| (19) |
 |
|
(11) |
EP 1 659 220 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
08.04.2009 Bulletin 2009/15 |
| (43) |
Date of publication A2: |
|
24.05.2006 Bulletin 2006/21 |
| (22) |
Date of filing: 12.04.2000 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
|
00923270.3 / 1272708 |
| (71) |
Applicant: HERCULES INCORPORATED |
|
Wilmington, DE 19894-0001 (US) |
|
| (72) |
Inventor: |
|
- Lin, Tingdong
Mooresville, NC 28117-4407 (US)
|
| (74) |
Representative: HOFFMANN EITLE |
|
Patent- und Rechtsanwälte
Arabellastrasse 4
81925 München
81925 München (DE) |
|
| |
|
| (54) |
Paper sizing composition |
(57) Paper sizing composition comprising (a) cellulose-reactive size, (b) dispersant system
comprising primary anionic dispersant, and secondary dispersant selected from cationic
and/or non-ionic dispersant, and (c) inorganic salt.