JP6138902B2 - Flame retardant composition and its application - Google Patents

Description

  The present invention relates to a flame retardant composition, and particularly to a flame retardant composition having good dispersibility and stability over time.

  Since the cloth material itself belongs to a flammable material, when manufacturing a cloth material having a flame retardant effect, the fire resistance of the cloth material can be improved by adding a flame retardant. The flame retardant is generally in the form of a powder and may be added to a liquid flame retardant composition containing a solvent in order to improve the dispersibility of the flame retardant and easily use it when applied.

  However, a composition produced only with a solvent (for example, water) is disadvantageous for the dispersion of the powdered flame retardant. In order to improve the dispersion effect, currently known technical means perform wet wrapping on a powdered flame retardant-containing composition, and the average particle size of the solid content of the flame retardant composition reaches the order of microns. A flame retardant composition is produced.

  As another conventional method, the dispersibility of the flame retardant composition is improved by adding a surfactant to the flame retardant composition and then polishing the solid content of the flame retardant composition. The surfactants used are mostly low molecular weight surfactants and are generally anionic surfactants or a combination of anionic and nonionic surfactants.

  However, since the surfactant used has a low molecular weight and poor dispersibility, the flame retardant composition produced by the conventional technology also has the phenomenon of precipitation and layering, especially when stored at a low temperature or for a long time. After standing, upper and lower layers of different active ingredients are likely to be formed, process conditions become unstable (for example, the flame retardant content is not constant), and further affects the quality of the product.

  Therefore, currently, there is a demand for a flame retardant composition that solves the above-mentioned various problems and gives the flame retardant composition good dispersibility and stability over time.

  Therefore, in one aspect of the present invention, there is provided a flame retardant composition containing surfactants having different molecular weights, having a solid content with a specific average particle size, and having good dispersibility and stability over time.

  In another aspect of the present invention, a flame retardant layer formed from the flame retardant composition is provided.

  In another aspect of the present invention, a flame retardant cloth material including the flame retardant layer is provided.

（式（Ｉ）において、Ａｒが同一又は異なるアリール基を示し、Ｒが同一又は異なり、水素原子、低級アルキル基、シクロアルキル基、アリール基、アリル基又はアラルキル基を示し、又は各Ｒが互に結合し環を形成する）を備える難燃組成物を提供する。 According to one aspect of the present invention, a flame retardant (A) having a structure represented by formula (I), a dispersant mixture (B), a dispersion stabilizer (C), an antifreeze agent (D), A foam (E), a solvent (F),

(In the formula (I), Ar represents the same or different aryl group, R represents the same or different, represents a hydrogen atom, a lower alkyl group, a cycloalkyl group, an aryl group, an allyl group or an aralkyl group, or each R represents A flame retardant composition is provided.

  The dispersant mixture (B) is composed of a low molecular weight surfactant (B-1) having a molecular weight or first weight average molecular weight of less than 1500, and a high molecular weight surfactant having a second weight average molecular weight of 5000 to 20000. (B-2).

  The amount of the low molecular weight surfactant (B-1) used is 2.5 to 25 parts by weight with respect to the amount of the flame retardant (A) used is 100 parts by weight, and the high molecular weight surfactant (B-2) is used. ) Is used in an amount of 1.3 to 15 parts by weight, and the dispersion stabilizer (C) is used in an amount of 0.1 to 2.5 parts by weight, and the antifreeze (D) is used. Is 2.5 to 20 parts by weight, the defoamer (E) is used in an amount of 0.3 to 7.5 parts by weight, and the solvent (F) is used in an amount of 80 to 143 parts by weight. 0.5 parts by weight, and the solid content of the flame retardant composition has an average particle size of 1 μm to 5 μm.

  According to one embodiment of the present invention, the ratio of the molecular weight or the first weight average molecular weight of the low molecular weight surfactant (B-1) to the second weight average molecular weight of the high molecular weight surfactant (B-2). Is 0.05 to 0.21.

  According to one embodiment of the present invention, the amount of the low molecular weight surfactant (B-1) used is 2.5 to 12.5 parts by weight with respect to 100 parts by weight of the flame retardant (A). The amount of the high molecular weight surfactant (B-2) used is 2.5 to 10 parts by weight, and the amount of the dispersion stabilizer (C) used is 0.3 to 1.3 parts by weight. Yes, the amount of antifreeze (D) used is 7.5 to 15 parts by weight, the amount of antifoaming agent (E) used is 1.3 to 2.5 parts by weight, and the solvent ( The amount of F) used is 100 to 125 parts by weight.

  According to an embodiment of the present invention, the second weight average molecular weight is 6000-20000.

  According to one embodiment of the present invention, the low molecular weight surfactant (B-1) is an anionic low molecular weight surfactant, a cationic low molecular weight surfactant, a nonionic low molecular weight surfactant or an amphoteric low surfactant. Contains molecular weight surfactant.

  According to one embodiment of the present invention, the high molecular weight surfactant (B-2) comprises an anionic high molecular weight surfactant or a cationic high molecular weight surfactant.

  According to one embodiment of the present invention, the anionic high molecular weight surfactant comprises polyacrylic acid sodium salt, polymethylacrylic acid sodium salt, maleic acid copolymer sodium salt or combinations thereof.

  According to one embodiment of the present invention, the cationic high molecular weight surfactant comprises polyacrylamide, polymethylacrylamide or a combination thereof.

  According to another aspect of the present invention, there is provided a flame retardant layer comprising the flame retardant composition coated, immersed or jetted on a substrate.

  According to still another aspect of the present invention, there is provided a flame retardant cloth material including the flame retardant layer and a base fabric.

  The flame retardant composition of the present invention has good dispersibility and stability over time by combining a high and low molecular weight surfactant and the amount of use thereof, and an average particle size of solid content of 1 μm to 5 μm. It is possible to improve the precipitation phenomenon caused by leaving the flame retardant composition for a long time.

[Flame retardant composition]
The flame retardant composition of the present invention comprises a flame retardant (A), a dispersant mixture (B), a dispersion stabilizer (C), an antifreeze agent (D), an antifoaming agent (E), a solvent ( F), and the solid content in the flame retardant composition has an average particle size of 1 μm to 5 μm. This will be described in detail below.

（式（Ｉ）において、Ａｒが同一又は異なるアリール基を示し、Ｒが同一又は異なり、水素原子、低級アルキル基、シクロアルキル基、アリール基、アリル基又はアラルキル基を示し、又は各Ｒが互に結合し、リン原子上の窒素原子と共に環を形成する）。 [Flame Retardant (A)]
The flame retardant (A) has a structure represented by the formula (I)

(In the formula (I), Ar represents the same or different aryl group, R represents the same or different, represents a hydrogen atom, a lower alkyl group, a cycloalkyl group, an aryl group, an allyl group or an aralkyl group, or each R represents To form a ring with the nitrogen atom on the phosphorus atom).

  Specifically, Ar may be an aryl group having 6 to 18 carbon atoms such as a phenyl group, a naphthyl group, or a biphenyl group, but is preferably a phenyl group. The aryl group has one or more lower alkyl groups having 1 to 4 carbon atoms, and preferably 1 to 3 lower alkyl groups having 1 to 4 carbon atoms. Specific examples of the aryl group having a lower alkyl group may include a tolyl group, a xylyl group, or a methylnaphthyl group.

  In the functional group represented by R, the lower alkyl group may be, for example, an alkyl group having 1 to 4 carbon atoms such as a methyl group, an ethyl group, a propyl group, or a butyl group. The alkyl group having 3 or more carbon atoms may be linear or branched. The cycloalkyl group may be, for example, a cyclopentyl group, a cyclohexyl group, or a cycloheptyl group, but a cyclohexyl group is preferable. The aryl group may be an aryl group having 6 to 18 carbon atoms, such as a phenyl group, a naphthyl group, or a biphenyl group, but is preferably a phenyl group. The aryl group has one or more, preferably 1 to 3, lower alkyl groups having 1 to 4 carbon atoms such as a tolyl group, a xylyl group, and a methylnaphthyl group. Moreover, as an aralkyl group, a benzyl group or a phenethyl group is preferable, and the benzene ring has one or more, preferably 1 to 3, lower alkyl groups having 1 to 4 carbon atoms.

  As a specific example of the flame retardant (A), aniline diphenyl phosphonate (product name: DPPP, manufactured by Watsuka Chemical Co., Ltd.) may be used.

  It should be noted that the content of the flame retardant (A) in the flame retardant composition may be 75 to 125 parts by weight. If the content of the flame retardant (A) is too low, the flame retardant effect becomes poor. If the content of the flame retardant (A) is too high, dispersibility becomes poor.

[Dispersant mixture (B)]
In the present invention, the dispersant mixture (B) includes a low molecular weight surfactant (B-1) and a high molecular weight surfactant (B-2). This will be described in detail below.

[Low molecular weight surfactant (B-1)]
The molecular weight or first weight average molecular weight of the low molecular weight surfactant (B-1) may be less than 1500. Preferably, the molecular weight or the first weight average molecular weight of the low molecular weight surfactant (B-1) may be smaller than 1300.

  The low molecular weight surfactant (B-1) includes an anionic low molecular weight surfactant, a cationic low molecular weight surfactant, a nonionic low molecular weight surfactant or an amphoteric low molecular weight surfactant.

  Examples of the anionic low molecular weight surfactant include polyoxyethylene styrene aryl ether sulfonate, polyoxyethylene polyalkyl aryl ether sulfonate, alkylbenzene sulfonate, alkyl naphthalene sulfonate, and higher alcohol sulfate. , Higher alkyl ether sulfate esters, alkyl phosphate esters, or combinations thereof, but are not limited thereto. As a specific example, for example, there is a product of model number SINOGATE 707SF manufactured by Chunichi Synthetic Chemical Co., Ltd., or a product of product name SINOGATE 1105SF or SINOGEN DBS-Na.

  Examples of the higher alcohol sulfates include fatty alcohol sulfates having 8 to 18 carbon atoms. The higher alkyl ether sulfate ester salt may be, for example, a sulfate ester salt of a fatty alcohol ethylene oxide (1 to 10 mol) adduct having 8 to 18 carbon atoms.

  Said cationic low molecular weight surfactants may include, but are not limited to, aliphatic amine salts, ethanolamine salts, polyethylene polyamine salts, quaternary ammonium salts or combinations thereof. Specific examples of the quaternary ammonium salt include, for example, an alkyl dimethylphenyl quaternary ammonium salt, an alkyl trimethyl quaternary ammonium salt, an alkyl dimethyl ammonium salt, an alkyl dimethyl quaternary ammonium salt, and an alkyl dimethyl quaternary ammonium salt. There are dialkyl dimethyl quaternary ammonium salt) or picoline quaternary ammonium salt.

  The above-mentioned nonionic low molecular weight surfactants include polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene styrene aryl ether, polyoxyethylene fatty acid ester (polyoxyethylene ether). ester), sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether (polyoxyet) may include polyoxyethylene fatty acid amides, condensates with amides or acids, higher alcohol alkylene oxide adducts, fatty acid alkylene oxide adducts, alkylphenol alkylene oxide adducts, or combinations thereof. It is not limited. For example, a product with a trade name of SINOPOL 1110 can be mentioned.

  The amphoteric low molecular weight surfactant may include, but is not limited to, betaine type, amino acid type, or a combination thereof.

  The amount of the low molecular weight surfactant (B-1) used may be 2.5 to 25 parts by weight, preferably 2.5 parts by weight based on 100 parts by weight of the flame retardant (A). Parts to 12.5 parts by weight.

  If the low-molecular weight surfactant (B-1) is not included in the flame retardant composition of the present invention, the dispersibility of the flame retardant composition is poor and the layers are easily separated. When the amount of the low molecular weight surfactant (B-1) used exceeds 25 parts by weight, the dispersion effect is also poor.

[High molecular weight surfactant (B-2)]
The high molecular weight surfactant (B-2) may contain an anionic high molecular weight surfactant or a cationic high molecular weight surfactant.

  The anionic high molecular weight surfactant (B-2) includes polyacrylic acid sodium salt, polymethylacrylic acid sodium salt, maleic acid copolymer sodium salt or a combination thereof. As a specific example, there is a product of model number H14N (manufactured by Nippon Emulsifier Co., Ltd.).

  The cationic high molecular weight surfactant includes polyacrylamide, polymethylacrylamide or a combination thereof.

  The second weight average molecular weight of the high molecular weight surfactant (B-2) is 5000 to 20000, preferably 6000 to 20000. It should be noted that in the present invention, in order to improve the dispersibility of the flame retardant composition, intercalation is performed from the high molecular weight surfactant (B-2) in the above molecular weight range and other components in the flame retardant composition. To form a steric hindrance effect.

  When the second average molecular weight of the high molecular weight surfactant (B-2) is less than 5000, sufficient steric hindrance cannot be provided, and thus the dispersibility of the flame retardant composition is poor. When the second average molecular weight of the high molecular weight surfactant (B-2) exceeds 20000, the steric hindrance effect is too large to form an intercalation with other components of the flame retardant composition, and the good dispersion It is difficult to provide sex.

  The amount of the high molecular weight surfactant (B-2) used may be 1.3 to 15 parts by weight, preferably 2.5 parts by weight based on 100 parts by weight of the flame retardant (A). Parts to 10 parts by weight.

  If the flame retardant composition does not contain the high molecular weight surfactant (B-2) or contains less than 1.3 parts by weight of the high molecular weight surfactant (B-2), the dispersibility of the flame retardant composition is poor. It is easy to separate layers (that is, it is easy to form a precipitate), and the stability over time is poor. When the amount of the high molecular weight surfactant (B-2) used is greater than 15 parts by weight, the high molecular weight surfactant (B-2) itself aggregates, and the dispersibility of the flame retardant composition is also poor.

  Further, the ratio of the molecular weight or the first weight average molecular weight of the low molecular weight surfactant (B-1) to the second weight molecular weight of the high molecular weight surfactant (B-2) is 0.05 to 0.21. When it exists, the dispersibility and temporal stability of a flame-retardant composition will become more favorable.

  As a supplementary explanation, the type of use of the low molecular weight surfactant (B-1) and the high molecular weight surfactant (B-2) is not particularly limited, but in order to avoid precipitation due to anion / cation binding, Must not be used together with anionic and cationic surfactants having the same and opposite polarities.

[Dispersion stabilizer (C)]
The dispersion stabilizer (C) of the present invention is for improving the viscosity of the flame retardant composition. For example, the viscosity of the flame retardant composition to which no dispersion stabilizer (C) is added is 50 cps to 100 cps, and when the dispersion stabilizer (C) is added, the viscosity is improved to about 200 cps to about 400 cps. Thereby, the temporal stability of the flame retardant composition and the dispersibility at room temperature or high temperature are improved. Here, high temperature is 45 degreeC-55 degreeC, for example. Therefore, the dispersion stabilizer (C) of the present invention may be a thickener.

  The dispersion stabilizer (C) may include, but is not limited to, polyvinyl alcohol, methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, xanthan gum, starch paste or combinations thereof.

  The amount of the dispersion stabilizer (C) used is 0.1 to 2.5 parts by weight, preferably 0.3 to 1.3 parts by weight, based on 100 parts by weight of the flame retardant (A). Parts by weight.

  If the flame retardant composition does not contain the dispersion stabilizer (C), the stability of the flame retardant composition over time is poor, and precipitation and phase separation are likely to occur after being left for a long time.

[Antifreeze (D)]
The antifreeze (D) of the present invention is for improving the dispersibility when the flame retardant composition is stored at a low temperature.

  Antifreeze (D) may include, but is not limited to, methanol, ethanol, ethylene glycol, propylene glycol, glycerin or combinations thereof.

  The amount of antifreeze (D) used is 2.5 to 20 parts by weight, preferably 7.5 to 15 parts by weight, based on 100 parts by weight of the flame retardant (A). .

  If the flame retardant composition does not contain the antifreeze agent (D), when it is stored at a low temperature (for example, less than 10 ° C.), the flame retardant composition is likely to be separated and form a precipitate.

[Defoamer (E)]
The antifoaming agent (E) includes a higher alcohol antifoaming agent, a silicone antifoaming agent, a polysiloxane antifoaming agent, a polyether-modified silicone antifoaming agent, a polyether antifoaming agent, or a combination thereof.

  As a specific example of the antifoaming agent (E), there is a defoaming agent of Y-14865 (manufactured by Sumirei Industrial Co., Ltd.).

  The amount of the antifoaming agent (E) used is 0.3 to 7.5 parts by weight, preferably 1.3 to 2.5 parts by weight, with respect to 100 parts by weight of the flame retardant (A). Parts by weight.

  If the flame retardant composition does not contain the antifoaming agent (E), the flame retardant composition has too many bubbles, and the appearance uniformity and dispersibility are also poor.

[Solvent (F)]
The solvent (F) may contain water or an organic solvent, but is preferably water.

  The above organic solvents include aromatic hydrocarbons such as toluene, xylene and alkylnaphthalene, ketones such as acetone and butanone, ethers such as dioxane and ethyl cellosolve, amides such as dimethylformamide, and sulfoxides such as dimethyl sulfoxide. , Halogenated hydrocarbons such as dichloromethane and chloroform may be included, but are not limited thereto.

  The amount of the solvent (F) used is 80 to 143.5 parts by weight, preferably 100 to 125 parts by weight, based on 100 parts by weight of the flame retardant (A).

  It should be particularly explained that the amount of the dispersion stabilizer (C), antifreeze agent (D) and antifoaming agent (E) used in the present invention can be determined by those skilled in the art from the spirit and scope of the present invention. It can be adjusted according to customs, experimental design, and various requirements without departing.

[Preparation of flame retardant composition]
After the flame retardant (A), the dispersant mixture (B), the antifreeze agent (D), the antifoaming agent (E) and the solvent (F) are uniformly mixed, the polishing equipment is rotated at a rotational speed of 200 rpm to 300 rpm. Polish for 1.5 hours to 2.5 hours. Thereafter, when the dispersion stabilizer (C) is added and mixed uniformly with stirring equipment, a flame retardant composition having an average particle size of 1 μm to 5 μm of a solid content is produced. It should be particularly explained that the solid content of the flame retardant composition is mainly derived from the flame retardant (A).

  When the average particle size of the solid content of the flame retardant composition exceeds 5 μm, the dispersibility and the flame retardant effect of the flame retardant composition are also poor. If the average particle size of the solid content of the flame retardant composition is less than 1 μm, the process cannot be achieved and the production cost is improved.

  As a supplementary explanation, the average particle diameter is measured by dynamic light scattering (DSL), and a person skilled in the art can understand the execution form and operation method. Not specifically explained.

[Manufacture of flame retardant layer and flame retardant material]
A flame retardant layer can be produced by forming the above flame retardant composition on a substrate by a coating method, a dipping method, a jetting method, or other appropriate methods. When the base material is a base fabric, the flame retardant composition and the dye are mixed, and the mixture of the flame retardant composition and the dye is formed on the base fabric by the above method to produce the flame retardant fabric material. it can.

  The base fabric may be a woven fabric, a nonwoven fabric, a film, or a flake. The material may be, for example, cotton, flax, nylon, leather, pure hair, rayon, silk thread, acrylic, bamboo carbon fiber, elastic fiber, chemically spun fiber, polyester fiber, or combinations thereof.

  One or more flame retardant layers may be provided on one surface or both upper and lower surfaces of the base fabric according to actual requirements. Moreover, the flame retardant cloth materials having the same or different flame retardant layers may be combined in various ways and superposed on a multilayer structure.

[Example 1]
100 parts by weight of aniline diphenyl phosphonate (A-1), 12.5 parts by weight of low molecular weight surfactant with a molecular weight of 1035 (model number: SINONATE 707SF; B-1-1), 4.5 parts by weight of weight average High molecular weight surfactant having a molecular weight of 6000 (model number: H14N; B-2-1), 12.5 parts by weight of propylene glycol (D-1), and 2.5 parts by weight of an antifoaming agent (model number: Y-14865; After adding E-1) to 117.5 parts by weight of water, the resulting mixture was placed in a polishing groove and fine zirconia beads having a particle size of 3.0 mm were added, and the rotation speed was 250 rpm for 2.0 hours. After polishing, 0.5 part by weight of xanthan gum (C-1) was added, and after mixing uniformly with stirring equipment, the average particle size of the solid content of the flame retardant composition was 2.5 μm. A flame retardant composition was produced.

[Examples 2 to 5 and Comparative Examples 1 to 6 ]
The flame retardant compositions of Examples 2 to 5 and Comparative Examples 1 to 6 were performed in the same manner as in Example 1 except that the components used or the contents were changed. Details of the components used and the contents are shown in Table 1, and are not specifically described here.

  It should be noted that the amounts of the dispersion stabilizer (C), antifreeze agent (D), and antifoaming agent (E) used in the examples of the present invention are only examples, but those skilled in the art will understand the present invention. Any use amount within the range claimed in the above is suitably used. This is a conventional technique in this field.

[Evaluation method]
1. Dispersibility Here, for dispersibility, the flame retardant compositions of Examples 1 to 5 and Comparative Examples 1 to 6 were subjected to a specific time at 5 ° C. (for example, 1 month, 3 months, 6 months, or 12 months). ) It was allowed to stand and observed for layering. In the case of the layer separation, it indicates that the dispersibility is poor, and the evaluation criteria are as follows.
◎: Undivided layer △: Lightly divided layer ×: Separated layer

2. Stability over time According to the evaluation method described above, when the elapsed time is long, the degree of separation becomes small, or when it is undivided (that is, when good dispersibility is maintained over time), it is difficult to manufacture. It shows that the temporal stability of the fuel composition is good.

  From Examples 1 to 5 in Table 1, when the flame retardant composition has a low molecular weight surfactant (B-1) and a high molecular weight surfactant (B-2) at the same time, the dispersibility and aging of the flame retardant composition Stability is found to be good. The ratio of the molecular weight / weight average molecular weight of the low molecular weight surfactant (B-1) used to the weight average molecular weight of the high molecular weight surfactant (B-2) is 0.05 to 0.21. In this case, the dispersibility and the temporal stability of the flame retardant composition are good. Moreover, when too much high molecular weight surfactant (B-2) is added, stability with time may be slightly lowered (as shown in Examples 4 to 5).

On the other hand, from Comparative Examples 1 to 6 in Table 1, when the flame retardant composition contains only one of the low molecular weight surfactant (B-1) or the high molecular weight surfactant (B-2), the flame retardant composition It turns out that the dispersibility of the product is poor. When the high molecular weight surfactant (B-2) is less than 5000 or greater than 20000, the dispersibility of the flame retardant composition is also poor.

  In summary, the flame retardant composition of the present invention contains surfactants of different molecular weights, has a solid content with a specific average particle size, has good dispersibility and stability over time, It is possible to effectively improve defects such as easy layering of the fuel composition and low quality stability of the manufactured product. Moreover, the flame retardant composition of the present invention can further mass-produce flame retardant fabrics by using a conventional process-formed flame retardant layer.

Although the present invention has been disclosed using the embodiments as described above, this is not intended to limit the present invention, and those skilled in the art will be able to make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is based on the contents specified in the appended claims.

Claims (10)

A flame retardant (A) having a structure represented by formula (I);

(In the formula (I), Ar represents the same or different aryl group, R represents the same or different, represents a hydrogen atom, a lower alkyl group, a cycloalkyl group, an aryl group, an allyl group or an aralkyl group, or each R Bond to each other to form a ring with the nitrogen atom on the phosphorus atom)
A low molecular weight surfactant (B-1) having a molecular weight or first weight average molecular weight of less than 1500, and a high molecular weight surfactant (B-2) having a second weight average molecular weight of 5,000 to 20,000. A dispersant mixture (B) comprising:
A dispersion stabilizer (C);
Antifreeze (D),
An antifoam (E),
Solvent (F),
With
The amount of the low molecular weight surfactant (B-1) used is 2.5 to 25 parts by weight with respect to 100 parts by weight of the flame retardant (A), and the high molecular weight surfactant ( B-2) is used in an amount of 1.3 to 15 parts by weight, and the dispersion stabilizer (C) is used in an amount of 0.1 to 2.5 parts by weight. D) is used in an amount of 2.5 to 20 parts by weight, the antifoaming agent (E) is used in an amount of 0.3 to 7.5 parts by weight, and the solvent (F) is used. The flame retardant composition having an amount of 80 parts by weight to 143.5 parts by weight and a solid content having an average particle diameter of 1 μm to 5 μm.   The molecular weight of the low molecular weight surfactant (B-1) or the ratio of the first weight average molecular weight to the second weight average molecular weight of the high molecular weight surfactant (B-2) is 0.05. The flame retardant composition according to claim 1, which is ˜0.21.   The amount of the low molecular weight surfactant (B-1) used is 2.5 to 12.5 parts by weight with respect to 100 parts by weight of the flame retardant (A), and the high molecular weight surfactant is used. The amount of the agent (B-2) used is 2.5 to 10 parts by weight, and the amount of the dispersion stabilizer (C) used is 0.3 to 1.3 parts by weight. The amount of the agent (D) used is 7.5 parts by weight to 15 parts by weight, the amount of the antifoaming agent (E) used is 1.3 parts by weight to 2.5 parts by weight, and the solvent (F) The flame retardant composition according to claim 1, wherein the amount used is 100 to 125 parts by weight.   The flame retardant composition according to claim 1, wherein the second weight average molecular weight is 6,000 to 20,000.   The low molecular weight surfactant (B-1) comprises an anionic low molecular weight surfactant, a cationic low molecular weight surfactant, a nonionic low molecular weight surfactant or an amphoteric low molecular weight surfactant. The flame retardant composition according to 1.   The flame retardant composition according to claim 1, wherein the high molecular weight surfactant (B-2) comprises an anionic high molecular weight surfactant or a cationic high molecular weight surfactant.   The flame retardant composition according to claim 6, wherein the anionic high molecular weight surfactant is polyacrylic acid sodium salt, polymethylacrylic acid sodium salt, maleic acid copolymer sodium salt or a combination thereof.   The flame retardant composition according to claim 6, wherein the cationic high molecular weight surfactant comprises polyacrylamide, polymethylacrylamide, or a combination thereof.   A flame retardant layer comprising the flame retardant composition according to claim 1. A flame retardant layer according to claim 9;
With the base fabric,
A flame-retardant cloth material.