Patents by Inventor Gregory R. Schulz
Gregory R. Schulz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9546286Abstract: Disclosed herein are resistive composites comprising at least one resin; at least one carbon black having a surface hydrophobically modified with at least one organic group, the at least one organic group having a molecular weight of the composite of 4000 or less and comprising the formula —X(G)-, wherein X is directly attached to the at least one carbon black and is selected from arylene, heteroarylene, and alkylene, G is a substituent of X, and —X(G)- is nonionic; and wherein the resistive composite has a volume resistivity, Rv, at a relative volume fraction, XCB, of the at least one carbon black in the coating, where Rv is at least 106 ohm-cm; and log Rv has a substantially linear relationship with XCB when XCB is varied from 0.1 to 0.5. Also disclosed are coatings made from such composites, such as coatings for rollers/belts for office automation machines, and methods of making such coatings.Type: GrantFiled: July 20, 2012Date of Patent: January 17, 2017Assignee: Cabot CorporationInventors: Eugene N. Step, Andriy Korchev, Agathagelos Kyrlidis, Clovis D. Haynes, Gregory R. Schulz, John R. Szwec
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Patent number: 9487657Abstract: The present invention provides a method for preparing conditioned pigments that have smaller diameter and increased color strength, masstone and travel by milling pigment with a dispersant comprising polyurethane. Further, the invention provides the conditioned pigments prepared by the method of the invention and their applications to paints, coatings, inks, plastics, optical devices, color filters and so forth.Type: GrantFiled: August 16, 2007Date of Patent: November 8, 2016Assignee: Sun Chemical CorporationInventors: Mark W. Johnson, Gregory R. Schulz
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Publication number: 20140126936Abstract: Disclosed herein are resistive composites comprising at least one resin; at least one carbon black having a surface hydrophobically modified with at least one organic group, the at least one organic group having a molecular weight of the composite of 4000 or less and comprising the formula —X(G)-, wherein X is directly attached to the at least one carbon black and is selected from arylene, heteroarylene, and alkylene, G is a substituent of X, and —X(G)- is nonionic; and wherein the resistive composite has a volume resistivity, volume fraction, XCB, of the at least one carbon black in the coating, where Rv is at least 106 ohm-cm; and log Rv has a substantially linear relationship with XCB when XCB is varied from 0.1 to 0.5. Also disclosed are coatings made from such composites, such as coatings for rollers/belts for office automation machines, and methods of making such coatings.Type: ApplicationFiled: July 20, 2012Publication date: May 8, 2014Applicant: CABOT CORPORATIONInventors: Eugene N. Step, Andriy Korchev, Agathagelos Kyrlidis, Clovis D. Haynes, Gregory R. Schulz, John R. Szwec
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Patent number: 8258203Abstract: The present invention pertains to a black inkjet ink comprising aqueous vehicle and carbon black pigment stabilized to dispersion by a certain block copolymer dispersant. The invention further pertains to an ink set comprising this black ink and at least a second ink which contains a reactive species capable of destabilizing the carbon black dispersion. Still further, the invention pertains to a method of printing wherein the black ink and second ink are printed in an overlapping relationship, thereby minimizing penetration, feathering and/or bleed of the black pigment and improving print quality.Type: GrantFiled: December 21, 2006Date of Patent: September 4, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Robert Paul Held, C. Chad Roberts, Gregory R. Schulz
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Publication number: 20110216125Abstract: This invention pertains to an aqueous based dispersion of Pigment Yellow 74 which uses a certain class of polymeric dispersants which dispersant is particularly effective at dispersing the pigment and preventing pigment particle growth on storage. The classes of polymeric dispersants are based on random copolymers of an ionic momomer and a hydrophobic monomer chosen from benzyl(meth)acrylate or alkyl(meth)acrylate where the alkyl group has four to ten carbon atoms and (meth)acrylic acid. The invention also pertains to an inkjet ink comprising this Pigment Yellow 74 dispersion.Type: ApplicationFiled: December 10, 2009Publication date: September 8, 2011Inventors: Christian Jackson, Robert Paul Held, C. Chad Roberts, Nathaniel Reed Schwartz, Gregory R. Schulz
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Publication number: 20080151027Abstract: The present invention pertains to a black inkjet ink comprising aqueous vehicle and carbon black pigment stabilized to dispersion by a certain block copolymer dispersant. The invention further pertains to an ink set comprising this black ink and at least a second ink which contains a reactive species capable of destabilizing the carbon black dispersion. Still further, the invention pertains to a method of printing wherein the black ink and second ink are printed in an overlapping relationship, thereby minimizing penetration, feathering and/or bleed of the black pigment and improving print quality.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Inventors: Robert Paul Held, C. Chad Roberts, Gregory R. Schulz
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Patent number: 6692562Abstract: This invention relates to a process of preparing a perylene pigment compositions containing a reactive co-precipitated blend of (1) about 75 to about 99.9 mol %, relative to the pigment composition, of a compound having the formula (I) wherein R is hydrogen, C1-C6 alkyl, C5-C8 cycloalkyl, C7-C16 aralkyl, or C6-C10 aryl, A is C1-C6 alkyl, C1-C6 alkoxy, a sulfonyl group, amino, ammonium, hydroxy, nitro, or halogen, and m is zero or a number from 1 to 8; and (2) about 0.1 to about 25 mol %, relative to the pigment composition, of a perylene dicarboxamidine imide having the formula (II) wherein W is optionally substituted or modified C2-C3 alkylene.Type: GrantFiled: March 8, 2002Date of Patent: February 17, 2004Assignee: Sun Chemical CorporationInventor: Gregory R. Schulz
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Publication number: 20030167971Abstract: This invention relates to a process of preparing a perylene pigment compositions containing a reactive co-precipitated blend ofType: ApplicationFiled: March 8, 2002Publication date: September 11, 2003Inventor: Gregory R. Schulz
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Patent number: 6440207Abstract: This invention relates to a process for preparing dispersible organic pigments by (a) milling a mixture containing (1) one or more organic pigments, (2) at least about 1% by weight, relative to the organic pigment, of one or more aromatic polyalkylene oxide dispersants, (3) 0 to about 10 parts by weight, relative to the organic pigment, of a milling liquid in which the organic pigment is substantially insoluble, (4) 0 to about 50% by weight, relative to the organic pigment, of one or more milling additives other than dispersant (2), and (5) 0 to about 20% by weight, relative to the organic pigment, of one or more surface treatment additives; (b) optionally, adding to the milled pigment (6) one or more liquids in which the organic pigment is substantially insoluble in amounts such that the total solids content is not reduced below about 10%, and (7) one or more multivalent metal salts and/or one or more quaternary ammonium salt; and (c) isolating the milled organic pigmentType: GrantFiled: March 3, 2000Date of Patent: August 27, 2002Assignee: Bayer CorporationInventor: Gregory R. Schulz
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Patent number: 6410619Abstract: This invention relates to a process for preparing conditioned organic pigments by (a) milling a mixture comprising: (1) one or more crude organic pigments; (2) at least about 0.1% by weight, relative to the organic pigment, of one or more acrylic copolymer dispersants; and (3) 0 to about 100 parts by weight, relative to the organic pigment, of a milling liquid in which the organic pigment is substantially insoluble; and (b) isolating the milled organic pigment.Type: GrantFiled: November 22, 1999Date of Patent: June 25, 2002Assignees: Bayer Corporation, E.I. DuPont De Nemours and CompanyInventors: Michael J. Greene, Patrick F. McIntyre, James G. King, Gregory R. Schulz, Karyn B. Visscher
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Patent number: 6403797Abstract: This invention relates to a process for preparing perylene pigment compositions by (a) reacting, at a temperature of less than about 25° C., a mixture of (1) a perylene tetracarboxylic compound, (2) at least about 0.1% by weight, relative to the perylene tetracarboxylic compound, of a surfactant of formula (I) wherein R1, R2, R3, X, Y, Z, and Z′ are defined herein, (3) an equivalent excess, relative to the amount of the perylene tetracarboxylic compound, of ammonia or a primary amine RA—NH2, wherein RA is defined herein, and (4) optionally, a solvent, to form a perylene intermediate; (b) heating the perylene intermediate at a temperature of about 50° C. to about 250° C., optionally in the presence of certain non-pigmentary cyclic anhydrides or imides and/or solvents; and (c) collecting the perylene pigment composition.Type: GrantFiled: December 22, 2000Date of Patent: June 11, 2002Assignee: Bayer CorporationInventors: Charles W. Sandefur, Brian L. Thompson, Michael J. Greene, Gregory R. Schulz
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Patent number: 6391104Abstract: This invention relates to perylene pigment compositions containing a reactive co-precipitated blend of (1) about 75 to about 99.9 mol %, relative to the pigment composition, of a compound having the formula (I) wherein R is hydrogen, C1-C6 alkyl, C5-C8 cycloalkyl, C7-C6 aralkyl, or C6-C10 aryl, A is C1-C6 alkyl, C1-C6 alkoxy, a sulfonyl group, amino, ammonium, hydroxy, nitro, or halogen, and m is zero or a number from 1 to 8; and (2) about 0.1 to about 25 mol %, relative to the pigment composition, of a perylene dicarboxamidine imide having the formula (II) wherein W is optionally substituted or modified C2-C3 alkylene, and R, A, and m are defined as above.Type: GrantFiled: December 1, 2000Date of Patent: May 21, 2002Assignee: Bayer CorporationInventor: Gregory R. Schulz
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Publication number: 20010042492Abstract: This invention relates to a process for preparing conditioned organic pigments byType: ApplicationFiled: November 22, 1999Publication date: November 22, 2001Inventors: MICHAEL J. GREENE, Patrick F. McIntyre, James G. King, Gregory R. Schulz, Karyn B. Visscher
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Patent number: 6224665Abstract: This invention relates to a process for preparing perylene pigment compositions by reaction of (a) a perylene tetracarboxylic compound; (b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide of formula (I) wherein W is O or NR1 (where R1 is hydrogen, a metal, or optionally substituted alkyl, cycloalkyl, aralkyl, or aryl), R2, R3, and R4 are various combinations of substituents and/or fused-on rings, and the dotted line is an optional double bond representing R2−C=C—R3; (c) ammonia or a primary alkyl, aralkyl, or aryl amine; optionally in the presence of (d) a solvent and/or (e) one or more dispersants.Type: GrantFiled: January 25, 2000Date of Patent: May 1, 2001Assignee: Bayer CorporationInventors: Gregory R. Schulz, Michael J. Greene
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Patent number: 6153764Abstract: This invention relates to a process for preparing perylene pigment compositions by reaction of(a) a perylene tetracarboxylic compound;(b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide of formula (I) ##STR1## wherein W is O or NR.sup.1 (where R.sup.1 is hydrogen, a metal, or optionally substituted alkyl, cycloalkyl, aralkyl, or aryl), R.sup.2, R.sup.3, and R.sup.4 are various combinations of substituents and/or fused-on rings, and the dotted line is an optional double bond representing R.sup.2 --C.dbd.C--R.sup.3 ;(c) ammonia or a primary alkyl, aralkyl, or aryl amine; optionally in the presence of(d) a solvent and/or(e) one or more dispersants.Type: GrantFiled: January 25, 2000Date of Patent: November 28, 2000Assignee: Bayer CorporationInventors: Gregory R. Schulz, Michael J. Greene
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Patent number: 6143068Abstract: This invention relates to a process for preparing perylene pigment compositions by reaction of(a) a perylene tetracarboxylic compound;(b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide of formula (I) ##STR1## wherein W is O or NR' (where R.sup.1 is hydrogen, a metal, or optionally substituted alkyl, cycloalkyl, aralkyl, or aryl), R.sup.2, R.sup.3, and R.sup.4 are various combinations of substituents and/or fused-on rings, and the dotted line is an optional double bond representing R.sup.2 --C.dbd.C--R.sup.3 ;(c) ammonia or a primary alkyl, aralkyl, or aryl amine; optionally in the presence of(d) a solvent and/or(e) one or more dispersants.Type: GrantFiled: January 25, 2000Date of Patent: November 7, 2000Assignee: Bayer CorporationInventors: Gregory R. Schulz, Michael J. Greene
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Patent number: 6039769Abstract: This invention relates to a process for preparing perylene pigment compositions by reaction of(a) a perylene tetracarboxylic compound;(b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide of formula (I) ##STR1## wherein W is O or NR.sup.1 (where R.sup.1 is hydrogen, a metal, or optionally substituted alkyl, cycloalkyl, aralkyl, or aryl), R.sup.2, R.sup.3, and R.sup.4 are various combinations of substituents and/or fused-on rings, and the dotted line is an optional double bond representing R.sup.2 --C.dbd.C--R.sup.3 ;(c) ammonia or a primary alkyl, aralkyl, or aryl amine; optionally in the presence of(d) a solvent and/or(e) one or more dispersants.Type: GrantFiled: December 15, 1998Date of Patent: March 21, 2000Assignee: Bayer CorporationInventors: Gregory R. Schulz, Michael J. Greene
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Patent number: 6015458Abstract: This invention relates to a process for preparing perylene pigment compositions by reaction of(a) a perylene tetracarboxylic compound;(b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide of formula (I) ##STR1## wherein W is O or NR.sup.1 (where R.sup.1 is hydrogen, a metal, or optionally substituted alkyl, cycloalkyl, aralkyl, or aryl), R.sup.2, R.sup.3, and R.sup.4 are various combinations of substituents and/or fused-on rings, and the dotted line is an optional double bond representing R.sup.2 --C.dbd.C--R.sup.3 or R.sup.3 --C.dbd.C--R.sup.4 ; and(c) ammonia or a primary alkyl, aralkyl, or aryl amine;optionally in the presence of(d) a solvent and/or(e) one or more dispersants.Type: GrantFiled: December 15, 1998Date of Patent: January 18, 2000Assignee: Bayer CorporationInventors: Gregory R. Schulz, Michael J. Greene