EP 0058621 A1 19820825 - Reducing the deposition of pitch-like resins in the production of paper.
Title (en)
Reducing the deposition of pitch-like resins in the production of paper.
Title (de)
Herabsetzung der Ablagerung von klebrigen Harzen während der Papierherstellung.
Title (fr)
Diminution de la formation de dépÔt de résines poisseuses lors de la production de papier.
Publication
Application
Priority
US 23452381 A 19810217
Abstract (en)
Pitch-like resin deposits are reduced or prevented during the papermaking process by adding to the papermaking slurry from 0.5 to 20 parts per million by weight of a polymer or copolymer of the formula: <CHEM> where DMDAAX<(-)> is a polymer unit resulting from monomeric dimethyldiallylammonium X<(-)>; X<(-)> is an anion; m is from 100 to 90 weight percent; and n is from 0 to 10 weight percent, said polymer or copolymer having a weight average molecular weight of from about 100,000 to 4 x 10<6>.
IPC 1-7
IPC 8 full level
D21C 9/08 (2006.01); D21H 17/37 (2006.01)
CPC (source: EP)
D21C 9/086 (2013.01)
Citation (search report)
- [A] US 4077930 A 19780307 - LIM SIM KOEI, et al
- [A] US 3514398 A 19700526 - SCHAPER RAYMOND J
- [AD] US 3288770 A 19661129 - BUTLER GEORGE B
Designated contracting state (EPC)
AT DE FR SE
DOCDB simple family (publication)
EP 0058621 A1 19820825; AU 8039982 A 19820826; DK 66282 A 19820818; FI 820475 L 19820818; JP S57149591 A 19820916; NO 820465 L 19820818
DOCDB simple family (application)
EP 82400266 A 19820215; AU 8039982 A 19820211; DK 66282 A 19820216; FI 820475 A 19820212; JP 2294182 A 19820217; NO 820465 A 19820216