Global patent index - EP 1077282 A1

EP 1077282 A1 2001-02-21 - Improved chemical pulping process

Title (en)

Improved chemical pulping process

Title (de)

Chemisches Aufschlussverfahren

Title (fr)

Procédé de mise en pâte chimique

Publication

EP 1077282 A1 (EN)

Application

EP 00117065 A

Priority

US 37342599 A

Abstract (en)

The use of an oxyalkylene-modified organopolysiloxane in combination with an alkylpolyglycoside as chemical pulping additives is disclosed. The pulping additives utilized in accordance with the chemical pulping process of the invention improve the physical properties of wood pulp and products produced therefrom.

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

D21C 3/22

IPC 8 full level (invention and additional information)

D21C 3/02 (2006.01); D21C 3/22 (2006.01)

CPC (invention and additional information)

D21C 3/222 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1077282 A1 20010221; JP 2001064889 A 20010313

INPADOC legal status

2002-06-26 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20010622

2002-02-21 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

- Ref Legal Event Code: 8566

2001-11-14 [AKX] PAYMENT OF DESIGNATION FEES

- Ref Legal Event Code: AKX

2001-02-21 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2001-02-21 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI