ROBERT JAMES KOSTELNIK
Pilots at Ashbrook Dr, Ellicott, MD

6713543, Mar 30, 2004

Nov 26, 2001

09/994979

Modasser El-Shoubary - Crofton MD
Robert J. Kostelnik - Ellicott City MD

Millennium Inorganic Chemicals, Inc. - Hunt Valley MD

C08K 904

524127, 524431, 523205, 106436, 427218, 427220, 427384, 428357, 428363

A unique treatment for pigments is provided. This treatment, which uses certain organo-phosphoric acids and/or their salts, imparts improved physical and chemical qualities including lacing resistance, improved dispersion and decreased chemical reactivity when these treated pigments are incorporated into polymeric matrices.

6558464, May 6, 2003

Feb 7, 2001

09/779297

Robert J. Kostelnik - Ellicott City MD

Millennium Inorganic Chemicals, Inc. - Hunt Valley MD

C04B 1430

106447, 106448, 106449

The present invention discloses high solids slurries of anatase titanium dioxide pigment comprising greater than about 75% by weight of anatase TiO pigment dispersed in water. A process for producing the slurries of the present invention is disclosed which comprises the steps of a) dry milling the anatase titanium dioxide pigment, preferably by pressure rolling, and b) mixing the dry milled pigment with water in the presence of an acrylic acid dispersant.

6646037, Nov 11, 2003

Jul 31, 2002

10/209128

Modasser El-Shoubary - Crofton MD
Robert Kostelnik - Ellicott City MD
Charles Wheddon - Tetney near Grimsby, GB

Millennium Inorganic Chemicals, Inc. - Hunt Valley MD

C08K 310

524413, 524430, 524447, 524449, 524451, 524492, 523200, 25240062, 252401, 252402, 252403, 106417, 106493, 106500

A treatment for pigments is provided. This treatment, which uses certain organosulfonic compounds, imparts improved physical and chemical qualities including lacing resistance, improved dispersion and decreased chemical reactivity when these treated pigments are incorporated into polymeric matrices. The addition of organosulfonic compounds may flexibly be incorporated into known processes at varying points, and are preferably added downstream of any filtering steps.

5746819, May 5, 1998

Nov 14, 1995

8/557953

Robert J. Kostelnik - Ellicott City MD

SCM Chemicals, Inc. - Hunt Valley MD

C04B 1430, C09C 136

106447

The present invention discloses high solids slurries of sulfate process, anatase titanium dioxide pigment. The improvements of these slurries over those of the prior art are improved slurry stability, tolerance to calcium and magnesium ions, foaming tendencies and reduced tendency to flocculate. The slurries of the present invention are comprised of at least 65% by weight of anatase TiO. sub. 2 pigment produced by the sulfate production process dispersed in water containing a sufficient quantity of a dispersing agent selected from the group consisting of acrylic acid homopolymers and copolymers that are predominantly acrylic acid and contain at least one comonomer selected from the group consisting of maleic acid, methacrylic acid, itaconic acid, crotonic acid, fumaric acid, acrylamide, acrylonitrile, ethylene, propylene, styrene and esters of the above acids, which have been partially or completely neutralized with a neutralizing agent having a monovalent group and at least one neutralizing agent having a polyvalent group. A process for producing the slurries of the present invention is disclosed and comprises the steps of a) introducing the dispersing agent into water, b) adjusting the pH to a value greater than 7, c) adding the TiO. sub. 2, with adequate mixing to break up large agglomerates, and, optionally, d)grinding in the presence of a suitable grinding medium to achieve the desired mean particle size for pigmentary applications.

7259195, Aug 21, 2007

Jan 16, 2004

10/759804

Modasser El-Shoubary - Crofton MD, US
Robert J. Kostelnik - Ellicott City MD, US

Millennium Inorganic Chemicals, Inc. - Hunt Valley MD

C08K 3/04, B32B 19/02, C08K 5/52

523205, 524127, 524431, 427218, 428357

A unique treatment for pigments is provided. This treatment, which uses certain organo-phosphoric acids and/or their salts, imparts improved physical and chemical qualities including lacing resistance, improved dispersion and decreased chemical reactivity when these treated pigments are incorporated into polymeric matrices.

8088853, Jan 3, 2012

Dec 21, 2006

11/643294

Robert J. Kostelnik - Ellicott City MD, US
Christopher J. Drury - Ulceby, GB
Charles A. Wheddon - Tetney, GB

Millennium Inorganic Chemicals, Inc. - Hunt Valley MD

C08K 5/24

524269, 524413, 524265, 524267

A particle of titanium dioxide treated with a polysiloxane is disclosed. One or more silicon atoms of the polysiloxane are substituted with an alkylene group that is terminated with a silyl group containing three substituents selected from the group consisting of hydroxy, halo, alkoxy, acetoxy, and mixtures thereof. These treated particles are blended with organic polymers.

8394873, Mar 12, 2013

Dec 2, 2011

13/310015

Robert J. Kostelnik - Ellicott City MD, US
Christopher J. Drury - Ulceby, GB
Charles A. Wheddon - Tetney, GB

Millennium Inorganic Chemicals, Inc. - Hunt Valley MD

C08K 9/06

523212, 524265, 524267, 524269, 524413

A particle of titanium dioxide treated with a polysiloxane is disclosed. One or more silicon atoms of the polysiloxane is substituted with an alkylene group terminating with a silyl group containing three substituents selected from the group consisting of hydroxy, halo, alkoxy, acetoxy, and mixtures thereof. These treated particles are blended with organic polymers to form a polyethylene polymer matrix having dispersed therein at least 55 wt % polysiloxane modified titanium dioxide particles.

2013014, Jun 13, 2013

Feb 7, 2013

13/761364

Robert J Kostelnik - Ellicott City MD, US
Christopher J. Drury - Ulceby North Lincolnshire, GB
Charles A. Wheddon - Tetney Lincolnshire, GB

C08K 9/06

428404, 524588, 428402

A particle of titanium dioxide treated with a polysiloxane is disclosed. One or more silicon atoms of the polysiloxane is substituted with an alkylene group terminating with a silyl group containing three substituents selected from the group consisting of hydroxy, halo, alkoxy, acetoxy, and mixtures thereof. These treated particles are blended with organic polymers to form a polyethylene polymer matrix having dispersed therein at least 55 wt % polysiloxane modified titanium dioxide particles.

6197104, Mar 6, 2001

May 4, 1998

9/072737

Robert J. Kostelnik - Ellicott City MD

Millennium Inorganic Chemicals, Inc. - Hunt Valley MD

C04B 1430, C09C 136

106447

The present invention discloses high solids slurries of anatase titanium dioxide pigment comprising greater than about 75% by weight of anatase TiO. sub. 2 pigment dispersed in water. A process for producing the slurries of the present invention is disclosed which comprises the steps of a) dry milling the anatase titanium dioxide pigment, preferably by pressure rolling, and b) mixing the dry milled pigment with water in the presence of an acrylic acid dispersant.

5653794, Aug 5, 1997

Dec 1, 1995

8/565852

Leon Weber - Baltimore MD
Robert J. Kostelnik - Ellicott City MD
Charles Wheddon - Tetney, GB2

SCM Chemicals, Inc. - Hunt Valley MD

C09C 136

106442

The present invention provides a process for the production of hydrophobic inorganic oxide products which comprises reacting the inorganic oxide particles with organohalosilanes, preferably organochlorosilanes, to produce hydrophobic organosilane coated inorganic oxides. It is preferred that the organohalosilane compounds be reacted with the inorganic oxide particles in an aqueous slurry. The inorganic oxide pigments prepared by the processes of this invention have essentially quantitative retention of the organosilanes and contain no adsorbed aldehydes on their surface. The by-products produced in the preferred embodiments of the invention are innocuous salts, which are environmentally safe and readily disposable.