公开(公告)号：US20060281837A1

公开(公告)日：2006-12-14

申请号：US11152661

申请日：2005-06-14

申请人： Dennis Lettkeman ,  Qingxia Liu ,  John Wilson ,  Brian Randall ,  David Blackburn ,  Michael Shake

发明人： Dennis Lettkeman ,  Qingxia Liu ,  John Wilson ,  Brian Randall ,  David Blackburn ,  Michael Shake

IPC分类号： C04B28/14 ,  C04B24/26

CPC分类号： C04B28/145 ,  C04B24/2647 ,  C04B2111/0062 ,  C04B7/02 ,  C04B12/04 ,  C04B22/064 ,  C04B22/10 ,  C04B22/143 ,  C04B22/16

摘要： 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：US20070044688A1

公开(公告)日：2007-03-01

申请号：US11490150

申请日：2006-07-20

申请人： David Blackburn ,  Qingxia Liu ,  Michael Shake

发明人： David Blackburn ,  Qingxia Liu ,  Michael Shake

IPC分类号： C04B28/14 ,  C04B28/08

CPC分类号： C04B28/145 ,  C04B20/1066 ,  C04B20/107 ,  C04B2111/0062 ,  Y10T428/2993 ,  C04B14/365 ,  C04B24/2647

摘要： A gypsum slurry includes calcium sulfate hemihydrate, water and calcium sulfate dihydrate is coated with a hydrophilic, dispersible coating. The coating is less soluble than the calcium sulfate hemihydrate to delay exposure of the landplaster to the remainder of the slurry, preventing premature crystallization and the early stiffening that accompanies it. Another embodiment is a gypsum slurry that includes calcium sulfate hemihydrate, a polycarboxylate dispersant, water and coated calcium sulfate dihydrate. In this case, the hydrophilic, dispersible coating is selected to serve as a modifier to enhance the ability of the dispersant to fluidize the gypsum slurry.

摘要翻译： 石膏浆料包括半水合硫酸钙，水和硫酸钙二水合物涂覆有亲水的，可分散的涂层。 涂层的溶解度比硫酸钙半水合物少，以延缓露地坪暴露于泥浆的剩余部分，防止过早结晶和伴随其的早期硬化。 另一个实施方案是包括硫酸钙半水合物，多羧酸盐分散剂，水和包被的硫酸钙二水合物的石膏浆料。 在这种情况下，选择亲水性可分散涂层作为改性剂以增强分散剂使石膏浆液流化的能力。

公开(公告)号：US20060278128A1

公开(公告)日：2006-12-14

申请号：US11152404

申请日：2005-06-14

申请人： Qingxia Liu ,  Michael Shake ,  David Blackburn ,  Stewart Hinshaw

发明人： Qingxia Liu ,  Michael Shake ,  David Blackburn ,  Stewart Hinshaw

IPC分类号： C04B16/08 ,  C04B20/00 ,  C04B16/00 ,  C04B24/08 ,  C04B24/36 ,  C04B28/14 ,  C04B11/00

CPC分类号： C04B28/14 ,  C04B2111/0062 ,  C04B7/02 ,  C04B14/06 ,  C04B22/10 ,  C04B22/16 ,  C04B24/226 ,  C04B24/2647 ,  C04B38/106 ,  C04B40/0028 ,  C04B2103/408

摘要： Effective use of dispersants in wallboard containing foam results from a method where stucco is mixed with a first dispersant and a first quantity of water to form a gypsum slurry. A soap is blended with a second dispersant and a second quantity of water to make a foam. Subsequently, the foam is combined with the slurry. Choice of different first and second dispersants and their relative amounts allows control of the size distribution of the foam bubbles in the slurry and the resulting voids in the gypsum core. Use of the same dispersant in both the mixer and the foam water provides a boost in efficacy of the dispersant.

公开(公告)号：US4266940A

公开(公告)日：1981-05-12

申请号：US16690

申请日：1979-03-02

申请人： David Blackburn ,  Malcolm S. Wild

发明人： David Blackburn ,  Malcolm S. Wild

IPC分类号： D06P1/92 ,  D06P3/70

CPC分类号： D06P1/90 ,  D06P3/702 ,  Y10S8/927

摘要： There is disclosed a process for the coloration of wet spun acrylic and modacrylic fibres in the gel form which comprises using a cationic dye, or its dye bases, which are substantially insoluble in water but soluble or partly soluble in organic solvents. There are also disclosed acrylic fibres so colored.

摘要翻译： 公开了以凝胶形式着色湿纺丙烯酸和改性聚丙烯酸纤维的方法，该方法包括使用基本上不溶于水但可溶于或部分可溶于有机溶剂的阳离子染料或其染料碱。 还公开了如此着色的丙烯酸纤维。