JP3459101B2 - New surfactant, new emulsifier for emulsion polymerization, new dispersant for suspension polymerization and new resin modifier - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a novel surfactant, and the present invention further comprises a novel emulsifier for emulsion polymerization, a novel dispersant for suspension polymerization, and a novel vinyl which are composed of the surfactant. A resin modifier.

[0002]

2. Description of the Related Art Conventional surfactants have many functions such as emulsification, dispersion, washing, wetting, and foaming. Utilizing these properties, fibers, paper, rubber, plastics, etc. can be utilized. It is used in various fields such as metal, paint, ink, adhesive, pigment and civil engineering.

Particularly in recent years, there has been an increasing movement toward higher performance of terminal products using a surfactant, and along with this, secondary defects of the surfactant have been pointed out. For example, paints, printing inks, adhesives, etc. are indispensable for surface active agents at the time of manufacturing the product, or for stabilizing the product, and in terms of workability, etc. A surfactant is not required when used for printing, adhesion, adhesion, etc., and rather the existing surfactants have properties such as water resistance and oil resistance of the coating film, printing surface, adhesive film, etc. Often worsens.

As measures against these problems, attempts have been made to reduce the blending amount of surfactants and to make the surfactants higher in molecular weight, but until the stability of products and workability are still sufficiently solved. Has not reached.

Conventional emulsifiers for emulsion polymerization include anionic surfactants such as alkyl sulfates, alkylbenzene sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, and pluronic type interfaces. Nonionic surfactants such as activators have been used.

The emulsifier for emulsion polymerization is involved not only in the initiation reaction and the formation reaction of the polymerization but also in the mechanical stability, the chemical stability, the freezing stability and the storage stability of the produced emulsion. Emulsion physical properties such as particle size, viscosity and foamability, water resistance when formed into a film,
It is known that physical properties of the film such as weather resistance, adhesiveness, and heat resistance are greatly affected. However, in emulsions emulsion-polymerized using a normal emulsifier, the foaming of the emulsion due to the emulsifier is high, and when the emulsion is made into a film, the emulsifier remains in the film in a free state, so that the adhesiveness, Problems such as deterioration of film physical properties such as water resistance, weather resistance, and heat resistance have been pointed out.

In order to eliminate such drawbacks, in recent years, a molecule having a group having surface activity and a group having a polymerizable group,
Proposals have been made regarding reactive surfactants that not only act as emulsifiers but are gradually incorporated into the polymer during polymerization by chemical bonds. For example, there are JP-A No. 2-111427 and JP-A No. 2-164430, but none of them has sufficiently solved the above problems.

As a conventional dispersant for suspension polymerization, when a vinyl resin is industrially produced, a vinyl chloride monomer is dispersed in an aqueous medium in the presence of a dispersion stabilizer to obtain an oil-soluble catalyst. A suspension polymerization method in which the polymerization is carried out is widely practiced. Factors that govern the quality of such resins include the rate of polymerization, water / monomer ratio, polymerization temperature, type and amount of catalyst,
The type of the polymerized layer, the stirring speed, the type and amount of the dispersion stabilizer, and the like can be mentioned, but it is known that the type of the dispersion stabilizer has a great influence. As a conventional dispersant for suspension polymerization of a vinyl resin, a cellulose derivative such as methylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose, or a water-soluble polymer such as gelatin or polyvinyl alcohol. And so on. However, such a dispersant remains free in the vinyl resin after polymerization, which causes a problem that the physical properties of the resin such as water resistance, weather resistance, and durability of the vinyl resin are deteriorated. there were.

Further, as a vinyl-based resin modifier, conventionally,
JP-A-1-174511 discloses a modifier for a vinyl polymer. However, when this modifier was used, a uniform copolymer could not be obtained because of poor compatibility with the monomer. As an attempt to improve the compatibility, there is JP-A-1-174512, but there is a problem that the compatibility is still insufficient and the effect of modifying the polymer is insufficient.

Therefore, an object of the present invention is to provide a novel surfactant which does not have the above-mentioned drawbacks, an emulsifier for emulsion polymerization, a dispersant for suspension polymerization and a resin modifier which are composed of the surfactant. is there.

[0011]

That is, the present invention is based on the general formula (1)

[Chemical 2] (In the formula, R ₁ is a hydrogen atom or a methyl group, A and B are an alkylene group or a substituted alkylene group having 2 to 4 carbon atoms, and R ₃ is a linear or branched chain having 8 to 24 carbon atoms, A hydrogen atom is an alkyl group or an alkenyl group which may be substituted with a fluorine atom, or an aryl group, and n and m are 0 or a positive number, M is a hydrogen atom or an alkali metal, an alkaline earth metal, ammonium, It is a salt of an alkylamine or an alkanolamine.).

Further, the present invention relates to a novel emulsifier for emulsion polymerization, a novel dispersant for suspension polymerization, and a novel vinyl resin modifier, which comprises the surfactant.

The above-mentioned surfactant of the present invention can be obtained, for example, as follows. The compound represented by R ₃ O (BO) _m H (R ₃ , B and m are the same as above) is subjected to phosphoric acid esterification by a conventional method using phosphorus trichloride and the like, and the obtained compound is then treated in an alkaline aqueous solution. Partial hydrolysis is carried out, then the following formula:

[Chemical 3] It can be obtained by reacting a compound represented by

It can also be obtained by neutralizing this compound with an alkaline substance, for example, sodium hydroxide, calcium carbonate, ammonium chloride, triethylamine, diethanolamine or the like.

In the compound of the present invention, the number of carbon atoms represented by R ₃ above, in which a hydrogen atom may be replaced by a fluorine atom, is 8
Examples of the straight-chain or branched alkyl or alkenyl group of 24, Oh corruptible, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, docosyl, Te <br/> Torakoshiru, 2 - ethylhexyl, 2-octyldodecyl, motor Nomechiru Branched-isostearyl, octenyl, decenyl, dodecenyl, tetradecenyl, hexadecenyl, octadecenyl, docosenyl, tetracocenyl , tridecafluorooctyl, heptadecafluorododecyl , heneicosafluorododecyl, pentacosafluorododecyl , nonacosafluoro. Dodecyl, tritriacontafluorooctadecyl, 2-pentafluoroethylpentafluorohexyl, 2-tridecafluorohexyl tridecafluorodecyl, 2-heneicosafluorodecylhene Kosa fluoro tetradecylcarbamoyl Le group and the like, the aryl group, a linear or branched phenyl group substituted with an alkyl group having 1 to 15 carbon atoms, ethylphenyl examples, butylphenyl, hexylphenyl, octyl phenyl, nonylphenyl group about Mirufu <br/> Eniru, O- phenyl, P- phenyl, styrenated phenyl, p-cumyl phenyl, alpha-
Examples thereof include naphthonyl group .

A and B in the above formula are alkylene groups having 2 to 4 carbon atoms or substituted alkylene groups such as ethylene group, propylene group, butylene group and isobutylene group, which may be used alone or in blocks or It may be a random mixture. A and B may be the same or different.

M is hydrogen, an alkali metal such as sodium and potassium, an alkaline earth metal such as magnesium and calcium, an alkanolamine such as ammonium, monoethanolamine and triethanolamine, and an alkylamine such as monomethylamine and dipropylamine. Can be mentioned. The substances used in the present invention are not limited to the above.

When the surfactant of the present invention is used as a detergent, R ₃ preferably has 8 to 24 carbon atoms, n is 0 to 150, m is 0 to 150, and more preferably. It is preferable that n is 0 to 100 and m is 0 to 100. The amount used is 0.01 to 10% by weight, preferably 0.1 to 5% by weight.

When the surfactant of the present invention is used as a wetting agent, R ₃ preferably has 8 to 24 carbon atoms, n is 0 to 150, m is 0 to 150, and more preferably. It is preferable that n is 0 to 100 and m is 0 to 100. The amount used is 0.01 to 10% by weight, preferably 0.1 to 5% by weight.

The surfactant of the present invention is an emulsifier for emulsion polymerization, a dispersant for suspension polymerization, a vinyl resin modification (hydrophilicity adjustment, compatibility improvement, etc.) as a surfactant having reactivity with a vinyl group. Antistatic property, antifogging property, water resistance property, adhesive property property, dyeability property, film forming property property, weather resistance property, blocking resistance property, etc.).

The emulsifier for emulsion polymerization of the present invention comprises the above-mentioned surfactant of the present invention, and preferably R ₃ has 8 to 24 carbon atoms, n is 0 to 150, and m is 0.
150, more preferably n is 0 to 100 and m is 0 to 10.
It should be 0.

Suitable for applying the emulsifying agent for emulsion polymerization of the present invention is emulsion polymerization of vinyl monomers, for example, vinyl compounds such as vinyl acetate, vinyl propionate, alkyl vinyl ether and alkyl vinyl ketone, and Acrylic acid, methyl acrylate, methyl methacrylate, acrylonitrile, acrylic monomers such as acrylamide, ethylene, propylene, 1-butene, 1-
C2-C30 α-olefins such as pentene, 1-hexane, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-tridecene, 1-tetradecene, Examples thereof include monomers such as halogen-containing monomers such as vinyl chloride and vinylidene chloride, maleic anhydride, maleic acid esters, and itaconic acid esters. The monomer used is not limited to the above.

The amount of the emulsifier for emulsion polymerization of the present invention to be used can be arbitrarily selected within the range of the conventional amount of the conventionally known emulsifier for emulsion polymerization. 1 to 20% by weight, preferably 0.2 to 10% by weight is good.

The dispersant for suspension polymerization of the present invention comprises the above-mentioned surfactant of the present invention, and preferably the number of carbon atoms of R ₃ is
8 to 24 is preferable, n is 0 to 150, and m is 0.
150, more preferably n is 0 to 100 and m is 0 to 10.
It should be 0.

Suitable for applying the dispersant for suspension polymerization of the present invention is suspension polymerization of vinyl monomers, for example, vinyl acetate, vinyl propionate, alkyl vinyl ether, alkyl vinyl ketone, and other vinyls. Compounds and acrylic monomers such as acrylic acid, methyl acrylate, methyl methacrylate, acrylonitrile, acrylamide, ethylene, propylene, 1-butene, 1-pentene, 1-hexane, 1-heptene, 1-octene,
The carbon number of 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-tridecene, 1-tetradecene, etc. is 2
.About.30 .alpha.-olefins, monomers such as halogen-containing monomers such as vinyl chloride and vinylidene chloride, maleic anhydride, maleic acid esters, and itaconic acid esters. The monomer used is not limited to the above.

The amount of the dispersant for suspension polymerization of the present invention can be arbitrarily used within the range of the conventionally used amount of a dispersant for suspension polymerization known in the related art, but it is generally about the above vinyl resin. Therefore, 0.1 to 20% by weight, preferably 0.2 to 10% by weight is good.

The vinyl-based resin modifier of the present invention comprises the above-mentioned surfactant, and preferably R ₃ has 8 to 2 carbon atoms.
4 is preferable, n is 0 to 150, and m is 0 to 15.
0, more preferably n is 0 to 100 and m is 0 to 100.

Suitable for applying the vinyl resin modifier of the present invention is a resin from a vinyl monomer,
For example, vinyl compounds such as vinyl acetate, vinyl propionate, alkyl vinyl ethers and alkyl vinyl ketones, acrylic monomers such as acrylic acid, methyl acrylate, methyl methacrylate, acrylonitrile and acrylamide, ethylene, propylene, 1-butene, 1 −
C2-C30 α-olefins such as pentene, 1-hexane, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-tridecene, 1-tetradecene, Examples thereof include monomers such as halogen-containing monomers such as vinyl chloride and vinylidene chloride, maleic anhydride, maleic acid esters, and itaconic acid esters. The monomer used is not limited to the above.

The vinyl-based resin modifier of the present invention is capable of simultaneously improving the compatibility with the monomer and the modifying effect. Further, by using the modifier of the present invention,
It is possible to impart permanent antistatic property and antifogging property to the resin used.

The amount of the modifier of the resin of the present invention to be used can be variously changed depending on the kind of the monomer, the purpose of the modification, the required performance and the like. 1 to
95% by weight can be used, and particularly, when a water-soluble resin having insufficient hydrophilicity is to be converted into a highly hydrophilic polymer, it is preferable to use 10 to 80% by weight based on the monomer. .

Polymers for other uses such as water resistance, adhesion, antistatic property, antifogging property, dyeing property, film forming property, weather resistance and blocking resistance, or for polymer alloys. When it is intended to impart compatibilization property to the monomer, it is preferably used in an amount of 0.1 to 20% by weight based on the monomer.

When the vinyl-based resin modifier of the present invention is used, divinylbenzene, in order to improve the physical properties of the polymer,
A cross-linkable divinyl compound such as ethylene glycol dimethacrylate or methylene bisacrylamide can be arbitrarily used within the range of the usual amount used.

[0033]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited thereto. Production Example A 4 mol of C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₅ H and 2 mol of phosphorus trichloride were reacted at 100 ° C. in a nitrogen atmosphere. Then, the obtained substance was partially hydrolyzed with an aqueous solution of sodium hydroxide to obtain a structural formula.

[Chemical 4] Was obtained. Next, 1 mol of this compound and CH _{2
= CH-CH 2 O (C} 2 H 4 O) 1 mol of ₁₀ H are reacted by a conventional method, the structural formula is oxidized

[Chemical 5] The following surfactant (A) was obtained.

Preparation Example B Preparation was carried out except that C ₁₄ H ₂₉ O (C ₂ H ₄ O) ₁₀ H was used in place of C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₅ H used in Preparation Example A. Example A
Structural formula similar to

[Chemical 6] Was obtained. Next, 1 mol of this compound and CH ₂ =
_{CH-CH 2 O (C 2} H 4 O) 1 mol of ₁₀ H are reacted by a conventional method, the structural formula is reacted with sodium hydroxide and the product is oxidized

[Chemical 7] The following surfactant (B) was obtained.

Production Example C C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₅ H used in Production Example A
In the same manner as in Production Example A except that C ₁₈ H ₃₇ O (C ₂ H ₄ O) ₂₀ H was used instead of

[Chemical 8] Was obtained. Next, 1 mol of this compound and CH ₂ =
1 mol of CH—CH ₂ OH was reacted according to a conventional method to oxidize, and the product was reacted with potassium hydroxide to give a structural formula.

[Chemical 9] The following surfactant (C) was obtained.

[0036]

Preparation Example E C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₅ H used in Preparation Example A
Instead of C ₈ H ₁₇ O (C ₂ H ₄ O) ₂₀ (C ₃ H
₆ O) ₁₀ (C ₄ H ₈ O) ₁₀ H was used, and the structural formula was the same as in Production Example A.

[Chemical 12] Was obtained. Next, 1 mol of this compound and CH ₂ =
_{CH-CH 2 O (C 2} H 4 O) 10 H is reacted in a conventional method 1 mol of the structural formula of the product is oxidized by reacting with monoethanolamine

[Chemical 13] The following surfactant (E) was obtained.

Production Example F C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₅ H used in Production Example A
Instead _{of, Nph-O (C 2 H} 4 O) 50 (C 3 H 6
O) ₁₀ H (Nph- represents a naphthyl group) is used, and the structural formula is the same as in Production Example A.

[Chemical 14] Was obtained. Next, 1 mol of this compound and CH ₂ =
_{CH-CH 2 O (C 2} H 4 O) 10 H is reacted in a conventional method 1 mol of the structural formula of the product is oxidized by reaction with monomethylamine

[Chemical 15] The following surfactant (F) was obtained.

Preparation Example G Instead of C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₅ H used in Preparation Example A, C ₁₈ H ₃₅ O (C ₂ H ₄ O) ₈₀ (C ₃ H ₆ O) Structural formula is the same as in Production Example A except that ₂₀ H is used.

[Chemical 16] Was obtained. Next, 1 mol of this compound and CH ₂ =
_{CH-CH 2 O (C 2} H 4 O) 30 (C 3 H 6 O) 20 H is reacted in a conventional method 1 mol of the structural formula is oxidized

[Chemical 17] The following surfactant (G) was obtained.

Preparation Example H Instead of C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₅ H used in Preparation Example A, C ₉ H ₁₉ —Ph—O (C ₂ H ₄ O) ₃₀ (C ₃ H ₆ O) ₂₀ (C ₄
H ₈ O) ₅ H (-Ph- represents a phenylene group) was used, and the structural formula was the same as in Production Example A.

[Chemical 18] Next, 1 mol of this compound and CH ₂ ═CH—CH ₂ O (C ₂ H
1 mol of ₄ O) ₃₀ (C ₃ H ₆ O) ₁₀ H is reacted by a conventional method,
Structural formula by oxidation and reaction of the product with sodium carbonate

[Chemical 19] The following surfactant (H) was obtained.

[0041]

Comparative Example 1 3-Allyloxy-2-hydroxypropyl dimethyldecyl ammonium chloride

Comparative Example 2 Hydroxypropyl methyl cellulose

Comparative Example 3 Ethylene oxide 30 mol adduct of nonylphenol

Example 1 With respect to the surfactants (A) to (C), (E) to (H) of the present invention and Comparative Examples (1) to (3), the surface tension of each aqueous solution was measured. (Note that the surface tension was measured by the Wilhelmi method). The results are shown in Table 1.

[0046]

[Table 1]

Example 2 Surfactant (A) of the present invention
For (C), (E) to (H) and Comparative Examples (1) to (3), the dispersion performance of carbon black and the emulsification performance of toluene were measured. The results are shown in Table 2. The test method is as follows. <Dispersion performance test method> Container 1
Put 1 g of surfactant and 10 g of carbon black into a graduated cylinder with a stopper of 00 ml, and dissolve and disperse with water.
The volume was adjusted to 0 ml. Next, the graduated cylinder was shaken 100 times in 1 minute and then left still at 25 ° C. for 1 hour. Then, after removing 30 cc from the liquid upper surface and filtering with a glass filter, it was dried at 105 ° C. and the dispersibility was measured from the weight of the residue on the glass filter by the following formula. Dispersion performance (%) = residue weight of glass filter (g) / 3 (g) x 100 <Emulsification performance test method> 5 ml of 0.5% aqueous surfactant solution and 5 ml of kerosene in a test tube with a graduated stopper having a capacity of 20 ml. Add 1 per minute
After shaking for 00 times, the mixture was allowed to stand at 25 ° C. for 1 hour . Then, the volume (ml) of the emulsified layer was measured, and the emulsifying property was measured by the following formula. Emulsification performance (%) = emulsified layer (ml) / 10 (ml) x 100

[0048]

[Table 2]

Example 3 Using the surfactants (A) to (C), (E) to (H) of the present invention and the surfactant of Comparative Example (1), emulsion polymerization was carried out using ethyl acrylate as a monomer. went. The mechanical stability, foamability, and water resistance of the polymer film obtained from the polymer emulsion obtained were measured. The results are shown in Table 3. <Polymerization method> 120 g of water was charged into a reaction vessel equipped with a reflux condenser, a stirrer, a dropping funnel and a thermometer, and the system was replaced with nitrogen gas. Separately, in 80 g of ethyl acrylate, 4 g of the surfactant compositions (A) to (C) and (E) to (H) of the present invention and the surfactant of Comparative Example (1) were dissolved. 4g and potassium sulfate 0.08 g, sodium bisulfite 0.
04 g was added to the reaction vessel, and polymerization was initiated at 50 ° C. Then, the remaining monomer / surfactant mixture was continuously dropped into the reactor over 2 hours, and after the dropping was completed, the mixture was aged for 2 hours to obtain an emulsion. <Evaluation / Measurement method> 50g of mechanical stability emulsion is 10k with Marron method stability tester
g, 1000 rpm, rotating for 5 minutes, the produced coagulum was filtered through a 100-mesh wire net, the filter residue was washed with water and dried at 105 ° C. for 2 hours. Represent Dilute the effervescent emulsion twice with water and add 20 ml of this diluted emulsion to a 100 ml graduated test tube.
Measure the bubble height when shaken up and down for 0 seconds and display in ml. Depending on the time required to whiten a polymer film having a water resistance of 0.2 mm by a water immersion method, ⊚: 1 day or more, ∘: 1 hour or more,
X: Evaluation was made on the basis of less than 1 hour.

[0050]

[Table 3]

Example 4 150 L of glass-lined autograve was added to 150 parts by weight of deionized water to prepare the surfactant (A) of the present invention.
1 part by weight of each of the surfactants (C), (E) to (H) and Comparative Example (2) as a dispersant and 0.2 part by weight of di-2-ethylhexyl peroxycarbonate were charged.
After degassing the inside of the autograve to 50 mmHg to remove oxygen, 100 parts by weight of vinyl chloride monomer was charged, and the temperature was raised to 57 ° C. under stirring at a rotation speed of 500 rpm to carry out polymerization. After the initiation of the polymerization, the pressure in the autograve was 8.0 kg / cmG, but 7 hours after the initiation of the polymerization,
Since it became 4.0 kg / cmG, the polymerization was stopped at this point, unreacted vinyl chloride monomer was purged, and the contents were taken out and dehydrated and dried.

Example 5 Instead of the vinyl chloride monomer of Example 4, 100 parts by weight of ethylene monomer was charged, and the surfactant of the present invention was used.
Polymerization was carried out in the same manner as in Example 4 except that 1 part by weight of each of (A), (E), (H) and the surfactant of Comparative Example 2 was used as a dispersant.

[0053] Instead of the vinyl chloride monomer in Example 6 Example 4, 100 parts by weight were charged vinyl acetate monomers, surfactants of the present invention (B), (F) a 及 beauty Comparative Example 2 of surfactants, respectively Polymerization was carried out in the same manner as in Example 4 except that 1 part by weight of the dispersant was used.

Example 7 In place of the vinyl chloride monomer of Example 4, 100 parts by weight of ethyl vinyl ether monomer was charged, and the surfactants (C) and ( G) of the present invention and the surfactant of Comparative Example 2 were dispersed respectively. Polymerization was carried out in the same manner as in Example 4 except that 1 part by weight was used as the agent.

Example 8 In place of the vinyl chloride monomer of Example 4, 100 parts by weight of a mixture of vinyl chloride monomer / ethyl acrylate (weight ratio 2/1) was charged, and the surfactant (A), ( Polymerization was carried out in the same manner as in Example 4 except that 1 part by weight of each of C) and the surfactant of Comparative Example 2 was used as a dispersant.

The following tests were conducted on the resins obtained in Examples 4 to 8 above. The results are shown in Table 4. (1) Particle size distribution: The dry resin analysis using a Tyler-mesh standard wire mesh was used to measure the weight ratio of particles of the resin particles that did not pass through 250 mesh. (2) Water resistance: The sol was adjusted with the following composition, and the sol was adjusted to 0.5.
The sheet having a thickness of 190 mm and heated at 190 ° C. for 10 minutes was immersed in water at 23 ° C. for 24 hours, and the light transmittance was measured. (3) Thermal stability: The same sol used for water resistance was poured into an aluminum mold and heated at 190 ° C. in a hot air atmosphere for 30 days.
The change in color tone after minute is shown in five stages from A (small change) to E (large change).

[0057]

[Table 4]

Example 9 Compatibility with Monomers 10 g each of styrene, methacrylic acid, vinyl acetate and acrylonitrile and the surfactants (A) to (E) of the present invention ,
The surfactants of (E) to (H) and Comparative Examples 1 and 2 were used as modifiers, and 2 g of each was mixed, and the compatibility of the various modifiers with the above monomers was evaluated. The results are shown in Table 5.

[0059]

[Table 5]

Example 10 100 g of xylene was charged into a reaction vessel equipped with a reflux condenser, a stirrer, a dropping funnel and a thermometer, and the system was replaced with nitrogen gas. Separately, 150 g of styrene, 7.5 g of the surfactants (A) to (C) and (E) to (H) of the present invention and the surfactants of Comparative Examples 2 and 3 as modifiers, 2 g of benzoyl peroxide, respectively. Di-tertiary butyl peroxide 1
g of the mixed solution was prepared, and the mixed solution was continuously added dropwise into the reactor at a reaction temperature of 130 ° C. for 2 hours. Further, xylene 10 g, benzoyl peroxide 0.5 g, di-
A mixed solution of 0.5 g of tert-butyl peroxide was added dropwise and reacted for 2 hours. Then, the mixture was cooled and 90 g of xylene was added to obtain a polymer aqueous solution. A polymer film having a thickness of 0.2 mm was produced from each of the obtained polymer solutions by an ordinary method, and water resistance, antifogging property and antistatic property were evaluated by the following methods.

<Measurement / Evaluation Method> 1 g of the water-resistant polymer film of the film was put in boiling water and boiled for 24 hours,
Then, it was dried at 105 ° C. for 2 hours and the change of the film was observed. ⊚: No change, ◯: Part of the film surface was clouded Δ: Part of the film was deformed ×: Entire film was deformed Anti-fog property of the film The contact angle of water with respect to the polymer film was measured. Antistatic Property of Film The polymer film was allowed to stand in an atmosphere having a temperature of 20 ° C. and a humidity of 45% for 24 hours, and the surface resistivity was measured.

Example 11 100 g of xylene was charged into a reaction vessel equipped with a reflux condenser, a stirrer, a dropping funnel and a thermometer, and the system was replaced with nitrogen gas. Separately, 75 g of 2-ethylhexyl acrylate,
75 g of methacrylic acid, the surfactant (A) of the present invention,
(C), (E), (G) 7.5g 及 beauty Comparative Example 3 of surfactants as each modifier, benzoyl peroxide 2g,
A mixed solution of 0.5 g of di-tert-butyl peroxide was prepared, and the mixed solution was continuously added dropwise into the reactor at a reaction temperature of 130 ° C. for 2 hours. Furthermore, a mixed solution of 10 g of xylene, 0.5 g of benzoyl peroxide and 0.5 g of di-tert-butyl peroxide was added dropwise,
The reaction was carried out for 2 hours. Then, cool down and 90 g of xylene
Then, a polymer solution was obtained. A polymer film having a thickness of 0.2 mm was prepared from each of the obtained polymer solutions by an ordinary method, and water resistance, antifogging property and antistatic property were evaluated in the same manner as in Example 10, respectively. The results are shown in Table 6.

[0063]

[Table 6]

[0064]

The effect of the present invention is to provide a good surfactant without the above-mentioned drawbacks. Another effect of the present invention is to provide a good emulsifier for emulsion polymerization without the above-mentioned drawbacks. Another effect of the present invention is to provide a good dispersant for suspension polymerization without the above-mentioned drawbacks. Another effect of the present invention is to provide a good vinyl resin modifier which does not have the above-mentioned drawbacks.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-60-78993 (JP, A) US Patent 3449303 (US, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B01F 17 / 14 B01F 17/42 C08F 2/18 C08F 2/24 C08K 5/52

Claims (4)

(57) [Claims] 1. A compound represented by the general formula (1): (In the formula, R ₁ is a hydrogen atom or a methyl group, A and B are an alkylene group or a substituted alkylene group having 2 to 4 carbon atoms, and R ₃ is a linear or branched chain having 8 to 24 carbon atoms, A hydrogen atom is an alkyl group or an alkenyl group which may be substituted with a fluorine atom, or an aryl group, and n and m are 0 or a positive number, M is a hydrogen atom or an alkali metal, an alkaline earth metal, ammonium, A novel surfactant characterized in that it is a salt of an alkylamine or an alkanolamine.). 2. A novel emulsifying agent for emulsion polymerization, which comprises the surfactant according to claim 1. 3. A novel dispersant for suspension polymerization, which comprises the surfactant according to claim 1. 4. A novel vinyl-based resin modifier comprising the surfactant according to claim 1.