MY115160A - Precipitated silica - Google Patents

Precipitated silica

Info

Publication number
MY115160A
MY115160A MYPI94002989A MYPI9402989A MY115160A MY 115160 A MY115160 A MY 115160A MY PI94002989 A MYPI94002989 A MY PI94002989A MY PI9402989 A MYPI9402989 A MY PI9402989A MY 115160 A MY115160 A MY 115160A
Authority
MY
Malaysia
Prior art keywords
initial seed
sio2
expressed
alkaline metal
silicate
Prior art date
Application number
MYPI94002989A
Inventor
Yvonick Chevallier
Evelyne Prat
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
Publication of MY115160A publication Critical patent/MY115160A/en

Links

Classifications

    • 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
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • 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
    • C01P2004/60—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
    • C01P2006/11—Powder tap 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
    • C01P2006/14—Pore volume
    • 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
    • C01P2006/16—Pore diameter
    • C01P2006/17—Pore diameter distribution

Abstract

SILICAS IN THE FORM OF POWDER AND SUBSTANTIALLY SPHERICAL BEADS OR GRANULES ARE CHARACTERIZED BY A CTAB SPECIFIC SURFACE OF 140 AND 240 M2/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 A BEING LESS THAN 50OF THE POROUS VOLUME FORMED BY THE PORES WITH DIAMETERS OF 400 A OR LESS. THE 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 SEED IS FORMED COMPRISING A PORTION OF THE TOTAL QUANTITY OF ALKALINE METAL SILICATE M IN THE REACTION, THE SILICATE CONCENTRATION (EXPRESSED AS SIO2) IN SAID SEED BEING LESS THAN 20 G/L; (II) AN ACIDIFYING AGENT IS ADDED TO THE INITIAL SEED UNTIL AT LEAST 5OF THE QUANTITY OF M2O IN THE INITIAL SEED IS NEUTRALIZED; (III) THE ACIDIFYING AGENT AND THE REMAINING QUANTITY OF ALKALINE METAL SILICATE M ARE ADDED SIMULTANEOUSLY SO THAT THE RATIO OF THE QUANTITY OF ADDED SILICATE (EXPRESSED AS SIO2) TO THE QUANTITY OF SILICA IN THE INITIAL SEED (EXPRESSED AS SIO2) IS GREATER THAN 4 AND AT MOST 100.
MYPI94002989A 1994-08-12 1994-11-10 Precipitated silica MY115160A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9410046A FR2723581B1 (en) 1994-08-12 1994-08-12 NEW PROCESS FOR PREPARING PRECIPITATED SILICA

Publications (1)

Publication Number Publication Date
MY115160A true MY115160A (en) 2003-04-30

Family

ID=9466329

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI94002989A MY115160A (en) 1994-08-12 1994-11-10 Precipitated silica

Country Status (5)

Country Link
CO (1) CO4410418A1 (en)
FR (1) FR2723581B1 (en)
MY (1) MY115160A (en)
TW (1) TW307741B (en)
ZA (1) ZA948071B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2928363B1 (en) * 2008-03-10 2012-08-31 Rhodia Operations NOVEL PROCESS FOR THE PREPARATION OF PRECIPITED SILICES, PRECIPITED SILITIES WITH SPECIAL MORPHOLOGY, GRANULOMETRY AND POROSITY AND THEIR USES, IN PARTICULAR FOR THE STRENGTHENING OF POLYMERS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731326A (en) * 1951-08-31 1956-01-17 Du Pont Process of preparing dense amorphous silica aggregates and product
FR2649089B1 (en) * 1989-07-03 1991-12-13 Rhone Poulenc Chimie CONTROLLED POROSITY SILICA AND PROCESS FOR OBTAINING SAME
FR2678259B1 (en) * 1991-06-26 1993-11-05 Rhone Poulenc Chimie NOVEL PRECIPITATED SILICA IN THE FORM OF GRANULES OR POWDERS, METHODS OF SYNTHESIS AND USE FOR REINFORCING ELASTOMERS.

Also Published As

Publication number Publication date
CO4410418A1 (en) 1997-01-09
ZA948071B (en) 1995-06-06
FR2723581B1 (en) 1996-11-08
FR2723581A1 (en) 1996-02-16
TW307741B (en) 1997-06-11

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