公开(公告)号：US4153470A

公开(公告)日：1979-05-08

申请号：US907360

申请日：1978-05-18

申请人： Dieter Stahl ,  Ernst Puchel

发明人： Dieter Stahl ,  Ernst Puchel

IPC分类号： C04B24/00 ,  C04B28/14 ,  C04B11/14

CPC分类号： C04B24/00 ,  C04B28/14

摘要： Foamed gypsum is produced by mixing gypsum with water in the presence of additives serving for liquefying the gypsum and for adjusting the starting period, and by adding thereto a mixture of isocyanate compounds and polyurethane preadducts.After a starting period of about five minutes a foaming process occurs, which is completed after about 20 minutes and furnishes a foamed gypsum after setting. The foamed gypsum has a density from 0.45 to 0.8 g/cc, whereas unfoamed gypsum has a density of 1.66 g/cc.The process may be performed in special molds, so that after setting specially formed elements are obtained, e.g. sandwich elements.

摘要翻译： 发泡石膏是通过在用于液化石膏的添加剂和调整起始时间的情况下将石膏与水混合，并通过向其中加入异氰酸酯化合物和聚氨酯预加合物的混合物而制备的。

公开(公告)号：US4136687A

公开(公告)日：1979-01-30

申请号：US846049

申请日：1977-10-27

申请人： Winifred C. Dabroski

发明人： Winifred C. Dabroski

IPC分类号： A61L15/07 ,  A61F13/04 ,  A61L15/08 ,  C04B24/42 ,  C04B11/14

CPC分类号： C04B24/42 ,  A61F13/04 ,  A61L15/08

摘要： The instant invention relates to a novel water resistant orthopedic bandage which includes a hardenable plaster of Paris composition, including a reactive silicone polymer supported on a flexible carrier. The amount of plaster of Paris may range from 100 to 600 grams per square yard of carrier, preferably from 396 to 425. The amount of reactive silicone may range from 0.5 to 20 parts per hundred parts plaster of Paris, preferably from 0.5 to 10, e.g. about 4 parts silicone per 100 parts plaster of Paris. The novel orthopedic bandages of the instant invention show improved water resistance throughout the curing cycle of the bandage. Also, when compared to the prior art plaster of Paris bandages the instant bandages have improved "green strength".

摘要翻译： 本发明涉及一种新型防水整形外科绷带，其包括可硬化的巴黎组合物，包括支撑在柔性载体上的反应性硅氧烷聚合物。 巴黎的石膏量可以在100至600克/平方码的载体范围内，优选为396至425.反应性硅酮的量可以为每百份石膏巴黎0.5至20份，优选0.5至10份， 例如 每100份石膏约4份硅胶。 本发明的新型整形外科绷带在绷带的整个固化周期中显示改进的耐水性。 此外，与现有技术的巴黎绷带膏相比，即时绷带具有改善的“绿色强度”。

公开(公告)号：US4124406A

公开(公告)日：1978-11-07

申请号：US723174

申请日：1976-09-14

申请人： Helmut Knorre ,  Manfred Langer ,  Wolfgang Fischer

发明人： Helmut Knorre ,  Manfred Langer ,  Wolfgang Fischer

IPC分类号： C04B24/06 ,  C04B11/14

CPC分类号： C04B24/06

摘要： Gypsum plaster having a delayed setting time is made by adding a mixture of mesotartaric acid and l-tartaric acid or d,l-tartaric acid or a mixture of l-tartaric acid and d,l-tartaric acid to the gypsum plaster.

摘要翻译： 具有延迟凝固时间的石膏膏通过将石脑磺酸和1-酒石酸或d，1-酒石酸或1-酒石酸和d，l-酒石酸的混合物的混合物加入到石膏膏中来制备。

公开(公告)号：US4028127A

公开(公告)日：1977-06-07

申请号：US665360

申请日：1976-03-10

申请人： Fred John Maske ,  Robert Nordgren

发明人： Fred John Maske ,  Robert Nordgren

IPC分类号： C04B24/38 ,  C04B11/14

CPC分类号： C04B24/38

摘要： Patching cracks and holes with a blend of a gypsum cement and the reaction product of a hydroxyalkyl ether of guar and glyoxal.

摘要翻译： 用石膏混合物和瓜尔胶和乙二醛的羟烷基醚的反应产物来修补裂缝和孔。

公开(公告)号：US4021259A

公开(公告)日：1977-05-03

申请号：US598598

申请日：1975-07-24

申请人： Koei Komatsu ,  Kunihiro Harada ,  Seiji Aotani ,  Akio Itabashi

发明人： Koei Komatsu ,  Kunihiro Harada ,  Seiji Aotani ,  Akio Itabashi

IPC分类号： C04B22/08 ,  C04B28/14 ,  C04B11/14

CPC分类号： C04B28/14 ,  C04B22/08

摘要： A gypsum composition obtained by molding and drying an aqueous slurry comprising calcined gypsum, polyvinyl alcohol, and at least one metal compound. The composition has high surface hardness and high water resistance.

摘要翻译： 通过将包含煅烧石膏，聚乙烯醇和至少一种金属化合物的含水浆料模制和干燥获得的石膏组合物。 该组合物具有高表面硬度和高耐水性。

公开(公告)号：US3947285A

公开(公告)日：1976-03-30

申请号：US389763

申请日：1973-08-20

申请人： Kenneth Wood Jones ,  David John Hazeldine

发明人： Kenneth Wood Jones ,  David John Hazeldine

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

CPC分类号： C04B28/14 ,  C04B2103/10

摘要： The invention relates to an improved accelerator for gypsum board manufacture, the accelerator containing a ground mixture of gypsum and a long chain fatty carboxylic acid, e.g. stearic acid, or a salt thereof, to the manufacture of the accelerator, and to its use in gypsum board production. The accelerator is less liable to deterioration on storage than conventional gypsum accelerators, and its use yields gypsum board of improved properties.

摘要翻译： 本发明涉及一种用于石膏板制造的改进促进剂，该加速剂含有石膏和长链脂肪羧酸的研磨混合物，例如， 硬脂酸或其盐，用于加速剂的制造，以及其在石膏板生产中的用途。 与常规石膏加速器相比，加速器的储存容易性降低，其使用产生改进的性能的石膏板。

公开(公告)号：US3876439A

公开(公告)日：1975-04-08

申请号：US31945572

申请日：1972-12-29

申请人： SCHNEIDER GORDON L

发明人： SCHNEIDER GORDON L

IPC分类号： C09K17/04 ,  C09K17/06 ,  C09K17/40 ,  A01N7/02 ,  C04B11/14

CPC分类号： C09K17/04 ,  C09K17/06 ,  C09K17/40 ,  Y10S106/90 ,  Y10S106/901

摘要： Disclosed is a soil stabilizing agent consisting of a source of calcium, such as calcium carbonate, and a spent sulfuric acid, in a water solution and a method for applying the same. Certain chloride and sulfate materials, such as aluminum and ferric chloride and aluminum and ferrous sulfate, may be added to the soil with the stabilizing agent to provide enhanced results in particular soils. The stabilizing agent is applied with sufficient water to thoroughly wet the soil and thus disperse the agent through the soil and the treated soil is then worked to accomplish thorough mixing. An alternate method of application is also disclosed in which the calcium source material, and the chloride or sulfate materials if used, are applied dry in powdered or granular form to the soil surface, the soil and materials are treated with a solution of water and a spent sulfuric acid sufficient to thoroughly wet the soil to the desired depth of treatment and disperse the chemicals therein, and the chemicals and soil are then worked until thorough mixing is assured.

公开(公告)号：US3592670A

公开(公告)日：1971-07-13

申请号：US3592670D

申请日：1969-02-03

申请人： NAT GYPSUM CO

发明人： KOSSUTH DONALD A ,  WINKOWSKI DANIEL A ,  KLEMS JOHN W

IPC分类号： C04B28/14 ,  C04B11/14 ,  C04B11/16

CPC分类号： C04B28/14 ,  C04B2103/12 ,  Y02W30/97 ,  C04B18/26 ,  C04B22/143 ,  C04B24/383 ,  C04B40/00

摘要： A METHOD OF ACCELERATING THE SETTING TIME OF A CALCINED GYPSUM SLURRY DURING THE MANUFACTURE OF A GYPSUM PRODUCT SUCH AS WALLBOARD OR THE LIKE COMPRISING THE USE OF AN AQUEOUS SUSPENSION OF FRESHLY HYDRATED, FINE, CALCIUM SUIFATE DIHYDRATE CRYSTALS AND A SATURATED CALCIUM SULFATE DIHYDRATE SOLUTION, SAID SATURATED CALCIUM SULFATE DIHYDRATE SOLUTION COMPRISING A MAJOR PERCENTAGE BY VOLUME OF THE TOTAL WATER CONTENT OF THE CALCINED GYPSUM SLURRY FROM WHICH THE SAID GYPSUM IS MADE.

公开(公告)号：US4341560A

公开(公告)日：1982-07-27

申请号：US191824

申请日：1980-09-26

申请人： Masumi Saito ,  Eiichi Hirai ,  Masao Endo ,  Toru Nishino

发明人： Masumi Saito ,  Eiichi Hirai ,  Masao Endo ,  Toru Nishino

IPC分类号： C04B24/42 ,  C04B28/14 ,  C04B38/02 ,  C04B11/14

CPC分类号： C04B28/14 ,  C04B2111/27

摘要： The present invention provides a gypsum molded product having excellent waterproof properties without impaired strength by adding alkaline metal alkylsiliconates or phenylsiliconates together with calcium hydroxide or calcium oxide to gypsum; poly(.alpha.,.beta.-unsaturated carboxylic acid) may be used in combination with the above, if desired. According to the present invention, the preparation of a gypsum molded product, particularly a gypsum from desulfurization of exhaust gas, is contemplated.

摘要翻译： 本发明提供一种具有优异的防水性能的石膏模制产品，而不会因为将强碱性金属烷基硅酸盐或苯基硅氧烷与氢氧化钙或氧化钙一起加入到石膏中而受损， 如果需要，聚（α，β-不饱和羧酸）可以与上述组合使用。 根据本发明，预期石膏模制产品，特别是废气脱硫的石膏的制备。

公开(公告)号：US4298394A

公开(公告)日：1981-11-03

申请号：US52754

申请日：1979-06-28

申请人： Peter A. Leeming ,  Dimitrios Mitakidis ,  Peter F. Woodrow

发明人： Peter A. Leeming ,  Dimitrios Mitakidis ,  Peter F. Woodrow

IPC分类号： C04B24/16 ,  C04B24/02 ,  C04B24/20 ,  C04B28/14 ,  C04B11/14

CPC分类号： C04B40/0039 ,  C04B28/14 ,  C04B2103/12 ,  C04B2103/40 ,  C04B2111/0062 ,  Y02W30/97

摘要： A gypsum set accelerator for use in the production of gypsum wallboard comprises a tube or ball milled mixture of gypsum and up to 20 percent by weight of the gypsum of a synthetic water-soluble solid surfactant. A process for the manufacture of gypsum wallboard is also described comprising spreading between paper sheets an aqueous slurry of calcium sulphate hemihydrate defined above at a rate of between 0.5 and 15 kilograms per 100 square meters (1 and 30 pounds per 1000 square feet) of gypsum wallboard, and allowing the slurry to set. The accelerator has high potency and appears to provide wallboard of increased compressive strength.

摘要翻译： 用于生产石膏墙板的石膏加速器包括石膏管或球磨混合物和高达20重量％的合成水溶性固体表面活性剂石膏的石膏。 还描述了用于制造石膏墙板的方法，其包括以0.5至15千克/ 100平方米（1和30磅/ 1000平方英尺）石膏之间的速率在纸张之间铺展上述定义的硫酸钙半水合物的水性浆液 墙板，并允许浆料固化。 加速器具有很高的效力，并且似乎提供了增加抗压强度的墙板。