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    Pyrogenically produced silicon dioxide powder and silicone sealant containing this powder
    1.
    发明专利
    Pyrogenically produced silicon dioxide powder and silicone sealant containing this powder 有权
    生产硅粉的二氧化硅粉末和含有这种粉末的硅酮密封剂

    公开(公告)号：JP2006193404A

    公开(公告)日：2006-07-27

    申请号：JP2005106833

    申请日：2005-04-01

    Applicant: Degussa Ag ,  デグサ アクチエンゲゼルシャフトDegussa AG

    Inventor： SCHUMACHER KAI ,  KERNER DIETER DR ,  DIENER UWE ,  SCHOLZ MARIO DR

    IPC: C01B33/18 ,  C09D7/12 ,  C09D183/04 ,  C09D201/00 ,  C09K3/10

    CPC classification number: C08K3/36 ,  C01B33/183 ,  C09K3/1018 ,  C08L83/04 ,  C08L21/00

    Abstract: PROBLEM TO BE SOLVED: To provide a silicon dioxide powder displaying a good thickening action combined with a short incorporation time into polymers and good dispersibility in the polymers, particularly silicone polymers.
    SOLUTION: The silicon dioxide powder is pyrogenically produced in the form of aggregates of primary particles having a BET surface area of 150±15 m
    2 /g, wherein the aggregates display an average surface area of 12,000 to 20,000 nm
    2 , an average equivalent circle diameter (ECD) of 90 to 120 nm and an average circumference of 1,150 to 1,700 nm, and the powder is produced by a pyrogenic process.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供显示出良好的增稠作用的二氧化硅粉末，并将聚合物的掺入时间短，并且在聚合物，特别是硅氧烷聚合物中具有良好的分散性。 解决方案：二氧化硅粉末以BET表面积为150±15m 2 / SP / g / g的一次粒子的聚集体的形式热解生产，其中聚集体显示平均表面积 12000〜20,000nm（SPCD）2，平均当量圆直径（ECD）为90〜120nm，平均周长为1150〜1700nm，通过热解法制造粉末。 版权所有（C）2006，JPO＆NCIPI

    Hydrophilic silica for sealing compound
    2.
    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 with special surface characteristic
    3.
    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

    ONE-COMPONENT TYPE SILICONE RUBBER PREPARATION VULCANIZABLE AT ROOM TEMPERATURE CONTAINING HYDROPHOBIC SILICA
    6.
    发明专利
    ONE-COMPONENT TYPE SILICONE RUBBER PREPARATION VULCANIZABLE AT ROOM TEMPERATURE CONTAINING HYDROPHOBIC SILICA 审中-公开

    公开(公告)号：JP2003253120A

    公开(公告)日：2003-09-10

    申请号：JP2003020945

    申请日：2003-01-29

    Applicant: DEGUSSA

    Inventor： SCHOLZ MARIO DR ,  KEMPF MICHAEL ,  PANZ CHRISTIAN ,  KAWAMOTO KENICHI

    IPC: C09K3/10 ,  C08K3/36 ,  C08K5/54 ,  C08L83/04 ,  C09C1/30 ,  C08K5/541

    Abstract: PROBLEM TO BE SOLVED: To provide a one-component type silicone rubber preparation vulcanizable at a room temperature containing hydrophobic silica. SOLUTION: The silicone rubber composition comprises 0.5-60 mass% hydrophobic silica having a carbon content of >3.1%, a methanol wetness of >60%, a reflectance of >94%, a BET/CTAB ratio of >1 and 2 /g, a CTAB surface area of >30 m 2 /g, a water vapor absorption at 30°C under 30RH of n SiR 3-n -O-[SiR 2 O] x -SiR 3-n -Z' n (wherein the variations are as defined in Claims), and therefore, the following effect is obtained: in vulcanizing a silicon rubber, a high reinforcing effect as well an extraordinary low water absorption, a high whiteness and a high accurate control can be attained, and further, a storage stable rheological property can also be attained. COPYRIGHT: (C)2003,JPO

    METHOD FOR IMPROVING STABILITY OF POLYMER
    8.
    发明专利
    METHOD FOR IMPROVING STABILITY OF POLYMER 失效

    公开(公告)号：JP2000129033A

    公开(公告)日：2000-05-09

    申请号：JP29716799

    申请日：1999-10-19

    Applicant: DEGUSSA

    Inventor： MANGOLD HELMUT ,  SCHOLZ MARIO DR ,  SCHACHTELY UWE ,  DELLER KLAUS

    IPC: C08K3/22 ,  C08L101/00 ,  C09C1/36 ,  C08L101/16

    Abstract: PROBLEM TO BE SOLVED: To improve the stability of a polymer against the actions of heat and flame by adding, to a polymer prior to or during processing, iron oxide- containing titanium dioxide having a specific amount of iron oxide and obtained by thermal decomposition. SOLUTION: The iron oxide-containing titanium dioxide having an iron oxide content of 0.05 to 50 wt.% and obtained by thermal decomposition is added to a polymer. As the polymer, there is used a silicone rubber, a silicone oil, a synthetic rubber and/or natural rubber, or a rubbery resin. The iron oxide- containing titanium dioxide may be added to the polymer prior to crosslinkage, or during vulcanization or during crosslinkage. The iron oxide-containing titanium dioxide should preferably be one, which is described in the specification of European Patent No. 0509533. The iron oxide-containing titanium dioxide obtained by thermal decomposition is generally added in an amount of 0.05 to 20 wt.% of the polymer.

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