Spray composition having a deposition control agent
View Patent ↗A spray composition includes an aqueous spray medium, an active ingredient, and a deposition control agent, wherein: the composition comprises at least one surfactant, and the deposition control agent is selected from the group consisting of the following: hydroxypropyl guar having a molecular substitution of at least 0.6, hydroxyalkyl guars, wherein the alkyl has at least 4 carbon atoms, having a molecular substitution of at least 0.15, guar having both carboxymethyl groups and hydoxyalkyl groups and having a molecular substitution of at least 0.1, and guar having both hydroxyalkyltrimethylammonium, preferably hydroxypropyltrimethylammonium or alkyltrimethylammonium and hydroxyalkyl groups.
1. A spray composition, comprising:
an aqueous spray medium,
between 0.05% by weight and 2% by weight of at least one surfactant, and
from 0.01 to 0.5% by weight of a deposition control agent, wherein the deposition control agent is selected from the group consisting of hydroxypropyl guars having a molecular substitution of at least 1.1 and hydroxybutyl guars having a molecular substitution of at least 0.4.
2. A spray composition according to claim 1 , wherein the surfactant is an anionic surfactant, a cationic surfactant, a nonionic surfactant, an amphoteric surfactant, a zwitterionic surfactant, or a mixture thereof.
3. A spray composition according to claim 1 , wherein the deposition control agent has a weight average molecular weight of from 50,000 g/mol to 10,000,000 grams per mole.
4. A spray composition according to claim 1 , having a retraction speed of lower than 200 mm/s.
5. A spray composition according to claim 1 , further comprising an active ingredient, wherein the active ingredient is a herbicide, a pesticide, a fungicide, an aphicide, a miticide, or a fertilizing agent.
6. A spray composition according to claim 5 , wherein the active ingredient is a fungicide selected from the group consisting of nitrilo oximes; imidazoles; triazoles; sulfenamides; dithio-carbamates; strobilurins; Chlorothalonil; copper salts; sulfur; phenylamides and phenylamide derivatives and chloronated aromatics.
7. A spray composition according to claim 5 , wherein the active ingredient is a foliar fertilizer.
8. A spray composition according to claim 5 , wherein the composition further comprises one or more of:
a further drift control agent,
an anti-foaming agent,
an anti-leaching agent,
a rheology modifier,
a humectant,
a fluid fertilizer;
penetrants and/or spreading agents, and
chelators and water conditioners.
9. A spray composition according to claim 1 , wherein the composition is:
a coating composition, further comprising an active ingredient to be deposited on a surface,
a textile-care composition, further comprising an active ingredient to be deposited on a textile surface,
a hard surface cleaning composition, further comprising an active ingredient to be applied to a hard surface,
an ink, a color coating or stain coating, or
an aerosol spray to be dispensed from a canister.
10. A method of controlling the deposition of a composition comprising an active agent, comprising the step of:
preparing a spray composition according to claim 5 , and
ground or aerial spraying or discharging droplets of the composition.
11. A method according to claim 10 , wherein spraying is performed though a nozzle, and the droplets have size of at least 50 μm.
12. The spray composition of claim 1 , wherein the deposition control agent is a hydroxypropyl guar.
13. The spray composition of claim 12 , wherein the hydroxypropyl guar has a molecular substitution of at least 1.3.
14. The spray composition of claim 1 , wherein the deposition control agent is a hydroxybutyl guar.
15. The composition of claim 1 , wherein the composition exhibits improved anti-rebound properties.