Compositions: coating or plastic – Coating or plastic compositions – Marking
Patent
1984-11-06
1986-08-19
Yarbrough, Amelia B.
Compositions: coating or plastic
Coating or plastic compositions
Marking
106308M, 523161, 524496, 524570, 524571, 524574, C09D 1108
Patent
active
046067698
ABSTRACT:
An erasable black ink composition for use in ball-point pens is disclosed. The composition comprises rubber, a low boiling solvent, a black pigment, a quality adjuster and a lubricant, wherein the content of the rubber is 18.9 to 20% by weight of the composition, the ratio by weight of the low boiling solvent to the rubber is in the range of 1.56:1 to 1.64:1, the ratio by weight of the pigment to the rubber is in the range of 0.8:1 to 0.9:1, and the ratio by weight of the quality adjuster to the pigment is in the range of 1.7:1 to 1.8:1. Traces of the ink can be erased by a rubber eraser within an initial period of time.
REFERENCES:
patent: 4097290 (1978-06-01), Muller et al.
Hirano Katsumi
Honda Kazuhiko
Saitoh Nobuto
Sato Hiroshi
Tanaka Noriatsu
Pilot Man-Nen-Hitsu Kabushiki Kaisha
Yarbrough Amelia B.
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