Thermochromic micro particles and thermochromic ink composition, writing apparatus and smart window using the same

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United States of America Patent

PATENT NO 9879147
SERIAL NO

15190090

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Abstract

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The present invention relates to thermochromic micro particles capable of stably implementing a high chromogenic property and a decolorization property and having an improved erasing property, thermal resistance, and chemical resistance, and a thermochromic ink composition, a writing apparatus, and a smart window using the same. The thermochromic micro particles comprise a core part including a phase change material, a dye, and a developer, the phase change material including at least one selected from the group consisting of at least one chain hydrocarbon having a carbon number of 8 or more, a hydrated inorganic salt, alcohol having a carbon number of 3 or more, and polyalkyleneglycol; and a shell layer including a polymer resin.

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Patent Owner(s)

Patent OwnerAddress
DONG-A PENCIL CO LTD4TH FLOOR SAMJUNG BUILDING 273-11 NONHYUN-DONG KANGNAM-KU SEOUL

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kim, Hak Jae Daejeon, KR 16 32

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