Patents by Inventor Charles M. Leir

Charles M. Leir 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: 7179923
    Abstract: Compounds having two reactive functional groups are described that can be used to provide a connector group between a substrate and an amine-containing material. The first reactive functional group can be used to provide attachment to a surface of a substrate. The second reactive functional group is a N-sulfonylaminocarbonyl group that can be reacted with an amine-containing material, particularly a primary aliphatic amine, to form a carbonylimino-containing connector group. The invention also provides articles and methods for immobilizing amine-containing materials to a substrate.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: February 20, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Karl E. Benson, Moses M. David, Cary A. Kipke, Brinda B. Lakshmi, Charles M. Leir, George G. I. Moore, Rahul R. Shah
  • Patent number: 7169933
    Abstract: Compounds having two reactive functional groups are described that can be used to provide a connector group between a substrate and an amine-containing material. The first reactive functional group can be used to provide attachment to a surface of a substrate. The second reactive functional group is a N-sulfonylaminocarbonyl group that can be reacted with an amine-containing material, particularly a primary aliphatic amine, to form a carbonylimino-containing connector group. The invention also provides articles and methods for immobilizing amine-containing materials to a substrate.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: January 30, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Karl E. Benson, Moses M. David, Cary A. Kipke, Brinda B. Lakshmi, Charles M. Leir, George G. Moore, Rahul Shah
  • Patent number: 6958154
    Abstract: The present invention provides novel “patch in a bottle” technology in which a fluid composition, e.g., an aerosol spray, is applied onto a surface as a fluid, but then dries to form a covering element, such as a patch, having a tack free outer surface covering an underlying adhesive that helps adhere the patch to the substrate. The fluid compositions have a unique chemical formulation that allows such composite patches to form in situ. Specifically, the fluid compositions include a tacky component, such as an adhesive, and a film-forming, non-tacky component. The non-tacky and tacky components are selected to be immiscible with each other so that the components undergo phase separation as the fluid composition dries.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: October 25, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Patricia J. Andolino Brandt, Charles M. Leir, David J. Wirtanen
  • Patent number: 6824820
    Abstract: An adhesive composition comprising a silicone free polyurea-based polymer, comprising a segmented copolymer, wherein the copolymer comprises repeating units of Formula I: wherein: each B is independently a polyvalent radical selected form a group consisting of arylene, aralkylene, cycloalkylene, polyoxyalkylene, or mixtures thereof; each D is independently selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a phenyl group, a group that completes a ring structure that includes B to form a heterocycle, and mixtures thereof; each Z is independently a polyvalent radical having about 1 to about 20 carbon atoms; each Y is independently a polyoxyalkylene; m is an integer greater than zero; and a is zero or an integer greater than zero; and wherein the composition comprises a tackifier in an amount sufficient to provide the adhesive composition as a pressure sensitive adhesive and in an amount less than about 45 parts by weight tackifier per hundred part by we
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: November 30, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: David J. Kinning, Charles M. Leir, Audrey A. Sherman, Meherdil D. Dastur
  • Publication number: 20040013629
    Abstract: The present invention provides novel “patch in a bottle” technology in which a fluid composition, e.g., an aerosol spray, is applied onto a surface as a fluid, but then dries to form a covering element, such as a patch, having a tack free outer surface covering an underlying adhesive that helps adhere the patch to the substrate. The fluid compositions have a unique chemical formulation that allows such composite patches to form in situ. Specifically, the fluid compositions include a tacky component, such as an adhesive, and a film-forming, non-tacky component. The non-tacky and tacky components are selected to be immiscible with each other so that the components undergo phase separation as the fluid composition dries.
    Type: Application
    Filed: July 14, 2003
    Publication date: January 22, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Patricia J. Andolino Brandt, Charles M. Leir, David J. Wirtanen
  • Patent number: 6652970
    Abstract: The present invention is directed toward compositions that are chemically different after application to a substrate as compared to the composition prior to its application. A method of the invention comprises a method of transitioning a crosslinked polymer composition from a first chemical state to a second chemical state. Advantageously, compositions of the invention are relatively stable after transformation to their altered, or second, chemical state.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: November 25, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Albert I. Everaerts, Charles M. Leir, Roger A. Mader, Peter A. Stark
  • Patent number: 6627216
    Abstract: The present invention provides novel “patch in a bottle” technology in which a fluid composition, e.g., an aerosol spray, is applied onto a surface as a fluid, but then dries to form a covering element, such as a patch, having a tack free outer surface covering an underlying adhesive that helps adhere the patch to the substrate. The fluid compositions have a unique chemical formulation that allows such composite patches to form in situ. Specifically, the fluid compositions include a tacky component, such as an adhesive, and a film-forming, non-tacky component. The non-tacky and tacky components are selected to be immiscible with each other so that the components undergo phase separation as the fluid composition dries.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: September 30, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Patricia J. Andolino Brandt, Charles M. Leir, David J. Wirtanen
  • Patent number: 6518360
    Abstract: An essentially solventless process for preparing a hot melt-processable release material comprises the step of providing reactants to a reactor, wherein the reactants comprise at least one backbone polymer having a grafting site that is reactive with a release component to selectively form a release moiety substituent at the grafting site; and a release component that is reactive with the grafting site. The release component is used in an effective amount for imparting release properties to the resulting release material. Also disclosed are release materials preparable thereby and coated substrates comprising the release material. Advantageously, release materials of the present invention are preparable and coatable using a single extruder.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: February 11, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Ronald W. Ausen, Kevin T. Grove, Charles M. Leir, Audrey A. Sherman, Walter R. Romanko
  • Patent number: 6441118
    Abstract: The present invention provides polydiorganosiloxane oligourea segmented copolymers. The copolymers contain soft polydiorganosiloxane units, hard segments that are diisocyanate residues, the polydiorganosiloxane units and diisocyanate residues being connected by urea linkages, and terminal groups that are non-reactive, reactive under free radical or moisture cure conditions, or amines. The invention also provides methods of preparing the copolymers.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: August 27, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Audrey A. Sherman, Walter R. Romanko, Albert I. Everaerts, Charles M. Leir, Mieczyslaw H. Mazurek, Constance J. Nelson
  • Publication number: 20010037008
    Abstract: The present invention provides polydiorganosiloxane oligourea segmented copolymers. The copolymers contain soft polydiorganosiloxane units, hard segments that are diisocyanate residues, the polydiorganosiloxane units and diisocyanate residues being connected by urea linkages, and terminal groups that are nonreactive, reactive under free radical or moisture cure conditions, or amines. The invention also provides methods of preparing the copolymers.
    Type: Application
    Filed: September 26, 1997
    Publication date: November 1, 2001
    Inventors: AUDREY A SHERMAN, WALTER R. ROMANKO, ALBERT I. EVERAERTS, CHARLES M. LEIR, MIECZYSLAW H. MAZUREK, CONSTANCE J. NELSON
  • Publication number: 20010019721
    Abstract: The present invention provides novel “patch in a bottle” technology in which a fluid composition, e.g., an aerosol spray, is applied onto a surface as a fluid, but then dries to form a covering element, such as a patch, having a tack free outer surface covering an underlying adhesive that helps adhere the patch to the substrate. The fluid compositions have a unique chemical formulation that allows such composite patches to form in situ. Specifically, the fluid compositions include a tacky component, such as an adhesive, and a film-forming, non-tacky component. The non-tacky and tacky components are selected to be immiscible with each other so that the components undergo phase separation as the fluid composition dries.
    Type: Application
    Filed: February 15, 2001
    Publication date: September 6, 2001
    Inventors: Patricia J. Andolino Brandt, Charles M. Leir, David J. Wirtanen
  • Patent number: 6204350
    Abstract: Cure-on-demand, moisture-curable compositions of one or more compounds comprising molecules having reactive silane functional groups and an acid generating material are taught herein. The acid generating material releases an acid upon exposure to heat, ultraviolet light, visible light, electron beam irradiation or microwave irradiation to initiate and accelerate the crosslinking reaction. Articles prepared using the moisture curable materials are also disclosed, as are methods of curing those materials.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: March 20, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Junkang Jacob Liu, Charles M. Leir, George G. I. Moore, Audrey A. Sherman, Albert I. Everaerts, Marie A. Boulos
  • Patent number: 6146756
    Abstract: An essentially solventless process for preparing a hot melt-processable release material comprises the step of providing reactants to a reactor, wherein the reactants comprise at least one backbone polymer having a grafting site that is reactive with a release component to selectively form a release moiety substituent at the grafting site; and a release component that is reactive with the grafting site. The release component is used in an effective amount for imparting release properties to the resulting release material. Also disclosed are release materials preparable thereby and coated substrates comprising the release material. Advantageously, release materials of the present invention are preparable and coatable using a single extruder.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: November 14, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Ronald W. Ausen, Kevin T. Grove, Charles M. Leir, Audrey A. Sherman, Walter R. Romanko
  • Patent number: 6143919
    Abstract: Polymerizable urethane acid compounds are provided. Preferred compounds additionally comprise a hydroxy functionality. These compounds are made by reaction of hydroxy functional acid compounds with isocyanates.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: November 7, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Byron Ciping Shen, Charles M. Leir, Amy M. DeVries
  • Patent number: 5792554
    Abstract: Diblock (B-A) and triblock (B-A-B) polydiorganosiloxane-polyurea block copolymers comprise non-functional polydiorganosiloxane endblock B and polyurea block A. When used to provide release coatings, the block copolymers allow for easier release compared to traditional block copolymers of the (AB).sub.n type having comparable amounts of polydiorganosiloxane. Articles incorporating the copolymers as a release material are also disclosed.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: August 11, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles M. Leir, William R. Bronn, Patricia J. A. Brandt
  • Patent number: 5753346
    Abstract: The invention provides a radiation curable release coating composition comprising:(a) about 1 to about 50 percent by weight of a cationically reactive polydiorganosiloxane liquid rubber having the following formula: ##STR1## wherein R are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl wherein at least about 50% of the total number of silicon atoms have two methyl groups bonded thereto;E is an organic monovalent functional group comprising from about 1 to about 20 carbon atoms having at least one cationically co-reactive functional group;a and b both represent integers, wherein the sum of a plus b is an integer of about 10 to about 1200;b has a value ranging from about 0 to about 0.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: May 19, 1998
    Assignee: Minnesota Mining & Manufacturing Company
    Inventors: Charles M. Leir, William R. Berggren, William R. Bronn, David J. Kinning, Olester Benson, Jr.
  • Patent number: 5670598
    Abstract: Diblock (B-A) and triblock (B-A-B) polydiorganosiloxane-polyurea block copolymers comprise non-functional polydiorganosiloxane endblock B and polyurea block A. When used to provide release coatings, the block copolymers allow for easier release compared to traditional block copolymers of the (AB).sub.n type having comparable amounts of polydiorganosiloxane. Articles incorporating the copolymers as a release material are also disclosed.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: September 23, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles M. Leir, William R. Bronn, Patricia J. A. Brandt
  • Patent number: 5576356
    Abstract: The invention provides a radiation curable release coating composition comprising:(a) about 1 to about 50 percent by weight of a cationically reactive polydiorganosiloxane liquid rubber having the following formula: ##STR1## wherein R are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl wherein at least about 50% of the total number of silicon atoms have two methyl groups bonded thereto;E is an organic monovalent functional group comprising from about 1 to about 20 carbon atoms having at least one cationically co-reactive functional group;a and b both represent integers, wherein the sum of a plus b is an integer of about 10 to about 1200;b has a value ranging from about 0 to about 0.
    Type: Grant
    Filed: November 2, 1994
    Date of Patent: November 19, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles M. Leir, William R. Berggren, William R. Bronn, David J. Kinning, Olester Benson, Jr.
  • Patent number: 5512650
    Abstract: Block copolymers having a repeating unit comprised of polysiloxane and urea segments are prepared by copolymerizing certain diaminopolysiloxanes with diisocyanates. The invention also provides novel diaminopolysiloxanes useful as precursors in the preparation of the block copolymers and methods of making such diaminopolysiloxanes. Pressure sensitive adhesive compositions comprising the block copolymer are also provided as are sheet materials coated with the same.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: April 30, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles M. Leir, Jerome J. Hoffman, Leonard A. Tushaus, Gary T. Wiederholt, Mjeczyslaw H. Mazurek, Audrey A. Sherman, William R. Bronn
  • Patent number: 5475124
    Abstract: A composition which is curable to an elastomer comprising:A polymer or mixture of polymers of the formula ##STR1## A composition which is curable to a pressure sensitive adhesive comprising the above polymer and a sufficient amount of tackifier. The invention also relates to fluorosilane compounds useful in the preparation of silicone macromonomer, their preparation and the preparation of silicone macromonomer.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: December 12, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mieczyslaw H. Mazurek, Steven S. Kantner, Charles M. Leir, Audrey A. Sherman