MY162338A - Silica-based sols and their production and use - Google Patents
Silica-based sols and their production and useInfo
- Publication number
- MY162338A MY162338A MYPI20051521A MYPI20051521A MY162338A MY 162338 A MY162338 A MY 162338A MY PI20051521 A MYPI20051521 A MY PI20051521A MY PI20051521 A MYPI20051521 A MY PI20051521A MY 162338 A MY162338 A MY 162338A
- Authority
- MY
- Malaysia
- Prior art keywords
- aqueous
- silica
- ion exchange
- range
- aqueous phase
- Prior art date
Links
Landscapes
- Silicon Compounds (AREA)
- Paper (AREA)
Abstract
THE PRESENT INVENTION RELATES TO A PROCESS FOR PRODUCING AN AQUEOUS SILICA-BASED SOL WHICH COMPRISES: (A) PROVIDING A CATIONIC ION EXCHANGE RESIN HAVING AT LEAST PART OF ITS ION EXCHANGE CAPACITY IN HYDROGEN FORM; (B) BRINGING SAID ION EXCHANGE RESIN IN CONTACT WITH AN AQUEOUS ALKALI METAL SILICATE TO FORM AN AQUEOUS SLURRY; (C) STIRRING SAID AQUEOUS SLURRY UNTIL THE PH OF THE AQUEOUS PHASE IS IN THE RANGE OF FROM 5.0 TO 11.5; AND/OR ALTERNATIVELY. STIRRING SAID AQUEOUS SLURRY TO ALLOW PARTICLE AGGREGATION OR MICROGEL FORMATION CORRESPONDING TO AN S VALUE UP TO 45%, AND PH OF THE AQUEOUS PHASE OF AT LEAST 5.0; (D) ADJUSTING THE PH OF SAID AQUEOUS PHASE TO ABOVE 9.0 USING ONE OR MORE MATERIALS COMPRISING AT LEAST ONE ALUMINIUM COMPOUND; AND (E) SEPARATING SAID ION EXCHANGE RESIN FROM THE AQUEOUS PHASE AFTER STEP (C) OR AFTER STEP (D), AND, OPTIONALLY (F) PROVIDING AN AQUEOUS SILICA-BASED SOL HAVING AN S VALUE BETWEEN 10 AND 50%. THE INVENTION ALSO RELATES TO A SILICA-BASED SOL HAVING AN S VALUE WITHIN THE RANGE OF FROM 15 TO 25%, MOLE RATIO SI:AL IN THE RANGE OF FROM 20:1 TO 50:1, MOLE RATIO SI:X, WHERE X = ALKALI METAL, IN THE RANGE OF FROM 5:1 TO 17:1, SIO? CONTENT OF AT LEAST 5% BY WEIGHT AND CONTAINING SILICA-BASED PARTICLES HAVING A SPECIFIC SURFACE AREA OF AT LEAST 300 M?/G. THE INVENTION FURTHER RELATES TO PROCESS FOR PRODUCING PAPER WHICH COMPRISES (i) PROVIDING AN AQUEOUS SUSPENSION COMPRISING CELLULOSIC FIBRES; (j) ADDING TO THE SUSPENSION ONE OR MORE DRAINAGE AND RETENTION AIDS COMPRISING A SILICA-BASED SOL ACCORDING TO THE INVENTION; AND (K) DEWATERING THE OBTAINED SUSPENSION TO PROVIDE A SHEET OR WEB OF PAPER.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US55996504P | 2004-04-07 | 2004-04-07 | |
US55995804P | 2004-04-07 | 2004-04-07 | |
EP04445048 | 2004-04-16 | ||
EP04445049 | 2004-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
MY162338A true MY162338A (en) | 2017-06-15 |
Family
ID=58313573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI20051521A MY162338A (en) | 2004-04-07 | 2005-04-05 | Silica-based sols and their production and use |
Country Status (5)
Country | Link |
---|---|
DK (1) | DK1740501T3 (en) |
ES (2) | ES2611470T3 (en) |
MY (1) | MY162338A (en) |
PL (2) | PL1740501T3 (en) |
PT (2) | PT1740501T (en) |
-
2005
- 2005-04-05 PL PL05722308T patent/PL1740501T3/en unknown
- 2005-04-05 DK DK05722308.3T patent/DK1740501T3/en active
- 2005-04-05 PT PT57223083T patent/PT1740501T/en unknown
- 2005-04-05 MY MYPI20051521A patent/MY162338A/en unknown
- 2005-04-05 ES ES10151449.5T patent/ES2611470T3/en active Active
- 2005-04-05 PL PL10151449T patent/PL2196436T3/en unknown
- 2005-04-05 ES ES05722308.3T patent/ES2619180T3/en active Active
- 2005-04-05 PT PT101514495T patent/PT2196436T/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL1740501T3 (en) | 2017-06-30 |
ES2619180T3 (en) | 2017-06-23 |
PL2196436T3 (en) | 2017-05-31 |
ES2611470T3 (en) | 2017-05-09 |
PT1740501T (en) | 2017-03-17 |
DK1740501T3 (en) | 2017-03-20 |
PT2196436T (en) | 2017-02-14 |
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