EP 2389397 A1 20111130 - AQUEOUS POLYMER DISPERSION
Title (en)
AQUEOUS POLYMER DISPERSION
Title (de)
WÄSSRIGE POLYMERDISPERSION
Title (fr)
DISPERSION AQUEUSE DE POLYMÈRE
Publication
Application
Priority
- EP 2010000122 W 20100113
- EP 09000845 A 20090122
- EP 10700214 A 20100113
Abstract (en)
[origin: EP2218738A1] Aqueous polymer dispersion comprises at least one core copolymer (A) and at least one shell copolymer (B), where the glass transition temperature (T g) of the core is 70-100[deg] C, the T gof the shell is 20-55[deg] C, the total T gof the core-shell copolymer is 30-80[deg] C and the dispersion contains an emulsifier content of = 1.5 wt.%, relative to the solid substance. An independent claim is included for preparing the above polymer dispersion, comprising (a1) providing water, emulsifier and optionally a small quantity of initiator, (a2) subsequently adding a content of the monomers ((i) 1-20C alkyl(meth)acrylate, (ii) vinyl aromatic compounds having up to 20C and (iii) acid functional monomer) of 1-10 wt.% optionally simultaneously during the addition of the initiator for forming an internal seed, (a3) adding the monomers ((i)-(iii) and (iv) optional hydroxy functional monomer), for the copolymer (A) (core) in step-wise manner, (a4) polymerizing up to a quantity of at least 5 wt.%, relative to its total weight, (a5) adding the monomers (i)-(iv) for the copolymer (B), and (a6) polymerizing up to a quantity of at least 5 wt.%, relative to its total weight.
IPC 8 full level
C08F 265/06 (2006.01); C09D 15/00 (2006.01); C09D 151/00 (2006.01)
CPC (source: EP KR US)
C08F 265/06 (2013.01 - EP KR US); C08F 285/00 (2013.01 - EP US); C08J 3/02 (2013.01 - KR); C09D 15/00 (2013.01 - EP KR US); C09D 151/00 (2013.01 - KR); C09D 151/003 (2013.01 - EP US)
Citation (search report)
See references of WO 2010083954A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2218738 A1 20100818; CA 2750016 A1 20100729; CN 102292363 A 20111221; EP 2389397 A1 20111130; JP 2012515812 A 20120712; KR 20110117097 A 20111026; MX 2011007631 A 20110812; US 2011306727 A1 20111215; WO 2010083954 A1 20100729
DOCDB simple family (application)
EP 09000845 A 20090122; CA 2750016 A 20100113; CN 201080005024 A 20100113; EP 10700214 A 20100113; EP 2010000122 W 20100113; JP 2011546661 A 20100113; KR 20117017045 A 20100113; MX 2011007631 A 20100113; US 201013145510 A 20100113