Patents by Inventor Bahram Issari

Bahram Issari 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: 10392543
    Abstract: Disclosed is a highly fluorinated silicone resin and a method for making the same. The silicone resin includes M, T, optionally D and optionally Q type monomers and is crosslinkable. The resin has a fluorine content of at least 55 weight percent and a very low refractive index of less than 1.4. The resin is formed in a one step process and requires use of very specific solvents. Preferably the resin includes a first T type monomer having a fluoroalkane group to provide the fluorine to the resin. Preferably the resin includes a second T type monomer having a (meth)acryloyl function to enable cross-linking. The resin forms an effective liquid optically clear adhesive. The resin can be further combined with highly fluorinated (meth)acrylate monomers or perfluoro polyethers to provide even lower refractive indexes and improved adhesive properties.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: August 27, 2019
    Assignee: Henkel IP & Holding GmbH
    Inventors: Bahram Issari, Wenhua Zhang, John G. Woods, Shengqian Kong, Yayun Liu, Jiangbo Ouyang, Li Kang
  • Publication number: 20190169478
    Abstract: Dual-cure compositions for use in high temperature adhesive applications, and particularly for temporarily adhesively attaching one substrate to another substrate, are provided. These dual-cure adhesives are silicone-based compositions that can be B-staged by exposure UV radiation to provide initial green strength, followed by a C-stage cure to give adhesives that can survive high temperature processes above 200° C., especially above 300° C., yet easy to debond afterwards to allow separation of the top and bottom substrates.
    Type: Application
    Filed: June 5, 2018
    Publication date: June 6, 2019
    Inventors: Shengqian KONG, Yayun LIU, Wenhua ZHANG, Stephen HYNES, John G. WOODS, Jiangbo OUYANG, Chunyu SUN, Bahram ISSARI
  • Patent number: 10280349
    Abstract: The present invention relates to one-component UV and thermal curable temporary adhesives for use in high temperature applications, and particularly to adhesives for the temporary attachment of one substrate to another substrate, the adhesives comprising (i) the partial hydrosilylation reaction product of the reaction between the vinyl groups on 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane and the terminal Si—H hydrogens on a silane or siloxane having terminal Si—H hydrogens, and (ii) a photo and/or thermal radical cure initiator. Also encompassed are assemblies including such an adhesive and methods of using the adhesives.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: May 7, 2019
    Assignees: Henkel AG & Co. KGaA, Henkel IP & Holding GmbH
    Inventors: Stephen Hynes, Chunyu Sun, Jiangbo Ouyang, John Gregory Woods, Bahram Issari, Shengqian Kong, Yayun Liu, Wenhua Zhang
  • Publication number: 20190071593
    Abstract: Disclosed is a highly fluorinated silicone resin and a method for making the same. The silicone resin includes M, T, optionally D and optionally Q type monomers and is crosslinkable. The resin has a fluorine content of at least 55 weight percent and a very low refractive index of less than 1.4. The resin is formed in a one step process and requires use of very specific solvents. Preferably the resin includes a first T type monomer having a fluoroalkane group to provide the fluorine to the resin. Preferably the resin includes a second T type monomer having a (meth)acryloyl function to enable cross-linking. The resin forms an effective liquid optically clear adhesive. The resin can be further combined with highly fluorinated (meth)acrylate monomers or perfluoro polyethers to provide even lower refractive indexes and improved adhesive properties.
    Type: Application
    Filed: November 2, 2018
    Publication date: March 7, 2019
    Inventors: Bahram Issari, Wenhua Zhang, John G. Woods, Shengqian Kong, Yayun Liu, Jiangbo Ouyang, Li Kang
  • Publication number: 20180355231
    Abstract: Provided herein are debondable adhesive compositions comprising (A) one or more bis-maleimide (BMI), nadimide or itaconimide oligomer(s), (B) at least one ethylenically unsaturated co-monomer (e.g. co-monomers selected from the group consisting of acrylates, methacrylates, vinyl ethers, vinyl esters, styrenic compounds, allyl compounds, polybutadienes, cinnamates, crotonates, and mixtures of any two or more thereof), and (C) a photoinitiator. In another embodiment, the present invention is directed to an assembly of a substrate and a carrier for the substrate in which the debondable adhesive composition temporarily bonds the substrates, and a method for fabricating the assembly. The debondable adhesive compositions maintain their adhesion at temperatures of 300° C. or greater, are easily and cleanly debondable at ambient conditions, permit temporary bonding at high processing conditions, and do not compromise handling or performance of the substrates.
    Type: Application
    Filed: August 3, 2018
    Publication date: December 13, 2018
    Inventors: Alan E. LITKE, Bahram ISSARI, Laxmisha SRIDHAR
  • Publication number: 20120111498
    Abstract: The present invention relates to two-part moisture curing compositions useful for adhesive, sealing, potting and other applications. In particular, the present invention relates to two-part room temperature vulcanizing (RTV) compositions which include in one of the parts a moisture curing organic polymer which is substantially free or does not contain siloxane bonds in its backbone.
    Type: Application
    Filed: January 18, 2012
    Publication date: May 10, 2012
    Applicant: Henkel Corporation
    Inventors: Christopher Verosky, Michael P. Levandoski, Richard Corrao, Chiu-Sing Lin, Bahram Issari
  • Patent number: 8119746
    Abstract: This application relates to polysiloxane compositions grafted with improved heat curable, moisture curable, or heat/moisture curable groups. In particular, the polysiloxane compositions have reactive groups on the terminal or pendent areas of the siloxane backbone, which once reacted provide improved heat and/or moisture curable polysiloxanes.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: February 21, 2012
    Assignee: Henkel Corporation
    Inventors: Bahram Issari, Michael P. Levandoski, Richard Corrao, Hsien-Kun Chu, Robert P. Cross
  • Patent number: 8119724
    Abstract: The present invention provides moisture curable polyacrylate compositions, which cured elastomers thereof demonstrate improved resistance to shrinkage when exposed to hydrocarbon fluids such as transmission fluids and oil and fuel based fluids. Such compositions include: a) a moisture curable silyl functionalized polyacrylate; and b) at least one hydrocarbon fluid-absorbing component, wherein the hydrocarbon-fluid absorbing component is present in an amount sufficient to reduce shrinkage of the cured composition when exposed to a hydrocarbon fluid.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: February 21, 2012
    Assignee: Henkel Corporation
    Inventors: Chiu-Sing Lin, Thomas Fay-Oy Lim, Bahram Issari
  • Patent number: 7951867
    Abstract: The present invention is directed to silicone formulations which are capable of being rapidly cured to tough elastomeric materials through exposure to UV radiation, and optionally through exposure to moisture as well. The cured products demonstrate high resistance to flammability and combustibility.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: May 31, 2011
    Assignee: Henkel Corporation
    Inventor: Bahram Issari
  • Patent number: 7837824
    Abstract: The present invention relates to photoradiation and/or moisture curing silicone compositions and methods for producing and using the same. In particular, the methods of the present invention permit controlled growth of a polymer, and allow for incorporation of pendant functional groups along the length of the polymer.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: November 23, 2010
    Assignee: Henkel Corporation
    Inventors: Bahram Issari, Lester D. Bennington, Robert Cross, John Kerr, Thomas Fay-Oy Lim, Hsien-Kun Chu, Mathias E. Liistro, Jr., Douglas N. Horner
  • Publication number: 20090143554
    Abstract: This application relates to polysiloxane compositions grafted with improved heat curable, moisture curable, or heat/moisture curable groups. In particular, the polysiloxane compositions have reactive groups on the terminal or pendent areas of the siloxane backbone, which once reacted provide improved heat and/or moisture curable polysiloxanes.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 4, 2009
    Applicant: Henkel Corporation
    Inventors: Bahram Issari, Michael P. Levandoski, Richard Corrao, Hsien-Kun Chu, Robert P. Cross
  • Patent number: 7482391
    Abstract: Room-temperature vulcanized (RTV) foaming compositions are disclosed. The compositions include at least one enoxysilyl functional group and/or at least one alkoxysilyl functional group, at least one amine catalyst, and at least one silicon hydride functional group. Also disclosed are methods of preparing such compositions and methods of using such compositions, methods for making a gasket, and articles of manufacture.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: January 27, 2009
    Assignee: Henkel Corporation
    Inventors: Robert Cross, Lester D. Bennington, Bahram Issari, John Kerr
  • Patent number: 7452937
    Abstract: A room temperature vulcanizing silicone polymer composition including: a) as part of the silicone polymer, a segment including a silicone polymer of Formula (I): b) a finely-divided inorganic filler present in an amount of at least about 25% by weight of the total composition. Enhanced elongation ability is possessed by these compositions.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: November 18, 2008
    Assignee: Henkel Corporation
    Inventors: Robert P. Cross, Thomas Fay-Oy Lim, Hsien-Kun Chu, Mathias E. Liistro, Jr., Alfred A. DeCato, Debora E. Duch, Bahram Issari
  • Publication number: 20080105374
    Abstract: The present invention relates to photoradiation and/or moisture curing silicone compositions and methods for producing and using the same. In particular, the methods of the present invention permit controlled growth of a polymer, and allow for incorporation of pendant functional groups along the length of the polymer.
    Type: Application
    Filed: January 18, 2006
    Publication date: May 8, 2008
    Applicant: HENKEL CORPORATION
    Inventors: Bahram Issari, Lester D. Bennington, Robert Cross, John Kerr, Thomas Fay-Oy Lim, Hsien-Kun Chu, Matthias E. Liistro, Douglas N. Horner
  • Publication number: 20080096996
    Abstract: The present invention is directed to silicone formulations which are capable of being rapidly cured to tough elastomeric materials through exposure to UV radiation, and optionally through exposure to moisture as well. The cured products demonstrate high resistance to flammability and combustibility.
    Type: Application
    Filed: December 18, 2007
    Publication date: April 24, 2008
    Applicant: Henkel Corporation
    Inventor: Bahram Issari
  • Publication number: 20080064815
    Abstract: The present invention relates to curable compositions which contain acrylate monomers as liquid filler materials, which when cured, phase separate from the matrix in which they are present and serve as reinforcement materials. The curable compositions possess improved physical properties.
    Type: Application
    Filed: September 12, 2006
    Publication date: March 13, 2008
    Inventors: Bahram Issari, Michael Levandoski, Richard Corrao
  • Patent number: 7309732
    Abstract: The present invention is directed to silicone formulations which are capable of being rapidly cured to tough elastomeric materials through exposure to UV radiation, and optionally through exposure to moisture as well. The cured products demonstrate high resistance to flammability and combustibility.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: December 18, 2007
    Assignee: Henkel Corporation
    Inventor: Bahram Issari
  • Patent number: 7230047
    Abstract: The present invention relates to curable elastomer compositions and deformable thermoplastic compositions which are reshapable subsequent to cure or solidification. In particular, the present invention relates to compositions and articles of manufacture which are prepared from curable elastomeric or deformable thermoplastic matrices having distributed therein polymeric powders which have a melting point below the degradation of the matrix and which are present in shape-holding amounts to permit reshaping subsequent to elastomer cure.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: June 12, 2007
    Assignee: Henkel Corporation
    Inventor: Bahram Issari
  • Publication number: 20070123640
    Abstract: A room temperature vulcanizing silicone polymer composition including: a) as part of the silicone polymer, a segment including a silicone polymer of Formula (I): b) a finely-divided inorganic filler present in an amount of at least about 25% by weight of the total composition. Enhanced elongation ability is possessed by these compositions.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 31, 2007
    Inventors: Robert Cross, Thomas Lim, Hsien-Kun Chu, Mathias Liistro, Alfred DeCato, Debora Duch, Bahram Issari
  • Patent number: 6838182
    Abstract: Heat-curable silicone compositions employing a reactive silicone, a silicone hydride crosslinker and a catalyst system which includes a rhodium-based catalyst, a stabilizing system are disclosed. A combination of rhodium and platinum-based catalysts are employed as well. The compositions are low temperature curing and are capable of providing low coefficient of thermal expansion compositions. A stabilizer system which includes in combination a peroxide and an acetylenic compound is also disclosed.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: January 4, 2005
    Assignee: Henkel Corporation
    Inventors: Philip L. Kropp, Lester D. Bennington, Robert P. Cross, Bahram Issari