ATE97108T1 - Kieselsaeurekuegelchen, verfahren zu deren herstellung und deren anwendung zur verstaerkung von elastomeren. - Google Patents

Kieselsaeurekuegelchen, verfahren zu deren herstellung und deren anwendung zur verstaerkung von elastomeren.

Info

Publication number
ATE97108T1
ATE97108T1 AT90401114T AT90401114T ATE97108T1 AT E97108 T1 ATE97108 T1 AT E97108T1 AT 90401114 T AT90401114 T AT 90401114T AT 90401114 T AT90401114 T AT 90401114T AT E97108 T1 ATE97108 T1 AT E97108T1
Authority
AT
Austria
Prior art keywords
elastomers
reinforcement
production
application
silica spheres
Prior art date
Application number
AT90401114T
Other languages
English (en)
Inventor
Yvonick Chevallier
Original Assignee
Rhone Poulenc Chimie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhone Poulenc Chimie filed Critical Rhone Poulenc Chimie
Application granted granted Critical
Publication of ATE97108T1 publication Critical patent/ATE97108T1/de

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28Compounds of silicon
    • C09C1/30Silicic acid
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/113Silicon oxides; Hydrates thereof
    • C01B33/12Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/187Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
    • C01B33/193Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/30Particle morphology extending in three dimensions
    • C01P2004/32Spheres
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/61Micrometer sized, i.e. from 1-100 micrometer
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/10Solid density
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/12Surface area
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/14Pore volume
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/16Pore diameter
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/19Oil-absorption capacity, e.g. DBP values
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/90Other properties not specified above

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silicon Polymers (AREA)
  • Polymerisation Methods In General (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Materials For Medical Uses (AREA)
AT90401114T 1989-05-02 1990-04-25 Kieselsaeurekuegelchen, verfahren zu deren herstellung und deren anwendung zur verstaerkung von elastomeren. ATE97108T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8905812A FR2646673B1 (fr) 1989-05-02 1989-05-02 Silice sous forme de bille, procede de preparation et son utilisation au renforcement des elastomeres

Publications (1)

Publication Number Publication Date
ATE97108T1 true ATE97108T1 (de) 1993-11-15

Family

ID=9381348

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90401114T ATE97108T1 (de) 1989-05-02 1990-04-25 Kieselsaeurekuegelchen, verfahren zu deren herstellung und deren anwendung zur verstaerkung von elastomeren.

Country Status (23)

Country Link
US (2) US6107226A (de)
EP (1) EP0396450B1 (de)
JP (1) JPH0660011B2 (de)
KR (1) KR950015028B1 (de)
CN (1) CN1036658C (de)
AT (1) ATE97108T1 (de)
AU (1) AU632806B2 (de)
BR (1) BR9002018A (de)
CA (1) CA2015795C (de)
DE (1) DE69004482T2 (de)
DK (1) DK0396450T3 (de)
ES (1) ES2048452T3 (de)
FI (1) FI93823C (de)
FR (1) FR2646673B1 (de)
IE (1) IE63628B1 (de)
IL (1) IL94247A0 (de)
MA (1) MA21825A1 (de)
NO (1) NO901850L (de)
PH (1) PH26912A (de)
PT (1) PT93937B (de)
TN (1) TNSN90056A1 (de)
TR (1) TR24228A (de)
ZA (1) ZA903324B (de)

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646673B1 (fr) * 1989-05-02 1991-09-06 Rhone Poulenc Chimie Silice sous forme de bille, procede de preparation et son utilisation au renforcement des elastomeres
NZ239293A (en) * 1990-08-10 1993-03-26 Commw Scient Ind Res Org Films comprising porous filler having a particle size greater than the film thickness in an amount to reduce the ratio of co 2 /o 2 permeability; packaging of fruits and vegetables
US5807630A (en) * 1990-08-10 1998-09-15 Commonwealth Scientific And Industrial Research Organisation Controlled permeability film
FR2678259B1 (fr) * 1991-06-26 1993-11-05 Rhone Poulenc Chimie Nouvelles silices precipitees sous forme de granules ou de poudres, procedes de synthese et utilisation au renforcement des elastomeres.
TR28393A (tr) * 1992-07-16 1996-05-29 Rhone Poulenc Chimie Silis cökeltisi hazirlamada yeni yöntem, yeni silis cökeltileri ve bunlarin elastomerlerin güclendirilmesinde kullanimi.
EP0588497A1 (de) * 1992-08-19 1994-03-23 JOSEPH CROSFIELD & SONS LTD. Verfahren zur Herstellung von Fällungskieselsäure
EP0722474B1 (de) * 1993-09-17 2003-09-17 The Dow Chemical Company Filmherstellungsverfahren
WO1995009127A1 (fr) 1993-09-29 1995-04-06 Rhone-Poulenc Chimie Silice precipitee
US6001322A (en) * 1993-09-29 1999-12-14 Rhone-Poulenc Chimie Precipitated silicas
FR2710630B1 (fr) * 1993-09-29 1995-12-29 Rhone Poulenc Chimie Nouvelles silices précipitées, leur procédé de préparation et leur utilisation au renforcement des élastomères.
US6169135B1 (en) 1993-09-29 2001-01-02 Rhone Poulenc Chimie Precipitated silica
DE4427137B4 (de) * 1993-10-07 2007-08-23 Degussa Gmbh Fällungskieselsäure
US6977065B1 (en) 1993-10-07 2005-12-20 Degussa Ag Precipitated silicas
FR2729671B1 (fr) * 1995-01-20 1997-04-18 Michelin & Cie Enveloppe de pneumatique a base de silice precipitee presentant une resistance au roulement amelioree
FR2747669B1 (fr) * 1996-04-22 1998-05-22 Rhone Poulenc Chimie Procede de preparation de particules creuses de silice
FR2750692B1 (fr) * 1996-07-05 1998-10-16 Rhone Poulenc Chimie Nouvelle silice abrasive, utilisable dans les dentifrices, son procede de preparation et compositions dentifrices la contenant
FR2763581B1 (fr) * 1997-05-26 1999-07-23 Rhodia Chimie Sa Silice precipitee utilisable comme charge renforcante pour elastomeres
FR2767071B1 (fr) * 1997-08-06 1999-09-10 Rhodia Chimie Sa Composition comprenant un liquide absorbe sur un support a base de silice precipitee
US20010051176A1 (en) * 1997-08-06 2001-12-13 Jean-Francois Viot Composition comprising a liquid absorbed on a support based on precipitated silica
DE19740440A1 (de) * 1997-09-15 1999-03-18 Degussa Leicht dispergierbare Fällungskieselsäure
DE19807700A1 (de) * 1998-02-24 1999-08-26 Degussa Fällungskieselsäuregranulate
FR2776537B1 (fr) * 1998-03-30 2000-05-05 Rhodia Chimie Sa Composition comprenant un liquide absorbe sur un support a base de silice precipitee
DE10112441A1 (de) * 2001-03-15 2002-09-19 Degussa Kieselsäure durch Fällung mit konstanter Alkalizahl und deren Verwendung
CN1325549C (zh) 2001-06-28 2007-07-11 米其林技术公司 采用具有非常低比表面积的二氧化硅增强的轮胎胎面
US7253224B2 (en) * 2001-08-07 2007-08-07 Ppg Industries Ohio, Inc. Silica-based particulates
FR2833937B1 (fr) * 2001-12-26 2004-11-12 Rhodia Chimie Sa Silices a faible reprise en eau
WO2003067684A2 (en) * 2002-02-07 2003-08-14 Kvg Technologies, Inc. Lead acid battery with gelled electrolyte formed by filtration action of absorbent separators, electrolyte therefor, and absorbent separators therefor
DE10304131A1 (de) 2003-02-03 2004-08-05 Clariant Gmbh Verwendung von Übergangsmetallkomplexen als Bleichkatalysatoren
NO20040167L (no) * 2004-01-14 2005-07-15 Cod Technologies As Prosess for fremstilling av utfelt silika fra olivin
FR2876028B1 (fr) * 2004-10-05 2009-10-16 Axiss France Sas Encapsulation d'extraits vegetaux
FR2880351B1 (fr) 2004-12-30 2007-04-13 Rhodia Chimie Sa Utilisation de silices specifiques pour augmenter la rigidite d'un thermoplastique en maintenant ou ameliorant sa resistance au choc
FR2880352B1 (fr) * 2004-12-30 2007-11-16 Rhodia Chimie Sa Utilisation d'une silice de precipitation pour augmenter la resistance au choc d'un materiau polymere thermoplastique
DE102008035867A1 (de) * 2008-08-01 2010-02-04 Evonik Degussa Gmbh Neuartige Fällungskieselsäuren für Trägeranwendungen
US9533479B2 (en) 2008-09-18 2017-01-03 Medline Industries, Inc. Absorbent articles having antimicrobial properties and methods of manufacturing the same
US9717818B2 (en) 2009-05-08 2017-08-01 Medline Industries, Inc. Absorbent articles having antimicrobial properties and methods of manufacturing the same
HUE031263T2 (en) * 2009-07-03 2017-07-28 Evonik Degussa Gmbh Hydrophilic silica as filler for silicone rubber compositions
FR2962996B1 (fr) * 2010-07-23 2012-07-27 Rhodia Operations Nouveau procede de preparation de silices precipitees
FR2984870B1 (fr) * 2011-12-23 2014-03-21 Rhodia Operations Nouveau procede de preparation de silices precipitees.
FR2985991B1 (fr) * 2012-01-25 2014-11-28 Rhodia Operations Nouveau procede de preparation de silices precipitees
FR2985990B1 (fr) * 2012-01-25 2014-11-28 Rhodia Operations Nouveau procede de preparation de silices precipitees a morphologie, granulometrie et porosite particulieres
US9758656B2 (en) 2013-08-28 2017-09-12 Sabic Global Technologies B.V. Soft touch compositions and articles thereof
CN103663463A (zh) * 2013-11-04 2014-03-26 中国科学院深圳先进技术研究院 微米尺寸的二氧化硅微球的制备方法
ES2718691T3 (es) * 2014-02-28 2019-07-03 Rhodia Operations Proceso para la preparación de sílices precipitadas, sílices precipitadas y sus usos, en particular para el refuerzo de polímeros
ES2807272T3 (es) 2015-07-28 2021-02-22 Rhodia Operations Procedimiento para la recuperación de sulfato de sodio
EP3507850B8 (de) 2016-08-30 2020-08-05 Rhodia Operations Fest-flüssiger elektrolyt zur anwendung in einer batterie
US10486973B2 (en) * 2016-11-18 2019-11-26 Ppg Industries Ohio, Inc. Silica-based spherical particulates and methods of preparing the same
WO2019025410A1 (en) 2017-08-04 2019-02-07 Rhodia Operations ELASTOMERIC COMPOSITION COMPRISING PRECIPITATED SILICA AND AROMATIC POLYMER CONTAINING SULFUR
KR102690236B1 (ko) 2017-12-27 2024-08-01 로디아 오퍼레이션스 실리카 현탁액
KR102720864B1 (ko) 2018-02-01 2024-10-24 로디아 오퍼레이션스 유기 용매 중 실리카 현탁액 및 이의 제조 방법
CN111566844A (zh) 2018-02-02 2020-08-21 罗地亚经营管理公司 复合电解质
WO2019170694A1 (en) 2018-03-08 2019-09-12 Solvay Sa A process for the preparation of a solid polymer electrolyte useful in batteries
EP3691015A1 (de) 2019-02-01 2020-08-05 Rhodia Operations Elektrolyt
CN110211793A (zh) * 2019-04-28 2019-09-06 深圳市吉胜华力科技有限公司 一种稀土永磁材料制备方法
WO2021009550A1 (en) 2019-07-18 2021-01-21 Rhodia Brasil Ltda Preparation of immobilized enzymes
EP4045334A1 (de) 2019-10-15 2022-08-24 Rhodia Operations Verfahren zur herstellung von modifiziertem silica, modifiziertes silica und dessen verwendungen
EP3636702A1 (de) 2019-12-06 2020-04-15 Solvay Specialty Polymers Italy S.p.A. Wasserabweisende beschichtung
EP4125781A1 (de) 2020-03-24 2023-02-08 Rhodia Operations Bleichende mundpflegezusammensetzungen
WO2022180133A1 (en) 2021-02-26 2022-09-01 Solvay Specialty Polymers Italy S.P.A. Method for sanitizing or sterilizing the surface of an article having a fluoropolymer coating
EP4313861A1 (de) 2021-04-02 2024-02-07 Rhodia Operations Neue kieselsäure, verfahren zu ihrer herstellung und ihre verwendungen
US20240158615A1 (en) 2022-11-02 2024-05-16 The Goodyear Tire & Rubber Company Precipitated silica pretreated with a coupling agent and polyethylene glycol for a rubber composition
EP4619472A1 (de) 2022-11-14 2025-09-24 Rhodia Operations Modifizierte fällungskieselsäure, deren herstellung und verwendung
US20240326361A1 (en) 2023-03-29 2024-10-03 The Goodyear Tire & Rubber Company Sealant composition for self-sealing pneumatic tire

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383172A (en) * 1964-02-04 1968-05-14 Degussa Process for producing silica in the form of hollow spheres
US3669624A (en) * 1970-07-09 1972-06-13 Grace W R & Co Process for producing high average pore volume silica
US3923533A (en) * 1972-03-02 1975-12-02 Ppg Industries Inc Thermally stable and crush resistant microporous glass catalyst supports
FR2453880A1 (fr) * 1979-04-13 1980-11-07 Rhone Poulenc Ind Nouveau pigment a base de silice sous forme de bille, procede pour l'obtenir et application, notamment comme charge renforcante dans les elastomeres
US4508607A (en) * 1982-10-18 1985-04-02 W. R. Grace & Co. Particulate dialytic silica
JPS60105609A (ja) * 1983-03-04 1985-06-11 Taki Chem Co Ltd 歯磨用シリカ基剤及びその製造方法
FR2584698B1 (fr) * 1985-07-15 1990-05-18 Rhone Poulenc Spec Chim Procede de preparation de particules de silice spheroidales
GB8529970D0 (en) * 1985-12-05 1986-01-15 Unilever Plc Spheroidal silica
FR2646673B1 (fr) * 1989-05-02 1991-09-06 Rhone Poulenc Chimie Silice sous forme de bille, procede de preparation et son utilisation au renforcement des elastomeres
JP6217968B2 (ja) 2013-07-19 2017-10-25 ソニー株式会社 画像処理装置および方法、並びにプログラム

Also Published As

Publication number Publication date
PT93937A (pt) 1991-01-08
FR2646673B1 (fr) 1991-09-06
AU5458390A (en) 1990-11-08
US6290924B1 (en) 2001-09-18
FR2646673A1 (fr) 1990-11-09
IE901589L (en) 1990-11-02
DE69004482T2 (de) 1994-05-11
EP0396450A1 (de) 1990-11-07
KR950015028B1 (ko) 1995-12-21
FI93823C (fi) 1995-06-12
KR900018237A (ko) 1990-12-20
BR9002018A (pt) 1991-08-13
TNSN90056A1 (fr) 1991-03-05
NO901850L (no) 1990-11-05
AU632806B2 (en) 1993-01-14
ES2048452T3 (es) 1994-03-16
FI93823B (fi) 1995-02-28
NO901850D0 (no) 1990-04-26
TR24228A (tr) 1991-07-01
EP0396450B1 (de) 1993-11-10
CA2015795C (fr) 1999-11-30
JPH02302312A (ja) 1990-12-14
ZA903324B (en) 1991-02-27
JPH0660011B2 (ja) 1994-08-10
PT93937B (pt) 1996-10-31
US6107226A (en) 2000-08-22
IE63628B1 (en) 1995-05-17
IL94247A0 (en) 1991-03-10
CA2015795A1 (fr) 1990-11-02
FI902170A0 (fi) 1990-04-30
CN1036658C (zh) 1997-12-10
DK0396450T3 (da) 1993-12-20
PH26912A (en) 1992-12-03
CN1046917A (zh) 1990-11-14
DE69004482D1 (de) 1993-12-16
MA21825A1 (fr) 1990-12-31

Similar Documents

Publication Publication Date Title
ATE97108T1 (de) Kieselsaeurekuegelchen, verfahren zu deren herstellung und deren anwendung zur verstaerkung von elastomeren.
DE3852299D1 (de) Verfahren zur herstellung magnetisch empfindlicher polymerteilchen und deren anwendung.
DE3863463D1 (de) Wasserabweisende faellungskieselsaeure, verfahren zu ihrer herstellung und deren anwendung zur verstaerkung von silikon-elastomeren.
DE68911346D1 (de) Länglich geformte Teilchen enthaltendes Kieselsäuresol sowie Verfahren zur Herstellung desselben.
DE69527704D1 (de) Poröses absorbierendes material mit modifierter oberflächen-charakteristik und verfahren zu seiner herstellung
DE69009110D1 (de) Kieselsäure mit kontrollierter Porosität und Verfahren zu deren Herstellung.
ATE79848T1 (de) Verfahren zur herstellung eines bau- und/oder konstruktionsmaterials; polymermodifizierte, waessrige dispersion; und verwendung derselben zur herstellung eines bau- und/oder konstruktionsmaterials.
DE3583558D1 (de) Verwendung von poroesen fuellstoffen in polymerisierbaren dentalmassen, solche massen und deren verwendung zur herstellung von formkoerpern.
DE3782217D1 (de) Wasserdichter gegenstand und verfahren zu seiner herstellung.
AT383606B (de) Verfahren zur herstellung von neuen transparenten copolyamiden mischungen daraus, und deren verwendung zur herstellung von formkoerpern
DE3587909D1 (de) Verfahren zur Herstellung von geschäumten Polypropylenharzpartikeln.
DE68916311D1 (de) Verfahren zur Herstellung einer thermoplastischen Kunststoffolie und deren Verwendung als Puffermaterial.
DE69311680D1 (de) Glasartiger Werkstoff mit ultrafeinen dispergierten Teilchen und Verfahren zu seiner Herstellung
DE3784611D1 (de) Aureobasidium sp. mikroorganismen und deren verwendung beim verfahren zur herstellung von erythritol.
DE69014379D1 (de) Verfahren zur Herstellung von anorganischen Oxydteilchen.
ATE14562T1 (de) Pyrogen hergestellte kieselsaeure und verfahren zu ihrer herstellung.
DE69430277D1 (de) Verfahren zur Herstellung von konventionellen Polyetherpolyolen und Polyetherpolyolen mit einem niedrigen Ungesättigtheitsgrad
DE69317609D1 (de) Verfahren zur Herstellung von Polymerpartikeln von unregelmässiger Form
DE68924579D1 (de) Verfahren zur Herstellung von Polymer-Partikeln und Toner-Partikeln.
DE69517868D1 (de) Suspensionspolymerisationsverfahren zur Herstellung von aufschäumbaren Styrolharzpartikel
DE69302731D1 (de) Verfahren zur Herstellung eines chemisch gebundenen Keramikerzeugnisses, dafür gebrauchtes Werkzeug und austauschbares Teil an diesem Werkzeug
DE3671236D1 (de) Verfahren zur herstellung von hydroxytelechelen polymeren und deren verwendung als bestandteil von polyurethanelastomeren.
DE69316702D1 (de) Verfahren zur Herstellung von Polymerpartikeln mit Unregelmässiger Form
DE68910780D1 (de) Verfahren zur Herstellung von Alumina mit grosser spezifischer Oberfläche.
DE69003106D1 (de) Silberhalogenid-hohlpartikel und verfahren zur herstellung derselben.

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee