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    • 2. 发明授权
    • Precipitated silicas
    • 沉淀二氧化硅
    • US5846506A
    • 1998-12-08
    • US891448
    • 1997-07-10
    • Heinz EschUdo GorlRobert KuhlmannRalf Rausch
    • Heinz EschUdo GorlRobert KuhlmannRalf Rausch
    • C01B33/193C01B33/142
    • C01B33/193C01P2004/50C01P2004/61C01P2004/62C01P2006/12C01P2006/14C01P2006/19
    • A precipitated silica with the following physicochemical properties: ______________________________________ BET surface area 35 to 350 m.sup.2 /g BET/CTAB surface area ratio 0.8 to 1.1 Pore volume, PV 1.6 to 3.4 ml/g Silanol group density (V2 = 6 to 20 ml NaOH consumption) Average aggregate size 250 to 1500 nm CTAB surface area 30 to 350 m.sup.2 /g DBP value 150 to 300 ml/100 g V.sub.2 /V.sub.1 by Hg porosimetry 0.19 to 0.46 DBP/CTAB 1.2 to 2.4. ______________________________________ is produced by reacting alkali silicate with mineral acids at temperatures of 60.degree. to 95.degree. C. while maintaining a pH of 7.5 to 10.5 and continuously stirring, continuing the reaction to a solids concentration in the precipitation suspension of 90 to 120 g/l, adjusting the pH value to a value of less than or equal to 5, filtering out, washing, drying and optionally grinding or granulating the precipitated silica. The precipitated silica is used as a filler in vulcanizable rubber compounds and vulcanizates.
    • 具有以下物理化学性质的沉淀二氧化硅:BET表面积35至350m 2 / g-BET / CTAB表面积比0.8至1.1-孔体积,PV 1.6至3.4ml / g - 硅烷醇密度(V2 = 6至20 ml - NaOH消耗) - 平均骨料大小250至1500nm - CTAB表面积30至350m 2 / g - DBP值150至300ml / 100g -V2 / V1通过Hg孔隙率法0.19至0.46-DBP / CTAB 1.2至2.4 。 - 通过使碱性硅酸盐与无机酸在60℃至95℃的温度下反应,同时保持pH为7.5至10.5并连续搅拌,将反应持续至90至120g / l的沉淀悬浮液中的固体浓度 ,将pH值调节至小于或等于5的值,过滤,洗涤,干燥和任选研磨或造粒沉淀二氧化硅。 沉淀二氧化硅用作可硫化橡胶化合物和硫化橡胶中的填料。
    • 6. 发明授权
    • Efficient matting agents based on precipitated silicas
    • 基于沉淀二氧化硅的高效消光剂
    • US07488382B2
    • 2009-02-10
    • US10656164
    • 2003-09-08
    • Juergen SchubertRobert KuhlmannHans Dieter Christian
    • Juergen SchubertRobert KuhlmannHans Dieter Christian
    • C04B14/00
    • C01B33/193C01P2004/61C01P2006/10C01P2006/11C01P2006/12C01P2006/19C01P2006/60C01P2006/80C09C1/3018C09D7/42Y10T428/2982Y10T428/2993
    • A precipitated silica characterized by BET350-550 m2/g DBP number350-400 g/100 g d505-15 μm, and tamped density20 to less than 70 g/l.
    • 一个沉淀二氧化硅,其特征在于
      BET 350-550 m2 / g row> DBP number 350-400 g / 100 g d50 5-15 mum, 夯实密度 20到小于70 g /
        • 7. 发明授权
        • Precipitated silica
        • 沉淀二氧化硅
        • US5871867A
        • 1999-02-16
        • US954858
        • 1997-10-21
        • Ralf RauschHeinz EschRobert KuhlmannGuenter TuerkKarl MeierWalter Meon
        • Ralf RauschHeinz EschRobert KuhlmannGuenter TuerkKarl MeierWalter Meon
        • C01B33/143C01B33/18C01B33/193C08K3/36C08L23/06H01M2/14H01M2/16
        • H01M2/14C01B33/193H01M2/1646C01P2004/51C01P2004/61C01P2006/12C01P2006/19C01P2006/80C01P2006/82
        • Precipitated silica with a sodium sulphate content of 4 to 18 wt. %, particularly with the physical-chemical data:______________________________________Sodium sulphate content: 4-14 wt. %BET surface area (DIN 66131): 100-190 m.sup.2 /gDBP absorption (anhydrous) 208-250 g/100 g(DIN 53601, ASTM D 2414): 3.0-6.5 wt. %(DIN ISO 787/II)Oversize with >63 .mu.m .ltoreq. 10.0 wt. %ALPINE air-jet sieve >150 .mu.m .ltoreq. 0.1 wt. % >250 .mu.m .ltoreq. 0.01 wt. %______________________________________It is prepared by introducing hot water into a precipitation vessel, with stirring, adding water glass, then heating the mixture and maintaining the temperature throughout the remainder of the precipitation period. Water glass and sulphuric acid are added simultaneously during this process. The precipitated silica is then separated from the suspension and the filter cake containing sodium sulphate is dried in a spray drier and ground. The precipitated silica may be used in the production of battery separators.
        • 硫酸钠含量为4〜18重量%的沉淀二氧化硅 %,特别是物理化学数据: - 硫酸钠含量:4-14重量% % - BET表面积(DIN 66131):100-190m2 / g-DBP吸收(无水)208-250g / 100g - (DIN 53601,ASTM D 2414):3.0-6.5wt。 % - (DIN ISO 787 / II) - >63μm超大,10.0wt。 % - ALPINE喷气筛>150μm0.1重量% % - >250μm<0.01wt。 % - 通过将热水引入沉淀容器中,在搅拌下加入水玻璃,然后加热混合物并在整个沉淀期的剩余时间内保持温度而制备。 在此过程中同时加入水玻璃和硫酸。 然后将沉淀的二氧化硅与悬浮液分离,并将含有硫酸钠的滤饼在喷雾干燥器中干燥并研磨。 沉淀二氧化硅可用于生产电池隔板。