Patents by Inventor Babu N. Gaddam

Babu N. Gaddam 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).

  • PRESSURE SENSITIVE ADHESIVE COMPRISING FUNCTIONALIZED POLYISOBUTYLENE HYDROGEN BONDED TO ACYLIC POLYMER
    Publication number: 20120285618
    Abstract: A pressure sensitive adhesive composition is described comprising a polyisobutylene polymer having a first functional group and an acrylic polymer having a second functional group present in the acrylic polymer backbone. The first and second functional groups form a hydrogen bond. In some embodiments, the adhesive composition further comprises a crosslinker that covalently crosslinks the second functional group(s) present in the polymer backbone of the acrylic polymer. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.
    Type: Application
    Filed: November 15, 2010
    Publication date: November 15, 2012
    Inventors: Vivek Bharti, Guy D. Joly, Shujun Wang, Peiwang Zhu, Babu N. Gaddam, Sanat Mohanty, Jingjing Ma
  • CROSSLINKABLE SYRUP COPOLYMERS WITH AMINOALKYL (METH)ACRYLOYL SOLVENT MONOMERS
    Publication number: 20120252980
    Abstract: A pre-adhesive syrup polymer composition is described comprising an acid-functional (meth)acrylate copolymer and an aminoalkyl (meth)acryloyl solvent monomer, which when polymerized, provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.
    Type: Application
    Filed: June 6, 2012
    Publication date: October 4, 2012
    Inventors: Belma Erdogan-Haug, Maureen A. Kavanagh, Marie Aloshyna ep Lesuffleur, Larry R. Krepski, Babu N. Gaddam
  • PRESSURE SENSITIVE ADHESIVE COMPRISING BLEND OF SYNTHETIC RUBBER AND FUNCTIONALIZED SYNTHETIC RUBBER BONDED TO AN ACYLIC POLYMER
    Publication number: 20120216953
    Abstract: A pressure sensitive adhesive composition is described comprising unfunctionalized (e.g. polyisobutylene) synthetic rubber and an acrylic polymer having functionalized polyisobutylene polymer bonded to the acrylic polymer. In some embodiments, the functionalized polyisobutylene polymer has a first functional group hydrogen bonded with a second functional group present in the acrylic polymer backbone. In other embodiments, the functionalized polyisobutylene polymer is covalently bonded to the acrylic polymer backbone. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.
    Type: Application
    Filed: November 15, 2010
    Publication date: August 30, 2012
    Inventors: Vivek Bharti, Shujun Wang, Guy D. Joly, Babu N. Gaddam, Jingjing Ma, Sanat Mohanty, Peiwang Zhu
  • ADDITION-FRAGMENTATION AGENTS
    Publication number: 20120208965
    Abstract: Addition-fragmentation agents of the formula are disclosed: wherein R1, R2 and R3 are each independently Z-Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R1, R2 and R3 is Zm-Q-, Q is a linking group have a valence of m+1; Z is an ethylenically unsaturated polymerizable group, m is 1 to 6; each X1 is independently —O— or —NR4—, where R4 is H or C1-C4 alkyl, and n is 0 or 1.
    Type: Application
    Filed: June 27, 2011
    Publication date: August 16, 2012
    Inventors: Guy D. Joly, Larry R. Krepski, Ann R. Fornof, Serkan Yurt, Babu N. Gaddam, Ahmed S. Abuelyaman
  • ISOBUTYLENE COPOLYMER WITH GRAFTED POLYMER GROUPS
    Publication number: 20120208013
    Abstract: Disclosed are copolymers which comprise: a) an isobutylene copolymer having grafted polymer groups, b) optionally a tackifier, and c) optionally a non-functionalized poly(isobutylene) polymer. The compositions are useful in adhesives and coatings.
    Type: Application
    Filed: February 15, 2011
    Publication date: August 16, 2012
    Inventors: Jason D. Clapper, Hae-Seung Lee, Joon Chatterjee, Babu N. Gaddam
  • Cured hydrophilic compositions
    Patent number: 8232332
    Abstract: A curable composition is described, including a gel material derived from the curable composition, and medical articles including such material, wherein the transparent gel material includes a polymerized monofunctional poly(alkylene oxide) macromonomer component and a surface modified nanoparticle component.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: July 31, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Kelly S. Anderson, Kevin M. Lewandowski, David J. Plaut, Wendy L. Thompson, Babu N. Gaddam
  • Crosslinkable syrup copolymers with aminoalkyl (meth)acryloyl solvent monomers
    Patent number: 8222340
    Abstract: A pre-adhesive syrup polymer composition is described comprising an acid-functional (meth)acrylate copolymer and an aminoalkyl (meth)acryloyl solvent monomer, which when polymerized, provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: July 17, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Belma Erdogan-Haug, Maureen A. Kavanagh, Marie Aloshyna ep Lesuffleur, Larry R. Krepski, Babu N. Gaddam
  • MOISTURE CURABLE ISOBUTYLENE ADHESIVE COPOLYMERS
    Publication number: 20120141787
    Abstract: The disclose provides pressure-sensitive adhesives and adhesive sealants prepared from alkoxysilane modified, crosslinked isobutylene copolymers, and tape articles prepared therefrom.
    Type: Application
    Filed: November 2, 2011
    Publication date: June 7, 2012
    Inventors: Hae-Seung Lee, Joon Chatterjee, Babu N. Gaddam, Gregg A. Caldwell
  • UV CURABLE ANHYDRIDE-MODIFIED POLY(ISOUTYLENE)
    Publication number: 20120123011
    Abstract: An adhesive (co)polymers comprising: a) an isobutylene copolymer having pendent anhydride groups, b) a polyamine photobase generator and c) optionally a tackifier is described.
    Type: Application
    Filed: October 25, 2011
    Publication date: May 17, 2012
    Inventors: Hae-Seung Lee, Joon Chatterjee, Gregg A. Caldwell, Babu N. Gaddam
  • IONICALLY CROSSLINKABLE POLY(ISOBUTYLENE) ADHESIVE POLYMERS
    Publication number: 20120122359
    Abstract: Adhesive (co)polymers of this disclosure comprise: a) an isobutylene copolymer having pendent succinate groups and optionally a tackifier. The pendent succinic acid groups ionically crosslinks the isobutylene copolymer by hydrogen boding with adjacent pendent succinic acid groups.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 17, 2012
    Inventors: Hae-Seung Lee, Joon Chatterjee, Gregg A. Caldwell, Babu N. Gaddam
  • RADIATION CURABLE POLY(ISOBUTYLENE) ADHESIVE COPOLYMERS
    Publication number: 20120082847
    Abstract: The disclose provides pressure-sensitive adhesives and adhesive sealants prepared from modified, crosslinked isobutylene copolymers, and tape articles prepared therefrom.
    Type: Application
    Filed: June 27, 2011
    Publication date: April 5, 2012
    Inventors: Hae-Seung Lee, Guy D. Joly, Joon Chatterjee, Marie Aloshyna ep Lesuffleur, Jay M. Jennen, Jingjing Ma, Gregg A. Caldwell, Babu N. Gaddam, Larry R. Krepski
  • Acrylic pressure-sensitive adhesives with aziridinyl-epoxy crosslinking system
    Patent number: 8148471
    Abstract: A pre-adhesive composition is described comprising an acid-functional (meth)acrylate copolymer and a crosslinking system comprising an aziridine crosslinking agent and epoxy-functional (meth)acryloyl monomer, which when crosslinked, provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: April 3, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Maureen A. Kavanagh, Larry R. Krepski, Kelly S. Anderson, Peiwang Zhu, Belma Erdogan-Haug, Babu N. Gaddam
  • ACRYLIC PRESSURE-SENSITIVE ADHESIVES WITH ACYLAZIRIDINE CROSSLINKING AGENTS
    Publication number: 20120028043
    Abstract: A pre-adhesive composition is described comprising an acid-functional (meth)acrylate copolymer and an acylaziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.
    Type: Application
    Filed: October 6, 2011
    Publication date: February 2, 2012
    Inventors: Belma Erdogan, Timothy D. Filiatrault, Maureen A. Kavanagh, Larry R. Krepski, Babu N. Gaddam
  • Dental compositions containing carbosilane polymers
    Patent number: 8084515
    Abstract: Carbosilane-containing polymers (including oligomers) having the following structural features: greater than one repeat unit; at least four Si-arylene bonds; at least one (meth)acrylate moiety, Si—H moiety, or both; no Si—O bonds; preferably at least four silicon atoms; wherein two silicon atoms are separated by one arylene group in each repeat unit.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: December 27, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Kevin M. Lewandowski, Ahmed S. Abuelyaman, Todd D. Jones, Babu N. Gaddam, Sumita B. Mitra, Naimul Karim, Adrian S. Eckert, Peter Bissinger
  • Acrylic pressure-sensitive adhesives with acylaziridine crosslinking agents
    Patent number: 8067504
    Abstract: A pre-adhesive composition is described comprising an acid-functional (meth)acrylate copolymer and an acylaziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: November 29, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Belma Erdogan, Timothy D. Filiatrault, Maureen A. Kavanagh, Larry R. Krepski, Babu N. Gaddam
  • CROSSLINKABLE SYRUP SOLUTE COPOLYMERS WITH AMINOALKYL (METH)ACRYLOYL SOLVENT MONOMERS
    Publication number: 20110244231
    Abstract: A pre-adhesive syrup polymer composition is described comprising an acid-functional (meth)acrylate copolymer and an aminoalkyl (meth)acryloyl solvent monomer, which when polymerized, provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 6, 2011
    Inventors: Belma Erdogen-Haug, Maureen A. Kavanagh, Marie Aloshyna ep Lesuffleur, Larry R. Krepski, Babu N. Gaddam
  • CURABLE HYDROPHILIC COMPOSITIONS
    Publication number: 20110245077
    Abstract: A curable composition is described, including a gel material derived from the curable composition, and medical articles including such material, wherein the transparent gel material includes a polymerized monofunctional poly(alkylene oxide) macromonomer component and a surface modified nanoparticle component.
    Type: Application
    Filed: June 16, 2011
    Publication date: October 6, 2011
    Inventors: Kelly S. Anderson, Kevin M. Lewandowski, David J. Plaut, Wendy L. Thompson, Babu N. Gaddam
  • Curable hydrophilic compositions
    Patent number: 7981949
    Abstract: A curable composition is described, including a gel material derived from the curable composition, and medical articles including such material, wherein the transparent gel material includes a polymerized monofunctional poly(alkylene oxide) macromonomer component and a surface modified nanoparticle component.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: July 19, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Kelly S. Anderson, Kevin M. Lewandowski, David J. Plaut, Wendy L. Thompson, Babu N. Gaddam
  • Antimicrobial nanoparticles
    Patent number: 7973096
    Abstract: A polymerizable composition, comprising a first component comprising a cationic nanoparticle comprising a covalently bonded ammonium group, and a second component comprising an anionic polyether compound is described. Either the first component further comprises an ethylenically unsaturated polymerizable group, the second component further comprises an ethylenically unsaturated polymerizable anion, or both. A method of making an article comprising applying the polymerizable composition to a surface of an article is also described.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: July 5, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Kelly S. Anderson, Babu N. Gaddam, Alphonsus V. Pocius, Jeremy M. Yarwood
  • REACTIVE LIQUID MODIFIERS
    Publication number: 20110130518
    Abstract: Epoxy reactive liquid modifiers include acrylate functionalized compounds, acrylamide functionalized compounds, oxalic amide functionalized compounds, actoacetoxy functionalized urethanes and acetoacetoxy functionalized polyalkenes. The reactive liquid modifiers are incorporated into epoxy resin compositions comprising a curable epoxy resin, an amine curing agent, and the reactive liquid modifier, wherein the reactive liquid modifier is polymerized to form at least one of an interpenetrating polymer network and a semi-interpenetrating polymer network with the curable epoxy resin.
    Type: Application
    Filed: July 22, 2009
    Publication date: June 2, 2011
    Inventors: Ilya Gorodisher, Alphonsus V. Pocius, Babu N. Gaddam, Richard G. Hansen