Patents by Inventor Robert J. Pickwell

Robert J. Pickwell 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).

  • Patent number: 7902391
    Abstract: A composition of matter is disclosed that comprises at least one silane coupling agent for coupling an elastomer and a filler wherein said silane comprises at least one hydrolysable group that, upon compounding said silane with said elastomer and filler, is released to yield a compound that improves downstream processability of the compounded composition or the properties of the final rubber product or both.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: March 8, 2011
    Assignee: Momentive Performance Materials Inc.
    Inventors: Richard W. Cruse, Robert J. Pickwell
  • Publication number: 20090203836
    Abstract: A composition of matter is disclosed that comprises at least one silane coupling agent for coupling an elastomer and a filler wherein said silane comprises at least one hydrolysable group that, upon compounding said silane with said elastomer and filler, is released to yield a compound that improves downstream processability of the compounded composition or the properties of the final rubber product or both.
    Type: Application
    Filed: April 9, 2009
    Publication date: August 13, 2009
    Applicant: MOMENTIVE PERFORMANCE MATERIALS INC.
    Inventors: Richard W. Cruse, Robert J. Pickwell
  • Patent number: 7531588
    Abstract: Silane compositions of the general formula are provided herein comprising [(RO)x(R1)(3-x)—Si-Mt]q-L-[(Ra)cAr—(CR2?CR22)y]z wherein R and R1 are independently a hydrocarbon group of from 1 to about 20 carbon atoms; R2 are each independently hydrogen or a hydrocarbon group of from 1 to about 20 carbon atoms; M optionally is a divalent hydrocarbon connecting group of from 1 to about 20 carbon atoms to link the silicon atom and the L group; L is a covalently bound hydrocarbon linking group of from 1 to about 20 carbon atoms or a heteroatom linking group selected from the group consisting of —O—, —S—, —NR3— wherein R3 is hydrogen or a hydrocarbon group of from 1 to about 20 carbon atoms; Ra is an alkyl group of 1 to 12 carbon atoms; Ar is a substituted or unsubstituted aromatic group; q is an integer of 1 to 4; t and c are each independently 0 or 1; and x, y and z are each independently integers of 1 to 3, inclusive, with the proviso that t is 1 when L is a heteroatom group.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: May 12, 2009
    Assignee: Momentive Performance Materials Inc.
    Inventors: Keith J. Weller, Lesley Hwang, Richard W. Cruse, Leda Gonzalez, Robert J. Pickwell, Martin Hofstetter, Wesley E. Sloan, Prashant G. Joshi
  • Patent number: 7531680
    Abstract: A composition of matter is disclosed that comprises at least one silane coupling agent for coupling an elastomer and a filler wherein said silane comprises at least one hydrolysable group that, upon compounding said silane with said elastomer and filler, is released to yield a compound that improves downstream processability of the compounded composition or the properties of the final rubber product or both.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: May 12, 2009
    Assignee: Momentive Performance Materials Inc.
    Inventors: Richard W. Cruse, Robert J. Pickwell
  • Patent number: 7138537
    Abstract: A composition of matter is disclosed that comprises at least one silane coupling agent for coupling an elastomer and a filler wherein said silane comprises at least one hydrolyzable group that, upon compounding said silane with said elastomer and filler, is released to yield a compound that improves downstream processability of the compounded composition or the properties of the final rubber product or both.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: November 21, 2006
    Assignee: General Electric Company
    Inventors: Richard W. Cruse, Robert J. Pickwell
  • Patent number: 7122590
    Abstract: Disclosed herein is a process of manufacturing a filled rubber comprising the steps of: mixing a rubber, an inorganic filler, and a blocked mercaptosilane of a structure defined herein, to produce a rubber mixture; mixing into the rubber mixture; (i) a deblocking agent to deblock the blocked mercaptosilane, and (ii) a curing agent; and allowing the rubber mixture to cure.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: October 17, 2006
    Assignee: General Electric Company
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
  • Patent number: 7081500
    Abstract: Blocked mercaptosilanes are provided in which the blocking group contains and unsaturated heteroatom or carbon chemically bound directly to sulfur via a single bond. This blocking group optionally may be substituted with one or more carboxylate ester or carboxylic acid functional groups. These silanes are used in manufacture of inorganic filled rubbers, with the silanes deblocked by a deblocking agent. Synthesis of the blocked mercaptosilanes is also provided.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: July 25, 2006
    Assignee: General Electric Company
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
  • Patent number: 7078551
    Abstract: A blocked mercaptosilane of the structure: G-C(?O)—S—CH2CH2CH2SiX3 is disclosed wherein each X is an independently selected RO— group or R— group wherein each R is independently selected from the group consisting of hydrogen, alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, such moieties other than hydrogen having from 1 to 18 carbon atoms, at least one X is RO—, and G is a monovalent alkyl group.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: July 18, 2006
    Assignee: General Electric Company
    Inventors: Richard W. Cruse, Robert J. Pickwell, Eric Raymond Pohl, Keith J. Weller
  • Patent number: 7074876
    Abstract: Disclosed herein is a blocked mercaptosilane selected from the group consisting of [[(ROC(?O))p—(G)j]k—Y—S]r—G—(SiX3)s; and??(1) [(X3Si)q—G]a—[Y—[S—G—SiX3]b]c??(2) wherein Y is a polyvalent species (Q)zA(?E) selected from the group consisting of —C(?NR)—; —SC(?NR)—; —SC(?O)—; —OC(?O)—; —S(?O)—; —S(?O)2—; —OS(?O)2—; (—NR)S(?O)2—; —SS(?O)—; —OS(?O)—; (—NR)S(?O)—; —SS(?O)2—; (—S)2P(?O)—; —(—S)P(?O)—; —P(?O)(—)2; (—S)2P(?S)—; —(—S)P(?S)—; —P(?S)(—)2; (—NR)2P(?O)—; (—NR)(—S)P(?O)—; (—O)(—NR)P(?O)—; (—O)(—S)P(?O)—; (—O)2P(?O)—; —(—O)P(?O)—; —(—NR)P(?O)—; (—NR)2P(?S)—; (—NR)(—S)P(?S)—; (—O)(—NR)P(?S)—; (—O)(—S)P(?S)—; (—O)2P(?S)—; —(—O)P(?S)—; and —(—NR)P(?S)—; wherein the atom A attached to unsaturated heteroatom E is attached to the sulfur which in turn is linked via a group G to the silicon atom; each R is chosen independently from hydrogen, straight, cyclic, or branched alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, with each R containing from 1 to 18 c
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: July 11, 2006
    Assignee: General Electric Company
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
  • Publication number: 20040210001
    Abstract: A blocked mercaptosilane of the structure: G-C(═O)—S—CH2CH2CH2SiX3 is disclosed wherein each X is an independently selected RO— group or R— group wherein each R is independently selected from the group consisting of hydrogen, alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, such moieties other than hydrogen having from 1 to 18 carbon atoms, at least one X is RO—, and G is a monovalent alkyl group.
    Type: Application
    Filed: April 30, 2004
    Publication date: October 21, 2004
    Inventors: Richard W. Cruse, Robert J. Pickwell, Eric Raymond Pohl, Keith J. Weller
  • Publication number: 20040198881
    Abstract: A composition of matter is disclosed that comprises at least one silane coupling agent for coupling an elastomer and a filler wherein said silane comprises at least one hydrolysable group that, upon compounding said silane with said elastomer and filler, is released to yield a compound that improves downstream processability of the compounded composition or the properties of the final rubber product or both.
    Type: Application
    Filed: April 2, 2003
    Publication date: October 7, 2004
    Applicant: CROMPTON CORPORATION
    Inventors: Richard W. Cruse, Robert J. Pickwell
  • Patent number: 6683135
    Abstract: Disclosed herein is a rubber composition comprising: a) a blocked mercaptosilane of a defined structure, wherein the blocking group contains an unsaturated heteroatom or carbon chemically bound directly to sulfur via a single bond and, optionally, may be substituted with one or more carboxylate ester or carboxylic acid functional groups; b) an organic polymer; c) a filler; and d) a deblocking agent.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: January 27, 2004
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R Pohl
  • Publication number: 20030225195
    Abstract: Disclosed herein is a rubber composition comprising:
    Type: Application
    Filed: February 10, 2003
    Publication date: December 4, 2003
    Applicant: Crompton Corporation
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric Pohl
  • Patent number: 6635700
    Abstract: A composition of matter is disclosed wherein the composition comprises: A) at least one latent mercaptosilane coupling agent; and B) at least one additional mercaptan. Preferably, the composition comprises: A) at least one sulfur vulcanizable rubber; B) at least one latent mercaptosilane coupling agent; C) at least one latent mercaptosilane activator; D) at least one filler; and, optionally, E) at least one additional mercaptosilane. A two pass process for preparing cured articles, such as tires and/or tire treads, which employs the composition is also disclosed.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: October 21, 2003
    Assignee: Crompton Corporation
    Inventors: Richard W. Cruse, Martin J. Hannon, Prashant G. Joshi, Frederick D. Osterholtz, Robert J. Pickwell
  • Patent number: 6608125
    Abstract: A blocked mercaptosilane of the structure: G—C(═O)—S—CH2CH2CH2SiX3 is disclosed wherein each X is an independently selected RO— group wherein each R is independently selected from the group consisting of hydrogen, alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, such moieties other than hydrogen having from 1 to 18 carbon atoms, and G is a monovalent alkyl of from 2 to 12 carbon atoms.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: August 19, 2003
    Assignee: Crompton Corporation
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
  • Patent number: 6528673
    Abstract: Disclosed herein is a process for the manufacture of a blocked mercaptosilane wherein the process is selected from the group consisting of: (1) reacting a mercaptosilane and a monoacid anhydride corresponding to a thioester group present in the desired product; (2) reacting an alkali salt of a mercaptosilane with the appropriate acid anhydride or acid halide; (3) transesterifying a mercaptosilane and an ester in the presence of an alkali metal of an acid corresponding to the ester; (4) transesterifying a thioester silane and another ester; (5) transesterifying a 1-sila-2-thiacyclopentane or a 1-sila-2-thiacyclohexane and an ester; and (6) reacting an alkali metal salt of a thioacid with a haloalkylsilane.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: March 4, 2003
    Assignee: Crompton Corporation
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
  • Publication number: 20020115767
    Abstract: A composition of matter is disclosed wherein the composition comprises:
    Type: Application
    Filed: December 15, 2000
    Publication date: August 22, 2002
    Inventors: Richard W. Cruse, Martin J. Hannon, Prashant G. Joshi, Frederick D. Osterholtz, Robert J. Pickwell
  • Publication number: 20020099118
    Abstract: Disclosed herein is a rubber composition comprising:
    Type: Application
    Filed: November 9, 2001
    Publication date: July 25, 2002
    Applicant: WITCO CORPORATION, a corporation of the State of Delaware
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
  • Patent number: 6414061
    Abstract: This invention describes novel blocked mercaptosilanes wherein the hydrogen atom of the mercaptan functionality has been substituted. The invention includes methods of preparation for the blocked mercaptosilicon compounds as well as their use in filled rubbers. The blocked mercaptosilanes described are unique in that they allow the mixing of fillers with organic polymers to proceed while remaining inert toward coupling to the polymer. The coupling reactions of these blocked mercaptosilicon compounds are triggered by addition of an appropriate deblocking agent.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: July 2, 2002
    Assignee: Crompton Corporation
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
  • Publication number: 20020055564
    Abstract: Disclosed herein is a blocked mercaptosilane selected from the group consisting of
    Type: Application
    Filed: November 9, 2001
    Publication date: May 9, 2002
    Applicant: WITCO CORPORATION
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl