Colored liquid composition for editing pen

Details Colored liquid composition for editing pen Colored liquid composition for editing pen

2006-10-10

2006-10-10

Lorengo, J. A. (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S031860, C106S031320, C106S031640, C106S031410

Reexamination Certificate

active

07118618

ABSTRACT:
The colored liquid composition of the invention for a highlighter comprises a coloring element and water, the water content by weight lies in the range 10% to 30%. In addition, it comprises at least 40% of a liquid component having surface tension greater than 40 mN/m. In a variant, the coloring element is a tracer solvent having a fluorescent appearance under basic pH, in particular hydroxypyrenetrisulfonic acid, the pH of the composition lying in the range 8 to 9, and the component having surface tension greater than 40 mN/m is triethanolamine. Under such circumstances, the composition contains an acid to neutralize the triethanolamine in part in order to obtain the basic pH, for example hydrochloric acid.

REFERENCES:
patent: 5174814 (1992-12-01), Burwell et al.
patent: 5232494 (1993-08-01), Miller
patent: 5441561 (1995-08-01), Chujo et al.
patent: 5498282 (1996-03-01), Miller et al.
patent: 5865883 (1999-02-01), Teraoka et al.
patent: 0 464 304 (1992-01-01), None
patent: 2 476 668 (1981-08-01), None
Machine Translation of JP 06-073324,3-1994.
Written Opinion (English-language) for PCT/FR01/04131 (corresponding to Written Opinion (French-language) for PCT/FR01/04131 filed on Jun. 20, 2003).

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