Polymer From At Least One Nonethylenic Monomer Having Cationic Group Patents (Class 525/917)
  • Patent number: 8361495
    Abstract: Biodegradable cationic block copolymers are disclosed, comprising a hydrophilic block comprising first repeat units derived from a first cyclic carbonyl monomer by ring-opening polymerization, wherein more than 0% of the first repeat units comprise a side chain moiety comprising a quaternary amine group; a hydrophobic block comprising second repeat units derived from a second cyclic carbonyl monomer by ring-opening polymerization; an optional endcap group; and a chain fragment derived from an initiator for the ring opening polymerization. The cationic block copolymers form aqueous micelle mixtures suitable for antimicrobial applications.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: January 29, 2013
    Assignees: International Business Machines Corporation, Agency For Science, Technology And Research
    Inventors: James Lupton Hedrick, Kazuki Fukushima, Yi Yan Yang
  • Patent number: 8318207
    Abstract: In accordance with certain embodiments of the present disclosure, a method for intracellular delivery of small molecules is provided. The method includes encapsulation of small molecules in a thermally responsive nanocapsule by decreasing the temperature of the nanocapsule to increase the permeability of the nanocapsule and allowing the small molecules to be suck into or diffuse into the nanocapsule. The nanocapsule is delivered into a cell by increasing the temperature of the nanocapsule. The small molecules are released from the nanocapsule into the cell in a controllable manner by cooling and heating treatments.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: November 27, 2012
    Assignee: University of South Carolina
    Inventor: Xiaoming He
  • Patent number: 8076390
    Abstract: The present invention provides a composition for use as an antifouling agent and a method of decreasing fouling of a surface in a marine environment. The composition is a polymeric matrix, the polymeric matrix comprising subunits of at least one structural monomer and at least one ionic monomer. The ionic monomer comprising a salt, that is an anion that is a conjugate base of an acid having a pKa less than about 9 and at least one cation that is a cationic biocide. One embodiment includes guanidinium counterions that undergo ion exchange to slowly release a biocidal component.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: December 13, 2011
    Assignee: UVIC Industry Partnerships Inc.
    Inventor: Thomas M. Fyles
  • Patent number: 4808637
    Abstract: The present invention provides an acrylate superabsorbent composition having an improved rate of absorbency, low residual acid content, and a low acrylate monomer content. Acrylic acid, an alkali metal salt of carbonic acid, aluminum acetate, sodium sulfate and water are uniformly reacted preferably using microwave radiation as the heat source.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: February 28, 1989
    Assignee: Johnson & Johnson Patient Care, Inc.
    Inventors: Franklin Boardman, John M. Lesniak
  • Patent number: 4299747
    Abstract: Coating compositions which may be applied by conventional techniques as well as by electrodeposition are provided by reacting a polyglycidyl ether of a polyphenol with an amino acid containing at least one amine group and one carboxyl group, wherein the amine group of the acid is preferentially reactive with the epoxy groups of the polyglycidyl ether. The resultant product can then be solubilized by neutralizing at least a portion of the acid functionality thereof with an amine or other base. Especially useful amino acids are the aminobenzoic acids.
    Type: Grant
    Filed: March 8, 1977
    Date of Patent: November 10, 1981
    Assignee: PPG Industries, Inc.
    Inventor: William J. Birkmeyer