11/12 ,  B28B11/243 ,  B32B5/16 ,  B32B9/005 ,  B32B38/164 ,  C04B20/06 ,  C04B28/14 ,  C04B28/145 ,  E04B1/942 ,  E04C2/04 ,  B32B2307/3065 ,  B32B2607/00 ,  C04B2111/0062 ,  C04B2111/28 ,  C04B2201/30 ,  Y10T428/249968 ,  Y10T428/249979 ,  Y10T428/26 ,  Y10T428/31971 ,  C04B28/145 ,  C04B14/386 ,  C04B14/42 ,  C04B14/46 ,  C04B20/0024 ,  C04B22/16 ,  C04B24/38 ,  C04B38/0054 ,  C04B38/106 ,  C04B2103/408 ,  C04B28/145 ,  C04B14/202 ,  C04B14/42 ,  C04B22/16 ,  C04B24/38 ,  C04B38/0054 ,  C04B38/106 ,  C04B2103/408

Abstract: A reduced weight, reduced density gypsum panel that includes high expansion vermiculite with fire resistance capabilities that are at least comparable to (if not better than) commercial fire rated gypsum panels with a much greater gypsum content, weight and density.

公开(公告)号：US11306028B2

公开(公告)日：2022-04-19

申请号：US16521072

申请日：2019-07-24

Applicant: United States Gypsum Company

Inventor： Qiang Yu ,  Weixin D. Song

IPC: C04B28/14 ,  B32B13/04 ,  B32B13/08 ,  B32B13/14 ,  B32B17/02 ,  B32B29/00 ,  B32B13/02 ,  C04B103/00 ,  C04B111/00

Abstract: This invention provides low dust low density gypsum wallboard products having high total core void volumes, corresponding to low densities in the range of about 10 to 30 pcf. The wallboards have a set gypsum core formed between two substantially parallel cover sheets, the set gypsum core preferably having a total void volume from about 80% to about 92%, and made from a slurry including stucco, pregelatinized starch, and a naphthalenesulfonate dispersant. The combination of the pregelatinized starch and the naphthalenesulfonate dispersant also provides a glue-like effect in binding the set gypsum crystals together. The wallboard formulation, along with small air bubble voids (and water voids) provides dust control during cutting, sawing, routing, snapping, nailing or screwing down, or drilling of the gypsum-containing products. This invention also provides a method of making the low dust low density gypsum products including the introduction of soap foam in an amount sufficient to form a total void volume, including air voids, preferably from about 80% to about 92% in the set gypsum core, corresponding to a set gypsum core density from about 10 pcf to about 30 pcf. The wallboards produced by the method generate significantly less dust during working.