EP 0008761 B1 19811104 - PAPER SIZING AGENT AND PAPER SIZED THEREWITH
Title (en)
PAPER SIZING AGENT AND PAPER SIZED THEREWITH
Publication
Application
Priority
- DE 2838270 A 19780901
- DE 2856858 A 19781230
Abstract (en)
[origin: EP0008761A1] 1. Sizing agents for paper consisting of an aqueous preparation of dibasic fatt acid amides, quaternized with 0.5-1 equivalent (based on the amino groups in the basic amide) of epichlorohydrin, derived from fatty acids having melting points above 30 degrees C and amines of the general formula H2 N-R-(NH-R')n -NH2 and/or technical mixtures thereof, wherein R and R' are identical or different and denote an alkylene radical with 2 or 3 C atoms and n has a value from 1-6, and the technical amines can contain accompanying substances in quantities of up to 80 % by weight which consist essentially of cyclic and/or branched amines, which have approximately the same technical boiling range, characterized in that the sizing agents for paper contain 0.05 to 1 % by weight (based on solids content) of an electrolyte and the quaternization is carried out in the presence of water.
IPC 1-7
IPC 8 full level
D21H 17/55 (2006.01)
CPC (source: EP)
D21H 17/55 (2013.01)
Designated contracting state (EPC)
BE CH DE FR GB IT NL
DOCDB simple family (publication)
EP 0008761 A1 19800319; EP 0008761 B1 19811104; CA 1152243 A 19830816; DE 2961254 D1 19820114; ES 483786 A1 19800516; FI 792701 A 19800302; NO 792679 L 19800304
DOCDB simple family (application)
EP 79103153 A 19790827; CA 334775 A 19790830; DE 2961254 T 19790827; ES 483786 A 19790831; FI 792701 A 19790830; NO 792679 A 19790816