JPH0665508A - Antistatic resin composition - Google Patents

Abstract

PURPOSE:To develop a resin composition extremely good not only in permanent antistatic property but also in other properties by blending a thermoplastic molding resin with an adequate amount of a specific polyester elastomer excellent in compatibility with the resin, mechanical strength, heat resistance, etc. CONSTITUTION:This composition comprises 1-30 pts.wt. polyetherester obtained by the condensation of a polyalkylene oxide glycol having a number-average mol.wt. of 200-20,000 and a 2-8C glycol with at least either of a 4-20C polybasic carboxylic acid and a polybasic carboxylic acid ester, 99-70 pts.wt. thermoplastic resin, and 0-5 pts.wt. metal sulfonate represented by the formula R-SO3M (wherein R is an alkyl, an alkylaryl, or an aryl and M is an alkali or alkaline earth metal).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antistatic resin composition which has excellent permanent antistatic property and is preferably used for various molding materials such as electric appliance parts, fibers and films.

[0002]

Plastic materials are used in a wide variety of fields due to their excellent properties. However, since most of these materials are hydrophobic, their application can be further expanded if antistatic property is imparted.

For example, it can be applied to a copying machine, a printer, a synthetic fiber garment, a dustproof component or the like, which is desired to prevent the damage due to static electricity. Many proposals have been made so far as methods for imparting antistatic properties to plastic materials.

For example, a method of surface coating or kneading an antistatic agent on a thermoplastic resin can be mentioned.

[0005]

In particular, sulfonic acid metal salts are used in JP-A-50-53465, JP-A-54-6049, JP-A-60-38123, etc. The decrease was remarkable, and the problem was that the antistatic agent fell off after washing with water.

There is also known a method in which a hydrophilic polymer is mixed with a thermoplastic resin in order to make the antistatic effect durable, and an antistatic agent is optionally blended. As the most typical method, a method of using polyalkylene oxide and a sulfonic acid metal salt in combination is proposed in Japanese Patent Publication No. 60-11944, but not only the mechanical strength and heat resistance of polyalkylene oxide itself are poor. However, since the compatibility with a hydrophobic thermoplastic resin is generally poor, there has been a problem that various physical properties of the obtained resin composition are significantly deteriorated.

[0007]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that a specific polyester elastomer excellent in compatibility with a thermoplastic resin, mechanical strength, heat resistance and the like is selected. It was found that an antistatic resin composition having not only permanent antistatic property but also excellent physical properties can be obtained by mixing an appropriate amount with a molding resin, and the present invention has been completed.

That is, the present invention relates to "(A) (a ¹ ) poly (alkylene oxide) glycol having a number average molecular weight of 200 to 20,000 (a ² ) and glycol (a ³ ) carbon atom having 2 to 8 carbon atoms. Number 4 to 20 polycarboxylic acid and /
Alternatively, with respect to 1 to 30 parts by weight of a polyether ester obtained by condensing a polyvalent carboxylic acid ester body, (B) an optional thermoplastic resin 99 to 70 parts by weight (C) the following formula (I) R-SO ₃ M sulfonic acid metal salt represented by (I) << wherein R represents an alkyl group or an alkylaryl group or aryl group, and M represents an alkali metal or an alkaline earth metal >> 0-5 The present invention provides an antistatic resin composition characterized by being mixed in parts by weight.

The present invention will be specifically described below.

The antistatic resin composition of the present invention comprises (A) 1 to 30 parts by weight of a specific polyester elastomer, (B) 99 to 70 parts by weight of an optional thermoplastic resin, and (C) the following formula (I). 0-5 parts by weight of a sulfonic acid metal salt represented by R-SO ₃ M (I) << wherein R is an alkyl group or an alkylaryl group or aryl group, and M is an alkali metal or alkali Which represents an earth metal >>, and the components (A) and (B) are uniformly mixed so that the total is 100 parts by weight. If the weight ratio of the (A) specific polyester elastomer in the entire antistatic resin composition of the present invention is less than 1% by weight, (B) there is almost no effect of antistaticizing any thermoplastic resin, and conversely 30 When the content exceeds the weight%, the mechanical strength and heat resistance of the antistatic resin composition of the present invention decrease, which is not preferable.

Further, the sulfonic acid metal salt represented by the formula [I] (C) is not always necessary for the antistatic resin composition of the present invention. The antistatic property is remarkably improved from the above-mentioned effect, which is preferable. However, when 5% by weight or more is added to the entire antistatic resin composition of the present invention, the surface of the resin composition becomes rough, and causes coloring and deterioration of physical properties. Is not preferable.

Generally, the range of 0.5 to 3% by weight is most preferable.

The (a ₁ ) lactone which is a constituent component of the polyester elastomer (A) in the present invention or a polymer thereof may be any one as long as it can form a polyester elastomer, but β-pyropiolactone, Dimethylpropiolactone (pivalolactone), butyrolactone, γ-valerolactone, γ-caprolactone, γ-caprylolactone, γ-laurolactone, δ-valerolactone, δ-caprolactone and ε.
-Caprolactone or polymers and copolymers obtained by ring-opening polymerization of these lactones.

Among these lactones or polymers thereof, one kind or a combination of two or more kinds is preferably used, and a polymer of ε-caprolactone and ε-caprolactone is preferably used because of its excellent antistatic property, processability and physical properties. The number average molecular weight of the lactone polymer is not limited, and any one can be used from the viewpoint of operability in polymerization and the like.

The lactone (a ¹ ) or a polymer thereof is used in the range of 5 to 80% by weight as the constitutional unit of the elastomer (A). If it is less than 5% by weight, the antistatic property to the (A) polyester elastomer is poor, and if it exceeds 80% by weight, the mechanical properties and heat resistance of the (A) polyester elastomer are deteriorated, which is not preferable.

As the (a ² ) glycol having 2 to 8 carbon atoms, which is a constituent component of the polyester elastomer (A) in the present invention, ethylene glycol, propylene glycol, 1,4-butanediol and 1,3-butane are used. Diol, 1,2-butylene glycol, trimethylene glycol, neopentyl glycol, diethylene glycol, 2-methyl-1,3-propylene glycol, triethylene glycol, octamethylene glycol,
1,4-cyclohexanedimethanol, 1,4-cyclohexanediol and the like are used.

The (a ² ) glycol having 2 to 8 carbon atoms is 5 to 50 as a constitutional unit of the polyester elastomer (A).
It is incorporated in the range of 50% by weight, and when it is less than 5%, the mechanical properties and heat resistance of the polyester elastomer are poor, and 50% by weight.
In the above cases, the mechanical properties of the obtained polyether ester are inferior, and when the number average molecular weight exceeds 20,000, antistatic performance is insufficient, which is not preferable.

[0018] (A) a polyester elastomer - The structure is the component (a ³⁾ a polyvalent carboxylic acid having 4 to 20 carbon atoms and / or polycarboxylic acid ester, divalent,
A carboxylic acid and a carboxylic acid anhydride having a valence of 3 or more and 4 or more and / or an ester of these polyvalent carboxylic acids are shown singly or in a mixture of two or more.

The polyvalent carboxylic acid in the present invention is a carboxylic acid having a valence of 2 or more or a carboxylic acid anhydride thereof, and examples of the divalent carboxylic acid include terephthalic acid, isophthalic acid, phthalic acid, naphthalene-2,6-dicarboxylic acid, Naphthalene
Aromatic dicarboxylic acids such as 2,7-dicarboxylic acid, diphenyl-4,4'-dicarboxylic acid, diphenoxyethanedicarboxylic acid and their alkyl nucleus-substituted carboxylic acids and halogen nucleus-substituted carboxylic acids, 1,4-cyclohexanedicarboxylic acid Alicyclic dicarboxylic acids such as 1,2-cyclohexanedicarboxylic acid and dicyclohexyl-4,4′-dicarboxylic acid, and succinic acid, oxalic acid, adipic acid, sebacic acid, maleic acid, fumaric acid, itaconic acid,
Examples of trivalent carboxylic acids such as aliphatic dicarboxylic acids such as dodecanedioic acid and maleic anhydride and phthalic anhydride include 1,
2,4-trimellitic acid, 1,2,5-naphthalene tricarboxylic acid, 2,6,7-naphthalene tricarboxylic acid,
3,3 ', 4-diphenyltricarboxylic acid, benzophenone 3,3', 4-tricarboxylic acid, diphenylether-3,3 ', 4-tricarboxylic acid, and aromatic tricarboxylic acids such as alkyl nucleus substitution products and halogen nucleus substitution products thereof Acids and aliphatic tricarboxylic acids such as ethylene 1,1,2-tricarboxylic acid and propylene-1,2,3-tricarboxylic acid and their tricarboxylic acid anhydrides, and tetravalent carboxylic acids include pyromellitic acid and diphenyl. −
2,2 ', 3,3'-tetracarboxylic acid, benzophenone-2,2', 3,3'-tetracarboxylic acid, diphenylsulfone-2,2 ', 3,3'-tetracarboxylic acid,
Aromatic tetracarboxylic acids such as diphenyl ether-2,2 ', 3,3'-tetracarboxylic acid, 2,3,6,7-naphthalene tetracarboxylic acid and ethylene-1,1,
2,2-tetracarboxylic acid, propylene-1,1,3,
Specific examples include aliphatic tetracarboxylic acids such as 3-tetracarboxylic acid and their tetracarboxylic acid monoanhydrides and tetracarboxylic acid dianhydrides.

Of these, terephthalic acid, isophthalic acid and adipic acid are preferred from the viewpoints of polymerizability, color tone and physical properties, and when a trivalent or higher polyvalent carboxylic acid such as trimellitic acid or pyromellitic acid is used in combination with (A) poly In some cases, the molecular weight of the ether ester can be easily increased, which is preferable.

The polyvalent carboxylic acid ester in the present invention is a compound in which a part or all of the polyvalent carboxylic acid such as monoester, diester and tri- or tetraester of the above-mentioned polycarboxylic acid is esterified. So, specifically, monomethyl terephthalate, monoethyl terephthalate, dimethyl terephthalate, dimethyl terephthalate, dimethyl isophthalate, dimethyl adipate, diethyl malonate, monomethyl trimellitate, monomethyl trimellitic anhydride, trimethyl trimellitate. , Pyromellitic acid tetramethyl, ethylene tetracarboxylic acid tetramethyl ester and the like. As the polyvalent carboxylic acid ester in the present invention, a lower alkyl ester having 6 or less carbon atoms such as methyl ester or ethyl ester is preferably used.

(A ³ ) The polyvalent carboxylic acid having 4 to 20 carbon atoms and / or the polyvalent carboxylic acid ester is (A)
It is used in the range of 5 to 70% by weight as a constitutional unit of the polyether ester. If it is less than 5% by weight, the molecular weight of the (A) polyetherester does not grow. It is not preferable because it has poor antistatic performance.

The method for producing the (A) polyester elastomer in the present invention is not particularly limited, but a method in which an ordinary lactone ring-opening polymerization and a production method for a condensed thermoplastic polyester are used in combination is preferably used. The ring-opening polymerization of lactone is not particularly limited, but a temperature range of 100 to 220 ° C. using glycol or the like as an initiator,
A method of polymerizing in a molten state in the presence of a suitable polymerization catalyst is preferably used.

The method for producing the condensation type thermoplastic polyester is not particularly limited, but the esterification reaction of the polyvalent carboxylic acid and / or the transesterification reaction of the polyvalent carboxylic acid ester and the glycol are carried out in the first step of the reaction. The method of conducting polycondensation under high temperature and reduced pressure in the subsequent second step is preferably a combination of ring-opening polymerization of lactone and condensation thermoplastic polyester production method which are preferably used, and ring-opening polymerization of lactone can be carried out in advance. A method of using the polymer of the lactone thus obtained as a constituent component of the polyester elastomer (A) and a method of simultaneously performing ring-opening polymerization of the lactone monomer in the first stage of the production of the condensation thermoplastic polyester can be used.

The number average molecular weight of the (A) polyester elastomer in the present invention is not particularly limited,
The number average molecular weight converted to standard polystyrene using gel permeation chromatography (chloroform) is 5,
000 to 500,000, preferably 20,000 to 2
Those in the range of 0,000 are used.

The (A) polyester elastomer of the present invention has a standard polystyrene equivalent number average molecular weight of 5,000.
If it is less than 0, mechanical strength and heat resistance are significantly inferior.
If it exceeds 20,000, there is a problem that an insoluble and infusible gel compound derived from branching of the polymer exists, which is not preferable.

In the production of the (A) polyester elastomer in the present invention, a catalyst is usually used in the first stage esterification reaction, the transesterification reaction, the second stage polycondensation and the lactone ring-opening polymerization.

It is known that a large number of compounds are effective for these catalysts. Particularly, in the first step, the ring-opening polymerization of an alkali metal or alkaline earth metal acetate salt, and in the second step, zinc Compounds of manganese, manganese, cobalt, antimony, germanium, titanium, and tin are used, and tetraalkyl titanate is preferably used as a catalyst particularly effective for all transesterification reactions and ring-opening polymerization of lactones. Catalyst is 0.005-0.2% by weight based on all reaction raw materials
Used in. The antioxidant can be added during the production of the polyester elastomer or at any time after the production, but for example, it inhibits the polycondensation reaction to prevent the oxidative deterioration of the polyester elastomer at the time of entering the polycondensation step of the second step. It is desirable to add antioxidants that do not.

As these antioxidants, there may be used phosphoric acid, aliphatic or aromatic esters of phosphorous acid, or phenolic derivatives, especially so-called hindered phenols having a group showing a high degree of steric hindrance. Further, it is also preferable to use several kinds of stabilizers such as antioxidants and ultraviolet absorbers in combination.

The (B) optional thermoplastic resin in the present invention is not particularly limited, but a thermoplastic polyester resin,
Polycarbonate resin, polystyrene resin, poly (styrene-acrylonitrile-butadiene) copolymer (A
BS resin) and high impact polystyrene (HIPS)
Styrenic copolymers such as resins, acrylic resins, polyamide resins, polyphenylene ether resins, polyethylene,
Polyolefin resins and their copolymers represented by polypropylene and polyvinyl chloride, polyoxymethylene resins, polyphenylene sulfide resins, polysulfone resins, polyether sulfone resins, polyimide resins, polyglutarimide resins, etc., and resin blends thereof. I can list things.

The sulfonic acid metal salt represented by the formula [I] (C) in the present invention is a sulfonic acid in which R is an alkyl group or an alkylaryl group or an aryl group and M is an alkali metal or an alkaline earth metal. Any metal salt may be used, but it is particularly preferable that R is selected from an alkyl group or an alkylaryl group having about 8 to 30 carbon atoms, and M is selected from Na, K, Li, Mg, Ca and the like.

Specific examples of such sulfonic acid metal salts include sodium octyl sulfonate, sodium nonyl sulfonate, sodium decyl sulfonate, sodium dodecyl sulfonate, sodium octadecyl sulfonate, sodium decyl benzene sulfonate, dodecyl benzene sulfonate. Sodium acid salt, sodium stearylbenzenesulfonate, sodium octylbenzenesulfonate, sodium octylnaphthalenesulfonate, sodium dodecylnaphthalenesulfonate, potassium dodecylsulfonate, potassium dodecylbenzenesulfonate, potassium dodecylnaphthalenesulfonate, lithium dodecylsulfonate, dodecylsulfonate Lithium benzene sulfonate, magnesium dodecyl sulfonate, calcium dodecyl sulfonate And the like.

Among them, sodium dodecyl sulfonate,
Sodium dodecylbenzene sulfonate is preferably used.

For the antistatic resin composition of the present invention, if necessary, an antistatic agent other than the known sulfonic acid metal salt represented by the formula [I], black carbon, metal salt, metal powder, etc. may be used. Conductive substance, flame retardant, heat stabilizer, oxidation stabilizer,
Light stabilizers, lubricants, pigments, dyes, UV absorbers, anti-fog agents,
Plasticizer or glass fiber, fibrous reinforcing agent such as potassium whisker, talc, mica, calcium carbonate,
One or more particulate reinforcing agents such as clay, titanium oxide and glass flakes may be mixed.

The method for producing the antistatic resin composition of the present invention is not particularly limited, but 1 to 30 parts by weight of (A) polyester elastomer may be used according to this application.
(B) 99-70 parts by weight of an arbitrary thermoplastic resin and (C) 0-5 parts by weight of the sulfonic acid metal salt represented by the formula [I], and the total of (A), (B) and (C) is 100 parts by weight. It can be easily produced by adding various known additives, if necessary, and then melt-kneading by a commonly used method.

Among them, after melt-kneading with an extruder,
A method of manufacturing various molded parts, fibers, films, sheets and the like according to a conventional method is preferable because it can be adopted without any trouble.

[Examples] Hereinafter, the antistatic resin composition of the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto. In the following examples,% and parts represent% by weight and parts by weight, respectively.

Production Example 1 [Production of Polyester Elastomer (1)] Poly (ε-caprolactone) having a number average molecular weight of 2,000 and using ethylene glycol as an initiator in a flask equipped with a temperature controller, a nitrogen inlet tube, and a stirrer. ) 100 parts, dimethyl terephthalate 100 parts, 1,4-butanediol 60 parts and titanium tetrabutoxide 0.1 part as a catalyst were charged, and the mixture was stirred for 2 hours at 180 ° C. under a nitrogen inflow while removing methanol. Continued.

Then triphenyl phosphate 0.05
After adding 1 part, the reaction was allowed to proceed at 240 ° C. for 4 hours while removing excess distillate such as 1,4-butanediol under a reduced pressure of 1 mmHg or less. The polystyrene-reduced number average molecular weight of this product using gel permeation chromatography was 90,000.

Production Example 2 [Production of Polyester Elastomer (2)] 100 parts of ε-caprolactone was added to the same apparatus as in Production Example 1.
10 parts of 1,4-butanediol and 0.1 part of titanium tetrabutoxide were charged, and ring-opening polymerization of ε-caprolactone was performed at 180 ° C. for 2 hours, followed by 60 parts of dimethyl terephthalate and 3 parts of pyromellitic dianhydride. And 1,
4-butanediol (40 parts) was added and nitrogen inflow was performed 180
Stirring was continued while removing methanol at 2 ° C. for 2 hours.

Then triphenyl phosphate 0.05
After adding 1 part, while removing excess distillate such as 1,4-butanediol under a reduced pressure of 1 mmHg or less, at 4O 0 C for 4 hours.
The reaction was allowed to proceed over time. The polystyrene-reduced number average molecular weight of this product using gel permeation chromatography was 121,000.

Production Example 3 [Production of Polyester Elastomer (3)] 80 parts of ε-caprolactone, 20 parts of dimethylpropiolactone, 10 parts of 1,4-cyclohexanedimethanol and titanium tetrabutoxide of 0 were placed in the same apparatus as in Production Example 1. 1 part was charged, the ring-opening polymerization of the lactone monomer was performed at 180 ° C. for 2 hours, and then dimethyl terephthalate 8 was added.
0 parts, 1,2,4-trimellitic acid 5 parts and 1,4-
Cyclohexanedimethanol (55 parts) was added, and the stirring was continued for 2 hours at 180 ° C. while flowing nitrogen, while removing methanol.

Then triphenyl phosphate 0.05
After adding 1 part, excess 1,4-cyclohexanedimethanol was distilled off under reduced pressure of 1 mmHg or less, and the reaction was allowed to proceed at 240 ° C. for 4 hours. The polystyrene-reduced number average molecular weight of this product using gel permeation chromatography was 158,000.

The polyester elastomers (1) to (3) obtained in Production Examples 1 to 3, the following thermoplastic resins and sodium alkylsulfonate were used in Examples 1 to 10 and Comparative Examples 1 to 4. ABS resin [manufactured by Daicel Chemical Industries Ltd., Sebian V300, hereinafter referred to as ABS-V]
Polybutylene terephthalate [manufactured by Polyplastics Co., Ltd., Duranex 2000, hereinafter referred to as PBT] sodium alkylsulfonate [Nippon Kogyo Co., Ltd.]
Manufactured by Atrai AS1000, hereinafter referred to as AS1000].

Examples 1 to 10 Polyester elastomers (1) to (3) obtained in Production Examples 1 to 3, ABS-V, PBT and AS100.
0 was weighed in the proportions shown in Table 1, the same amounts of known antioxidants and lubricants were added, put in polyethylene bags and dry blended for 20 minutes using a V-type blender.

The resin mixture after blending is treated by Osaka Seiki Co., Ltd.
It was kneaded and extruded at 260 ° C. using a 40 mmφ single-screw extruder.

During extrusion, neither venting nor surging was observed. The extruded strand was cooled in a water bath and pelletized.

The pellets were dried in a hot air dryer at 90 ° C. for 4 hours, and then injection molding machine TS manufactured by Nissei Plastic Co., Ltd.
-100 type test piece for physical property measurement, tensile test / ASTM Danben (No.2), bending test and Izod impact test 1 /
Molded into 4 "bar and color plate for surface resistivity test. Of these molded specimens were ASTM dumbbells
The 1/4 "bar was left in an air-conditioned room at 23 ° C x 60% RH for 24 hours, and then the physical properties were evaluated. For the color plate, the surface resistivity was measured 1 hour after molding, and then the surface was washed with water. The surface resistivity was measured again after leaving it in the air-conditioned room for 1 month after wiping off the moisture, and the results of the measured physical properties and surface resistivity and the surface appearance of the molded test piece are shown in Table 1 and Table 2. did.

These antistatic resin compositions have excellent durability and antistatic property with almost no change in surface resistivity even after washing with water, and have high mechanical strength, appearance of molded articles,
The extrusion workability was also satisfactory.

Comparative Examples 1-4 For comparison, ABS-V, PBT and AS1000.
Were weighed in the proportions shown in Table 1, and were dry-blended, kneaded and extruded in the same manner as in Examples 1 to 10.
Molding and physical property measurement were performed. The results thus measured are shown in Table 3. ABS-V, P added with AS1000
Both BTs have good surface resistivity after 1 hour of molding, but after washing with water, they have almost the same values as the original resin, and there is a problem that the surface of the molded piece is slightly sticky.

Table-1 Example 1 2 3 4 5 6 Poe (1) 10 5 10 20 Lila S (2) 5 10 Stoma (3) 10 Lu ｜ AS1000 2 2 2 2 2 Heatable ABS-V 90 93 88 78 93 88塑of PBT resins tensile strength 340 360 330 300 380 360 (Kg / cm2) tensile elongation (%)>200>200>200>200>200> 200 flexural modulus 14000 16000 13000 11000 17000 16000 ( Kg / cm2) Izod impact test 50 42 45 58 32 40 (Kg · cm / cm) 1 hour after molding 1 × 10 ¹⁴ 1 × 10 ¹² 1 × 10 ¹¹ 7 × 10 ¹⁰ 9 × 10 ¹² 4 × 10 ¹¹ surface resistivity (Omega) surface ^{1 × 10 14 3 × 10 12} 1 × 10 11 6 × 10 10 2 × 10 13 8 × 10 11 specific resistance (Omega) surface appearance ○ ○ ○ ○ ○ ○ Table 2 embodiment after washing with water example 7 8 9 10 Poyet (1) 10 lire (2) 5 10 S. (parts by weight) strike (3) 10 THEMA Le | AS1000 2 2 2 heat Allowed ABS-V 88塑(parts by weight) of PBT 90 93 88 tree fat tensile strength 350 440 490 460 (Kg / cm2 ) tensile elongation (%)> 200 80 35 40 flexural modulus 15000 16000 19000 17000 (Kg / cm2 ) Izod impact test 38 7 3 5 (Kg · cm / cm) molded Surface resistivity of time after ^{3 × 10 11 9 × 10 13} 5 × 10 12 4 × 10 11 (Ω) surface ^{5 × 10 11 3 × 10 14} 7 × 10 12 6 × 10 11 Specific resistance after washing (Omega) surface appearance ○ ○ ○ ○ Table 3 Comparative example 1 2 3 4 AS1000 2 2 heat Allowed ABS-V 100 98塑(parts by weight) of PBT 100 98 tree fat tensile strength 370 510 360 500 (Kg / cm2 ) tensile elongation (%)> 200 40> 200 30 Flexural modulus 17000 20000 15000 18000 (Kg / cm2) Izod impact test 45 3 38 3 (Kgcm / cm) 1 hour after forming Infinity Infinity 8 × 10 ¹¹ 9 × Surface resistivity of 10 ¹¹ (Ω) Surface after washing (Ω) Infinity Infinity 7 × 10 ¹⁵ 1 × 10 ¹⁶ Specific resistance Surface appearance ○ ○ △ △

[0052]

EFFECTS OF THE INVENTION Conventionally, ionic low molecular weight compounds and hydrophilic polymers have been used in order to make a thermoplastic resin antistatic. However, the antistatic effect is remarkably reduced by washing with water and the physical properties of a molding resin are deteriorated. Had a problem with. The antistatic resin composition of the present invention has excellent durable antistatic property, gloss, surface appearance and mechanical strength by mixing with a specific polyester elastomer, and has various molded parts, fibers and films. It can be used on sheets, etc. without any problems. (Below margin)

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location C08L 71/02 LQE 9167-4J C09K 3/16

Claims (1)

[Claims] 1. (A) (a ¹ ) number average molecular weight of 200 to 2
0,000 of the poly-valent carboxylic acid (alkylene oxide) glycol (a ²⁾ glycol having 2 to 8 carbon atoms (a ³⁾ 4 to 20 carbon atoms and /
Alternatively, with respect to 1 to 30 parts by weight of a polyether ester obtained by condensing a polyvalent carboxylic acid ester body, (B) an optional thermoplastic resin 99 to 70 parts by weight (C) the following formula (I) R-SO ₃ M sulfonic acid metal salt represented by (I) << wherein R represents an alkyl group or an alkylaryl group or aryl group, and M represents an alkali metal or an alkaline earth metal >> 0-5 An antistatic resin composition, characterized by being mixed in parts by weight.