Patents Represented by Attorney Sue Ellen Phillips
  • Patent number: 5387279
    Abstract: The subject invention relates to an improved lithographic dampening solution comprising a diluted dampening solution concentrate having mixed therein a micro-emulsion formulation which spontaneously emulsifies upon mixing with the diluted dampening solution concentrate, the micro-emulsion formulation comprising a mono-, di-, or tripropylene glycol or other glycol having at least 3 carbons; a partially water soluble mono-, di-, or tripropylene glycol C.sub.1 to C.sub.6 alkyl ether; and, a wholly or partially water soluble polymer having an acid value of from about 5 to about 50. The subject invention further relates to a micro-emulsion formulation as previously stated or as stated hereinabove which further contains a nonionic surfactant of HLB 2-10 and a water soluble thickener. The invention further relates to a method for preparing the above-defined improved lithographic dampening solution.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: February 7, 1995
    Assignee: Varn Products Company, Inc.
    Inventors: Ronald S. Conti, Donatas Ramanauskas, Terry L. Dwyer