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Inks containing block copolymer micelles

  • US 5,145,518 A
  • Filed: 05/30/1991
  • Issued: 09/08/1992
  • Est. Priority Date: 06/27/1990
  • Status: Expired due to Term
First Claim
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1. An ink composition which comprises an aqueous liquid vehicle and particles of an average diameter of 100 nanometers or less which comprise micelles of block copolymers of the formula ABA, wherein A represents a hydrophilic segment and B represents a hydrophobic segment, and wherein dye molecules are convalently attached to the micelles, said dye molecules being detectable when exposed to radiation outside the visible wavelength range, wherein the A segments exhibit a solubility in water of at least about 0.2 gram per milliliter and the B segment exhibits a solubility in water of no more than about 0.01 gram per milliliter.

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