EP 0386992 A3 19910612 - COLOUR FORMERS FOR RECORDING SHEETS
Title (en)
COLOUR FORMERS FOR RECORDING SHEETS
Publication
Application
Priority
- US 32064289 A 19890308
- US 39770389 A 19890823
Abstract (en)
[origin: EP0386992A2] Novel bis-(indolyl)ethylenes, process for their production when novel and generally, and record systems utilizing bis-(indolyl)ethylene chromogens; novel di-[bis-(indolyl)ethyleneyl] tetrahalophthalides.
IPC 1-7
IPC 8 full level
B41M 5/136 (2006.01); B41M 5/145 (2006.01); B41M 5/323 (2006.01); B41M 5/327 (2006.01)
CPC (source: EP)
B41M 5/136 (2013.01); B41M 5/145 (2013.01); B41M 5/323 (2013.01); B41M 5/327 (2013.01)
Citation (search report)
- [XP] EP 0325708 A1 19890802 - BAYER AG [DE]
- [A] EP 0242169 A2 19871021 - YAMADA CHEM CO [JP]
- [A] US 4349679 A 19820914 - GARNER ROBERT, et al
- [AD] US 4020056 A 19770426 - FARBER SHELDON
- [X] CHEMICAL ABSTRACTS, vol. 103, no. 1, 08 July 1985 Columbus, Ohio, USA J.Mueller et al: "Regioselective synthesis of symmetric 3,3-bisindolylethenes." page 557; left-hand column; ref. no. 6178F
- [A] CHEMICAL ABSTRACTS, vol. 108, no. 17, 25 April 1988 Columbus, Ohio, USA U.Pindur et al: "Selective synthesis of 1-aryl-,1-hetaryl- and 1-alkylsubstituted 3-vinylindoles" page 721; right-hand column; ref. no. 150225Q
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI
DOCDB simple family (publication)
EP 0386992 A2 19900912; EP 0386992 A3 19910612; FI 901156 A0 19900307
DOCDB simple family (application)
EP 90302353 A 19900306; FI 901156 A 19900307