SE9702207D0 - Polysilcate microgels and silica-based materials - Google Patents

Polysilcate microgels and silica-based materials

Info

Publication number
SE9702207D0
SE9702207D0 SE9702207A SE9702207A SE9702207D0 SE 9702207 D0 SE9702207 D0 SE 9702207D0 SE 9702207 A SE9702207 A SE 9702207A SE 9702207 A SE9702207 A SE 9702207A SE 9702207 D0 SE9702207 D0 SE 9702207D0
Authority
SE
Sweden
Prior art keywords
polysilicate
ion
microgels
aqueous silicate
salt
Prior art date
Application number
SE9702207A
Other languages
Swedish (sv)
Inventor
Michael Persson
Marek Tokarz
Rein Sikkar
Original Assignee
Akzo Nobel Nv
Eka Chemicals Ab
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 Akzo Nobel Nv, Eka Chemicals Ab filed Critical Akzo Nobel Nv
Priority to SE9702207A priority Critical patent/SE9702207D0/en
Publication of SE9702207D0 publication Critical patent/SE9702207D0/en
Priority to BR9811257-0A priority patent/BR9811257A/en
Priority to EP98928775A priority patent/EP0989956B1/en
Priority to AU80489/98A priority patent/AU736396B2/en
Priority to CA002292577A priority patent/CA2292577C/en
Priority to PCT/SE1998/001102 priority patent/WO1998056716A1/en
Priority to RU2000100335/12A priority patent/RU2189351C2/en
Priority to AT98928775T priority patent/ATE550298T1/en
Priority to JP50228699A priority patent/JP3487511B2/en
Priority to CNB988059975A priority patent/CN1321887C/en
Priority to KR10-1999-7011222A priority patent/KR100372358B1/en
Priority to PT98928775T priority patent/PT989956E/en
Priority to CA002481870A priority patent/CA2481870C/en
Priority to ES98928775T priority patent/ES2383951T3/en
Priority to IDW991556D priority patent/ID23976A/en
Priority to NO19996056A priority patent/NO329169B1/en
Priority to US10/186,450 priority patent/US6673208B2/en

Links

Abstract

The present invention relates to polysilicate microgels, their preparation and use in paper making and water purification, the polysilicate microgels being obtainable by a process which comprises bringing into contact (i) particles of a salt AB with an aqueous silicate or polysilicate solution, (ii) an ion A with an ion B in the presence of an aqueous silicate or polysilicate solution, whereby the salt AB is precipitating in the aqueous phase, or (iii) an ion A with an ion B in the presence of an aqueous silicate or polysilicate solution, whereby the ions A and B represent ions of a precipitable salt AB having a pK s value of at least 4, measured at 20 °C in water. The invention further relates to aqueous silicate or polysilicate solutions, their preparations and use as precursors for polysilicate microgels. The aqueous silicate or polysilicate solutions contain an ion A which is calcium or magnesium, wherein the molar ratio of SiO 2 :A is less than 2000:1 and higher than 1:1, or an ion B which is carbonate, sulfate or phosphate, wherein the molar ratio is SiO 2 :B is less than 2000:1 and higher than 1:1.
SE9702207A 1997-06-09 1997-06-09 Polysilcate microgels and silica-based materials SE9702207D0 (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
SE9702207A SE9702207D0 (en) 1997-06-09 1997-06-09 Polysilcate microgels and silica-based materials
IDW991556D ID23976A (en) 1997-06-09 1998-06-08 POLYYLICIC MICROGELS AND SILICA BASED MATERIALS
RU2000100335/12A RU2189351C2 (en) 1997-06-09 1998-06-08 Polysilicate microgels and silicon dioxide-based materials
JP50228699A JP3487511B2 (en) 1997-06-09 1998-06-08 Materials based on polysilicate microgels and silica
AU80489/98A AU736396B2 (en) 1997-06-09 1998-06-08 Polysilicate microgels and silica-based materials
CA002292577A CA2292577C (en) 1997-06-09 1998-06-08 Polysilicate microgels and silica-based materials
PCT/SE1998/001102 WO1998056716A1 (en) 1997-06-09 1998-06-08 Polysilicate microgels and silica-based materials
BR9811257-0A BR9811257A (en) 1997-06-09 1998-06-08 Polysilicate microgels and silica-based materials.
AT98928775T ATE550298T1 (en) 1997-06-09 1998-06-08 METHOD FOR PRODUCING POLYSILICATE MICROGELS
EP98928775A EP0989956B1 (en) 1997-06-09 1998-06-08 Process for the preparation of polysilicate microgels
CNB988059975A CN1321887C (en) 1997-06-09 1998-06-08 Polysilicate microgels and silica-based materials
KR10-1999-7011222A KR100372358B1 (en) 1997-06-09 1998-06-08 Polysilicate microgels and silica-based materials
PT98928775T PT989956E (en) 1997-06-09 1998-06-08 Process for the preparation of polysilicate microgels
CA002481870A CA2481870C (en) 1997-06-09 1998-06-08 Polysilicate microgels and silica-based materials
ES98928775T ES2383951T3 (en) 1997-06-09 1998-06-08 Process for the preparation of polysilicate microgels
NO19996056A NO329169B1 (en) 1997-06-09 1999-12-08 Process for preparing aqueous polysilicate microgels
US10/186,450 US6673208B2 (en) 1997-06-09 2002-07-01 Polysilicate microgels and silica-based materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9702207A SE9702207D0 (en) 1997-06-09 1997-06-09 Polysilcate microgels and silica-based materials

Publications (1)

Publication Number Publication Date
SE9702207D0 true SE9702207D0 (en) 1997-06-09

Family

ID=20407318

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9702207A SE9702207D0 (en) 1997-06-09 1997-06-09 Polysilcate microgels and silica-based materials

Country Status (1)

Country Link
SE (1) SE9702207D0 (en)

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