Global Patent Index - EP 1841916 A1

EP 1841916 A1 2007-10-10 - IMPROVED RETENTION AND DRAINAGE IN THE MANUFACTURE OF PAPER

Title (en)

IMPROVED RETENTION AND DRAINAGE IN THE MANUFACTURE OF PAPER

Title (de)

VERBESSERTE RETENTION UND ENTWÄSSERUNG BEI DER PAPIERHERSTELLUNG

Title (fr)

RETENTION ET EGOUTTAGE AMELIORES DANS LA FABRICATION DE PAPIER

Publication

EP 1841916 A1 (EN)

Application

EP 05855567 A

Priority

  • US 2005047032 W
  • US 69405705 P
  • US 69405905 P
  • US 31350305 A
  • US 64016304 P
  • US 63989704 P
  • US 64016604 P

Abstract (en)

[origin: US2006137843A1] A method of improving retention and drainage in a papermaking process is disclosed. The method provides for the addition of an associative polymer, an inorganic particle and optionally a siliceous material to the papermaking slurry. Additionally, a composition comprising an associative polymer, and an inorganic particle and optionally further comprising cellulose fiber is disclosed.

IPC 8 full level (invention and additional information)

D21H 21/10 (2006.01)

CPC (invention and additional information)

D21H 21/10 (2013.01); D21H 17/33 (2013.01); D21H 17/375 (2013.01); D21H 17/67 (2013.01)

Citation (search report)

See references of WO 2006071853A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

EPO simple patent family

US 2006137843 A1 20060629; AU 2005322032 A1 20060706; BR PI0519458 A2 20090127; CA 2592262 A1 20060706; EP 1841916 A1 20071010; JP 2008525667 A 20080717; KR 20070111461 A 20071121; MX 2007007904 A 20070820; TW 200630516 A 20060901; WO 2006071853 A1 20060706

INPADOC legal status


2008-09-10 [18W] WITHDRAWN

- Effective date: 20080805

2008-04-09 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED

2007-12-26 [RIN1] INVENTOR (CORRECTION)

- Inventor name: SUTMAN, FRANK, J.

2007-12-26 [RIN1] INVENTOR (CORRECTION)

- Inventor name: ZHANG, FUSHAN

2007-10-10 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20070622

2007-10-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR