Claims
- 1. In an aqueous ball point ink composition comprising
- (i) a colorant selected from the group consisting of (a) a pigment and a dispersant (b) a precolored emulsion resin and (c) a mixture of (a) and (b);
- (ii) a water-soluble organic solvent;
- (iii) a pseudoplastic imparting agent; and
- (iv) water;
- the improvement wherein the composition further comprises
- a cross-linked polyacrylate salt having a number average molecular weight ranging from about 2,000,000 to 6,000,000, as a free acid, in an amount of about 0.05-0.5% by weight based on the weight of said colorant, solvent, pseudoplastic imparting agent and water.
- 2. The aqueous ball point ink composition according to claim 1 wherein said composition has a viscosity of about 2,000 to 8,000 cps at 20.degree. C.
- 3. The aqueous ball point ink composition according to claim 1 wherein said pseudoplastic imparting agent comprises Welan gum and/or Xanthan gum.
- 4. The aqueous ball point ink composition according to claim 1 wherein said aqueous ball point ink composition further comprises antiseptic.
- 5. The aqueous ball point ink composition according to claim 4 wherein said antiseptic comprises 1,2-benzisothiazoline-3-on.
- 6. A ball point pen comprises an ink storage vessel filled an aqueous ball point ink composition according to claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-116898 |
May 1994 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/445,944 filed May 22, 1995 now abandoned.
US Referenced Citations (3)
Continuations (1)
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Number |
Date |
Country |
Parent |
445944 |
May 1995 |
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