Erasable ball-point pen ink

Details Erasable ball-point pen ink Erasable ball-point pen ink

1983-10-31

1987-08-18

Yarbrough, Amelia B.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

106 20, 106 22, 106 23, 106308Q, C09D 1118

Patent

active

046877916

ABSTRACT:
An erasable ball-point pen ink is disclosed. The ink is comprised of a rubber component, a volatile solvent, a pigment and a nonvolatile solvent, which additionally contains finely divided powders of an inorganic compound which is inactive to other ink components contained therein; a semisolid substance; a soft solid substance having a melting point of not more than 130.degree. C.; a combination of finely divided powders of an inorganic compound inactive to other ink compositions contained therein and a semisolid substance; or a combination of finely divided powders of an inorganic compound inactive to other ink composition contained therein and a soft solid substance having a melting point not higher than 130.degree. C. The ink can be used in a ball-point pen to make it possible to write fine letters and is capable of maintaining highly stable ink traces over long distances compared with presently available ball-point pen inks. The traces produced are even and show good intensity. Further, the ink does not produce substantial wear of ball holder with respect to the pen components. In addition to the excellent writing performances of the disclosed ink it retains the same or better erasability than erasable inks presently available in the market.

REFERENCES:
patent: 4097290 (1978-06-01), Muller et al.
patent: 4329262 (1982-05-01), Muller
patent: 4329264 (1982-05-01), Muller
patent: 4337183 (1982-06-01), Santiago

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