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    • 3. 发明授权
    • Synthetic amorphous sodium aluminosilicate base exchange materials
    • 合成无定形硅铝酸钠基质交换材料
    • US4213874A
    • 1980-07-22
    • US872968
    • 1978-01-27
    • Lloyd E. WilliamsRobert K. Mays
    • Lloyd E. WilliamsRobert K. Mays
    • C11D3/12C01B33/28C02B1/44C11D3/14
    • C01B33/28C11D3/128
    • A method for producing certain novel finely divided amorphous, precipitated alkali metal alumino silicates having a increased ion exchange properties is disclosed. The products of the invention are produced by commingling and precipitating, under certain controlled conditions, dilute aqueous solutions of an alkali metal silicate and alkali metal aluminate. Significant process variables include the chemical composition and concentration of the reactants, the precipitating temperatures and pH, the sequence and rate of the addition of the reactants and the mixing intensity during the precipitation. The amorphous products of the invention have base or ion exchange capacities equal and/or superior to known crystalline zeolitic base exchangers or absorbents and such may be used for water softening. Their use in detergents is also disclosed.
    • 公开了一种用于生产具有增加的离子交换特性的某些新颖的细碎无定形,沉淀的碱金属铝硅酸盐的方法。 本发明的产品通过在某些受控条件下混合和沉淀碱金属硅酸盐和碱金属铝酸盐的稀水溶液来制备。 显着的过程变量包括反应物的化学成分和浓度,沉淀温度和pH,反应物的添加顺序和速率以及沉淀过程中的混合强度。 本发明的无定形产物的碱或离子交换容量等于和/或优于已知的结晶沸石基础交换剂或吸收剂,并且可以用于水软化。 还公开了它们在洗涤剂中的用途。
    • 4. 发明授权
    • Production of high capacity inorganic crystalline base exchange materials
    • 生产高能无机晶体基质交换材料
    • US4041135A
    • 1977-08-09
    • US599232
    • 1975-07-25
    • Lloyd E. WilliamsRobert K. MaysJoseph E. Wagner, III
    • Lloyd E. WilliamsRobert K. MaysJoseph E. Wagner, III
    • B01J39/14B01D20060101B01D15/00B01J20060101C01B20060101C01B33/26C01B39/02C01B39/16C11D9/18C01B33/28
    • C01B33/2823C01B33/2807
    • A method is disclosed for producing inorganic crystalline base exchange materials having high total exchange capacities and specific initial exchange rates which yield well-defined residual concentrations for the elements of Group II of the Periodic Table. The method of the invention includes the concept of controlling the rate of the addition of the reactants and other reaction variables to prevent gel structure formation and to provide a precipitate of discrete particles with a preoriented array of the elements that is predisposed to the final crystalline structure. Recycle of the mother liquor to provide a totally closed system is further disclosed. By preventing the formation of the gel structure it is possible to eliminate cumbersome and costly processing steps and equipment. By varying the precipitation and crystallation conditions, it is possible to control the ultimate crystal size. Recycle allows recovery of the chemical values of the mother liquor and reduces manufacturing cost. Throughput is also significantly increased. Specific and significant process steps include: make-up of the reactants, purification purge of the reactants, precipitation, crystallization, decanting and quench, solids separation and recycle of the mother liquor to provide the closed system. Recycling includes concentration and desalination. The method of the invention further includes particularly unique processing steps comprising solids separation and countercurrent washing.
    • 公开了一种用于生产具有高总交换容量和特定初始交换率的无机结晶基交换材料的方法,其产生周期表第II组元素的明确的残留浓度。 本发明的方法包括控制反应物的加入速率和其它反应变量的概念,以防止凝胶结构形成并提供离散颗粒的沉淀物,该沉淀物具有倾向于最终结晶结构的元素的预取向阵列 。 进一步公开母液的再循环以提供完全封闭的系统。 通过防止凝胶结构的形成,可以消除麻烦和昂贵的处理步骤和设备。 通过改变沉淀和结晶条件,可以控制最终的晶体尺寸。 回收可以回收母液的化学成分,降低制造成本。 吞吐量也显着增加。 具体和重要的方法步骤包括:反应物的组成,反应物的纯化吹扫,沉淀,结晶,倾析​​和骤冷,固体分离和母液的再循环以提供封闭系统。 回收包括集中和淡化。 本发明的方法还包括特别独特的包括固体分离和逆流洗涤的加工步骤。
    • 5. 发明授权
    • Precipitated siliceous products used in paper
    • 纸中沉淀的硅质产品
    • US4260454A
    • 1981-04-07
    • US949720
    • 1978-10-10
    • Satish K. WasonRobert K. Mays
    • Satish K. WasonRobert K. Mays
    • A61K8/25A61Q11/00C01B33/193C09C1/30D21H3/66
    • C09C1/3045A61K8/25A61Q11/00C01B33/193C01P2002/02C01P2004/02C01P2004/03C01P2006/12C01P2006/14C01P2006/16C01P2006/19C01P2006/60C01P2006/80C01P2006/82C01P2006/90
    • A method for producing a precipitated silicon dioxide having a new combination of physical and chemical properties is disclosed. The pigments are produced by acidulating a solution of an alkali metal silicate with an acid under controlled precipitation conditions. The aqueous reaction medium comprising the precipitated silica is then post-conditioned by introducing a second silicate solution into the reaction vessel and thereafter adding additional acid to react with the said second silicate solution. By varying the amount of the silicate employed in the post-conditioning step, a product is obtained which has a unique combination of physical and chemical properties including reduced wet cake moisture content, high surface areas and oil absorptions, improved surface activity, friability, wetting characteristics, and the like. The product has particular utility for use as a rubber reinforcing agent because of its increased surface activity and oil absorption, etc. The product, however, may be used in paints, paper, detergents, dentifrice compositions, molecular sieves, and polymeric compositions. An unexpected discovery of the invention involves the production of a rubber reinforcing silica which has a decreased wet cake moisture content. In one particularly advantageous embodiment, an adduct material, such as aluminum, is added to control the refractive index and surface area of the product.
    • 公开了具有物理和化学特性的新组合的沉淀二氧化硅的制备方法。 颜料通过在受控沉淀条件下用酸酸化碱金属硅酸盐的溶液来制备。 然后将包含沉淀二氧化硅的含水反应介质通过将第二硅酸盐溶液引入反应容器中,然后加入另外的酸与所述第二硅酸盐溶液反应来进行后处理。 通过改变在后处理步骤中使用的硅酸盐的量,获得具有物理和化学性质的独特组合的产品,包括减少的湿饼含水量,高表面积和油吸收,改善的表面活性,脆性,润湿性 特征等。 该产品由于其增加的表面活性和吸油性等而特别用作橡胶增强剂。然而,该产品可用于油漆,纸,洗涤剂,洁齿剂组合物,分子筛和聚合物组合物中。 本发明的意想不到的发现涉及生产具有减少的湿饼含水量的橡胶增强二氧化硅。 在一个特别有利的实施方案中,加入加合物材料,例如铝,以控制产品的折射率和表面积。
    • 6. 发明授权
    • Amorphous precipitated siliceous pigments and methods for their
production
    • 无定形沉淀硅质颜料及其制备方法
    • US4191742A
    • 1980-03-04
    • US854165
    • 1977-11-23
    • Satish K. WasonRobert K. Mays
    • Satish K. WasonRobert K. Mays
    • A61K8/25A61Q11/00C01B33/193A61K7/16
    • A61K8/25A61Q11/00C01B33/193C01P2006/12C01P2006/14C01P2006/16C01P2006/19
    • A method for producing precipitated silica products having a unique combination of physical and chemical properties is disclosed. The products are produced by acidulating a solution of an alkali metal silicate with an acid under carefully controlled precipitation conditions. In accordance with the method, at least a portion of the alkali metal silicate solution theoretically required to react with said acid is initially charged to the reaction vessel. Thereafter, the remaining silicate solution and the acid are simultaneously added to the reaction vessel in a manner to control the alkalinity of the reaction medium. By controlling the percent of the silicate solution initially charged to the reaction vessel, silicas having predetermined properties can be obtained. Properties of the products include low wet cake moisture content, low structure, low oil absorption, high abrasiveness, and low void volume. The products can be used as abrasive and polishing agents in dentifrice compositions. In one particular advantageous embodiment, an adduct material, such as aluminum, is added to control the refractive index of the product.
    • 公开了具有物理和化学特性的独特组合的沉淀二氧化硅产品的制造方法。 产品是通过在精心控制的沉淀条件下用酸酸化碱金属硅酸盐的溶液来制备的。 根据该方法,理论上要求与所述酸反应的至少一部分碱金属硅酸盐溶液最初被加入到反应容器中。 此后,以控制反应介质的碱度的方式将剩余的硅酸盐溶液和酸同时加入到反应容器中。 通过控制最初装入反应容器的硅酸盐溶液的百分比,可以获得具有预定特性的二氧化硅。 产品性能包括湿滤饼含水率低,结构低,吸油量低,磨损性高,空隙体积小。 该产品可用作洁牙剂组合物中的磨料和抛光剂。 在一个特别有利的实施方案中,加入加合物材料,例如铝,以控制产品的折射率。
    • 9. 发明授权
    • Amorphous precipitated silicas and methods for their preparation
    • 无定形沉淀二氧化硅及其制备方法
    • US4067746A
    • 1978-01-10
    • US703496
    • 1976-07-08
    • Satish K. WasonRobert K. Mays
    • Satish K. WasonRobert K. Mays
    • C01B33/187A61K8/00A61K8/25A61Q11/00C01B33/193C09C1/00C09C1/28
    • A61Q11/00A61K8/25C01B33/193C01P2006/12C01P2006/14C01P2006/16C01P2006/19
    • A method for producing precipitated silica products having a unique combination of physical and chemical properties is disclosed. The products are produced by acidulating a solution of an alkali metal silicate with an acid under carefully controlled precipitation conditions. In accordance with the method, at least a portion of the alkali metal silicate solution theoretically required to react with said acid is initially charged to the reaction vessel. Thereafter, the remaining silicate solution and the acid are simultaneously added to the reaction vessel in a manner to control the alkalinity of the reaction medium. By controlling the percent of the silicate solution initially charged to the reaction vessel, silicas having predetermined properties can be obtained. Properties of the products include low wet cake moisture content, low structure, low oil absorption, high abrasivness, and low void volume. The products can be used as abrasive and polishing agents in dentifrice compositions. In one particular advantageous embodiment, an adduct material, such as aluminum, is added to control the refractive index of the product.
    • 公开了具有物理和化学特性的独特组合的沉淀二氧化硅产品的制造方法。 产品是通过在精心控制的沉淀条件下用酸酸化碱金属硅酸盐的溶液来制备的。 根据该方法,理论上要求与所述酸反应的至少一部分碱金属硅酸盐溶液最初被加入到反应容器中。 此后,以控制反应介质的碱度的方式将剩余的硅酸盐溶液和酸同时加入到反应容器中。 通过控制最初装入反应容器的硅酸盐溶液的百分比,可以获得具有预定特性的二氧化硅。 产品性能包括低湿饼含水量低,结构低,吸油率低,磨蚀性高,空隙率低。 该产品可用作洁牙剂组合物中的磨料和抛光剂。 在一个特别有利的实施方案中,加入加合物材料,例如铝,以控制产品的折射率。