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    Precipitated silica with special surface characteristic
    1.
    发明专利
    Precipitated silica with special surface characteristic 有权
    具有特殊表面特性的预处理二氧化硅

    公开(公告)号：JP2008013429A

    公开(公告)日：2008-01-24

    申请号：JP2007140596

    申请日：2007-05-28

    Applicant: Degussa Gmbh ,  デグサ ゲーエムベーハーDegussa GmbH

    Inventor： PANZ CHRISTIAN ,  OBLADEN HELGA ,  ALLERDISSE RENE ,  MEIER KARL ,  RUF MARKUS ,  KEMPF MICHAEL ,  SCHOLZ MARIO DR ,  KUHN DIETER

    IPC: C01B33/193 ,  C08K3/36 ,  C08L83/06 ,  C09D183/04 ,  C09J183/04 ,  C09K3/10

    CPC classification number: C09K3/1018 ,  C01B33/193 ,  C08K3/36

    Abstract: PROBLEM TO BE SOLVED: To solve such problems that the thickeners used for RTV one-component system silicone rubber include silicas and in view of the sensitivity to hydrolysis of the silicone sealants, these silicas must introduce as little moisture as possible into the system, thus using fumed silicas almost exclusively to date for such application and besides, hydrophilic precipitated silicas have not been used to date on account of their high moisture content. SOLUTION: There are provided the precipitated silicas having an SiOH-isolated absorbance ratio equal to or greater than 1 and characterized in that its silanol group density is 0.5-3.5 SiOH/nm 2 . COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题为了解决用于RTV单组分体系硅橡胶的增稠剂包括二氧化硅的问题，并且考虑到硅氧烷密封剂水解的敏感性，这些二氧化硅必须将尽可能少的水分引入到 系统，因此使用几乎专门用于这种应用的热解法二氧化硅，此外，由于其高含水量，迄今为止还没有使用亲水性沉淀二氧化硅。 解决方案：提供具有等于或大于1的SiOH分离的吸光度比的沉淀二氧化硅，其特征在于其硅烷醇基密度为0.5-3.5SiOH / nm 2 。 版权所有（C）2008，JPO＆INPIT

    Hydrophilic silica for sealing compound
    3.
    发明专利
    Hydrophilic silica for sealing compound 有权
    用于密封化合物的水解硅胶

    公开(公告)号：JP2007314415A

    公开(公告)日：2007-12-06

    申请号：JP2007140408

    申请日：2007-05-28

    Applicant: Degussa Gmbh ,  デグサ ゲーエムベーハーDegussa GmbH

    Inventor： PANZ CHRISTIAN ,  OBLADEN HELGA ,  ALLERDISSE RENE ,  MEIER KARL ,  RUF MARKUS ,  KEMPF MICHAEL ,  SCHOLZ MARIO DR ,  KUHN DIETER

    IPC: C01B33/18 ,  C08K3/36 ,  C08L83/04

    CPC classification number: C09K3/1018 ,  C01B33/193

    Abstract: PROBLEM TO BE SOLVED: To provide hydrophilic precipitated silica which is especially suitable as a thickening agent and reinforcing agent in an elastomer mixture, in particular, in an RTV type one-component-based silicone rubber formulation. SOLUTION: The hydrophilic precipitated silica is characterized by having following physicochemical parameters: an equilibrium water content (at relative humidity (r.F) of 70%/20°C) of 0.5-5.0 mass%, a BET surface area of 50-250 m 2 /g, a CTAB surface area of 50-250 m 2 /g, and a DBP (anhydrous) absorption of 200-350 g/100g. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供特别适用于弹性体混合物中的增稠剂和增强剂的亲水性沉淀二氧化硅，特别是在RTV型单组分基硅橡胶制剂中。 解决方案：亲水沉淀二氧化硅的特征在于具有以下物理化学参数：平衡含水量（相对湿度（rF）为70％/ 20℃）为0.5-5.0质量％，BET表面积为50- 250m 2 / SP / g，CTAB表面积为50-250m 2 / SP / g，DBP（无水）吸收为200-350g / 100g。 版权所有（C）2008，JPO＆INPIT

    PRECIPITATED SILICA HAVING HYPER-ORDER STRUCTURE
    4.
    发明专利
    PRECIPITATED SILICA HAVING HYPER-ORDER STRUCTURE 审中-公开

    公开(公告)号：JP2002255534A

    公开(公告)日：2002-09-11

    申请号：JP2001358187

    申请日：2001-11-22

    Applicant: DEGUSSA

    Inventor： KUHLMANN ROBERT ,  MEIER KARL

    IPC: A23K1/175 ,  B01J21/08 ,  B01J32/00 ,  B01J35/10 ,  C01B33/12 ,  C01B33/143 ,  C01B33/193 ,  C08K3/36

    Abstract: PROBLEM TO BE SOLVED: To obtain a precipitated silica having improved DBP absorption. SOLUTION: This precipitated silica has a pH value of 3 to 8, a BET surface area of 400 to 600 m /g, a DBP absorption of 380 to 420 g/100 g, a bulk density of 100 to 200 g/L and a residue on ALPINE sieve with >63 μm size of 0.1 to 40%, and the method for producing the precipitated silica comprises the steps of (a) adding water and sulfuric acid simultaneously within at least 100 minutes to an aqueous material heated at 35 to 45 deg.C under shear by agitation maintaining the pH value of 6 to 7, wherein the addition is intermitted for 60 to 120 minutes, and the solid concentration is adjusted to 36 to 42 g/L upon completion of the addition, (b) filtering the solid and washing the filtered cake, and (c) drying the solid in a short time.

    METHOD OF MANUFACTURING HYDROPHOBIC PRECIPITATED SILICA
    6.
    发明专利
    METHOD OF MANUFACTURING HYDROPHOBIC PRECIPITATED SILICA 审中-公开

    公开(公告)号：JP2003137532A

    公开(公告)日：2003-05-14

    申请号：JP2002225135

    申请日：2002-08-01

    Applicant: DEGUSSA

    Inventor： MEIER KARL ,  OBLADEN HELGA ,  STOFFELS RALF ,  PANZ CHRISTIAN ,  SCHMOLL RALF

    IPC: C01B33/18 ,  C08K3/36 ,  C08L83/04 ,  C09C1/30

    Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing hydrophobic precipitated silica. SOLUTION: a) A mixture of organopolysiloxane derivative and precipitated silica is manufactured; b) the conditioning of the mixture is performed at 10-150 deg.C for 5-72 hours; c) oxidation heating is performed using oxidation gas at a high temperature of >300 deg.C. Thereby the precipitated silica is obtained which is covalent bonded with carbon in a compounded material of a silicone rubber, and having a high load factor, low moisture absorbance, low thickening function, good strengthening performance, and moreover high whiteness.

    PARTIALLY HYDROPHOBIC PRECIPITATED SILICIC ACID, ITS PRODUCTION AND DEFOAMING AGENT INCLUDING THE SAME
    7.
    发明专利
    PARTIALLY HYDROPHOBIC PRECIPITATED SILICIC ACID, ITS PRODUCTION AND DEFOAMING AGENT INCLUDING THE SAME 失效

    公开(公告)号：JP2000159516A

    公开(公告)日：2000-06-13

    申请号：JP34914099

    申请日：1999-12-08

    Applicant: DEGUSSA

    Inventor： LUX HEINZ-GUNTER ,  MEIER KARL ,  MULLER ASTRID ,  OELMULLER ROLF ,  RAMB ANJA

    IPC: C01B33/18 ,  A01N25/08 ,  A01N25/22 ,  A01N57/12 ,  B01D19/04 ,  C09C1/30 ,  C11D3/12

    Abstract: PROBLEM TO BE SOLVED: To provide partially hydrophobic precipitated silicic acid suitable as a carrier for functional substances sensitive to hydrolysis. SOLUTION: This partially hydrophobic precipitated silicic acid is produced by blending an hydrophobicity agent with precipitated silicic acid suspension in a short duration time at low pH value, by the solid-liquid separation through filtration, by washing the solid so as for it to include salts and by drying it, followed by heat treatment and then by grinding the heat-treated solid. The partially hydrophobic precipitated silicic acid has 10-49% wettability in methanol and >250 g/100 g DBP absorption (moisture-free) or 1-12 μm average particle diameter and/or 0.3-1.85% carbon content and/or 2.6-10.0% loss on drying and/or 5.5-10.0 pH value and is applicable to a functional substance formulated product, a formulated product of a functional substance sensitive to hydrolysis and a defoaming agent.

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