Patents Represented by Law Firm Roylance, Abrams, Berdu & Kaul
  • Solvent composition for use in carbonless copy systems
    Patent number: 4071469
    Abstract: A solvent composition for use in carbonless copy systems consisting essentially of a combination of a mono-alkyl naphthalene, wherein said alkyl group contains from 1 to 3 carbon atoms per molecule and a di-alkyl naphthalene, wherein each of said alkyl groups in said di-alkyl naphthalene contains from 2 to 4 carbon atoms per molecule. The solvent is used in the production of microcapsules wherein an isocyanate cross-linking agent is dissolved in the solvent.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: January 31, 1978
    Assignee: Champion International Corporation
    Inventors: David N. Vincent, Cheng Hsiung Chang