Title:
FINELY DIVIDED, STARCH-CONTAINING POLYMER DISPERSIONS, PROCESSES FOR THEIR PREPARATION AND USE AS SIZES IN PAPERMAKING
Document Type and Number:
WIPO Patent Application WO/2013/053840
Kind Code:
A3
Abstract:
A finely divided, starch-containing polymer dispersion which is obtainable by free radical emulsion polymerization of ethylenically unsaturated monomers in the presence of at least one redox initiator and starch, wherein (a) from 0 to less than 40% by weight of at least one optionally substituted styrene, (b) from greater than 60 to 100% by weight of at least one C1-C12-alkyl acrylate and/or C1-C12-alkyl methacrylate, (c) from 0 to 10% by weight of at least one other ethylenically unsaturated copolymerizable monomer, are used as the ethylenically unsaturated monomers, the sum (a) + (b) + (c) being 100% and being based on the active monomer content and (d) from 15 to 40% by weight of at least one degraded starch which has a molar mass Mw of from 1000 to 65 000 g/mol, based on the total weight of solids content of components (a) + (b) + (c) + (d), are used as the starch, and the polymerization being carried out in the presence of at least 0.01% by weight, based on the monomers used, of at least one terpene containing chain-transfer agent, and in which the polymer dispersion optionally comprises an aluminium compound. The use of the finely divided, starch-containing polymer dispersions as sizes for paper, board and cardboard is also claimed.
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| JP4721695 | Aqueous coating composition |
| WO/2001/014428 | POLYMERIZATION METHOD |
Inventors:
CIMPEANU CARMEN-ELENA (DE)
KERN HOLGER (DE)
ARNOLD PETRA (DE)
HAMERS CHRISTOPH (DE)
KERN HOLGER (DE)
ARNOLD PETRA (DE)
HAMERS CHRISTOPH (DE)
Application Number:
PCT/EP2012/070188
Publication Date:
August 08, 2013
Filing Date:
October 11, 2012
Export Citation:
Assignee:
BASF SE (DE)
CIMPEANU CARMEN-ELENA (DE)
KERN HOLGER (DE)
ARNOLD PETRA (DE)
HAMERS CHRISTOPH (DE)
CIMPEANU CARMEN-ELENA (DE)
KERN HOLGER (DE)
ARNOLD PETRA (DE)
HAMERS CHRISTOPH (DE)
International Classes:
C08F212/08; C08F2/24; C08F220/16; D21H17/28; D21H17/34; D21H21/16
Domestic Patent References:
| WO2011039185A2 | 2011-04-07 |
Foreign References:
| JP2000239992A | 2000-09-05 | |||
| US20100236736A1 | 2010-09-23 | |||
| US5169886A | 1992-12-08 |
Attorney, Agent or Firm:
PEATFIELD, Jeremy William (Cleckheaton RoadLow Moor, Bradford Yorkshire BD12 OJZ, GB)
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