Writing instrument

Details Writing instrument Writing instrument

1994-01-11

1995-05-23

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 19A, 106210, 106 22B, C09D 1116

Patent

active

054177480

ABSTRACT:
A writing instrument contains, in its own container, a color ink agent mixing at least one electron donative coloring compound and one electron acceptive developing compound. The electron donative coloring compound is selected from a group composed of crystal violet lactone; malachite green lactone; 1,3-dimethyl-6-diethylaminofluoran 6-diethylamino-benzo[.alpha.]-fluoran; 3-cyclohexyl methylamino-6-methyl-7-anilinofluoran; benzoyl leucomethylene blue; ethyl leucomethylene blue; methoxybenzoyl leucomethylene blue; 2-(phenylimino ethanedilidene)-3,3-trimethyl-indoline; 1,3,3-trimethyl-indolino-7'-chloro-.beta.-naphthospiropyran; di-.beta.-naphthospiropyran; N-acetylauramlne; N-phenylauramine; and rhodamine B lactam. The electron acceptive developing compound is selected from a group composed of zinc salicylate and bisphenol A.

REFERENCES:
patent: 4097288 (1978-06-01), Lawton
patent: 4557618 (1985-12-01), Iwata et al.
patent: 4907903 (1990-03-01), Kawashima
patent: 5057154 (1991-10-01), Kusakata et al.
WPI 90-020141, Derwent Publications Ltd, GB; & JP-A-1301366 (Fuji Photo Film) May 12, 1989 Thermal Record Material Comprise Substrate Record Layer Contain Zeolite Water.

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