Hetero Sulfur Containing Patents (Class 204/157.7)
  • Patent number: 10995082
    Abstract: This invention discloses a novel cationic photoinitiator and a preparation method and use thereof. The cationic photoinitiator has a structure as represented by general formula (I) below. It can match a longer absorption wavelength in the process of application and has an outstanding photosensitive property, and has characteristics of no proneness to migration and good yellowing resistance.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: May 4, 2021
    Assignees: Changzhou Tronly New Electronic Materials Co., Ltd., Changzhou Tronly Advanced Electronic Materials Co., Ltd.
    Inventor: Xiaochun Qian
  • Patent number: 10513567
    Abstract: Disclosed are polycationic polymers. The polycationic polymers can include a plurality of positively charged centers, each of which is formed by condensation of cyclic bis-electrophile (e.g., a 9-thia/aza/selenabicyclo[3.3.1]nonyl electrophile) with a nucleophile. The resulting polycationic polymers can efficiently bind nucleic acids. The polycations can also exhibit properties of cytotoxicity and DNA transfection with interesting structure-activity characteristics.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: December 24, 2019
    Assignee: Georgia Tech Research Corporation
    Inventors: M. G. Finn, Jennifer Marie Beveridge, Allison Frances Geoghan, Zhishuai Geng
  • Patent number: 8192590
    Abstract: Efficient method for preparing sulfonium photoacid generators (PAGs) by microwave-assisted reaction of diarylsufides in the presence of alkylaryliodonium salts. Microwave-assisted synthesis of the PAGs is significantly faster, reducing reaction time with less energy consumption. Reaction times using the microwave-assisted synthesis are in a range of from 90 to 420 faster than conventional thermal conditions. The photoacid quantum yields of several salts prepared by the microwave reaction were measured; the photoacid quantum yields of new sulfonium PAGs were in a range from 0.01 to 0.4 times greater than yields from conventional synthesis. Incorporating a nitro group in the structures of the sulfonium salts increased photoacid quantum yield, induced intersystem crossing and increased the efficiency of photoacid generation compounds.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: June 5, 2012
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Kevin D. Belfield, Ciceron O. Yanez
  • Publication number: 20100233296
    Abstract: The invention concerns a method and a system for producing a signal, in particular an electric signal, or a substance having a coagulating or anticoagulant effect. The method is characterised in that it is based on a source substance with coagulating effect, in particular, Ca++ ions, or an anticoagulant affect, in particular heparin. The method consists in: transforming the electromagnetic field derived from said source substance located in the chamber, into a signal, in particular an electric signal, using a transducer-receiver sensing the electromagnetic field; applying to a receiving substance located in the chamber, in particular water or a water-ethanol mixture or homeopathic granules, said signal derived from said transducer-receiver, using a transducer-transmitter. After said treatment, the receiving substance, initially inactive, has a coagulating or anticoagulant effect.
    Type: Application
    Filed: December 8, 2009
    Publication date: September 16, 2010
    Applicant: DigiBio
    Inventors: Jacques Benveniste, Laurent Benveniste, Didier Guillonnet
  • Publication number: 20100160632
    Abstract: The present invention relates to zinc amide bases of the general formula (I) (R1R2N)2—Zn.aMgX12.bLiX2??(I) wherein R1 and R2 are each independently selected from substituted or unsubstituted, linear or branched alkyl, alkenyl, alkynyl or silyl derivatives thereof, and substituted or unsubstituted aryl or heteroaryl, and wherein R1 and R2 can form together a ring structure, or R1 and/or R2 can be part of a polymer structure; X12 is a divalent anion or two monovalent anions that are independent from each other; X2 is a monovalent anion; a is >0; and b is >0. The zinc amide bases can be used, amongst other things, for deprotonation and metallization of aromatics.
    Type: Application
    Filed: May 14, 2008
    Publication date: June 24, 2010
    Inventors: Paul Knochel, Stefan Wunderlich
  • Publication number: 20100113727
    Abstract: Polymers and copolymers having units derived from unsubstituted or substituted thieno[3,4-b]furan are disclosed. Also provided are methods of making and using the same.
    Type: Application
    Filed: July 11, 2006
    Publication date: May 6, 2010
    Inventor: Gregory A. Sotzing
  • Patent number: 7344662
    Abstract: A reverse synthetic strategy for making organic non-linear optical chromophores involves building up the chromophore from the electron-withdrawing end toward the electron-donating end.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: March 18, 2008
    Assignee: Nitto Denko Corporation
    Inventor: Sheng Li
  • Publication number: 20040026230
    Abstract: The invention describes a method for effecting intramolecular cyclization reactions using light, in the absence of radical initiators, to provide useful polycyclic compounds.
    Type: Application
    Filed: April 23, 2003
    Publication date: February 12, 2004
    Inventors: Roman Davis, Thomas Claiborne Lovelace
  • Patent number: 6551467
    Abstract: The present invention is draw to microwave heating of a transition metal-catalysed organic reaction, in which a catalyst complex between a transition metal and an auxiliary ligand or ligands, the ligand being asymmetric or symmetric, monodentate or bidentate, results in highly chemoselective, regioselective, and stereoselective allylic substitution reactions. Molybdenum or palladium complexes form suitable catalytic systems with a plethora of ligands in a variety of solvents for such microwave facilitated nucleophilic substitution reactions.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: April 22, 2003
    Assignee: Personal Chemistry i Uppsala AB
    Inventors: Ulf Bremberg, Anders Hallberg, Mats Larhed, Christina Moberg, Nils-Fredrik Kaiser