Title:
AQUEOUS INK COMPOSITION FOR BALL PEN
Document Type and Number:
Japanese Patent JP2001294797
Kind Code:
A
Abstract:
To provide an ink for ball pens which shows an improved shelf- stability and is erasable with erasers.
The aqueous ink contains water, a dyestuff, a phosphoric ester surfactant, a rubber latex and polyvinylpyrrolidone and has a viscosity of 300 to 2,000 cP. In the rubber latex, the main component (designated as component A) has a particle size of ≥500 nm and a glass transition temperature of ≤-20°C and accounts for 70 to 95(%) of the total rubber latex, and the secondary component (designated as component B) has a glass transition temperature of ≥20°C.
Inventors:
YAMASHITA YUZO
OTSUKI KATSUTOSHI
OTSUKI KATSUTOSHI
Application Number:
JP2000152148A
Publication Date:
October 23, 2001
Filing Date:
April 14, 2000
Export Citation:
Assignee:
NIPPON COLOR KOGYO KK
International Classes:
C09D11/18; (IPC1-7): C09D11/18
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