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Sulfur-containing penetrants for ink jet inks

  • US 5,169,436 A
  • Filed: 05/13/1992
  • Issued: 12/08/1992
  • Est. Priority Date: 05/13/1992
  • Status: Expired due to Term
First Claim
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1. An aqueous ink jet ink composition comprising:

  • (a) an aqueous carrier medium,(b) a colorant; and

    (c) a sulfoxide or sulfone penetrant having a solubility in water of at least 4.5% at 25°

    C., and which is represented by the formula;

    
    
    space="preserve" listing-type="equation">H(CH.sub.2).sub.a S(O).sub.n (CH.sub.2).sub.b H wherein a+b=5-8, and n=1-2.

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