Ink composition for writing instruments

Details Ink composition for writing instruments Ink composition for writing instruments

1983-09-28

1985-04-09

Lieberman, Paul

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 25, 106 24, 106308Q, C09D 1100

Patent

active

045099820

ABSTRACT:
An aqueous ink composition useful as a writing ink, including a water-insoluble coloring agent, and a water-soluble polymeric material having a molecular weight of at least about 1.times.10.sup.5. Preferably, the polymeric material is a polyethylene oxide or an alginic acid derivative. Ink images drawn on paper using the ink composition may be easily erased by rubbing with a rubber eraser.

REFERENCES:
patent: 2265055 (1941-12-01), Biro
patent: 3533811 (1970-10-01), Clements et al.
patent: 3802896 (1974-04-01), Westall et al.
patent: 3884707 (1975-05-01), Dick et al.
patent: 4180407 (1979-12-01), Gibson et al.

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