Initially erasable ball pen ink

Details Initially erasable ball pen ink Initially erasable ball pen ink

1987-04-21

1988-04-19

Yarbrough, Amelia

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106 32, 523161, 524505, C09D 1118

Patent

active

047387254

ABSTRACT:
A ball pen ink of transiently erasable type to be dispensed from a pressurized ball pen incorporates an elastommeric polymer, pigment and a mixed solvent system. The mixed solvent system includes a volatile solvent component, a non-volatile solvent component and a non-volatile solvent/plasticizer component in such relative amounts and with relation to the elastomer and pigment combination as achieves a balance between ink viscosity and thixotropy to provide good writing qualities.

REFERENCES:
patent: 3875105 (1975-04-01), Daugherty et al.
patent: 4097290 (1978-06-01), Muller et al.
patent: 4329262 (1982-05-01), Muller
patent: 4329264 (1982-05-01), Muller
patent: 4390646 (1983-06-01), Ferguson

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