CO5070714A1 - Proceso para la preparacion de silice coloidal estable - Google Patents

Proceso para la preparacion de silice coloidal estable

Info

Publication number
CO5070714A1
CO5070714A1 CO99037249A CO99037249A CO5070714A1 CO 5070714 A1 CO5070714 A1 CO 5070714A1 CO 99037249 A CO99037249 A CO 99037249A CO 99037249 A CO99037249 A CO 99037249A CO 5070714 A1 CO5070714 A1 CO 5070714A1
Authority
CO
Colombia
Prior art keywords
reaction vessel
colloidal silica
content
stable
alkali metal
Prior art date
Application number
CO99037249A
Other languages
English (en)
Inventor
Bruce A Keiser
B Nunn Maureen
Huang Cheng-Sung
Dennis L Macdonald
Original Assignee
Nalco Chemical Co
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 Nalco Chemical Co filed Critical Nalco Chemical Co
Publication of CO5070714A1 publication Critical patent/CO5070714A1/es

Links

Classifications

    • 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
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/141—Preparation of hydrosols or aqueous dispersions
    • C01B33/142—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
    • C01B33/143—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates of aqueous solutions of silicates
    • C01B33/1435—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates of aqueous solutions of silicates using ion exchangers
    • 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
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/141—Preparation of hydrosols or aqueous dispersions
    • C01B33/142—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
    • C01B33/143—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates of aqueous solutions of silicates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D21H17/29—Starch cationic
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Silicon Compounds (AREA)

Abstract

Una sílice coloidal estable, caracterizada porque tiene un área superficial mayor de 700 m2/g y un valor de S de 20-50.La sílice coloidal de la reivindicación 1, caracterizada porque el área superficial es mayor de 800 m2 /g.La sílice coloidal de la reivindicación 1, caracterizado porque tiene un contenido de sólidos en por ciento en peso en base al SiO2 en el rango de 10 a 20 por ciento.Un proceso para la preparación de la sílice coloidal estable de la reivindicación 1, caracterizado porque comprende: (a) cargar un recipiente de reacción con una resina de intercambio iónico catiónica que tiene por lo menos 40 por ciento de su capacidad de intercambio iónico en la forma de hidrógeno en donde el recipiente de reacción tiene medios para separar la sílice coloidal de la resina de intercambio iónico;(b) cargar el recipiente de reacción con un silicato de metal alcalino acuoso que tiene una proporción molar de SiO2 a óxido de metal alcalino, en el rango de 15:1 a 1:1 y un pH de por lo menos10.0;(c) agitar el contenido del recipiente de reacción hasta que el pH del contenido ésta en el rango de 8.5 a 11.0;(d) ajustar el pH del contenido del recipiente de reacción a más del 10.0 al utilizar una cantidad adicional del silicato de metal alcalino; y ...
CO99037249A 1998-03-06 1999-06-15 Proceso para la preparacion de silice coloidal estable CO5070714A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3610498A 1998-03-06 1998-03-06

Publications (1)

Publication Number Publication Date
CO5070714A1 true CO5070714A1 (es) 2001-08-28

Family

ID=21886642

Family Applications (1)

Application Number Title Priority Date Filing Date
CO99037249A CO5070714A1 (es) 1998-03-06 1999-06-15 Proceso para la preparacion de silice coloidal estable

Country Status (4)

Country Link
US (4) US6372089B1 (es)
CL (1) CL2008003896A1 (es)
CO (1) CO5070714A1 (es)
TW (2) TWI248417B (es)

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Also Published As

Publication number Publication date
CL2008003896A1 (es) 2009-06-12
US6372089B1 (en) 2002-04-16
TW200413251A (en) 2004-08-01
US6372806B1 (en) 2002-04-16
US20030065041A1 (en) 2003-04-03
US6486216B1 (en) 2002-11-26
TWI224080B (en) 2004-11-21
TWI248417B (en) 2006-02-01

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