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:
Aug. 04, 1992
Filed:
Sep. 12, 1990
Toshio Nakamatsu, Osaka, JP;
Masanobu Terao, Hyogo, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Daiei Chemical Company, Limited, Hyogo, JP;
Abstract
A methine compound represented by the following formula and an agent containing the same for coloring resins such as polystyrene, ABS. ##STR1## wherein R.sup.1 is a hydrogen atom, a lower alkyl group, a lower alkoxy group, a nitro group or a lower carboxylic ester group; R.sup.2 is a lower alkyl group, a lower carboxylic amide group or a lower carboxylic ester group; and X is --SO.sub.2 NR.sup.3 R.sup.4, --SO.sub.2 NCHNR.sup.5 R.sup.6 or --SO.sub.2 R.sup.7, where R.sup.3 and R.sup.4 each is a hydrogen atom, a lower alkyl group or a phenyl group, R.sup.5 and R.sup.6 each is a lower alkyl group, and R.sup.7 is a lower alkyl group or a hydroxyethyl group.