Aqueous dispersions of partially hydrophobic silicas

Details Aqueous dispersions of partially hydrophobic silicas Aqueous dispersions of partially hydrophobic silicas

2011-05-31

2011-05-31

Choi, Ling-Siu (Department: 1763)

Colloid systems and wetting agents; subcombinations thereof; pro

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

Aqueous continuous liquid phase and discontinuous phase...

C423S335000

Reexamination Certificate

active

07951848

ABSTRACT:
Aqueous dispersions of partly hydrophobic silica exhibit a smooth change in viscosity with pH over a wide pH range, without gelling or exhibiting local maxima. The dispersions have numerous uses, including use in O/W Pickering emulsions.

REFERENCES:
patent: 2515949 (1950-07-01), Di Maio
patent: 2892797 (1959-06-01), Alexander et al.
patent: 3830738 (1974-08-01), Cottrell
patent: 3963627 (1976-06-01), Cottrell
patent: 4273589 (1981-06-01), Nauroth et al.
patent: 4308074 (1981-12-01), Nauroth et al.
patent: 4995995 (1991-02-01), Garvey et al.
patent: 5686054 (1997-11-01), Barthel et al.
patent: 6191122 (2001-02-01), Lux et al.
patent: 2003/0130379 (2003-07-01), Panz et al.
patent: 2004/0131527 (2004-07-01), Gottschalk-Gaudig et al.
patent: 1117734 (1982-02-01), None
patent: 2201186 (2000-10-01), None
patent: 1053641 (2000-06-01), None
patent: 1513857 (2004-07-01), None
patent: 2107082 (1971-08-01), None
patent: 2628975 (1989-07-01), None
patent: 2729244 (1990-06-01), None
patent: 40 06 392 (1990-09-01), None
patent: 4419234 (1995-12-01), None
patent: 0 736 489 (1996-10-01), None
patent: 0 798 348 (1997-10-01), None
patent: 0798348 (1997-10-01), None
patent: 1 124 693 (2001-08-01), None
patent: 1 281 734 (2003-02-01), None
patent: 1 433 749 (2004-06-01), None
patent: WO 00/20221 (2000-04-01), None
patent: WO 2005/092989 (2005-06-01), None
Heath, et al., “Influence of pH, Electrolyte, and Poly(Vinyl Alcohol) Addition on the Rheological Behavior of Aqueous Silica (Aerosil) Disp.,” J. Collid Interface Sci., 1983, Vol. 93, pp. 320-329.
Nguyen et al., “Direct Yield Stress Measurement with the Vane Method,”J. Rheol., 1985, Vol. 28, pp. 335 347.
Sears, G.W., Jr., “Determination of Specific Surface Area of Colloidal Silica by Titration with Sodium Hydroxide,” Analytical Chemistry, 1956, Vol. 28, No. 12, pp. 1981-1983.
Influence of the Partial Hydrophobization of Fumed Silica by Hexamethyldisilazane on Interactions with Water, Gun'Ko et al., Langmuir, vol. 19, pp. 10816-10828 (published on Dec. 23, 2003).

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