Lecithin-based spray adjuvant containing organosilicon wetting agents
The present disclosure relates to an adjuvant composition comprising lecithin; and, an organosilicon surfactant of formula (I): R 1 —Si(CH 3 ) 2 —Z (I) wherein: R 1 is a branched monovalent hydrocarbon group of from 5 to 8 carbon atoms containing at least two methyl groups; Z is R 2 or R 3 ; R 2 is CH 2 CH 2 CH 2 —O C 2 H 4 —O) a (C 3 H 6 O) b (C 4 H 8 O) c —R 4 in which R 4 is hydrogen, a linear or branched monovalent hydrocarbon group of from 1 to about 4 carbon atoms or an acyl group, subscript a is from 1 to about 20, subscript b is from 0 to about 19, subscript c is from 0 to about 19 and the sum of subscripts a, b and c is from 1 to about 20; and, R 3 is —CH 2 CH 2 CH 2 —O—CH(OH)CH 2 —N + (CH 3 ) 2 —R 5 [X − ] in which R 5 is a linear or branched hydrocarbon group of from 1 to about 4 carbon atoms or an acetyl group and X − is a saturated or unsaturated carboxylate anion of from 2 to about 22 carbon atoms optionally containing 1 or 2 hydroxyl groups.
1. An adjuvant composition comprising:
a) lecithin; and,
b) an organosilicon surfactant of general formula (I):
R 1 —Si(CH 3 ) 2 —Z
wherein:
R 1 is a branched monovalent hydrocarbon group of from 5 to 8 carbon atoms containing at least two methyl groups;
Z is R 2 or R 3 ;
R 2 is CH 2 CH 2 CH 2 —O C 2 H 4 —O) a (C 3 H 6 O) b (C 4 H 8 O) c —R 4 in which R 4 is hydrogen, a linear or branched monovalent hydrocarbon group of from 1 to about 4 carbon atoms or an acyl group, subscript a is from 1 to about 20, subscript b is from 0 to about 19, subscript c is from 0 to about 19 and the sum of subscripts a, b and c is from 1 to about 20; and,
R 3 is —CH 2 CH 2 CH 2 O—CH(OH)CH 2 —N + (CH 3 ) 2 —R 5 [X − ] in which R 5 is a linear or branched hydrocarbon group of from 1 to about 4 carbon atoms or an acetyl group and X − is a saturated or unsaturated carboxylate anion of from 2 to about 22 carbon atoms containing 0 to 2 hydroxyl groups.
2. The adjuvant composition of claim 1 wherein the lecithin component (a) contains from 10 to 70 weight percent lecithin as phosphalidylcholine with the balance being selected from phosphatidylethanolamine, phosphalidylinositol, phosphatidic acid, glycolipids, complexed sugars and triglycerides, having a hydrophilic-lipophilic balance between 2 and 15.
3. The adjuvant composition of claim 1 wherein the lecithin component (a) has an average acetone insoluble (AI) content of more than 60 weight percent.
4. The adjuvant composition of claim 2 wherein the lecithin component (a) has an average acetone insoluble (AI) content of more than 60 weight percent.
5. The adjuvant composition of claim 1 wherein the organosilicon surfactant (b) of the general formula (I) is such that R 1 is the branched alkyl group:
CR 6 R 7 R 8 (CR 9 R 10 ) m (CR 11 R 12 ) n CHR 13 CH 2 —
in which R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 and R 13 each independently is hydrogen or methyl, and wherein from 2 to 4 of the R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 and R 13 groups are methyl and the subscripts m and n are each independently 0 or 1.
6. The adjuvant composition of claim 5 wherein R 1 contains from 2 to 4 methyl groups, CR 6 R 7 R 8 is selected from the group consisting of H 3 C—, (H 3 C) 2 CH— and (H 3 C) 3 C—, the subscripts m and/or n are 0, Z is R 2 and R 2 is —CH 2 CH 2 CH 2 —O—(C 2 H 4 O) a (C 3 H 6 O) b —R 4 in which R 4 is hydrogen, linear or branched alkyl of from 1 to 4 carbon atoms, or an acyl group, the subscript a is from 1 to about 20, subscript b is from 0 to about 10, and the sum of the subscripts a and b is from 1 to about 20.
7. The adjuvant composition of claim 6 wherein the subscript a is from 2 to about 15.
8. The adjuvant composition of claim 6 wherein the subscript a is from 4 to about 10.
9. The adjuvant composition of claim 6 wherein the subscript b is from 0 to about 6.
10. The adjuvant composition of claim 7 wherein subscript b is from 0 to about 6 and the sum of subscripts a and b is from 2 to about 15.
11. The adjuvant composition of claim 8 wherein subscript b is from 0 to about 4 and the sum of subscripts a and b is from about 4 to about 10.
12. The adjuvant composition of claim 5 , wherein R 1 contains from 2 to 4 methyl groups, CR 6 R 7 R 8 is H 3 C—, (H 3 C) 2 CH— or (H 3 C) 3 C—, m and/or n are 0 or 1, Z is R 3 and R 3 is —CH 2 CH 2 CH 2 —O—CH 2 (OH)—CH 2 —N + (CH 3 ) 2 —R 5 [X − ] in which R 5 is a linear or branched alkyl of from 1 to about 4 carbon atoms.
13. The adjuvant composition of claim 5 , wherein R 1 contains from 2 to 4 methyl groups, CR 1 R 2 R 3 is (H 3 C) 2 CH— or (H 3 C) 3 C—, m is 0 or 1, n is 0, Z is R 3 and R 3 is —CH 2 CH 2 CH 2 O—CH(OH)—CH 2 —N + (CH 3 ) 2 —R 5 [X − ] in which R 5 is a linear or branched alkyl group of from 1 to about 4 carbon atoms and X″ is a carboxylate anion of from 2 to about 10 carbon atoms and from 0 to 2 hydroxyl groups.
14. The adjuvant composition of claim 13 , wherein X − is a carboxylate anion of from 2 to about 6 carbon atoms and from 0 to 2 hydroxyl groups.
15. The adjuvant composition of claim 5 wherein the organosilicon surfactant is at least one ether- or polyether-modified monosilyl compound selected from the group consisting of:
CR 6 R 7 R 8 (CR 9 R 10 ) m (CR 11 R 12 ) n —CHR 13 —CH 2 —Si(CH 3 ) 2 —
—Z
(H 3 C) 2 CHCH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—(C 2 H 4 O) 7.5 H
(H 3 C) 3 CCH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—(C 2 H 4 O) 7.5 CH 3
(H 3 C) 2 CHCH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O(CH 2 H 4 O) 5 (C 3 H 6 O) 2.5 H
(CH 3 ) 2 CHCH(CH 3 )CH(CH 3 )CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—(CH 2 CH 2 O) 4 H
H 3 CCH 2 CH(CH 3 )CH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—(C 2 H 4 O) 7.5 H
H 3 CCH 2 C(CH 3 ) 2 CH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—(C 2 H 4 O) 7.5 H
(H 3 C) 2 CHCH(CH 3 )CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—(C 2 H 4 O) 7.5 CH 3
H 3 CCH 2 C(CH 3 ) 2 C(CH 3 )CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O(CH 2 H 4 O) 5 (C 3 H 6 O) 2.5 H
(H 3 C) 2 CHCH 2 CH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—(CH 2 CH 2 O) 5 H
(H 3 C) 3 CCH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH 2 CH 2 OH
(H 3 C) 2 CHCH(CH 3 )CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—(C 2 H 4 O) 7.5 H
(H 3 C) 3 CCH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O(CH 2 H 4 O) 5 (C 3 H 6 O) 2.5 H.
16. The adjuvant composition of claim 5 wherein the organosilicon surfactant of the general formula (I) is at least one quaternary ammonium-modified monosilyl compound selected from the group consisting of:
CR 6 R 7 R 8 (CR 9 R 10 ) m (CR 11 R 12 ) n —CHR 13 —CH 2 —Si(CH 3 ) 2 —
—Z
(H 3 C) 2 CHCH 2 CH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [CH 3 CH 2 COO − ]
(H 3 C) 2 CHCH(CH 3 )CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [CH 3 CH 2 COO − ]
H 3 CCH 2 C(CH 3 ) 2 C(CH 3 )CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [(CH 2 OH) 2 (CH 3 )C—COO − ]
(H 3 C) 3 CCH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [(CH 2 OH) 2 (CH 3 )C—COO − ]
(H 3 C) 3 CCH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH 2 CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 2 CH 2 OH [(CH 2 OH) 2 (CH 3 )C—COO − ]
(H 3 C) 2 CHCH 2 CH2—Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [CH 3 CH 2 COO − ]
(H 3 C) 2 CHCH(CH 3 )CH(CH 3 )CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [CH 2 (OH)CH 2 COO − ]
H 3 CCH 2 CH(CH 3 )CH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [CH 2 (OH)CH 2 COO − ]
H 3 CCH 2 C(CH 3 ) 2 CH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [CH 2 (OH)CH 2 COO − ]
(H 3 C) 2 CHCH 2 CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [CH 2 (OH)CH 2 CH 2 COO − ]
H 3 CC(CH 3 ) 2 CH 2 CH 2 CH 2 —CH 2 —Si(CH 3 ) 2 —
—CH 2 CH 2 CH 2 —O—CH(OH)CH 2 N + (CH 3 ) 2 —
CH 2 CH 3 [CH 2 (OH)CH 2 COO − ].
17. The adjuvant composition of claim 1 wherein organosilicon surfactant (I) is present therein at 1 to 99 weight percent of the total weight of lecithin and organisilicon surfactant (I).
18. The adjuvant composition of claim 1 further comprising at least one acidification agent.
19. The adjuvant composition of claim 1 further comprising at least one wetting agent.
20. The adjuvant composition of claim 1 further comprising at least one component selected from the group consisting of foam control agent, organic solvent and water.
21. The adjuvant composition of claim 1 further comprising at least one acidification agent and at least one wetting agent.
22. The adjuvant composition of claim 1 containing from 1 to 10 weight percent of organosilicon surfactant(s) (I) by total weight of lecithin and organosilicon surfactants (I).
23. An agrochemical formulation, comprising:
the adjuvant composition of claim 1 combined with a pesticide, a defoliant, or a plant nutrient; or combinations thereof.
24. An agrochemical formulation, comprising:
the adjuvant composition of claim 1 combined with a plant growth regulator, a fertilizer; or combinations thereof.
25. A method of controlling pests on a plant, providing nutrients to a plant, or defoliating a plant, comprising the step of spraying the agrochemical formulation of claim 23 onto the plant.
26. A method of plant growth regulation or plant fertilization, comprising the step of spraying the agrochemical formulation of claim 24 onto external tissue of the plant.