Silica-based sols and their production and use

Details Silica-based sols and their production and use Silica-based sols and their production and use

2005-04-07

2009-12-08

Kugel, Timothy J. (Department: 1796)

Colloid systems and wetting agents; subcombinations thereof; pro

Continuous liquid or supercritical phase: colloid systems;...

Aqueous continuous liquid phase and discontinuous phase...

C516S079000, C516S080000, C516S928000

Reexamination Certificate

active

07629392

ABSTRACT:
A process for producing an aqueous silica-based soils disclosed wherein a cationic ion exchange resin having part of its ion exchange capacity in hydrogen form is contacted with an aqueous alkali metal silicate to form a slurry having a pH from 5.0 to 11.5 and/or having particle aggregation or microgel formation corresponding to a S value up to 45%; adjusting the pH using a material comprising an aluminum compound; and separating the resin from the slurry.Silica-based sols having an S value from 15 to 25%, mole ratio Si:Al from 20:1 to 50:1, mole ratio Si:X, where X=alkali metal, from 5:1 to 17:1, SiO2content of at least 5% by weight and containing silica-based particles having a specific surface area of at least 300 m2/g, as well as the use of such silica-based sols in producing paper are also disclosed.

REFERENCES:
patent: 2577485 (1951-12-01), Rule
patent: 2601352 (1952-06-01), Wolter
patent: 2630410 (1953-03-01), Clapsadle et al.
patent: 2727008 (1955-12-01), Iler
patent: 2750345 (1956-06-01), Alexander
patent: 2754270 (1956-07-01), Kimberlin et al.
patent: 2892797 (1959-06-01), Alexander et al.
patent: 2974108 (1961-03-01), Alexander
patent: 3083167 (1963-03-01), Shannon
patent: 3374180 (1968-03-01), Marotta
patent: 3533816 (1970-10-01), Oken
patent: 3655578 (1972-04-01), Yates
patent: 3857925 (1974-12-01), Sirianni et al.
patent: 3916058 (1975-10-01), Vossos
patent: 3956171 (1976-05-01), Moore, Jr. et al.
patent: 4272409 (1981-06-01), Bergna
patent: 4388150 (1983-06-01), Sunden et al.
patent: 4750974 (1988-06-01), Johnson
patent: 4927498 (1990-05-01), Rushmere
patent: 4954220 (1990-09-01), Rushmere
patent: 5100581 (1992-03-01), Watanabe et al.
patent: 5127994 (1992-07-01), Johansson
patent: 5176891 (1993-01-01), Rushmere
patent: 5230833 (1993-07-01), Romberger et al.
patent: 5240561 (1993-08-01), Kaliski
patent: 5279807 (1994-01-01), Moffett et al.
patent: 5368833 (1994-11-01), Johansson et al.
patent: 5447604 (1995-09-01), Johansson et al.
patent: 5470435 (1995-11-01), Rushmere et al.
patent: 5482693 (1996-01-01), Rushmere et al.
patent: 5503820 (1996-04-01), Moffett et al.
patent: 5543014 (1996-08-01), Rushmere et al.
patent: 5571494 (1996-11-01), Saastamoinen
patent: 5603805 (1997-02-01), Andersson et al.
patent: 5626721 (1997-05-01), Rushmere et al.
patent: 5707494 (1998-01-01), Rushmere et al.
patent: 5708069 (1998-01-01), Burns et al.
patent: 5846384 (1998-12-01), Schöld et al.
patent: 5964693 (1999-10-01), Brekau et al.
patent: 6083997 (2000-07-01), Begala et al.
patent: 6228217 (2001-05-01), Dickerson et al.
patent: 6372089 (2002-04-01), Keiser et al.
patent: 6372806 (2002-04-01), Keiser et al.
patent: 6379500 (2002-04-01), Greenwood et al.
patent: 2002/0139502 (2002-10-01), Hallstrom et al.
patent: 2003/0024671 (2003-02-01), Persson et al.
patent: 549541 (1977-03-01), None
patent: 1446106 (1988-12-01), None
patent: WO 86/00100 (1986-01-01), None
patent: WO 86/05826 (1986-10-01), None
patent: WO 89/08741 (1989-09-01), None
patent: WO 93/24409 (1993-12-01), None
patent: WO 94/05597 (1994-03-01), None
patent: WO 95/23021 (1995-08-01), None
patent: WO 98/56715 (1998-12-01), None
patent: WO 98/56716 (1998-12-01), None
patent: WO 00/66491 (2000-11-01), None
patent: WO 00/66492 (2000-11-01), None
R. K. Iler and R. L. Dalton, “Degree of Hydration of Particles of Colloidal Silica in Aqueous Solution,” Grasselli Chemicals Department and E. I. Du Pont de Nemours and Co. Inc., Jan. 16,1956, vol. 60, pp. 955-957.
George W. Sears Jr., “Determination of Specific Surface Area of Colloidal Silica by Titration with Sodium Hydroxide,” Grasselli Chemicals Department and E. I. Du Pont de Nemours & Co., Inc., Dec. 12, 1956, vol. 28, pp. 1981-1983.
European Search Report EP 04 44 5048 dated Aug. 26, 2004.
Derwent abstract No. 008026336 abstracting SU 1446106 A1.
English language translation of SU 1446106 A1 (6 pages).
Moffett, Robert H., “On-site production of a silica-based microparticulate retention and drainage aid,” Tappi Journal, vol. 77, No. 12, pp. 133-138.
International Search Report No. PCT/SE2005/000488 dated Sep. 21, 2005.
V. Rieman, et al., “Ion-exchange chromatography in analytical chemistry,” Moscow, Mir Publishing House, 1973, pp. 86-88.

Affiliated with

Also associated with

Rating

Silica-based sols and their production and use does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silica-based sols and their production and use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silica-based sols and their production and use will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4084617