EP 0486745 A1 19920527 - Improved solvents for chromogens useful in the manufacture of carbonless copying paper.
Title (en)
Improved solvents for chromogens useful in the manufacture of carbonless copying paper.
Title (de)
Verbesserte Lösungsmitteln für Chromogene, die bei der Herstellung von Aufzeichnungspapieren ohne Kohlenstoff verwendet werden.
Title (fr)
Solvants améliorés pour chromogènes utiles dans la fabrication des papiers d'enregistrement sans carbone.
Publication
Application
Priority
EP 90870216 A 19901120
Abstract (en)
A primary solvent comprising a mixture of 80% to 5% wt. of an aromatic, or partially or fully hydrogenated aromatic hydrocarbon compound and 20% to 95% wt. of an ether compound, which is optionally used in combination with a secondary solvent or diluent in a weight ratio primary: secondary solvent ranging from 95:5 to 20:80. The primary solvent has improved solvency power for chromogens for carbonless copying paper.
IPC 1-7
IPC 8 full level
B41M 5/165 (2006.01)
CPC (source: EP)
B41M 5/1655 (2013.01)
Citation (search report)
- [X] US 4275906 A 19810630 - JOHNSON GRANNIS S, et al
- [X] EP 0057740 A1 19820818 - DIAMOND SHAMROCK CORP [US]
- [X] GB 2207687 A 19890208 - FUJI PHOTO FILM CO LTD
- [X] GB 2106529 A 19830413 - MONSANTO CO
- [X] DE 2450733 A1 19750507 - NCR CO
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 90870216 A 19901120