Highly Concentrated Liquid Forms of Polysaccharide Ethers

Patent metadata

Field	Value
Publication number	US-2016249607-A1
Application number	US-201415029658-A
Country	US
Kind code	A1
Filing date	Oct 20, 2014
Priority date	Oct 22, 2013
Publication date	Sep 1, 2016
Grant date	—

Abstract

A liquid composition is provided, comprising 2 to 30 wt % of a non-ionic water-soluble polysaccharide ether, 55 to 90 wt %, of a polyol having 3 to 4 hydroxyl groups, 5 to 25 wt % of water, and 0.1 to 5 wt % of at least one multivalent inorganic anion salt. The invention also provides agricultural formulations obtained by adding such a liquid composition and an agriculturally active ingredient to water.

First claim

1 . A liquid composition comprising
a) 2 to 30 wt %, based on the total weight of the liquid composition, of a non-ionic water-soluble polysaccharide ether; b) 55 to 90 wt %, based on the total weight of the liquid composition, of a polyol having 3 to 4 hydroxyl groups; c) 5 to 25 wt %, based on the total weight of the liquid composition, of water; and d) 0.1 to 5 wt %, based on the total weight of the liquid composition, of at least one multivalent inorganic anion salt.

2 . A composition according to claim 1 comprising 5 to 20 wt %, based on the total weight of the liquid composition, of a non-ionic water-soluble polysaccharide ether.

3 . A composition according to claim 1 comprising 8 to 16 wt %, based on the total weight of the liquid composition, of a non-ionic water-soluble polysaccharide ether.

4 . A composition according to claim 1 , wherein said polysaccharide ether is cellulose ether or guar gum ether.

5 . A composition according to claim 1 , wherein said polysaccharide ether is a cellulose ether selected from the group consisting of hydroxyethyl cellulose, ethyl hydroxyethyl cellulose, hydroxybutyl methylcellulose, hydroxypropyl methylcellulose, methyl ethyl hydroxyethyl cellulose, hydrophobically modified ethyl hydroxyethyl cellulose and combinations thereof.

6 . A composition according to claim 1 , comprising a cellulose ether having a viscosity of at least 7.000 mPa*s, as measured at 1 wt % concentration in water at pH 7 with a Brookfield viscosimeter, type LV, at 12 rpm at 20° C., spindle No 3.

7 . A composition according to claim 1 , wherein said polysaccharide ether has a DS alkyl of 0 or from 0.1 to 2.5 wherein the alkyl has 1-4 carbon atoms.

8 . A composition according claim 1 , comprising a cellulose ether having a MS hydroxyalkyl of 0 or from 0.2 to 4.0, and the hydroxyalkyl is selected from the group consisting of hydroxyethyl, hydroxypropyl hydroxybutyl and combinations thereof.

9 . A composition according to claim 1 , comprising a cellulose ether having a MS hydrophobe of 0 or from 0.001 to 0.02, wherein the hydrophobe is a hydrocarbyl group having from 10 to 18 carbon atoms.

10 . A composition according to claim 1 , wherein said multivalent inorganic anion salts comprises salts of sulfates, phosphates and mixtures thereof.

11 . A composition according to claim 1 , wherein said polyol having 3 to 4 hydroxyl groups is selected from the group consisting of pentaerythritol, glycerol, trimethylolpropane, di-trimethylolpropane, erythritol, threitol and C 2-4 alkylene oxide adducts thereof, and mixtures thereof.

12 . A composition according to claim 1 , wherein the weight ratio of b) to c+d) is from 75:25 to 95:5.

13 . A composition according to claim 1 , further comprising at least one component selected from the group consisting of pH adjusting agents, polymeric carboxylic acids and preservatives.

14 . A composition according to claim 1 , further comprising at least one agriculturally active agent.

15 . A method for preparing an aqueous agricultural formulation, comprising adding at least one agriculturally active ingredient and a sufficient amount of the composition as defined in claim 1 to water in order to obtain an aqueous composition comprising the agriculturally active ingredient and from 0.005 to 0.5 wt %, based on the total weight of the agricultural formulation, of the non-ionic linear polysaccharide ether.

16 . An aqueous agricultural formulation obtained by the method of claim 15 .

17 . A method for treating a plant comprising contacting said plant with an agricultural formulation according to claim 16 , preferably by spraying the agricultural formulation onto said plant.

18 . A method of dispersing a non-ionic, water-soluble polysaccharide ether with a polyol having 3-4 hydroxyl groups, water and at least one salt of a multivalent anion, wherein the weight ratio of the polyol to the sum of water and the salt of a multivalent inorganic anion in the mixture is from 75:25 to 95:5, preferably from 80:20 to 90:10, and the concentration of the salt of multivalent inorganic anion is from 4 to 20 wt % based on the total weight of the salt of multivalent inorganic anion and water.

Assignees

• Akzo Nobel Chemicals Int Bv

Inventors

• Westbye Peter
• Yuan-Huffman Qingwen Wendy

Classifications

• A01N25/24 Primary

  containing ingredients to enhance the sticking of the active ingredients · CPC title

• A01N25/02 Primary

  containing liquids as carriers, diluents or solvents · CPC title

• A01N25/30

  characterised by the surfactants · CPC title