Solid drawing material and method for producing the same

Details Solid drawing material and method for producing the same Solid drawing material and method for producing the same

2007-11-06

2007-11-06

Lorengo, J. A. (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S031080, C106S031100

Reexamination Certificate

active

11044165

ABSTRACT:
Disclosed herein is a first solid drawing material comprising water, a coloring agent, a solidifying agent that is a fatty acid alkali metal salt, and an O/W type emulsion of a separating agent that is an oily material which hardly volatilizes at room temperature. The first solid drawing material preferably contains silicone oil. A second solid drawing material is also disclosed, which comprises an organic solvent, a coloring agent, a solidifying agent that is at least one selected from the group consisting of dibenzylidene sorbitol, tribenylidene sorbitol, and derivatives thereof, a separating agent that is an oily material which hardly volatilizes at room temperature, and a resin soluble in the organic solvent. In these solid drawing materials, the separating agent is evenly dispersed, and therefore they have stable drawing properties and erasability.

REFERENCES:
patent: 5725642 (1998-03-01), Kano et al.
patent: 6033464 (2000-03-01), Craig
patent: 6316526 (2001-11-01), Lugert
patent: 2005/0053633 (2005-03-01), Von Godin et al.
patent: 2005/0197423 (2005-09-01), Fukuo et al.
patent: 2005/0211132 (2005-09-01), Sprogar et al.

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