Patents Examined by Marc L. Bell
  • Carbonylation catalyst supported on a carbonized polysulfonated divinylbenzene-styrene copolymer
    Patent number: 6235673
    Abstract: A catalyst in carbonylation processes for producing esters, carboxylic acids, and carboxylic acid anhydrides from lower alkyl alcohols, ethers, esters, alcohol producing derivatives. The catalyst includes a catalytically active metal selected from Group VIII metals, tin mixtures thereof associated with a carbonized polysulfonated divinylbenzene-styrene copolymer.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: May 22, 2001
    Assignee: Eastman Chemical Company
    Inventors: Joseph Robert Zoeller, Andy Hugh Singleton, Gerald Charles Tustin, Donald Lee Carver