AQUEOUS INK COMPOSITION FOR WRITING TOOLS

World Intellectual Property Organization Patent

APP PUB NO WO-2015072344-A1
SERIAL NO

PCTJP2014078944

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Abstract

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Provided is an aqueous ink composition for writing tools, which contains an oxidized cellulose and does not undergo the non-uniformity of viscosity distribution (i.e., fluctuations in viscosity) over time and therefore has excellent long-term viscosity distribution stability.One example of the aqueous ink composition for writing tools is one characterized by comprising at least 0.05 to 1.5% by mass of an oxidized cellulose and 0.001 to 30% by mass of a sugar having a weight average molecular weight of 5000 or less.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI PENCIL COJP

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Inventor(s)

Inventor Name Address
TAKEUCHI YOJI YOKOHAMA-SHI KANAGAWA 221-0014
SAKANE NORIKO YOKOHAMA-SHI KANAGAWA 221-8550
NISHIJIMA CHIHIRO YOKOHAMA-SHI KANAGAWA 221-8550

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