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)

Citation (search report)

See references of WO 9855694A1

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2003-07-09 [18D] DEEMED TO BE WITHDRAWN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