Resins and polymer mixtures thereof
Stabilized emulsion inks
Ball-point instruments writing with improved transitorially erasable trace and ink compositions therefor
Sealant based on mixture of unsaturated and hydrogenated block copolymers
Sealant based on thermoplastic elastomer and mixed modifying resins
Suede-look shoe soles
ApplicationNo. 06/318307 filed on 11/05/1981
US Classes:523/161, Invisible, ballpoint, or typewriter ink compositions or process of preparing; or composition for correction ribbons or correction fluids or process of preparing524/505, Solid block or solid block-type copolymer with other solid polymer, SICP or SPFI525/89, Mixture contains two or more solid block or block-type copolymers525/901, RADIAL BLOCK525/95, Mixture contains solid block or block-type copolymer derived from ethylenically unsaturated hydrocarbon reactants only at least one of which contains at least four carbon atoms525/96, With solid polymer derived from reactant containing an atom other than C, H or chalcogen525/98, Solid block or block-type copolymer derived from reactant containing plural unsaturation525/99With solid polymer derived from reactant containing plural unsaturation
ExaminersPrimary: Bleutge, John C.
Assistant: Lilling, Herbert J.
Attorney, Agent or Firm
International ClassesC09D 153/00 (20060101)
C09D 11/18 (20060101)
C09D 153/02 (20060101)
AbstractAn erasable ink containing a thermoplastic block copolymer, pigment particles, and a solvent. In a preferred embodiment, an erasable ink requiring little or no pressurization is provided by employing a mixture of radial and linear block copolymers and a mixed solvent system falling within a specific range of solubility parameter. Polybutene and poly-alpha-methylstyrene are preferred additives to decrease smearing tendency.