WO1999035085A1 - Particules de silice precipitees a aptitude optimale a la dispersion, procede de production et applications - Google Patents

Particules de silice precipitees a aptitude optimale a la dispersion, procede de production et applications Download PDF

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Publication number
WO1999035085A1
WO1999035085A1 PCT/IL1998/000634 IL9800634W WO9935085A1 WO 1999035085 A1 WO1999035085 A1 WO 1999035085A1 IL 9800634 W IL9800634 W IL 9800634W WO 9935085 A1 WO9935085 A1 WO 9935085A1
Authority
WO
WIPO (PCT)
Prior art keywords
sihca
silica
ctab
value
particulate
Prior art date
Application number
PCT/IL1998/000634
Other languages
English (en)
Inventor
Alexander Josef
Original Assignee
Rotem Amfert Negev Ltd.
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 Rotem Amfert Negev Ltd. filed Critical Rotem Amfert Negev Ltd.
Priority to AU17801/99A priority Critical patent/AU1780199A/en
Publication of WO1999035085A1 publication Critical patent/WO1999035085A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT 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
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28—Compounds of silicon
    • C09C1/30—Silicic acid
    • C09C1/3009—Physical treatment, e.g. grinding; treatment with ultrasonic vibrations
    • C09C1/3036—Agglomeration, granulation, pelleting
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
    • C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/50—Agglomerated particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/16—Pore diameter
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/19—Oil-absorption capacity, e.g. DBP values
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content

Definitions

  • the present invention relates to a process for preparing optimal precipitated silica particulates from rocks such as porcelanite, diatomite and amorphic quartz, characteristically in the form of granules, powders or spherical beads, for use as a reinforcing filler material for elastomeric and rubber matrices, and to a novel precipitated silica.
  • optimal median pore diameter was 226A (viz., close to the arithmetic average
  • the filtered silica is dried according to the prior art in any suitable way.
  • Prior art processes employ rotating dryers, or spray dryers.
  • the process according to the invention can be carried out using conventional drying methods.
  • the wet silica obtained from Stage E typically in the form of a wet cake having a moisture content of about 75 to 87 weight %, is mixed with dry silica, to form a mixture having a moisture content not higher than 75 weight %, and is subjected to granulation. Subsequently, the granules obtained are dried in a fluidized bed.
  • the silica of example 9 satisfies the criterion according to the present invention, i.e.,

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Silicon Compounds (AREA)

Abstract

Ces particules de silice précipitées à aptitude optimale à la dispersion se caractérisent par le fait qu'elles ont une valeur Δ correspondant à la valeur de crête d'intrusion différentielle se trouvant sur le diamètre médian de pore, comme mesuré au moyen d'un porosimètre Hg, de sorte que Δ (ml/g.Å) x 103≥0,141 x CTAB (m2/g) - b, formule dans laquelle la valeur du diamètre médian de pore est comprise entre 100 et 400 Å, celle du CTAB est comprise entre 90 et 400 et celle de l'intercepte b égale ou inférieure à 10. L'invention a également trait à des procédés de production de cette silice ainsi qu'à ses applications.
PCT/IL1998/000634 1998-01-05 1998-12-31 Particules de silice precipitees a aptitude optimale a la dispersion, procede de production et applications WO1999035085A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU17801/99A AU1780199A (en) 1998-01-05 1998-12-31 Optimally dispersible precipitated silica particulates, process for their preparation and their use

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL12285198A IL122851A0 (en) 1998-01-05 1998-01-05 Optimally dispersible precipitated silica particulates process for their preparation and their use
IL122851 1998-01-05

Publications (1)

Publication Number Publication Date
WO1999035085A1 true WO1999035085A1 (fr) 1999-07-15

Family

ID=11071056

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/IL1998/000634 WO1999035085A1 (fr) 1998-01-05 1998-12-31 Particules de silice precipitees a aptitude optimale a la dispersion, procede de production et applications
PCT/IL1998/000635 WO1999035086A1 (fr) 1998-01-05 1998-12-31 Procede de preparation de silice granulaire

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/IL1998/000635 WO1999035086A1 (fr) 1998-01-05 1998-12-31 Procede de preparation de silice granulaire

Country Status (4)

Country Link
AU (2) AU1780199A (fr)
IL (1) IL122851A0 (fr)
TW (1) TW412504B (fr)
WO (2) WO1999035085A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2808266A1 (fr) * 2000-04-28 2001-11-02 Rhodia Chimie Sa Granules de silice de precipitation epaississante obtenus par granulation et leur utilisation comme agent epaississant dans les compositions dentaires
CN103466637A (zh) * 2013-08-29 2013-12-25 中国科学院过程工程研究所 一种利用碳酸氢钠控制过饱和度生产沉淀二氧化硅的方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB748294A (en) * 1952-07-18 1956-04-25 Degussa Process for the conversion of finely divided substances into granules
FR2111148A5 (fr) * 1970-10-09 1972-06-02 Akzo Nv
US3928540A (en) * 1971-07-26 1975-12-23 Ppg Industries Inc Process for preparing silica pigment
EP0520862A1 (fr) * 1991-06-26 1992-12-30 Rhone-Poulenc Chimie Procédé de préparation de silice précipitée, silices précipitées obtenues et leur utilisation au renforcement des élastomères
EP0549323A1 (fr) * 1991-12-25 1993-06-30 R & D SILICATE PRODUCTS LTD. Procédé de préparation de silice amorphe
EP0610136A1 (fr) * 1993-02-02 1994-08-10 Rotem Amfert Negev Ltd. Procédé de préparation de silice pure amorphe à partir de roches
EP0647591A1 (fr) * 1993-10-07 1995-04-12 Degussa Aktiengesellschaft Silices de précipitation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935914A1 (de) * 1979-09-06 1981-04-02 Kali-Chemie Ag, 3000 Hannover Verfahren zur herstellung von kugelfoermigen formkoerpern auf basis al(pfeil abwaerts)2(pfeil abwaerts)o(pfeil abwaerts)3(pfeil abwaerts) und/oder sio(pfeil abwaerts)2(pfeil abwaerts)
US5091132A (en) * 1989-08-07 1992-02-25 J. M. Huber Corporation Method and apparatus for production of rubber dispersible pellets
JP3316243B2 (ja) * 1993-01-18 2002-08-19 川鉄鉱業株式会社 粉末シリカの高分散性造粒物及びその製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB748294A (en) * 1952-07-18 1956-04-25 Degussa Process for the conversion of finely divided substances into granules
FR2111148A5 (fr) * 1970-10-09 1972-06-02 Akzo Nv
US3928540A (en) * 1971-07-26 1975-12-23 Ppg Industries Inc Process for preparing silica pigment
EP0520862A1 (fr) * 1991-06-26 1992-12-30 Rhone-Poulenc Chimie Procédé de préparation de silice précipitée, silices précipitées obtenues et leur utilisation au renforcement des élastomères
EP0549323A1 (fr) * 1991-12-25 1993-06-30 R & D SILICATE PRODUCTS LTD. Procédé de préparation de silice amorphe
EP0610136A1 (fr) * 1993-02-02 1994-08-10 Rotem Amfert Negev Ltd. Procédé de préparation de silice pure amorphe à partir de roches
EP0647591A1 (fr) * 1993-10-07 1995-04-12 Degussa Aktiengesellschaft Silices de précipitation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2808266A1 (fr) * 2000-04-28 2001-11-02 Rhodia Chimie Sa Granules de silice de precipitation epaississante obtenus par granulation et leur utilisation comme agent epaississant dans les compositions dentaires
CN103466637A (zh) * 2013-08-29 2013-12-25 中国科学院过程工程研究所 一种利用碳酸氢钠控制过饱和度生产沉淀二氧化硅的方法
CN103466637B (zh) * 2013-08-29 2015-06-03 中国科学院过程工程研究所 一种利用碳酸氢钠控制过饱和度生产沉淀二氧化硅的方法

Also Published As

Publication number Publication date
WO1999035086A1 (fr) 1999-07-15
TW412504B (en) 2000-11-21
AU1780199A (en) 1999-07-26
AU1780299A (en) 1999-07-26
IL122851A0 (en) 1998-08-16

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