The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 1985
Filed:
Nov. 05, 1984
Toranosuke Saito, Osaka, JP;
Masakatu Kitani, Hyogo, JP;
Takashi Ishibashi, Osaka, JP;
Naoto Arai, Hyogo, JP;
Takeshi Murakami, Hyogo, JP;
Toshitake Suzuki, Hyogo, JP;
Sanko Kaihatsu Kagaku Kenkyusho, Osaka, JP;
Kanzai Paper Manufacturing Company Ltd., Tokyo, JP;
Abstract
Novel phenolic compounds useful as a color developer suitable for satisfying the quality requirements of heat-sensitive recording materials are provided, which compounds are expressed by the general formula ##STR1## wherein R.sub.1 represents an alkyl group or a cycloalkyl group and R.sub.2 represents hydrogen atom or an alkyl group; and also heat-sensitive recording materials usable in a broad application field are provided, which recording materials are provided with a heat-sensitive recording layer composed mainly of a colorless basic dye and the above compounds as a color developer by which the dye forms colors, overlaid on a substrate.