Foam stabilizer and preparation method thereof

Abstract

The invention discloses a foam stabilizer and a preparation method thereof. The foam stabilizer comprises 0.1-10 parts of cocamidopropyl dimethylamine oxide, 0.2-10 parts of tween 80, 5-20 parts of hexadecanoic acid, 0.1-10 parts of stearic acid, 2.9-15 parts of triethanolamine, 0.1-6 parts of sodium dimethyl benzene sulfonate, 0.1-6 parts of cocamidopropyl betaine, 0.1-6 pars of ammonium fatty alcohol polyoxyethylene ether sulfate, 0.1-2 parts of disodium ethylene diamine tetraacetate, 0.1-2 parts of 1-hydroxyethylidene-1,1-bis-phosphonic acid tetrasodium salt and water. The preparation method comprises the following steps: heating water, adding disodium ethylene diamine tetraacetate, 1-hydroxyethylidene-1,1-bis-phosphonic acid tetrasodium salt, ammonium fatty alcohol polyoxyethylene ether sulfate, cocamidopropyl betaine, cocamidopropyl dimethylamine oxide, sodium dimethyl benzene sulfonate and triethanolamine, stirring and dissolving to obtain a water phase; heating and melting tween80, hexadecanoic acid and stearic acid to obtain an oil phase; and rapidly mixing the water phase and the oil phase and stirring and cooling so as to obtain the foam stabilizer.

Description

technical field [0001] The invention relates to the technical field of chemical additives, in particular to a foam stabilizer. Background technique [0002] Due to the use of a large amount of harmful solvents in the production process of solvent-based polyurethane resin, it has been gradually replaced by water-based polyurethane coating with better environmental protection and safety in the production process of synthetic leather. In the production process of water-based polyurethane foam layer, it needs Foam stabilizers are added to increase the stability of the foam produced by the blowing agent. [0003] Application number is that the patent of CN200710067469.7 provides a kind of foam stabilizer and preparation method thereof, and this patent is made up of the component of following percentage by weight: ammonium stearate 20-35%; Sodium lauryl sulfate 1- 5%; coconut oil diethanolamide 1-10%; the balance is water. Its production process is as follows: add stearic acid, ...

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Problems solved by technology

Its disadvantages are: the production process requires high-speed homogeneous equipment for emulsification, and it needs to be equipped with a separate homogeneous equipment, and stearic acid is solid at 10-25 °C, and solid stearic acid is difficult to react with ammonia water, and incomplete reaction will lead to Small particles of stearic acid are suspended in the final product, which affects the use of the product. The final product must be filtered before it can be used

[0005] And when the products prepared by the technical solutions disclosed in the above two patents are used in water with high hardness, the ammonium stearate in the formula will generate water-insoluble fatty acid calcium soap and magnesium soap under the action of calcium and magnesium ions in the water , has a defoaming effect on the system, which is not conducive to foam stabilization

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