PROCESS FOR THE PREPARATION OF ALKOXYLATES COMPOSITIONS
A mixture of two alkoxylates surfactants, one being an aryl aliphatic carbinol alkoxylate, the other one being a dialiphatic carbinol alkoxylate, said mixture being useful for stabilizing emulsions and dispersions used in agricultural or pharmaceutical formulations. The alkoxylates surfactants may serve as substitutes for nonylphenol ethoxylates (NPE) and tristyrylphenol ethoxylates (TSE).
1 . A mixture (I) comprising:
an aryl aliphatic carbinol alkoxylate of formula (A):
where:
R is an aliphatic radical having from 4 to 24 carbon atoms;
Z is an alkoxylate unit of general formula —(Y—O)— where Y is a divalent hydrocarbon radical containing from 2 to 6 carbon atoms and 50≥m1≥2;
Ar is an aryl radical;
a dialiphatic carbinol alkoxylate of formula (B):
where
R is the same as above;
Z′ is an alkoxylate unit of general formula —(Y′—O)— where Y′ is a divalent hydrocarbon radical containing from 2 to 6 carbon atoms where Z′ can be the same as Z or can be different from Z and 50≥m2≥2.
2 . The mixture (I) according to claim 1 , wherein the aliphatic radical is an alkyl radical.
3 . The mixture (I) according to claim 1 , wherein:
the polyalkoxylated chain —Z m1 has formula (C) where 0≤x≤20; 0≤y≤20 and 2 23 x+y≤40;
the polyalkoxylated chain —Z′ m2 — has formula (C′) where 0≤x′≤20; 0≤y′≤20 and 2≤x′+y′≤40;
4 . The mixture (I) according to claim 1 , wherein the weight of the dialiphatic carbinol alkoxylate of formula (B) based on the total weight of the aryl aliphatic carbinol alkoxylate of formula (A) and of the dialiphatic carbinol alkoxylate of formula (B), ranges from 2% to 20%.
5 . The mixture (I) according to claim 1 , wherein the total weight of the aryl aliphatic carbinol alkoxylate of formula (A) and of the dialiphatic carbinol alkoxylate of formula (B) based on the total weight of the mixture (I) is of at least 90%.
6 . A mixture (II) comprising:
an aryl aliphatic carbinol of formula (D):
where
R is an aliphatic radical having from 4 to 24 carbon atoms;
Ar is an aryl radical;
a dialiphatic carbinol of formula (E):
where R is the same as defined above.
7 . The mixture (II) according to claim 6 , wherein the aliphatic radical is an alkyl radical.
8 . The mixture (II) according to claim 6 , wherein the weight of the dialiphatic carbinol of formula (E) based on the total weight of the aryl aliphatic carbinol of formula (D) and of the dialiphatic carbinol of formula (E), ranges from 2% to 20%.
9 . The mixture (II) according to claim 6 , wherein the total weight of the aryl aliphatic carbinol of formula (D) and of the dialiphatic carbinol of formula (E) based on the total weight of the mixture (II) is of at least 90%.
10 . A process for the preparation of mixture (I) as defined in claim 1 , comprising the steps of:
a) providing a mixture (II) comprising:
an aryl aliphatic carbinol of formula (D);
where
R is an aliphatic radical having from 4 to 24 carbon atoms;
Ar is an aryl radical;
a dialiphatic carbinol of formula (E):
where R is the same as defined above;
b) subjecting mixture (II) to an alkoxylation step to form mixture (I).
11 . A process for the preparation of mixture (I) as defined in claim 1 , comprising the steps of:
a) providing a mixture (III) comprising a dialiphatic ketone of formula (F)
and an aryl aliphatic ketone of formula (G)
where R is an aliphatic radical having from 4 to 24 carbon atoms and Ar is an aryl radical;
b) subjecting mixture (III) to a hydrogenation step to form a mixture (II) comprising:
an aryl aliphatic carbinol of formula (D):
where R and Ar are the same as defined above;
a dialiphatic carbinol of formula (E):
where R is the same as defined above;
c) subjecting mixture (II) to an alkoxylation step to form mixture (I).
12 . A process for the preparation of mixture (I) as defined in claim 1 , comprising the steps of:
a) performing a catalytic decarboxylative cross-ketonisation of aryl- and aliphatic carboxylic acids comprising the steps of:
i) providing a mixture containing:
an aryl carboxylic acid of formula
where Ar is an aryl radical;
an aliphatic carboxylic acid of formula
where R is an aliphatic radical having from 4 to 24 carbon atoms the same as defined above;
a catalyst;
ii) heating the mixture at a temperature sufficient to form mixture (III) comprising a dialiphatic ketone of formula (F)
where R is the same as defined above
and an aryl aliphatic ketone of formula (G)
where R and Ar are the same as defined above;
b) subjecting mixture (III) to a hydrogenation step to form a mixture (II) comprising:
an aryl aliphatic carbinol of formula (D):
where R and Ar are the same as defined above;
a dialiphatic carbinol of formula (E):
where R is the same as defined above;
c) subjecting mixture (II) to an alkoxylation step to form mixture (I).
13 . The process of claim 12 , wherein step a) of performing the catalytic decarboxylative cross-ketonisation of aryl- and aliphatic carboxylic acids comprises the steps of:
i) providing a mixture containing:
the aryl carboxylic acid;
the aliphatic carboxylic acid;
a metal-containing compound;
in which the number of moles of the metal in the mixture is at least equal to 90% of the sum of the number of moles of aryl carboxylic acid and the number of moles of aliphatic carboxylic acid divided by the valency of the metal
said mixture being free of any added solvent;
ii) heating the mixture at a temperature sufficient to form metal carboxylates;
iii) further heating the mixture at a temperature sufficient to form the dialiphatic ketone of formula (F) and the aryl aliphatic ketone of formula (G);
iv) adding to the reaction mixture of step iii):
aryl carboxylic acid in an amount which corresponds substantially to the amount of aryl carboxylic acid consumed during the formation of the aryl aliphatic ketone in step iii);
aliphatic carboxylic acid in an amount which corresponds substantially to the amount of aliphatic carboxylic acid consumed during the formation of the aryl aliphatic ketone and the dialiphatic ketone in step iii);
maintaining the mixture at a temperature sufficient to continue forming the dialiphatic ketone and the aryl aliphatic ketone;
v) optionally repeating step iv).
14 . A process for the preparation of mixture (II) as defined in claim 6 , comprising the steps of:
a) providing a mixture (III) comprising a dialiphatic ketone of formula (F)
where R is an aliphatic radical having from 4 to 24 carbon atoms
and an aryl aliphatic ketone of formula (G)
where R is the same as defined above and Ar is an aryl radical;
b) subjecting the mixture to a hydrogenation step to form mixture (II).
15 . A process for the preparation of mixture (II) as defined in claim 6 , comprising the steps of:
a) performing a catalytic decarboxylative cross-ketonisation of aryl- and aliphatic carboxylic acids comprising the steps of:
i) providing a mixture containing:
an aryl carboxylic acid of formula
where Ar is an aryl radical;
an aliphatic carboxylic acid of formula
where R is an aliphatic radical having from 4 to 24 carbon atoms;
a catalyst;
ii) heating the mixture at a temperature sufficient to form mixture (III) comprising a dialiphatic ketone of formula (F)
where R is the same as defined above
and an aryl aliphatic ketone of formula (G)
where R and Ar are the same as defined above;
b) subjecting mixture (III) comprising the dialiphatic ketone and the aryl aliphatic ketone to a hydrogenation step to form mixture (II).
16 . The process of claim 15 , wherein step (a) of performing the catalytic decarboxylative cross-ketonisation of aryl- and aliphatic carboxylic acids comprises the steps of:
i) providing a mixture containing:
the aryl carboxylic acid;
the aliphatic carboxylic acid;
a metal-containing compound;
in which the number of moles of the metal in the mixture is at least equal to 90% of the sum of the number of moles of aryl carboxylic acid and the number of moles of aliphatic carboxylic acid divided by the valency of the metal
said mixture being free of any added solvent;
ii) heating the mixture at a temperature sufficient to form metal carboxylates;
iii) further heating the mixture at a temperature sufficient to form the dialiphatic ketone of formula (F) and the aryl aliphatic ketone of formula (G);
iv) adding to the reaction mixture of step iii):
aryl carboxylic acid in an amount which corresponds substantially to the amount of aryl carboxylic acid consumed during the formation of the aryl aliphatic ketone in step iii);
aliphatic carboxylic acid in an amount which corresponds substantially to the amount of aliphatic carboxylic acid consumed during the formation of the aryl aliphatic ketone and the dialiphatic ketone in step iii);
maintaining the mixture at a temperature sufficient to continue forming the dialiphatic ketone and the aryl aliphatic ketone;
v) optionally repeating step iv).
17 . The process according to claim 14 , comprising the step of adding a strong base in mixture (III) either at the beginning or during the hydrogenation.
18 . A phytosanitary or a pharmaceutical composition comprising:
one active ingredient having acaricidal, insecticidal, fungicidal, herbicidal or pharmaceutical properties;
mixture (I) as defined in claim 1 .
19 . The composition of claim 18 , wherein the composition is in the form of an emulsifiable concentrate comprising:
the active ingredient;
a solvent;
mixture (I);
or
in the form of a microemulsion comprising:
the active ingredient
water;
a co-solvent
mixture (I);
or
in the form of an emulsion in water comprising:
the active ingredient
water
a co-solvent
mixture (I);
or
in the form of a suspension concentrate comprising:
the active ingredient
water
optionally a wetting agent
at least one additive selected form an antifreeze agent, an anti-foam agent, an antibacterial agent, a thickener;
mixture (I).
20 .- 23 . (canceled)
24 . The composition according to claim 18 , further comprising an anionic surfactant as a co-surfactant.
25 . (canceled)
26 . The composition according to claim 18 , wherein the weight of the dialiphatic carbinol alkoxylate of formula (B) based on the total weight of the aryl aliphatic carbinol alkoxylate of formula (A) and of the dialiphatic carbinol alkoxylate of formula (B), ranges from 2% to 20%.