COMPOSITION DE CAOUTCHOUC DIENIQUE POUR PNEUMATIQUE COMPRENANT UNE SILICE SPECIFIQUE COMME CHARGE RENFORCANTE
    31.
    发明申请
    COMPOSITION DE CAOUTCHOUC DIENIQUE POUR PNEUMATIQUE COMPRENANT UNE SILICE SPECIFIQUE COMME CHARGE RENFORCANTE 审中-公开
    用于作为增强填料的特殊硅的轮胎用二烯橡胶组合物

    公开(公告)号:WO2003016387A1

    公开(公告)日:2003-02-27

    申请号:PCT/EP2002/009069

    申请日:2002-08-13

    IPC分类号: C08K3/36

    摘要: L'invention a trait à une composition de caoutchouc diénique à base d'au moins (i) un élastomère diénique, (ii) une charge inorganique renforçante, (iii) un agent de couplage assurant la liaison entre la charge renforçante et l'élastomère, caractérisée en ce que ladite charge inorganique comprend au moins une silice possédant les caractéristiques suivantes: (a) une surface spécifique BET entre 45 et 400 m 2 /g et de préférence entre 50 et 300 m 2 /g; (b) une surface spécifique CTAB entre 40 et 380 m 2 /g et de préférence entre 45 et 280 m 2 /g; (c) une taille moyenne (en masse) de particules, notée dw, de 20 à 300 nm; et au moins une des caractéristiques suivantes de préférence deux et plus préférentiellement les trois: (d) une distribution de taille de particules telle que dw ≥ (16500/CTAB)-30; (e) une porosité vérifiant le critère L/IF ≥ -0,0025 CTAB + 0,85; (f) un taux de silanols par unité de surface, noté N SiOH/nm 2 , N SiOH/nm 2 ≤ -0,027 CTAB + 10,5. Ces silices sont susceptibles d'être obtenues selon un procédé de préparation original. L'invention concerne également l'utilisation de ces compositions de caoutchouc diénique pour la fabrication de pneumatiques ou de produits semi-finis destinés aux pneumatiques, ainsi que ces produits et pneumatiques.

    摘要翻译: 本发明涉及由至少(i)一种二烯弹性体,(ii)增强无机填料和(iii)连接增强填料和弹性体的偶联剂制成的二烯橡胶组合物。 本发明的组合物的特征在于所述无机填料包含至少一种具有以下特性的硅:(a)比表面积BET为45-400m 2 / g,优选在50-300μm之间, 2> /克; (b)比表面积CTAB为40至380m 2 / g,优选为45至280m 2 / g; (c)表示为dw的平均粒径(质量)为20〜300nm。 此外,所述填料包括以下特征中的至少一个,优选两个或更好的三个:(d)粒度分布,使得dw> / =(16500 / CTAB)-30; (e)验证标准L / IF> / = 0.0025 CTAB + 0.85的孔隙度; (f)表面单位的硅烷醇的速率,表示为NSiOH / nm 2,NSiOH / nm 2 = 0.027 CTAB + 10.5。 所述二氧化硅可以根据原始制备方法得到。 本发明还涉及所述二烯橡胶组合物用于生产用于轮胎和所述产品和轮胎的轮胎或半成品的用途。

    AMORPHOUS PRECIPITATED SILICA
    33.
    发明申请
    AMORPHOUS PRECIPITATED SILICA 审中-公开
    不规则二氧化硅

    公开(公告)号:WO1997045366A1

    公开(公告)日:1997-12-04

    申请号:PCT/US1997006562

    申请日:1997-04-24

    IPC分类号: C01B33/12

    摘要: Amorphous precipitated silica which may be used to form battery separators of very low shrinkage is characterized by (a) a BET surface area in the range of from 60 to 200 m /g; (b) a CTAB surface area in the range of from 40 to 150 m /g; (c) a DBP oil absorption in the range of from to 180 to 300 cm /100g; (d) a mean ultimate particle size in the range of from 20 to 30 nm; (e) a total intruded volume in the range of from 2.5 to 4 cm /g; (f) an intruded volume in the range of from 0.3 to 1.2 cm /g for pores having diameters in the range of from 20 to 100 nm; and (g) a pore diameter at the maximum of the volume pore size distribution function in the range of from 30 to 200 nm.

    摘要翻译: 可用于形成非常低收缩率的电池隔板的无定形沉淀二氧化硅的特征在于(a)BET表面积在60至200m 2 / g的范围内; (b)CTAB表面积在40至150m 2 / g的范围内; (c)DBP吸油量在180-300厘米3 / 100g的范围内; (d)20-30nm范围内的平均最终粒度; (e)2.5至4cm 3 / g范围内的总入侵体积; (f)直径在20至100nm范围内的孔的侵入体积为0.3-1.2cm 3 / g; 和(g)体积孔径分布函数的最大孔径在30至200nm的范围内。

    NOVEL METHOD FOR PREPARING PRECIPITATED SILICA, NOVEL ZINC-CONTAINING PRECIPITATED SILICAS, AND USE THEREOF FOR REINFORCING ELASTOMERS
    35.
    发明申请
    NOVEL METHOD FOR PREPARING PRECIPITATED SILICA, NOVEL ZINC-CONTAINING PRECIPITATED SILICAS, AND USE THEREOF FOR REINFORCING ELASTOMERS 审中-公开
    用于制备预制二氧化硅,新型含锌含量的硅的新方法及其用于增强弹性体的方法

    公开(公告)号:WO1996030302A1

    公开(公告)日:1996-10-03

    申请号:PCT/FR1996000462

    申请日:1996-03-28

    IPC分类号: C01B33/193

    摘要: A novel method for preparing precipitated silica having a good dispersibility and highly satisfactory reinforcing properties is disclosed. Novel precipitated silicas in the form of a powder, substantially spherical beads or granules are also disclosed. Said silicas are characterised in that they have a CTAB specific surface area of 90-250 m /g, a BET specific surface area of 90-250 m /g, a DOP oil absorption of less than 300 ml/100 g, and a zinc content of 1-5 wt %, and in that the number N of stearic acid molecules consumed per nm of the silica surface, when stearic acid is reacted with said silica in xylene for 2 hours at 120 DEG C, is at least 1. Furthermore, the use of said silicas as reinforcing fillers for elastomers, in particular for enhancing the rheological properties thereof, is disclosed.

    摘要翻译: 公开了一种制备具有良好分散性和非常令人满意的增强性能的沉淀二氧化硅的新方法。 还公开了粉末形式的新型沉淀二氧化硅,基本上为球形的珠粒或颗粒。 所述二氧化硅的特征在于它们的CTAB比表面积为90-250m 2 / g,BET比表面积为90-250m 2 / g,DOP吸油量小于300ml / 100g,锌含量为1-5重量%,其中当二甲苯中的硬脂酸与二氧化硅在二甲苯中反应2小时时,二氧化硅表面消耗的硬脂酸分子数为N, DEG,至少为1.此外,公开了使用所述二氧化硅作为弹性体的增强填料,特别是用于增强其流变性能。

    NOVEL METHOD FOR PREPARING PRECIPITATED SILICA, NOVEL ZINC-CONTAINING PRECIPITATED SILICAS, AND USE THEREOF FOR REINFORCING ELASTOMERS
    36.
    发明申请
    NOVEL METHOD FOR PREPARING PRECIPITATED SILICA, NOVEL ZINC-CONTAINING PRECIPITATED SILICAS, AND USE THEREOF FOR REINFORCING ELASTOMERS 审中-公开
    用于制备预制二氧化硅,新型含锌含量的硅的新方法及其用于增强弹性体的方法

    公开(公告)号:WO1996030301A1

    公开(公告)日:1996-10-03

    申请号:PCT/FR1996000461

    申请日:1996-03-28

    IPC分类号: C01B33/193

    摘要: A novel method for preparing precipitated silica having a good dispersibility and highly satisfactory reinforcing properties is disclosed. Novel precipitated silicas in the form of a powder, substantially spherical beads or granules are also disclosed. Said silicas are characterised in that they have a CTAB specific surface area of 90-250 m /g, a DOP oil absorption of less than 300 ml/100 g, a pore distribution such that the pore volume consisting of pores with a diameter of 175-275 ANGSTROM is less than 50 % of the pore volume consisting of pores with a diameter of at most 400 ANGSTROM , and a zinc content of 1-5 wt %, and in that the number N of stearic acid molecules consumed per nm of the silica surface, when stearic acid is reacted with said silica in xylene for 2 hours at 120 DEG C, is of at least 1. Furthermore, the use of said silicas as reinforcing fillers for elastomers, in particular for enhancing the rheological properties thereof, is disclosed.

    摘要翻译: 公开了一种制备具有良好分散性和非常令人满意的增强性能的沉淀二氧化硅的新方法。 还公开了粉末形式的新型沉淀二氧化硅,基本上为球形的珠粒或颗粒。 所述二氧化硅的特征在于它们的CTAB比表面积为90-250m 2 / g,DOP吸油量小于300ml / 100g,孔分布使孔体积由 直径为175-275的直径小于孔体积的50%,孔体积直径最大为400,锌含量为1-5wt%,其中硬脂酸分子数N为 nm 2的二氧化硅表面,当硬脂酸与二氧化硅在二甲苯中在120℃下反应2小时时,至少为1.此外,使用所述二氧化硅作为弹性体的增强填料,特别是用于增强 其流变性能被公开。

    PRECIPITATED SILICA
    37.
    发明申请
    PRECIPITATED SILICA 审中-公开
    沉淀二氧化硅

    公开(公告)号:WO1995009127A1

    公开(公告)日:1995-04-06

    申请号:PCT/FR1994001143

    申请日:1994-09-29

    IPC分类号: C01B33/193

    摘要: Silicas in the form of powder and substantially spherical beads or granules are characterized by a CTAB specific surface of 140-240 m /g a high ultrasonic disaggregation factor, an average diameter, which is small after ultrasonic disaggregation, and optionally, a porous distribution, the porous volume formed by the pores with a diameter of 175 to 275 ANGSTROM being less than 50 % of the porous volume formed by the pores with diameters of 400 ANGSTROM or less. Said silicas may be used as reinforcing fillers for elastomers. The invention also concerns a method for preparing precipitated silica of the type comprising the reaction of an alkaline metal silicate M with an acidifying agent, resulting in a suspension of precipitated silica, and the separation and drying of said suspension, wherein precipitation is performed as follows; (i) an initial starter is formed comprising a portion of the total quantity of alkaline metal silicate M in the reaction, the silicate concentration (expressed in SiO2) in said starter being less than 20 g/l; (ii) an acidifying agent is added to said initial starter until at least 5 % of the quantity of M2O in said initial starter is neutralized; (iii) the acidifying agent and the remaining quantity of alkaline metal silicate M is added simultaneously so that the ratio of the quantity of added silicate (expressed as SiO2) to the quantity of silica in the initial starter (expressed as SiO2) is greater than 4 and at most 100.

    摘要翻译: 以粉末形式和基本上为球形的珠粒或颗粒形式的硅,其特征在于CTAB比表面积为140-240m 2 / ga高超分解聚集因子,平均直径在超声分解后较小,以及任选的多孔 由直径为175至275的孔隙形成的多孔体积小于由直径为400或更小的孔形成的多孔体积的50%。 所述二氧化硅可用作弹性体的增强填料。 本发明还涉及一种制备包括碱金属硅酸盐M与酸化剂反应的沉淀二氧化硅的方法,导致沉淀二氧化硅的悬浮液以及所述悬浮液的分离和干燥,其中沉淀如下进行 ; (i)初始起动器由反应中的碱金属硅酸盐M的总量的一部分形成,所述起动机中的硅酸盐浓度(以SiO 2表示)小于20g / l; (ii)将酸化剂添加到所述初始起动器中,直到所述初始起动器中M 2 O的量的至少5%被中和为止; (iii)同时添加酸化剂和碱金属硅酸盐M的剩余量,使得添加的硅酸盐的量(以SiO 2表示)与初始起始物中的二氧化硅的量的比例(以SiO 2表示)大于 4和最多100。

    PREPARATION OF ALUMINA HAVING INCREASED POROSITY
    39.
    发明申请
    PREPARATION OF ALUMINA HAVING INCREASED POROSITY 审中-公开
    具有增加的孔隙度的铝的制备

    公开(公告)号:WO1993017967A1

    公开(公告)日:1993-09-16

    申请号:PCT/US1993001680

    申请日:1993-02-25

    IPC分类号: C01F07/02

    摘要: A process for making high porosity boehmite alumina comprising forming an aqueous dispersion of a boehmite alumina which has been obtained by hydrothermally treating an aqueous mixture of a precursor boehmite alumina at a pH of from about 5 to about 9 for a period of time sufficient to convert the greater portion of the precursor boehmite alumina to a colloidal sol, treating the dispersion of the hydrothermally treated alumina to form a viscous gel and subjecting the gel to sufficient shearing force for a sufficient period of time to increase the pore volume by at least 30 % and the median pore radius by at least 20 %.

    摘要翻译: 一种制备高孔隙度勃姆石氧化铝的方法,包括形成勃姆石氧化铝的水性分散体,其通过在约5至约9的pH下水热处理前体勃姆石氧化铝的水性混合物达一个足以转化的时间 将前体勃姆石氧化铝的较大部分加入到胶体溶胶中,处理水热处理的氧化铝的分散体以形成粘性凝胶,并使凝胶足够的剪切力足够长的时间以将孔体积增加至少30% 中值孔半径至少为20%。