Patents by Inventor H.C. Silvis

H.C. Silvis 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: 9440196
    Abstract: A method of making a composite membrane comprising the steps of forming a discriminating layer upon a surface of a porous support by sequentially applying immiscible coating solutions upon the support, wherein one coating solution comprises a crosslinking agent and another coating solution comprises a block copolymer, and the block copolymer comprises sacrificial segments and durable segments including reactive pendent groups which react with the crosslinking agent and form a crosslinked matrix comprising micro-domains of the sacrificial segments, and removing at least a portion of the sacrificial segments to yield pores.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: September 13, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: David J. Moll, H. C. Silvis
  • Patent number: 9303156
    Abstract: The invention provides functionalized block composites and crystalline block composites as compatibilizers. In particular, the invention provides compositions of at least three polymers and a compatibilizer. The compatibilizer comprises a functionalized olefin-based polymer formed from at least (A) and (B): (A) a crystalline block composite comprising: a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; a propylene-based crystalline polymer; and, a crystalline ethylene-based polymer; and (B) at least one functionalization agent or a functionalized olefin-based polymer formed from at least (A) and (B): (A) a crystalline block composite comprising: a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; a propylene-based crystalline polymer; and, a crystalline ethylene-based polymer; and (B) at least one functionalization agent.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: April 5, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Ronald J. Weeks, Yushan Hu, Kim L. Walton, Gary R. Marchand, Michael D. Read, H. C. Silvis
  • Publication number: 20140363572
    Abstract: A method of making a composite membrane comprising the steps of forming a discriminating layer upon a surface of a porous support by sequentially applying immiscible coating solutions upon the support, wherein one coating solution comprises a crosslinking agent and another coating solution comprises a block copolymer, and the block copolymer comprises sacrificial segments and durable segments including reactive pendent groups which react with the crosslinking agent and form a crosslinked matrix comprising micro-domains of the sacrificial segments, and removing at least a portion of the sacrificial segments to yield pores.
    Type: Application
    Filed: February 12, 2013
    Publication date: December 11, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: David J. Moll, H. C. Silvis
  • Publication number: 20140343229
    Abstract: The invention provides functionalized block composites and crystalline block composites as compatibilizers. In particular, the invention provides compositions of at least three polymers and a compatibilizer. The compatibilizer comprises a functionalized olefin-based polymer formed from at least (A) and (B): (A) a crystalline block composite comprising: a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; a propylene-based crystalline polymer; and, a crystalline ethylene-based polymer; and (B) at least one functionalization agent or a functionalized olefin-based polymer formed from at least (A) and (B): (A) a crystalline block composite comprising: a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; a propylene-based crystalline polymer; and, a crystalline ethylene-based polymer; and (B) at least one functionalization agent.
    Type: Application
    Filed: December 12, 2012
    Publication date: November 20, 2014
    Applicant: Dow Global Technologies LLC
    Inventors: Ronald J. Weeks, Yushan Hu, Kim L. Walton, Gary R. Marchand, Michael D. Read, H. C. Silvis
  • Publication number: 20140323656
    Abstract: The invention provides functionalized block composites and crystalline block composites. In particular, the invention provides a functionalized olefin-based polymer formed from at least (A) and (B): (A) a crystalline block composite comprising: a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; a propylene-based crystalline polymer; and, a crystalline ethylene-based polymer; and (B) at least one functionalization agent or a functionalized olefin-based polymer formed from at least (A) and (B): (A) a crystalline block composite comprising: a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; a propylene-based crystalline polymer; and, a crystalline ethylene-based polymer; and (B) at least one functionalization agent.
    Type: Application
    Filed: December 12, 2012
    Publication date: October 30, 2014
    Applicant: Dow Global Technologies LLC
    Inventors: Yushan Hu, Kim L. Walton, Gary R. Marchand, Michael D. Read, H. C. Silvis
  • Publication number: 20140178582
    Abstract: A method for making a composite membrane including the formation of a porous discriminating layer upon a surface of a porous support, including the step of a) forming a polymer blend comprising: i) a “blending” polymer and ii) a block copolymer comprising durable segments that form a co-continuous phase with the blending polymer and fugitive segments that form self-assembled assembled micro-domains within the co-continuous phase, and b) removing at least a portion of the fugitive segments to yield pores having an average size of ?0.5 ?m.
    Type: Application
    Filed: July 26, 2012
    Publication date: June 26, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Scott G. Gaynor, Daniel J. Murray, H. C. Silvis, Yasmin N. Srivastava, Junyan Yang
  • Publication number: 20120189910
    Abstract: The present invention is directed to novel block copolymers and to novel polymeric electrolyte compositions, such as solid polymer electrolytes that comprises a block copolymer including a first block having a glass transition temperature greater than about 60° C. or a melting temperature greater than about 60° C., and a second block including a polyalkoxide. The polymer electrolyte composition preferably has a shear modulus, G?, measured at 1 rad/sec and about 30° C. and a conductivity, ?, measured at about 30° C., such that i) G?—? is greater than about 200 (S/cm)(dynes/cm2); and ii) G? is from about 104 to about 1010 dynes/cm2.
    Type: Application
    Filed: February 10, 2010
    Publication date: July 26, 2012
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Douglas A. Brune, Susan J. Babinec, Mark Newsham, H.C. Silvis, Carleton L. Gaupp, Stephanie L. Hughes, Nicole L. Wagner, Andrew G. Talik