US 12,219,954 B2
Aqueous dispersion of a pesticide and polymer particles containing a copolymerizable surfactant
Wen Xu, Cary, NC (US); and Michael Krayer, Charlotte, NC (US)
Assigned to BASF SE, Ludwigshafen (DE)
Appl. No. 15/534,158
Filed by BASF SE, Ludwigshafen (DE)
PCT Filed Dec. 7, 2015, PCT No. PCT/EP2015/078818
§ 371(c)(1), (2) Date Jun. 8, 2017,
PCT Pub. No. WO2016/091801, PCT Pub. Date Jun. 16, 2016.
Claims priority of provisional application 62/089,266, filed on Dec. 9, 2014.
Claims priority of application No. 14197983 (EP), filed on Dec. 15, 2014.
Prior Publication US 2019/0000077 A1, Jan. 3, 2019
Int. Cl. A01N 25/10 (2006.01); A01N 25/00 (2006.01); A01N 25/04 (2006.01); A01N 25/30 (2006.01); A01N 43/36 (2006.01); A01N 47/24 (2006.01); A01N 53/00 (2006.01)
CPC A01N 25/10 (2013.01) [A01N 25/00 (2013.01); A01N 25/04 (2013.01); A01N 25/30 (2013.01); A01N 43/36 (2013.01); A01N 47/24 (2013.01); A01N 53/00 (2013.01)] 20 Claims
 
1. An aqueous dispersion comprising:
water as an aqueous continuous phase, the water being present in an amount from 20% to 85% by weight based on the total weight of the aqueous dispersion;
a water-insoluble pesticide in the form of at least one of pesticide particles and emulsified droplets which are homogeneously suspended or emulsified in the aqueous continuous phase, the pesticide being present in an amount of at least 5% by weight based on the total weight of the aqueous dispersion; and
polymer particles which are homogeneously suspended in the aqueous continuous phase, the polymer particles being present in an amount from 0.1% to 20% by weight based on the total weight of the aqueous dispersion, the polymer particles comprising monomers in polymerized form, wherein the monomers comprise:
(I) 0.1 to 20 wt. % of an alkoxylated copolymerizable surfactant according to formula (Ia) based on the total weight of the monomers:

OG Complex Work Unit Chemistry
(II) at least 20 wt % of a C2-C6 alkyl (meth)acrylate based on the total weight of the monomers, and
(III) at least 20 wt. % of methyl (meth)acrylate based on the total weight of the monomers;
wherein:
R4 is C9-C15 alkyl or C7-C11 alkyl-phenyl,
X is H or SO3−, and
the index o is from 3 to 50.