Wayne Devonport

US Patent:

6337358, Jan 8, 2002

Filed:

Oct 29, 1998

Appl. No.:

09/181926

Inventors:

Robert S. Whitehouse - Lexington MA
Wayne Devonport - Tewksbury MA
Russell L. Warley - Hudson NH
Thimma Rawalpally - Florence SC
Hairuo Tu - Burlington MA

Assignee:

Cabot Corporation - Boston MA

International Classification:

C08K 900

US Classification:

523200, 523215, 523216, 25218314

Abstract:

A modified particle is disclosed wherein a particle has an attached group having the formula: wherein A represents an aromatic group or an alkyl group; R represents a bond, an arylene group, an alkylene group, wherein R is an alkyl or alkylene group or an aryl or arylene group; R and R , which can be the same or different, represent hydrogen, an alkyl group, an aryl group, âOR , âNHR , âNR R , or âSR , wherein R , which is the same or different, represents an alkyl group or an aryl group; and SFR represents a stable free radical. Also disclosed is a modified particle or aggregate having attached a group having the formula: wherein CoupA represents a Si-containing group, a Ti-containing group, a Cr-containing group or a Zr-containing group; R and R , which can be the same or different, represent hydrogen, an alkyl group, an aryl group, âOR , âNHR , âNR R , or âSR , wherein R represents an alkyl group or an aryl group; SFR represents a stable free radical; and n is an integer of from to. A modified particle having an attached âSFR or âXâSFR is additionally disclosed. Also, modified particles with attached polymers are also disclosed as well as methods of making the modified particles.

US Patent:

6350519, Feb 26, 2002

Filed:

Jun 2, 1999

Appl. No.:

09/324315

Inventors:

Wayne Devonport - Tewksbury MA

Assignee:

Cabot Corporation - Boston MA

International Classification:

B52B 516

US Classification:

428403, 428405, 428407, 106472, 106473, 106474, 523213, 523215, 523216, 523160, 524176, 524263

Abstract:

A modified particle or aggregate is disclosed wherein a particle has an attached group having the formula: wherein the substituents are defined in the disclosure. Modified particles with attached polymers are also disclosed as well as methods of making the modified products.

US Patent:

6368239, Apr 9, 2002

Filed:

Jun 3, 1998

Appl. No.:

09/089363

Inventors:

Wayne Devonport - Tewksbury MA
Robert S. Whitehouse - Lexington MA
Russell L. Warley - Erie PA
Thimma R. Rawalpally - Florence SC
Hairuo Tu - Burlington MA

Assignee:

Cabot Corporation - Boston MA

International Classification:

C01D 300

US Classification:

4734492, 4234499, 524496, 106 316, 106 3175

Abstract:

A modified particle is disclosed wherein a particle has an attached group having the formula: wherein Ar represents an aromatic group; R represents a bond, an arylene group, an alkylene group, wherein R is an alkyl or alkylene group or an aryl or arylene group; R and R , which can be the same or different, represent hydrogen, an alkyl group, an aryl group, âOR , âNHR , âNR R , or âSR , wherein R , which is the same or different, represents an alkyl group or an aryl group; and SFR represents a stable free radical. Also disclosed is a modified particle or aggregate having attached a group having the formula: wherein CoupA represents a Si-containing group, a Ti-containing group, or a Zr-containing group; R and R , which can be the same or different, represent hydrogen, an alkyl group, an aryl group, âOR , âNHR , âNR R , or âSR , wherein R represents an alkyl group or an aryl group; SFR represents a stable free radical; and n is an integer of from 1 to 3. A modified particle having an attached âSFR or âXâSFR is additionally disclosed. Also, modified particles with attached polymers are also disclosed as well as methods of making the modified particles.

US Patent:

6372820, Apr 16, 2002

Filed:

May 4, 2000

Appl. No.:

09/564712

Inventors:

Wayne Devonport - Tewksbury MA

Assignee:

Cabot Corporation - Boston MA

International Classification:

C08K 904

US Classification:

523215, 523202, 523205, 524495, 524570, 524571, 524575, 5245755, 106 3113, 106 316, 152151

Abstract:

Various modified particles are described which can be used in polymerizations to attach one or more polymers onto modified particles. Also described are the resulting modified particles having attached monomer or polymer groups as well as methods of preparing such modified particles. The polymer groups on the modified particles can be terminated and these various modified particles with attached groups can be used in a variety of end uses.

US Patent:

6534569, Mar 18, 2003

Filed:

Jan 24, 2001

Appl. No.:

09/768492

Inventors:

Khaled Mahmud - Natick MA
James A. Belmont - Acton MA
Yakov E. Kutsovsky - Arlington MA
Wayne Devonport - Tewksbury MA
Meng-Jiao Wang - Lexington MA
Collin P. Galloway - Nashua NH
Gregory J. Mehos - Westford MA

Assignee:

Cabot Corporation - Boston MA

International Classification:

C08K 300

US Classification:

523333

Abstract:

A variety of methods to prepare a polymer composition containing at least one polymer and at least one modified pigment are described. The methods, in part, involve introducing a slurry containing at least one modified pigment into an emulsion or solution polymer prior to dewatering. Other polymer systems can be used including aqueous based polymerizations and solvent-based polymerizations, which can include free radical polymerizations. Other methods involve the formation of a modified pigment in the presence of an emulsion or solution polymer and then recovering the polymer composition containing the modified pigment. Compositions containing at least one modified pigment and the emulsion or solution polymer are also described as well as uses for the polymer compositions of the present invention.

US Patent:

6551393, Apr 22, 2003

Filed:

Feb 1, 2002

Appl. No.:

10/061948

Inventors:

Wayne Devonport - Tewksbury MA
Robert S. Whitehouse - Lexington MA
Russell L. Warley - Erie PA
Thimma R. Rawalpally - Florence SC
Hairuo Tu - Burlington MA

Assignee:

Cabot Corporation - Boston MA

International Classification:

C09D 1100

US Classification:

106 316, 106 3175, 106472, 106473, 4234492, 4234499, 524495, 524496, 524513, 524514, 524528, 524521, 524523, 525165, 525175, 525192

Abstract:

A modified particle is disclosed wherein a particle has an attached group having the formula: wherein Ar represents an aromatic group; R represents a bond, an arylene group, an alkylene group, wherein R is an alkyl or alkylene group or an aryl or arylene group; R and R , which can be the same or different, represent hydrogen, an alkyl group, an aryl group, âOR , âNHR , âNR R , or âSR , wherein R , which is the same or different, represents an alkyl group or an aryl group; and SFR represents a stable free radical. Also disclosed is a modified particle or aggregate having attached a group having the formula: wherein CoupA represents a Si-containing group, a Ti-containing group, or a Zr-containing group; R and R , which can be the same or different, represent hydrogen, an alkyl group, an aryl group, âOR , âNHR , âNR R , or âSR , wherein R represents an alkyl group or an aryl group; SFR represents a stable free radical; and n is an integer of from 1 to 3. A modified particle having an attached âSFR or âXâSFR is additionally disclosed. Also, modified particles with attached polymers are also disclosed as well as methods of making the modified particles.

US Patent:

6664312, Dec 16, 2003

Filed:

Jan 7, 2002

Appl. No.:

10/040840

Inventors:

Wayne Devonport - Tewksbury MA

Assignee:

Cabot Corporation - Boston MA

International Classification:

C08K 904

US Classification:

523205, 523160, 523161, 523209, 523275, 523216

Abstract:

A modified particle or aggregate is disclosed wherein a particle has an attached group having the formula: wherein the substituents are defined in the disclosure. Modified particles with attached polymers are also disclosed as well as methods of making the modified products.

US Patent:

6852158, Feb 8, 2005

Filed:

Mar 27, 2003

Appl. No.:

10/401130

Inventors:

James A. Belmont - Acton MA, US
Wayne Devonport - Doylestown PA, US

Assignee:

Cabot Corporation - Boston MA

International Classification:

C09C001/04

US Classification:

106499, 106429, 106447, 106465, 106472, 106473, 106474, 106475, 106476, 106491

Abstract:

A method of attaching one or more organic groups onto a particle is described which involves reacting at least one radical with at least one particle wherein the radical is generated from the interaction of at least one transition metal compound with at least one organo-halide compound in the presence of one or more particles capable of radical capture. Variations of this method are also described.