	US 12,433,290 B2
	Non-aqueous drift control suspensions
Serena Gazzo, Carnago (IT); Gianfranco Paganini, Conroe, TX (US); Lorenzo Giardini, Genoa (IT); Giovanni Floridi, Novara (IT); and Giuseppe Li Bassi, Gavirate (IT)
Assigned to LAMBERTI SPA, Albizzate (IT)
Appl. No. 17/604,133
Filed by Lamberti SPA, Albizzate (IT)
PCT Filed Apr. 23, 2020, PCT No. PCT/EP2020/061398 § 371(c)(1), (2) Date Oct. 15, 2021, PCT Pub. No. WO2020/216872, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 102019000006358 (IT), filed on Apr. 24, 2019.
Prior Publication US 2022/0192186 A1, Jun. 23, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A01N 25/04 (2006.01)

CPC A01N 25/04 (2013.01)

8 Claims

1. A non-aqueous suspension comprising:

a) from 20 to 90 wt % (% by weight) of a carrier fluid selected from the group consisting of glycols, polyglycols, glycol ethers, glycol esters, lactate esters, or mixtures thereof;

b) from 2 to 60 wt % of a water-soluble polymer dispersed in said carrier fluid, wherein said water-soluble polymer is selected among polysaccharides, derivatives of polysaccharides, and mixtures thereof;

c) from 0.5 to 15 wt % of a suspending agent, wherein said suspending agent is a copolymer obtained by polymerization of:

I. from 20 to 50% by weight of a monoethylenically unsaturated monomer containing a carboxylic group;

II. from 40 to 70% by weight of a (meth)acrylic acid ester;

III. from 0.01 to 1% by weight of a polyethylenically unsaturated monomer; and

IV. from 0 to 3% by weight of a nonionic acrylic associative monomer, wherein the sum of I and II represents at least 80% by weight of the monomer mixture;

d) from 1 to 20 wt % of an emulsifier; and

e) less than 10% by weight of water.