ApplicationNo. 005974 filed on 01/19/1993
US Classes:524/377, Two or more OH groups106/31.64, Erasable, purified, correctable, fugitive, indicator, conductive, fluorescent, chromogenic, or magnetic composition106/31.73, Rosin or derivative containing106/31.74, Shellac or derivative containing106/31.86, Organic oxygen compound containing523/161, Invisible, ballpoint, or typewriter ink compositions or process of preparing; or composition for correction ribbons or correction fluids or process of preparing524/376OH group, e.g., ether-alcohol solvent, etc.
ExaminersPrimary: Lieberman, Paul
Assistant: Einsmann, Margaret
Attorney, Agent or Firm
Foreign Patent References
International ClassC09D 011/16
Foreign Application Priority Data1992-01-17 JP
AbstractAn erasable ink composition for writing on an impervious writing surface comprising an organic solvent, a resin, a pigment, and a separating agent which comprises:(a) a polyoxyethylene polyoxypropylene block copolymer, as a first separating agent, which is liquid at normal temperatures in an amount of 5-20% by weight, and(b) at least one organic compound selected from the group consisting of a carboxylic acid ester, a polyoxypropylene monoalkyl ether and a polyoxyethylene polyoxypropylene monoalkyl ether, as a second separating agent, which is liquid at normal temperatures in an amount of 2-10% by weight.
Field of SearchInvisible, ballpoint, or typewriter ink compositions or process of preparing; or composition for correction ribbons or correction fluids or process of preparing
Solid block or solid block-type copolymer with other solid polymer, SICP or SPFI
OH group, e.g., ether-alcohol solvent, etc.
Two or more OH groups