EP 0351397 A3 19910515 - USE OF A POLYAMIDE-POLYAMINE-EPICHLOR HYDRINE PRECONDENSATE AS AN IMPREGNATION AGENT FOR PAPER
Title (en)
USE OF A POLYAMIDE-POLYAMINE-EPICHLOR HYDRINE PRECONDENSATE AS AN IMPREGNATION AGENT FOR PAPER
Publication
Application
Priority
AT 180388 A 19880712
Abstract (en)
[origin: EP0351397A2] The invention relates to the use of a polyamide-polyamine/epichlorohydrin precondensate as an additive to the impregnating fluid for the surface treatment of paper, in particular raw paper for corrugated board, in a mixture with ligninsulphonic acid, where appropriate as the calcium salt of the sulphonic acid, the degree of condensation of the precondensate being about 500.
IPC 1-7
IPC 8 full level
D21H 17/55 (2006.01); D21H 27/20 (2006.01); D21H 17/28 (2006.01); D21H 17/56 (2006.01)
CPC (source: EP)
D21H 17/55 (2013.01); D21H 27/20 (2013.01); D21H 17/28 (2013.01); D21H 17/56 (2013.01)
Citation (search report)
- [XD] FR 2444750 A1 19800718 - HERCULES INC [US]
- [A] DE 2018088 A1 19710218 - UNILEVER NV [NL]
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0351397 A2 19900117; EP 0351397 A3 19910515; EP 0351397 B1 19931222; AT 392809 B 19910625; AT A180388 A 19901115; DE 58906478 D1 19940203
DOCDB simple family (application)
EP 89890186 A 19890712; AT 180388 A 19880712; DE 58906478 T 19890712