EP 2121781 A1 20091125 - FINE-PARTICULATE POLYMER DISPERSIONS COMPRISING STARCH
Title (en)
FINE-PARTICULATE POLYMER DISPERSIONS COMPRISING STARCH
Title (de)
FEINTEILIGE, STÄRKEHALTIGE POLYMERDISPERSIONEN
Title (fr)
DISPERSIONS POLYMÈRES AMYLACÉES À FINES PARTICULES
Publication
Application
Priority
- EP 2007063680 W 20071211
- EP 06126098 A 20061214
- EP 07857375 A 20071211
Abstract (en)
[origin: WO2008071688A1] The invention relates to fine-particulate polymer dispersions comprising starch, obtained by radically initiated emulsion copolymerization of ethylenically unsaturated monomers in the presence of a redox initiator and an enzymatically degraded starch, wherein the enzymatic degradation of starch is stopped by adding at least one acid comprising a phosphorus atom to the reaction mixture. According to the invention, at least one acid comprising a phosphorus atom is used in order to stop the enzymatic degradation of starch and the fine-particulate polymer dispersions comprising starch of emulsion polymers are used as sizing agents for paper and paper products, particularly as surface sizing agents.
IPC 8 full level
C08F 220/00 (2006.01); C08F 2/24 (2006.01); D21H 17/34 (2006.01)
CPC (source: EP US)
C08F 2/24 (2013.01 - EP US); C08F 4/40 (2013.01 - EP US); D21H 17/28 (2013.01 - EP US)
Citation (search report)
See references of WO 2008071688A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008071688 A1 20080619; CN 101558093 A 20091014; EP 2121781 A1 20091125; US 2010324178 A1 20101223
DOCDB simple family (application)
EP 2007063680 W 20071211; CN 200780046155 A 20071211; EP 07857375 A 20071211; US 51800207 A 20071211