A surfactant composition comprising: (a) a surfactant material; (c) a polyethylene imine of the general formula —(CH
2
CH
2
NH)
n
—; and (d) an aromatic, monoethylenically-unsaturated carboxylic acid ester of the formula (I) where R
1
is selected from the group consisting of hydrogen, C
1
-C
16
alkyl, C
1
-C
16
alkoxy, aryl and substituted aryl, and R
2
is selected from the group consisting of aryl, substituted aryl and C
6
-C
16
alkyl; the materials (b)-(d) each having an odour value of 10,000 maximum. The problem of rancidity, commonly encountered when low-grade surfactant materials are used, especially in soaps, is considerably reduced.
Compositions
申请人:Vedantam Venkateswara Kumar
公开号:US20120122746A1
公开(公告)日:2012-05-17
A surfactant composition comprising:
(a) a surfactant material;
(c) a polyethylene imine of the general formula —(CH
2
CH
2
NH)
n
—; and
(d) an aromatic, monoethylenically-unsaturated carboxylic acid ester of the formula
where R
1
is selected from the group consisting of hydrogen, C
1
-C
16
alkyl, C
1
-C
16
alkoxy, aryl and substituted aryl, and R
2
is selected from the group consisting of aryl, substituted aryl and C
6
-C
16
alkyl; the materials (b)-(d) each having an odour value of 10,000 maximum.
The problem of rancidity, commonly encountered when low-grade surfactant materials are used, especially in soaps, is considerably reduced.
Linear Selective Hydroformylation of 2‐Arylpropenes Using Water‐Soluble Rh‐PNP Complex: Straightforward Access to 3‐Aryl‐Butyraldehydes
Rh-catalyzed hydroformylation of 2-arylpropenes becomes available using an unprecedented PNP ligand. The protocol provides a powerful strategy to access a wide library of 3-aryl-butyraldehydes with excellent selectivity and scalability. A concise total synthesis of rac-ar-turmerone is also pursued to demonstrate the practical nature of this protocol.