Organic non ionic surfactants
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non ionic surfactants
It is a surfactant agent base of sugar esters from fatty acids of animal fat or vegetable oil with
Chemical structure R - COO-C12H21O11
R = corresponding radical to the fatty acids
The length of the carbon atoms as well as the degree of saturation of this radical influences the final properties of the surfactant.
In this way can be used this principal products as source of fat matter:
Animal fatty acids
Vegetable oil fatty acids
Active matter : 80 %
Water: 20 %
Ionic character: non ionic-anionic produced by the molecule of sugar esters and mono and di- glycerides free respectively.
Solubility: soluble in an ethyl alcohol and organic acid of low molecular weight. Form a turbid solution in cold water, the one which is clarified with hot water. The sugar esters form a dispersion . Those of a fatty unsaturated radicals are insoluble in mineral oils and benzine hydrocarbons forming a partial emulsification. Those of saturated fat radical are soluble in mineral oils.
Stability: Between 5 and 10 pH
Superficial tension: reduction of the superficial tension of the water to 35 Dynes /cm at 25: Celsius with a concentration of 1.5%.
Harris Test : Dispersion Number = 10 to 20
Nessler Test: % Dispersion = less than 10
Emulsify conditions: form an emulsion with mineral oils, alcohols and aromatic solvents
PHYSICAL CHEMICAL PROPERTIES
pH ( 1%) 8
HLB 12 to 14
Saponification Number 40-60
Iodine Number 38 -130 ( depends on fat matter)
Solubility In hot or cold water, forming solutions of the soap type.
200 Kgs Net Weight in Metallic Drums
Store in a dry and cool location. SURFAC 80 has a shelf life of one year
USE OF SURFAC 80 IN THE PREPARATION OF POWDERED OR LIQUID DETERGENTS
Sucrose esters are obtained products of the chemical reaction among fatty acids with the sucrose, constituting a surface active agent . Among their characteristics we can mention:
Good properties as surface active agent
Minimum formation of foam
Excellent dispersion of calcareous soaps
The intrinsic superficial action of each sucrose esters will depend on the fatty acids ester and of the conditions settled down in the chemical reaction.
These products are identified as mono-esters of the fatty acids of the animal fat with sucrose in the preparation of powdered or liquid detergents.
Their employment is guided in the following specific functions:
Low-foam in the formulations of powders or liquid detergents
Lowers the viscosity of the slurry before their blown in the spray-dried
Surface active agent of character nonionic-anionic
To these functions the sucrose esters sinks the good detergent character for what form part of the active matter. This is already verified with the experiences carried out with the alquil polyglucosides or sucrose esters taken place.
1. SURFAC 80 as antifoam agent
SURFAC 80 derived of the fatty acids of animal fat they possess a minimum formation of foam, besides working as agent of control of the same one.
Laboratory Tests formulating powders of washing with 10, 15 and 20% of LAS they were contrasted with samples that controlled respectively in dose of 2.5,3.5 and 4.5% of SURFAC 80 as preservative. In any case change the content of LAS.
In the samples, to dose of 2 gr/litro of the powder detergent, a height of foam initial of 30% of the total height is reached with the samples that only contain LAS.
These tests depend on the preservatives that are included in the formulation.
2. SURFAC 80 as reducers of viscosity
The current tendency of achieving concentrated powdered detergents where the main active matter are LAS, makes necessary to have auxiliary chemical products of the process that allow a bigger percentage of solids in the pasta of the asset, without altering the productivity neither the variables of the process significantly.
The participation of auxiliary surface agents in the slurry preparation for their later one blown in the spray dried, just as the Sodium Toluene Sulphonate or the Sodium Xilene Sulphonate , it has wide antecedents in the industry with the purpose of decrease the viscosity of the slurry.
The Sucrose esters of the fatty acids of animal fat has proven effectiveness in the reduction of viscosity in such diverse chemical processes as:
Evaporation, and crystallization of syrups in the Sugar Industry
Evaporation of black liquor in plants of Cellulose & Paper
The SURFAC 80 can be dosed in the pasta of the asset in such a way of achieving a concentration of 70% in solids, working with carbonate of sodium to 30% and LAS equivalent one. It decreases the viscosity between a 30 and 40%, it improves the blended one and the vent is facilitated.
Recommended dose: 1 to 2% of the SURFAC 80 on the powdered detergent.
3. SURFAC 80 as surface active agent
For each detergent raw material there is a limit of active material, and the method of production of the powder detergent also limits its active matter.
In powdered detergent SURFAC 80 is used as co-surfactant with alkyl aryl sulphonates such as nonionic surface agent in the active matter.
The incorporation of SURFAC 80 poses a special characteristic, not only is an active matter but also produced low foaming in the powder formulation
In the different methods of producing powder, the SURFAC 80 can be incorporated directly into a powder, slurry, etc. in a range of 10-25% of the total powder formulations.
The choice of active ingredient depends on the requirments of the finished liquid.
Light-duty liquid detergent can be based on alkyl aryl sulphonic acid, alcohol sulphates, non ionic such as
SURFAC 80, or combinations of two or more of these materials.
In a liquid detergent the SURFAC 80 is incorporated in a range of 10-25% in the formulation.