Color-developing composition and recording material containing the same

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United States of America Patent

PATENT NO 8546299
APP PUB NO 20110104619A1
SERIAL NO

12997791

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is a recording material with a superior heat resistance and having a low content of a dihydroxydiphenylsulfone derivative, and a color-developing composition for producing the recording material. With the use of this color-developing composition, a recording material with a superior heat resistance at the background part can be provided and the content of a dihydroxydiphenylsulfone derivative, such as 4,4′-dihydroxydiphenylsulfone, in the color-developing composition can be reduced to 2% by mass or less, or further to 1% by mass or less.

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Patent Owner(s)

  • NIPPON SODA CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujii, Hiroshi Ichihara, JP 233 3482
Jyujyo, Kazumi Kisarazu, JP 7 16
Kawakami, Tadashi Ichihara, JP 15 33
Kodama, Satoshi Ichihara, JP 38 489

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