Global Patent Index - EP 0985069 A1

EP 0985069 A1 2000-03-15 - METHOD FOR MAKING PAPER USING A GELLING SYSTEM

Title (en)

METHOD FOR MAKING PAPER USING A GELLING SYSTEM

Title (de)

VERFAHREN ZUR HERSTELLUNG VON PAPIER MITTELS EINES GEL-SYSTEMS

Title (fr)

PROCEDE DE FABRICATION DE PAPIER UTILISANT UN SYSTEME GELIFIANT

Publication

EP 0985069 A1 (FR)

Application

EP 98929474 A

Priority

  • FR 9801120 W
  • FR 9706949 A

Abstract (en)

[origin: FR2764313A1] The invention concerns a novel method for making paper by forming and drying aqueous paper pulp containing cellulose paste and mineral fillers, consisting in incorporating in the parent paste before forming the sheet a gelling system comprising a polymer containing at least a hydroxyl group, and a crosslinking agent in aqueous solution containing a element selected among the group consisting of borate, zirconate, titanate and their mixture. The cross-linking agent/polymer weight ratio containing at least a hydroxyl group ranges between 0.025 to 2.

IPC 1-7 (main, further and additional classification)

D21H 21/10; D21H 23/76

IPC 8 full level (invention and additional information)

D21H 21/10 (2006.01); D21H 23/76 (2006.01); D21H 17/25 (2006.01); D21H 17/32 (2006.01); D21H 17/36 (2006.01); D21H 17/66 (2006.01); D21H 27/22 (2006.01)

CPC (invention and additional information)

D21H 21/10 (2013.01); D21H 23/765 (2013.01); D21H 17/25 (2013.01); D21H 17/32 (2013.01); D21H 17/36 (2013.01); D21H 17/66 (2013.01); D21H 27/22 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB IT LI NL PT SE

EPO simple patent family

FR 2764313 A1 19981211; FR 2764313 B1 19990709; AU 7922198 A 19981221; CN 1262715 A 20000809; EP 0985069 A1 20000315; HU 0002293 A2 20001128; HU 0002293 A3 20011228; ID 23381 A 20000420; SK 165099 A3 20000612; WO 9855694 A1 19981210

INPADOC legal status


2003-07-09 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030103

2001-08-01 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010615

2000-03-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991230

2000-03-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB IT LI NL PT SE

2000-03-15 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: SI PAYMENT 19991230