Foaming agent with high foaming ratio and preparation process thereof

Abstract

The invention relates to the technical field of foaming agents, and provides a high-foaming-ratio foaming agent and a preparation process thereof. The foaming agent with the high foaming ratio comprises the following components in parts by mass: 10-20 parts of a nonionic surfactant, 0.5-1.5 parts of phosphate, 4.2-12 parts of an auxiliary agent and 68-85.8 parts of a solvent, and the phosphate comprises organic phosphate and inorganic phosphate. According to the technical scheme, the problem that a nonionic foaming agent in the prior art is poor in foaming capacity is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of foaming agents, and specifically, to a high-foaming ratio foaming agent and its preparation process. Background Art

[0002] A foaming agent is a surface-active substance that dissolves in water, can reduce the surface tension of water, and generates a large amount of uniform and stable foam through the mechanical action of physical methods. It has very wide applications in industries such as cosmetics, pharmaceuticals, papermaking, building materials, and chemicals. Common foaming agents are divided into cationic foaming agents, anionic foaming agents, zwitterionic foaming agents, nonionic foaming agents, composite foaming agents, etc.

[0003] A nonionic foaming agent refers to a surfactant that exists in the form of molecules or micelles in an aqueous solution, mainly including ether type, ester type, ester-ether type, amide type, amine type, etc. Since nonionic foaming agents do not ionize in water, they have good resistance to calcium and magnesium and resistance to acids and alkalis. Compared with other types of foaming agents, although nonionic foaming agents are relatively stable in neutral, acidic, and weakly alkaline environments, their foaming ability is generally average. Summary of the Invention

[0004] The present invention provides a high-foaming ratio foaming agent and its preparation process, which solves the problem of poor foaming ability of nonionic foaming agents in the related art.

[0005] The technical solution of the present invention is as follows: A high-foaming ratio foaming agent, comprising the following components in parts by mass: 10 - 20 parts of nonionic surfactant, 0.5 - 1.5 parts of phosphate, 4.2 - 12 parts of auxiliary agent, and 58 - 95.8 parts of solvent, wherein the phosphate includes organic phosphate and inorganic phosphate.

[0006] In the present invention, the non-ionic surfactant can be any one or more conventional non-ionic surfactants in the art. For example, it can be of the ether type, ester type, ester-ether type, amide type, amine type, etc. Among them, the ether-type non-ionic surfactant can be fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyethylene glycol monoalkyl ether, benzylphenol polyoxyethylene ether, fatty acid polyoxyethylene ether, polypropylene glycol polyoxyethylene ether, etc.; the ester-type non-ionic surfactant can be fatty acid glyceride, sorbitan fatty acid ester, pentaerythritol fatty acid ester, propylene glycol fatty acid ester, citric acid fatty acid ester, tartaric acid fatty acid ester, glucose fatty acid ester, etc.; the ester-ether type non-ionic surfactant can be alkylphenol polyoxyethylene ether fatty acid ester, castor oil polyoxyethylene ester, polyoxyethylene sorbitan fatty acid ester, etc.; the amide-type non-ionic surfactant can be polyoxyethylene coconut oil amide, N-methyl coconut oil amide, N,N-bis(hydroxyethyl) coconut oil amide, etc.; the amine-type non-ionic surfactant can be coconut amine polyoxyethylene ether, N-alkyl diethanolamine, fatty amine polyoxyethylene ether, etc. Preferably, it is N,N-bis(hydroxyethyl) coconut oil amide.

[0007] As a further technical solution, the mass of the organic phosphate ≤ the mass of the inorganic phosphate.

[0008] In the present invention, it is optimized that the mass of the organic phosphate ≤ the mass of the inorganic phosphate. For example, the mass ratio of the organic phosphate to the inorganic phosphate can be 1:2, 1:2.5, 1:2.6, 1:2.8, 1:3.1, 1:3.4, 1:3.5, 1:3.6, 1:3.9, 1:4, 1:4.1, 1:4.2, 1:4.4, 1:4.5, 1:4.6, 1:4.77, 1:4.8, 1:4.85, 1:4.87, 1:4.9, 1:4.95, 1:5, 2:5, 3:7, 5:11, 5:16, 5:18, 5:23, 7:11, 7:16, 7:31, etc. This further improves the foaming ability and foam stability of the foaming agent.

[0009] As a further technical solution, the mass ratio of the organic phosphate to the inorganic phosphate is 1:2 to 5.

[0010] The present invention further defines that the mass ratio of the organic phosphate to the inorganic phosphate is 1:2 to 5. For example, it can be 1:2, 1:2.5, 1:2.6, 1:2.8, 1:3.1, 1:3.4, 1:3.5, 1:3.6, 1:3.9, 1:4, 1:4.1, 1:4.2, 1:4.4, 1:4.5, 1:4.6, 1:4.77, 1:4.8, 1:4.85, 1:4.87, 1:4.9, 1:4.95, 1:5, etc. This further improves the foaming ability and foam stability of the foaming agent.

[0011] In the present invention, the organic phosphate can be any one or more conventional organic phosphates in the art. For example, it can be sodium dodecyl phosphate, sodium 2-naphthyl phosphate, sodium deoxyadenosine phosphate, sodium 2-deoxyadenosine-3,5-cyclic phosphate, disodium 6-benzoyl-2-naphthyl phosphate, etc. Preferably, it is sodium 2-naphthyl phosphate.

[0012] In the present invention, the inorganic phosphate can be any one or more conventional inorganic phosphates in the art. For example, it can be metaphosphate, polyphosphate, etc. Among them, the metaphosphate can be sodium trimetaphosphate, sodium tetrametaphosphate, sodium hexametaphosphate, sodium polyphosphate, ammonium polyphosphate, potassium polyphosphate, etc.

[0013] As a further technical solution, the auxiliary agent includes at least one of the following features: foaming agent, foam-promoting agent, foam stabilizer, bactericide, essence.

[0014] In the present invention, the foaming agent can be any one or more conventional foaming agents in the art. For example, it can be rosin soap foaming agent, animal and plant protein foaming agent, etc. Preferably, it is animal and plant protein foaming agent. When proteins are hydrolyzed, the protein macromolecules with longer peptide chains become short-chain soluble polypeptides. After they are dissolved in water, they can form a colloidal solution with a certain viscosity. Due to the strong hydrophilic groups (carboxyl groups, hydroxyl groups, etc.), hydrophobic groups (long carbon chain hydrocarbon groups) and molecular asymmetry in the solution, the surface tension is reduced, promoting the formation of the interface. At the same time, the peptide chains of the polypeptides stretch on the interface and form a planar protection network through the interaction between peptide bonds, strengthening the interface, thus promoting the formation and stability of the foam.

[0015] In the present invention, the foam-promoting agent can be any one or more conventional foam-promoting agents in the art. Preferably, it is coconut oil fatty acid. The addition of coconut oil fatty acid can not only ensure the foaming efficiency and foam stability of the foaming agent, but also optimize the cell structure of the foam.

[0016] In the present invention, the foam stabilizer can be any one or more conventional foam stabilizers in the art. For example, it can be cocamidopropyl betaine, cellulose, etc. Preferably, it is hydroxymethyl cellulose. Since hydroxymethyl cellulose has a thickening effect, adding it to the foaming agent can increase the viscosity of the foaming agent solution. The increase in viscosity can slow down the drainage speed of the foam liquid film, keep the liquid film at a certain thickness, thus prolonging the life of the foam and improving the stability of the foam.

[0017] In the present invention, the bactericide can be any one or more conventional bactericides in the art. Preferably, it is bactericide V80. The addition of the bactericide can effectively inhibit the growth and reproduction of microorganisms such as bacteria and fungi, preventing the foaming agent from being contaminated and deteriorated during storage and use. In addition, the addition of the essence in the present invention can cover up the bad smell of the foaming agent itself.

[0018] As a further technical solution, the auxiliary agent comprises the following components in parts by mass: 1-2 parts of foaming agent, 1-3 parts of foaming aid, 2-5 parts of foam stabilizer, 0.1-1 part of bactericide, and 0.1-1 part of essence.

[0019] In the present invention, the auxiliary agent may, for example, comprise the following components in parts by mass: 1 part of foaming agent, 1.2 parts of foaming aid, 2 parts of foam stabilizer, 0.2 part of bactericide, and 0.5 part of essence; or 1.4 parts of foaming agent, 1 part of foaming aid, 2.2 parts of foam stabilizer, 0.1 part of bactericide, and 0.1 part of essence; or 1.5 parts of foaming agent, 1.4 parts of foaming aid, 2.6 parts of foam stabilizer, 0.6 part of bactericide, and 0.4 part of essence; or 1.8 parts of foaming agent, 1.6 parts of foaming aid, 3 parts of foam stabilizer, 0.7 part of bactericide, and 0.7 part of essence; or 2 parts of foaming agent, 3 parts of foaming aid, 2 parts of foam stabilizer, 0.1 part of bactericide, and 0.1 part of essence; or 1 part of foaming agent, 1 part of foaming aid, 5 parts of foam stabilizer, 1 part of bactericide, and 1 part of essence; or 1 part of foaming agent, 1 part of foaming aid, 2 parts of foam stabilizer, 0.1 part of bactericide, and 0.1 part of essence; or 2 parts of foaming agent, 3 parts of foaming aid, 5 parts of foam stabilizer, 1 part of bactericide, and 1 part of essence, etc.

[0020] As a further technical solution, the solvent comprises water and an alcohol solvent.

[0021] In the present invention, the solvent may be any one or more conventional solvents in the art. For example, it may be water and / or an alcohol solvent, preferably water and an alcohol solvent. The alcohol solvent may be any one or more conventional alcohol solvents in the art. For example, it may be ethanol, propanol, glycerol, propylene glycol, etc., preferably glycerol and propylene glycol.

[0022] As a further technical solution, the solvent comprises the following components in parts by mass: 5-10 parts of glycerol, 3-8 parts of propylene glycol, and 50-77.8 parts of water.

[0023] In the present invention, the solvent may comprise the following components in parts by mass: 5 parts of glycerol, 3 parts of propylene glycol, and 50 parts of water; or 5.5 parts of glycerol, 5 parts of propylene glycol, and 57 parts of water; or 5.8 parts of glycerol, 5.2 parts of propylene glycol, and 54 parts of water; or 7 parts of glycerol, 6 parts of propylene glycol, and 60 parts of water; or 8.5 parts of glycerol, 7.5 parts of propylene glycol, and 68 parts of water; or 10 parts of glycerol, 8 parts of propylene glycol, and 77.8 parts of water, etc.

[0024] As a carrier of the surfactant, the solvent helps to disperse evenly to form a stable system. The addition of the solvent can also adjust the viscosity of the foaming agent. Appropriate viscosity is conducive to the formation and stability of foam: because too low viscosity may cause the foam to break easily, while too high viscosity will affect the foaming efficiency.

[0025] The present invention also provides a preparation process for a high-foaming-ratio foaming agent for preparing the high-foaming-ratio foaming agent, which includes the following steps: After mixing a non-ionic surfactant and a solvent, the remaining components are added and mixed evenly to obtain the high-foaming-ratio foaming agent.

[0026] The working principle and beneficial effects of the present invention are as follows: The present invention provides a high-foaming-ratio foaming agent, which includes a non-ionic surfactant, a phosphate, an auxiliary agent, and a solvent. The phosphate includes an organic phosphate and an inorganic phosphate. When the two are compounded and added to the non-ionic foaming agent system as the phosphate, on the one hand, it can promote the generation of a large amount of foam, and on the other hand, the hydrophobic groups in the organic phosphate are densely arranged on the surface of the aqueous solution, making the bubble liquid film formed by the aqueous solution relatively dense and tough, not easy to break, ensuring that the formed foam exists stably for a long time, avoiding rapid rupture and dissipation, achieving the effects of improving the foaming ratio and foam stability of the non-ionic foaming agent, and laying a solid foundation for the wide application of the non-ionic foaming agent in many fields. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0028] Example 1 After mixing 10 parts of N,N-bis(hydroxyethyl)coconut amide with 3 parts of propylene glycol, 5 parts of glycerol, and 50 parts of deionized water, 0.2 part of sodium polyphosphate, 0.3 part of deoxyadenosine phosphate disodium, 1 part of plant protein foaming agent, 1 part of coconut oil fatty acid, 2 parts of carboxymethyl cellulose, 0.1 part of fungicide V80, and 0.1 part of essence are added, and stirred at 20 rpm for 30 min to mix evenly to obtain the foaming agent.

[0029] Example 2 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 0.5 part of sodium hexametaphosphate, 1 part of 2-deoxyadenosine-3,5-cyclic phosphate sodium salt, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence are added, and stirred at 40 rpm for 30 min to mix evenly to obtain the foaming agent.

[0030] Example 3 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 0.75 part of sodium hexametaphosphate, 0.75 part of 2-deoxyadenosine-3,5-cyclic phosphate sodium salt, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0031] Example 4 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 1 part of sodium hexametaphosphate, 0.5 part of 2-deoxyadenosine-3,5-cyclic phosphate sodium salt, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0032] Example 5 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 1.25 parts of sodium hexametaphosphate, 0.25 part of 2-deoxyadenosine-3,5-cyclic phosphate sodium salt, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0033] Example 6 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 1.4 parts of sodium hexametaphosphate, 0.1 part of 2-deoxyadenosine-3,5-cyclic phosphate sodium salt, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0034] Example 7 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 1 part of sodium hexametaphosphate, 0.5 part of 2-naphthyl phosphate sodium salt, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0035] Example 8 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 0.5 part of sodium hexametaphosphate, 1 part of sodium lauryl phosphate monoester, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0036] Comparative Example 1 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 1.5 parts of sodium hexametaphosphate, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0037] Comparative Example 2 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 1.5 parts of 2'-deoxyadenosine-3',5'-cyclic phosphate sodium salt, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0038] Comparative Example 3 After mixing 20 parts of N,N-bis(hydroxyethyl)coconut amide with 8 parts of propylene glycol, 10 parts of glycerol, and 77.8 parts of deionized water, 2 parts of plant protein foaming agent, 3 parts of coconut oil fatty acid, 5 parts of carboxymethyl cellulose, 1 part of fungicide V80, and 1 part of essence were added, and the mixture was stirred at 40 rpm for 30 min to be uniformly mixed to obtain a foaming agent.

[0039] The foaming agents obtained in Examples 1-8 and Comparative Examples 1-3 were diluted to an aqueous solution of 3 wt%, and the foam volume after 3 min of liquid flow stop was tested according to the method in GB / T 7462-1994, and the following performance tests were carried out: (1) Foaming ratio: The ratio of the foam volume generated by a certain volume of foaming agent solution to the foaming agent solution, that is, the volume of foam emitted by a unit volume of foaming agent solution. The formula is as follows: ER = V f / V1 In the formula: ER - foaming ratio; V f - foam volume; V1 - foaming agent solution volume.

[0040] (2) Half-life: The time (min) required for the volume of the liquid discharged from the foam to be half of the total volume of the foam before drainage.

[0041] The test results are recorded in Table 1.

[0042] Table 1 Foaming ratio and half-life of the foaming agent

[0043] It can be seen from Table 1 that the foaming agent provided by the present invention has a foaming ratio of more than 40.2 and a half-life of more than 94 min, and has high foaming ability and stability.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high expansion ratio foaming agent, characterized in that: The invention comprises the following components in parts by weight: 10 to 20 parts of a nonionic surfactant, 0.5 to 1.5 parts of a phosphate, 4.2 to 12 parts of an auxiliary agent, and 58 to 95.8 parts of a solvent, wherein the phosphate comprises an organic phosphate and an inorganic phosphate.

2. A high expansion ratio foaming agent according to claim 1, characterized in that: The mass of the organic phosphate is ≤ the mass of the inorganic phosphate.

3. A high expansion ratio foaming agent according to claim 2, characterized in that: The mass ratio of the organic phosphate to the inorganic phosphate is 1:2-5.

4. A high expansion ratio foaming agent according to claim 3, characterized in that: The organic phosphate includes one or more of monododecyl phosphate sodium salt, 2-naphthyl phosphate sodium salt, deoxyadenosine disodium phosphate, 2-deoxyadenosine-3,5-cyclophosphate sodium salt, and 6-benzoyl-2-naphthyl phosphate disodium salt.

5. A high expansion ratio foaming agent according to claim 3, characterized in that: The inorganic phosphate includes one or both of metaphosphate and polyphosphate.

6. A high expansion ratio foaming agent according to claim 1, characterized in that: The auxiliary agent includes at least one of the following characteristics: a foaming agent, an auxiliary foaming agent, a foam stabilizer, a bactericide, and a flavor.

7. A high expansion ratio foaming agent according to claim 6, characterized in that: The auxiliary agent includes the following components in parts by weight: 1-2 parts of a foaming agent, 1-3 parts of an auxiliary foaming agent, 2-5 parts of a foam stabilizer, 0.1-1 parts of a bactericide, and 0.1-1 parts of an essence.

8. A high expansion ratio foaming agent according to claim 1, characterized in that: The solvent includes water and alcohol solvents.

9. A high expansion ratio foaming agent according to claim 8, characterized in that: The alcohol solvents include glycerol and propylene glycol.

10. A process for preparing a high expansion ratio foaming agent, for preparing a high expansion ratio foaming agent as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps: mixing a nonionic surfactant and a solvent, adding other components and mixing them evenly to obtain a foaming agent with a high foaming ratio.

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