LOW FOAMING SURFACTANTS
The invention relates to detergent formulations comprising at least one secondary alcohol alkoxylate, and to the use of said at least one secondary alcohol alkoxylate as a surfactant in a detergent formulation to lower the foaming power thereof.
1 . A detergent formulation comprising at least one secondary alcohol alkoxylate, wherein said secondary alcohol comprises from 3 to 22 carbon atoms, endpoints included, and said secondary alcohol is alkoxylated with oxyalkylene units, chosen from oxyethylene (OE), oxypropylene (OP), and oxybutylene (OB), the total number of oxyalkylene units being between 2 and 100, endpoints included.
2 . The formulation as claimed in claim 1 , wherein the secondary alcohol has a weight-average molar mass of from 45 g mol −1 to 300 g mol −1 , endpoints included.
3 . The formulation as claimed in claim 1 , wherein the secondary alcohol comprises from 3 to 14 carbon atoms.
4 . The formulation as claimed in claim 1 , wherein said at least one secondary alcohol alkoxylate is chosen from secondary alcohol alkoxylates with narrow distribution.
5 . The formulation as claimed in claim 1 , wherein said at least one secondary alcohol alkoxylate comprises at least ethylene oxide units (OE), where said units may be distributed randomly, in alternation or in blocks.
6 . The formulation as claimed in claim 1 , wherein said at least one secondary alcohol alkoxylate is chosen from 2-octanol having ethoxy units, 2 octanol having ethoxy and propoxy units, 2-octanol having ethoxy and butoxy units, 2-octanol having propoxy units, 2-octanol having propoxy and butoxy units, and 2-octanol having butoxy units.
7 . The formulation as claimed in claim 1 , wherein said at least one secondary alcohol alkoxylate is chosen from 2-octanol 2-15 EO, 2-octanol 2-15 EO 1 PO, 2-octanol 2-15 EO 1-15 BO, 2-octanol 2-15 EO 1-15 PO, and 2 octanol 1-6 EO 1-15 PO.
8 . The formulation as claimed in a claim 1 , wherein the amount of secondary alcohol alkoxylate(s) is between 1% and 99% by weight of alkoxylate(s) relative to the total weight of the formulation.
9 . The formulation as claimed in claim 1 , further comprising one or more of the additives and fillers chosen from detergency agents, surfactants, fragrances, dyes, inert fillers, impregnating agents, aqueous, organic and aqueous-organic solvents chosen from water, alcohols, glycols and polyols, mineral oils, vegetable oils, waxes, and others, alone or in mixtures of two or more of them, in any proportions.
10 . A method of reducing foaming in a detergent formulation, comprising adding to the formulation at least one secondary alcohol alkoxylate as defined in claim 1 .
11 . The method as claimed in claim 10 , wherein said at least one secondary alcohol alkoxylate is chosen from 2-octanol 2-15 EO, 2-octanol 2-15 EO 1 PO, 2-octanol 2-15 EO 1-15 BO, 2-octanol 2-15 EO 1-15 PO, and 2 octanol 1-6 EO 1-15 PO.
12 . The method as claimed in claim 10 , wherein said at least one secondary alcohol alkoxylate is obtained by narrow range catalysis.
13 . The method as claimed in claim 10 , wherein the detergent formulation is for dishwashing, for multi-purpose cleaning, for hard surface cleaning, for garment cleaning, for cosmetic products, for cleaning sanitaryware, for washing automobiles in general, and for cleaning in place (CIP).