Synthesis of a branched unsaturated compound by means of cross metathesis
First Claim
1. A process for synthesizing a branched unsaturated fatty compound of formula III:
- A-CH═
CB′
—
B wherein;
A is a radical consisting of an linear alkyl chain, comprising from 1 to 20 carbon atoms and comprising an acid, ester of a monoalcohol or of a polyol or nitrile end function;
B′
is H or an alkyl chain comprising from 1 to 10 carbon atoms; and
B is;
if B′
is an alkyl chain, B is an alkyl chain comprising from 1 to 11 carbon atoms; and
if B′
is H, B is an alkyl chain comprising from 3 to 11 carbon atoms bearing at least one branched alkyl radical of formula CnH2n+1 with n in the range from 1 to 5, said process comprising;
performing metathesis in the presence of a metathesis catalyst between;
(a) a linear unsaturated fatty compound of formula I R—
(CH2)a-[(CH═
CH)—
(CH2)]b—
(CH2)c—
R′
is wherein R′
is a radical —
COOH, COOR1 or —
CN, R1 being a monoalcohol or a polyol residue R is H or an acid, monoalcohol ester or nitrile function, and a, b, c are integers such that 0≦
a≦
11;
1≦
b≦
6;
2≦
c≦
12, the sum a+3*b+c+1 being in the range from 8 to 36; and
(b) a branched olefin II comprising from 4 to 23 carbon atoms, wherein the main chain comprises at least one branching of formula CnH2n+1 with n in the range from 1 to 5 when B′
is H.
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Accused Products
Abstract
The invention relates to a method for the synthesis of a branched unsaturated fatty compound, said method comprising the metathesis, in the presence of a metathesis catalyst, of a linear unsaturated fatty compound and a branched olefin. The branched unsaturated fatty compound is used in particular for the production of at least one of the following products: dielectric fluids, specialty surfactants, emulsifiers, frictions agents, antistatic additives, antifogging additives, mould release agents, pigment dispersants, high-performance lubricants, waxes and wax emulsifiers, polymer conversion additives, PVC stabilizing agents, inks, resins, paints, varnishes, solvents, lipsticks, creams for the skin, deodorants, particularly stick deodorants, hair dyes, shampoos and other liquid soaps, shaving foam, laundry detergents, cleaning agents, fabric softeners, and mixtures of same.
38 Citations
25 Claims
-
1. A process for synthesizing a branched unsaturated fatty compound of formula III:
- A-CH═
CB′
—
B wherein;A is a radical consisting of an linear alkyl chain, comprising from 1 to 20 carbon atoms and comprising an acid, ester of a monoalcohol or of a polyol or nitrile end function; B′
is H or an alkyl chain comprising from 1 to 10 carbon atoms; andB is; if B′
is an alkyl chain, B is an alkyl chain comprising from 1 to 11 carbon atoms; andif B′
is H, B is an alkyl chain comprising from 3 to 11 carbon atoms bearing at least one branched alkyl radical of formula CnH2n+1 with n in the range from 1 to 5, said process comprising;performing metathesis in the presence of a metathesis catalyst between; (a) a linear unsaturated fatty compound of formula I R—
(CH2)a-[(CH═
CH)—
(CH2)]b—
(CH2)c—
R′
is wherein R′
is a radical —
COOH, COOR1 or —
CN, R1 being a monoalcohol or a polyol residue R is H or an acid, monoalcohol ester or nitrile function, and a, b, c are integers such that 0≦
a≦
11;
1≦
b≦
6;
2≦
c≦
12, the sum a+3*b+c+1 being in the range from 8 to 36; and(b) a branched olefin II comprising from 4 to 23 carbon atoms, wherein the main chain comprises at least one branching of formula CnH2n+1 with n in the range from 1 to 5 when B′
is H.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- A-CH═
Specification