Title:
HEAT-SENSITIVE RECORDING MATERIAL AND DIPHENYLSULFONE
Document Type and Number:
WIPO Patent Application WO/2017/086302
Kind Code:
A1
Abstract:
According to the present invention, the contained amount of a compound measured by mass spectrometry to have a molecular weight of 650-670, typically a molecular weight of 660, is reduced to 0.5 mass% or less in a heat-sensitive recording material containing 3,3'-diallyl-4,4'-dihydroxy diphenylsulfone, or in a diphenylsulfone or a color developer. Accordingly, a heat-sensitive recording material, a color developer, or a diphenylsulfone is provided which is less susceptible to background fogging under moisture and heat and which has excellent color-developed image preservation stability.
Inventors:
EGUSA TSUNETOSHI (JP)
FUJII TAKASHI (JP)
TSUKUI HIROYUKI (JP)
KURATA TAKAAKI (JP)
FUJII TAKASHI (JP)
TSUKUI HIROYUKI (JP)
KURATA TAKAAKI (JP)
Application Number:
PCT/JP2016/083791
Publication Date:
May 26, 2017
Filing Date:
November 15, 2016
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
International Classes:
B41M5/333; C07C317/22
Domestic Patent References:
| WO2004089883A1 | 2004-10-21 |
Foreign References:
| JPH11208121A | 1999-08-03 | |||
| JP2015124208A | 2015-07-06 | |||
| JPH1129549A | 1999-02-02 | |||
| JPS6189090A | 1986-05-07 | |||
| JPS6253957A | 1987-03-09 | |||
| JPH01150576A | 1989-06-13 | |||
| JPH01178491A | 1989-07-14 | |||
| JP3992252B2 | 2007-10-17 |
Other References:
See also references of EP 3378666A4
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, P.C. (JP)
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