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Abstract: A continuous process for preparing polysilicate microgels comprising: (a) contacting a feed stream comprising a silica source, wherein the silica source is selected from the group consisting of an aqueous solution of a water soluble silicate and a colloidal silica sol, with a feed stream comprising carbon dioxide in a contacting vessel to produce a mixture; and (b) aging the mixture in an aging vessel to partially gel the mixture to produce an aged mixture, wherein the contacting step, the aging step, or both, is performed at a pressure of at least 172 kPa.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
30 May 2002
Publication Number
Publication Type
INA
Invention Field
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2005-09-20
Renewal Date
Applicants
INTERLATES LIMITED
CLECKHEATON ROAD,
LOW MOOR, BRADFORD,
BD12 0JZ,
ENGLAND
EKA CHEMICALS (AC) LIMITED
304 WORLE PARKWAY,
WESTON-SUPER-MARE,
AVON, BS22 OWA
UNITED KINGDOM
Inventors
1. ROBERT HARVEY MOFFETT
6 CROSSAN COURT,
LANDENBERG,
PA 19350
UNITED STATES OF AMERICA
2. WALTER JOHN SIMMONS
451 SCRABBLE ROAD,
MARTINSBURG,
WV 25401,
UNITED STATES OF AMERICA.
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | in-pct-2002-00707-mum-power of authority(11-11-2004).pdf | 2004-11-11 |
| 2 | in-pct-2002-00707-mum-petition under rule 138(11-11-2004).pdf | 2004-11-11 |
| 3 | in-pct-2002-00707-mum-petition under rule 137(11-11-2004).pdf | 2004-11-11 |
| 4 | in-pct-2002-00707-mum-form 5(11-11-2004).pdf | 2004-11-11 |
| 5 | in-pct-2002-00707-mum-form 3(11-11-2004).pdf | 2004-11-11 |
| 6 | in-pct-2002-00707-mum-form 1a(11-11-2004).pdf | 2004-11-11 |
| 7 | in-pct-2002-00707-mum-form 13(23-11-2004).pdf | 2004-11-23 |
| 8 | IN-PCT-2002-00707-MUM-CORRESPONDENCE(RENEWAL PAYMENT LETTER)-(28-11-2008).pdf | 2008-11-28 |
| 9 | IN-PCT-2002-00707-MUM-CORRESPONDENCE(RENEWAL PAYMENT LETTER)-(28-10-2009).pdf | 2009-10-28 |
| 10 | Form 27 [08-01-2016(online)].pdf | 2016-01-08 |
| 11 | Form 27 [03-01-2017(online)].pdf | 2017-01-03 |
| 12 | Form 27 [27-03-2017(online)].pdf | 2017-03-27 |
| 13 | IN-PCT-2002-00707-MUM-RELEVANT DOCUMENTS [04-01-2018(online)].pdf | 2018-01-04 |
| 14 | in-pct-2002-00707-mum-power of authority(5-7-2002).pdf | 2018-08-08 |
| 15 | in-pct-2002-00707-mum-power of authority(4-7-2002).pdf | 2018-08-08 |
| 16 | in-pct-2002-00707-mum-form-pct-isa-210(30-5-2002).pdf | 2018-08-08 |
| 17 | in-pct-2002-00707-mum-form-pct-ipea-409(30-5-2002).pdf | 2018-08-08 |
| 18 | in-pct-2002-00707-mum-form 3(30-5-2002).pdf | 2018-08-08 |
| 19 | in-pct-2002-00707-mum-form 2(granted)-(25-1-2005).pdf | 2018-08-08 |
| 21 | in-pct-2002-00707-mum-form 1a(30-5-2002).pdf | 2018-08-08 |
| 22 | in-pct-2002-00707-mum-form 19(16-3-2004).pdf | 2018-08-08 |
| 23 | in-pct-2002-00707-mum-form 13(25-1-2005).pdf | 2018-08-08 |
| 24 | IN-PCT-2002-00707-MUM-CORRESPONDENCE(RENEWAL PAYMENT LETTER)-(2-11-2012).pdf | 2018-08-08 |
| 25 | in-pct-2002-00707-mum-correspondence(ipo)-(20-9-2005).pdf | 2018-08-08 |
| 26 | in-pct-2002-00707-mum-correspondence(25-1-2005).pdf | 2018-08-08 |
| 27 | in-pct-2002-00707-mum-claims(granted)-(25-1-2005).pdf | 2018-08-08 |
| 29 | in-pct-2002-00707-mum-cancelled pages(25-1-2005).pdf | 2018-08-08 |
| 30 | IN-PCT-2002-00707-MUM-RELEVANT DOCUMENTS [03-01-2019(online)].pdf | 2019-01-03 |