Darrell C Hudson

US Patent:

6379687, Apr 30, 2002

Filed:

Jan 12, 2001

Appl. No.:

09/759797

Inventors:

James G. Shafer - Gladstone MO
Darrell C. Hudson - Liberty MO

Assignee:

Bayer Corporation - Pittsburgh PA

International Classification:

A01N 2500

US Classification:

424405, 5142292, 514342, 514365

Abstract:

The present invention provides a composition for inhibiting phase separation and the resulting non-uniform distribution of an active ingredient in low viscosity, water-based pesticide suspensions. In accordance with this invention, the composition comprises from about 0. 003% to about 50% by weight of a pesticide, from about 0. 5% to about 10% by weight of a wetting agent; from about 0. 0% to about 0. 8% by weight of a thickener; from about 0. 1% to about 0. 5% of an antimicrobial agent; from about 5% to about 20% of an anti-freeze; from about 1% to about 8% of a hydrophobic fumed silica; and from about 40% to about 95% of water. In an embodiment of the invention, the hydrophobic fumed silica results from a hydrophilic silica which is treated with dimethyldichlorosilane.

US Patent:

6488949, Dec 3, 2002

Filed:

Feb 8, 2002

Appl. No.:

10/071539

Inventors:

James G. Shafer - Gladstone MO
Darrell C. Hudson - Liberty MO

Assignee:

Bayer Corporation - Pittsburgh PA

International Classification:

A01N 2500

US Classification:

424405, 5142292, 514342, 514365

Abstract:

The present invention provides a composition for inhibiting phase separation and the resulting non-uniform distribution of an active ingredient in low viscosity, water-based pesticide suspensions. In accordance with this invention, the composition comprises from about 0. 003% to about 50% by weight of a pesticide, from about 0. 5% to about 10% by weight of a wetting agent; from about 0. 0% to about 0. 8% by weight of a thickener; from about 0. 1% to about 0. 5% of an antimicrobial agent; from about 5% to about 20% of an anti-freeze; from about 1% to about 8% of a hydrophobic fumed silica; and from about 40% to about 95% of water. In an embodiment of the invention, the hydrophobic fumed silica results from a hydrophilic silica which is treated with dimethyldichlorosilane.

US Patent:

60749873, Jun 13, 2000

Filed:

Jan 11, 1999

Appl. No.:

9/228904

Inventors:

James G. Shafer - Gladstone MO
Darrell C. Hudson - Liberty MO

Assignee:

Bayer Corporation - Pittsburgh PA

International Classification:

A01N 4372
A01N 4364
A01N 4336
A01N 2500

US Classification:

504132

Abstract:

The present invention provides a composition for inhibiting phase separation and the resulting non-uniform distribution of an active ingredient in low viscosity, water-based pesticide suspensions. In accordance with this invention, the composition comprises from about 0. 003% to about 50% by weight of a pesticide, from about 0. 5% to about 10% by weight of a wetting agent; from about 0. 0% to about 0. 8% by weight of a thickener; from about 0. 1% to about 0. 5% of an antimicrobial agent; from about 5% to about 20% of an anti-freeze; from about 1% to about 8% of a hydrophobic fumed silica; and from about 40% to about 95% of water. In an embodiment of the invention, the hydrophobic fumed silica results from a hydrophilic silica which is treated with dimethyldichlorosilane.