公开(公告)号：WO2006138277A3

公开(公告)日：2006-12-28

申请号：PCT/US2006/022936

申请日：2006-06-13

Applicant: UNITED STATES GYPSUM COMPANY ,  LETTKEMAN, Dennis, M. ,  SHAKE, Michael, P. ,  LIU, Qingxia ,  WILSON, John, W. ,  RANDALL, Brian ,  BLACKBURN, David, R.

Inventor： LETTKEMAN, Dennis, M. ,  SHAKE, Michael, P. ,  LIU, Qingxia ,  WILSON, John, W. ,  RANDALL, Brian ,  BLACKBURN, David, R.

IPC: C04B11/00

Abstract: An improved gypsum slurry that includes water, calcium sulfate hemihydrate, a polycarboxylate dispersant and a modifier. The modifier is chemically configured to improve the efficacy of the polycarboxylate dispersant. Preferred modifiers include cement, lime, slaked lime, soda ash, carbonates, silicates and phosphates.

公开(公告)号：WO2006137997A3

公开(公告)日：2006-12-28

申请号：PCT/US2006/018123

申请日：2006-05-11

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： LIU, Quingxia ,  LETTKEMAN, Dennis, M. ,  WILSON, John, W. ,  RANDALL, Brian, S. ,  BLACKBURN, David, R. ,  SHAKE, Michael, P.

IPC: C04B28/14

Abstract: A slurry is made including water, at least 50% by weight calcium sulfate hemihydrate, and a specific polycarboxylate dispersant prepared using at least three repeating units. A first repeating unit is a vinyl ether-type repeating unit. A second repeating unit includes a maleic acid-type repeating unit. A third repeating unit includes an acrylic acid- type repeating unit. The polymer dispersant has a molecular weight of from about 20,000 to about 80,000 Daltons. The slurry made from this composition can be made at reduced water levels to speed drying and reduce drying costs.

公开(公告)号：WO2006138002A2

公开(公告)日：2006-12-28

申请号：PCT/US2006/018415

申请日：2006-05-11

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： LETTKEMAN, Dennis, M. ,  SHAKE, Michael, P. ,  LIU, Qingxia ,  WILSON, John, W. ,  RANDALL, Brian, S. ,  BLACKBURN, David, R.

IPC: C04B28/14 ,  C04B11/00 ,  B32B1/04

CPC classification number: C04B28/14 ,  Y10T428/232 ,  C04B14/04 ,  C04B22/064 ,  C04B22/10 ,  C04B22/16 ,  C04B24/003 ,  C04B24/2641 ,  C04B2103/408

Abstract: An improved gypsum slurry that includes water, calcium sulfate hemihydrate, a polycarboxylate dispersant and a modifier. The modifier is chemically configured to improve the efficacy of the polycarboxylate dispersant. Preferred modifiers include cement, lime, slaked lime, soda ash, carbonates, silicates and phosphates.

Abstract translation: 改进的石膏浆料，包括水，硫酸钙半水合物，聚羧酸酯分散剂和改性剂。 改性剂经化学配置以改善聚羧酸酯分散剂的功效。 优选的改性剂包括水泥，石灰，熟石灰，苏打灰，碳酸盐，硅酸盐和磷酸盐。

公开(公告)号：WO2013148484A1

公开(公告)日：2013-10-03

申请号：PCT/US2013/033414

申请日：2013-03-22

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： LETTKEMAN, Dennis, M. ,  KALIGIAN, Raymond, A., II ,  CLOUD, Michael, L. ,  WILSON, John, W.

IPC: C04B11/00 ,  C04B20/10

CPC classification number: C04B11/007 ,  C04B11/024 ,  C04B20/1018 ,  C04B11/0283

Abstract: A method for preparing a modified beta-stucco from calcined natural rock gypsum that includes preparing a solution of liquid diethylene-triamine-pentaacetic acid in water, applying the solution onto beta-stucco while hot from the calciner, forming a wetted beta-stucco, and allowing the wetted stucco to dry and heal, forming the modified beta-stucco.

Abstract translation: 一种从煅烧天然石膏制备改性β-灰泥的方法，其包括制备液体二亚乙基 - 三胺五乙酸在水中的溶液，将该溶液在煅烧炉热的同时将该溶液施加到β-灰泥上，形成润湿的β-灰泥， 并且允许湿润的灰泥干燥和愈合，形成改性的β-灰泥。

公开(公告)号：WO2009055337A1

公开(公告)日：2009-04-30

申请号：PCT/US2008/080490

申请日：2008-10-20

Applicant: UNITED STATES GYPSUM COMPANY ,  LETTKEMAN, Dennis ,  WILSON, John, W. ,  KALIGIAN, Raymond, II ,  BALL, Brian, K.

Inventor： LETTKEMAN, Dennis ,  WILSON, John, W. ,  KALIGIAN, Raymond, II ,  BALL, Brian, K.

IPC: C04B16/00

CPC classification number: C04B28/146 ,  C04B14/06 ,  C04B24/18 ,  C04B24/38 ,  C04B40/0028

Abstract: An example embodiment of a mixture to be employed in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound comprises about 50 % to about 98 % by weight calcium sulfate hemihydrate, about 0.002 % to about 1 % by weight polysaccharide, and about 0.02 % to about 2.5 % by weight of a lignosulfanate.

Abstract translation: 与水结合使用以制备水合以形成高强度地板化合物的浆料的混合物的示例性实施方案包含约50％至约98％重量的硫酸钙半水合物，约0.002％至约1％重量的多糖 ，和约0.02重量％至约2.5重量％的木质素磺酸盐。

公开(公告)号：WO2006138289A3

公开(公告)日：2006-12-28

申请号：PCT/US2006/022956

申请日：2006-06-13

Applicant: UNITED STATES GYPSUM COMPANY ,  LIU, Qingxia ,  SHAKE, Michael, P. ,  BLACKBURN, David, R. ,  WILSON, John, W. ,  RANDALL, Brian ,  LETTKEMAN, Dennis, M.

Inventor： LIU, Qingxia ,  SHAKE, Michael, P. ,  BLACKBURN, David, R. ,  WILSON, John, W. ,  RANDALL, Brian ,  LETTKEMAN, Dennis, M.

IPC: C04B24/04

Abstract: A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and the second repeating unit is a vinyl or allyl group bound to a polyether by an ether linkage. The slurry can be made into a gypsum panel.

公开(公告)号：WO2006138273A3

公开(公告)日：2006-12-28

申请号：PCT/US2006/022932

申请日：2006-06-13

Applicant: UNITED STATES GYPSUM COMPANY ,  LIU, Qingxia ,  BLACKBURN, David, R. ,  SHAKE, Michael, P. ,  RANDALL, Brian ,  WILSON, John, W. ,  LETTKEMAN, Dennis, M.

Inventor： LIU, Qingxia ,  BLACKBURN, David, R. ,  SHAKE, Michael, P. ,  RANDALL, Brian ,  WILSON, John, W. ,  LETTKEMAN, Dennis, M.

IPC: C04B28/14

Abstract: In a method of making a gypsum slurry, a polycarboxylate dispersant, a modifier and a hydraulic material comprising stucco are selected for use in the slurry. These components are then combined with water to form a slurry, where the modifier is added to the slurry prior to formation of a slurry phase by the water, the stucco and the dispersant. The modifier has been shown to be less effective when added after the dispersant and stucco have been contacted in an aqueous slurry. In a preferred embodiment, an amount of stucco is obtained and the modifier and dispersant are selected. A predissolved solution of a dispersant and modifier is prepared in water to form a solution prior to the addition of the stucco. After mixing the solution, the stucco is added to form the slurry. Optionally, the slurry is then shaped into a product and allowed to set.

公开(公告)号：WO2006137999A2

公开(公告)日：2006-12-28

申请号：PCT/US2006/018125

申请日：2006-05-11

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： LETTKEMAN, Dennis, M. ,  WILSON, John, W. ,  BEDWELL, William, K.

IPC: C04B28/14 ,  C04B11/00 ,  B32B13/00

CPC classification number: C04B28/147 ,  C04B2111/00146 ,  C04B2111/10 ,  C04B2111/60 ,  C04B22/10 ,  C04B24/26 ,  C04B24/2647 ,  C04B24/38 ,  C04B2103/12 ,  C04B2103/22 ,  C04B2103/44 ,  C04B2103/50 ,  C04B2103/54 ,  C04B2103/67 ,  C04B7/02 ,  C04B22/064 ,  C04B22/16

Abstract: A composition is disclosed for a mixture to be used in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound. The mixture includes from about 50% to about 98% by weight calcium sulfate hemihydrate. A three repeating unit polycarboxylate dispersant is included in the mixture in amounts from about 0.2% to about 10% by weight. The repeating units include a polyether repeating unit, an acrylic acid-type repeating unit and a maleic acid-type repeating unit. A modifier that enhances the efficacy of the dispersant is also a component of the mixture. When combined with recommended amounts of water, a slurry is formed that is useful as a flooring composition.

Abstract translation: 公开了一种用于与水结合使用以制备水合物以形成高强度地板化合物的浆料的混合物的组合物。 该混合物包含约50％至约98％重量的硫酸钙半水合物。 混合物中含有三种重复单元多羧酸盐分散剂，其量为约0.2％至约10％重量。 重复单元包括聚醚重复单元，丙烯酸型重复单元和马来酸型重复单元。 增强分散剂功效的改性剂也是混合物的组分。 当与推荐量的水结合时，形成可用作地板组合物的浆料。