GREGORY J MEHOS
Engineering in Graniteville, MA
License number
Massachusetts 39736
Issued Date
Jan 30, 1997
Expiration Date
Jun 30, 2018
Type
Chemical Engineer
Address
Address
Graniteville, MA 01886
Professional information
Methods For Preparing Silica-Coated Carbon Products
US Patent:
6541113, Apr 1, 2003
Filed:
Jul 22, 1999
Appl. No.:
09/359016
Inventors:
Gregory Mehos - Westford MA
Hairuo Tu - Burlington MA
Hairuo Tu - Burlington MA
Assignee:
Cabot Corporation - Boston MA
International Classification:
B32B 516
US Classification:
428403, 427215, 427219, 428404
Abstract:
Methods of making a silica-coated carbon product are described. In one method, an aqueous media or solution and a carbon product are contacted with a solution comprising a silicate substantially free of metal ions, for a sufficient time and temperature to form the silica-coated carbon product. A method of making a silica-coated product by contacting the aqueous media and a carbon product with a solution comprising monosilicic acid is also described as well as exchanging metal ions in a solution comprising metallic silicate for hydrogen ions and contacting an aqueous media and a carbon product with the solution to form silica-coated carbon products. Silica-coated carbon products resulting from these methods are also described and include a plurality of silica-coated products wherein each of the silica-coated products are substantially and uniformly coated with silica and in the substantial absence of free silica. Also, elastomeric compositions and the like containing the silica-coated carbon products are described.
Polymers Containing Modified Pigments And Methods Of Preparing The Same
US Patent:
2002000, Jan 17, 2002
Filed:
Jan 24, 2001
Appl. No.:
09/768492
Inventors:
Khaled Mahmud - Natick MA, US
James Belmont - Acton MA, US
Yakov Kutsovsky - Arlington MA, US
Wayne Devonport - Tewksbury MA, US
Meng-Jiao Wang - Lexington MA, US
Collin Galloway - Nashua NH, US
Gregory Mehos - Westford MA, US
James Belmont - Acton MA, US
Yakov Kutsovsky - Arlington MA, US
Wayne Devonport - Tewksbury MA, US
Meng-Jiao Wang - Lexington MA, US
Collin Galloway - Nashua NH, US
Gregory Mehos - Westford MA, US
International Classification:
C08K009/00, C08K003/04
US Classification:
523/215000, 524/495000
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.
Polymers Containing Modified Pigments And Methods Of Preparing The Same
US Patent:
2002002, Mar 7, 2002
Filed:
Sep 13, 2001
Appl. No.:
09/952315
Inventors:
Khaled Mahmud - Natick MA, US
James Belmont - Acton MA, US
Yakov Kutsovsky - Arlington MA, US
Wayne Devonport - Tewksbury MA, US
Meng-Jiao Wang - Lexington MA, US
Collin Galloway - Nashua NH, US
Gregory Mehos - Westford MA, US
James Belmont - Acton MA, US
Yakov Kutsovsky - Arlington MA, US
Wayne Devonport - Tewksbury MA, US
Meng-Jiao Wang - Lexington MA, US
Collin Galloway - Nashua NH, US
Gregory Mehos - Westford MA, US
International Classification:
C02F001/24
US Classification:
210/770000, 210/705000, 210/716000
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.