Global Patent Index - EP 1254189 A1

EP 1254189 A1 2002-11-06 - METHOD FOR OBTAINING POLYAMIDOAMINE-EPICHLORHYDRIN RESIN SUITED FOR MAKING WET-STRENGTH PAPER WITH LOW MONOCHLORO-3-PROPANEDIOL-1,2 CONTENT

Title (en)

METHOD FOR OBTAINING POLYAMIDOAMINE-EPICHLORHYDRIN RESIN SUITED FOR MAKING WET-STRENGTH PAPER WITH LOW MONOCHLORO-3-PROPANEDIOL-1,2 CONTENT

Title (de)

VERFAHREN ZUM GEWINNEN VON POLYAMIDOAMIN-EPICHLOROHYDRINHARZ GEEIGNET ZUR DARSTELLUNG VON MONOCHLORO-3-PROPANEDIOL-1,2-ARMEM NASSFESTEM PAPIER

Title (fr)

PROCEDE POUR L'OBTENTION DE RESINES POLYAMIDOAMINE-EPICHLORHYDRINE PROPRES A LA FABRICATION DE PAPIERS RESISTANTS HUMIDES A FAIBLE TENEUR EN MONOCHLORO-3-PROPANEDIOL-1,2

Publication

EP 1254189 A1 (FR)

Application

EP 00958750 A

Priority

  • FR 0002386 W
  • FR 9911078 A

Abstract (en)

[origin: FR2798132A1] The invention concerns a method for obtaining polyamidoamine-epichlorhydrin resins (PAE) suited for making wet-strength paper with low monochloro-3-propanediol-1,2 content. The method consists in synthesizing resins as such, which are then percolated on activated carbon columns. Thus aqueous resins are obtained free of detectable organo-chlorinated by-products, which are used as wet-strength additives for making paper for special uses containing less than 50 ppb of monochloro-3-propanediol-1,2.

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

C08G 73/02; D21H 17/55; D21H 27/08

IPC 8 full level (invention and additional information)

C08G 65/24 (2006.01); C08G 69/48 (2006.01); C08G 73/02 (2006.01); C08L 71/03 (2006.01); D21H 21/20 (2006.01); D21H 17/54 (2006.01)

CPC (invention and additional information)

D21H 21/20 (2013.01); C08G 65/24 (2013.01); C08G 69/48 (2013.01); C08G 73/0286 (2013.01); C08L 71/03 (2013.01); D21H 17/54 (2013.01)

Combination set (CPC)

C08L 71/03 + C08L 2666/20

Citation (search report)

See references of WO 0118093A1

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

FR 2798132 A1 20010309; FR 2798132 B1 20011012; AU 7017500 A 20010410; EP 1254189 A1 20021106; WO 0118093 A1 20010315

INPADOC legal status


2004-11-24 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040220

2002-11-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020402

2002-11-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2002-11-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI