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:
Jul. 01, 1986
Filed:
Jan. 22, 1985
Applicant:
Inventors:
Hideyuki Sensui, Tokyo, JP;
Susumu Suzuka, Yono, JP;
Michihiro Gonda, Kitamoto, JP;
Katsumasa Kikkawa, Tokyo, JP;
Assignee:
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
106 21 ; 346221 ; 549226 ;
Abstract
A novel 6-tetrahydrofurfurylaminofluoran compound useful as a color former (precursory colorant) for a heat-sensitive recording sheet is of the formula (I): ##STR1## wherein R.sub.1 is H, C.sub.1-8 alkyl, tetrahydrofurfuryl, phenyl, alkyl(C.sub.1-5)phenyl, or C.sub.3-8 cyclic alkyl, R.sub.2 is H, Cl, F, C.sub.1-5 alkyl, C.sub.1-5 alkoxy, C.sub.2-10 alkoxyalkyl, phenyl or benzyl, and R.sub.3 is H, Cl, F, C.sub.1-5 alkyl and C.sub.2-7 acryl.