JP2013213195A - Antistatic agent and antistatic resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antistatic agent giving permanent antistaticity to a molding without affecting appearance of the molding and physical properties of the molding such as mechanical strength, heat-sealability, etc.SOLUTION: An antistatic agent (X) includes a block polymer (A) in which a block of polyolefin (a), a block of polyisobutylene (aa) and a block of a hydrophilic polymer (b) with a volume resistivity value of 1×10to 1×10Ω cm are bonded through at least one bond selected from the group consisting of an ester bond, amide bond, ether bond, imide bond and urethane bond, where (a) is a polyolefin except polyisobutylene, and (A) is a polymer having a structure in which (a), (aa) and (b) are bonded in a format expressed by general formula (1): Z-[b]-{[a]-[b]}-Z. In formula, [a] is a block of the polyolefin (a); [b] is a block of the hydrophilic polymer (b); Zand Zeach independently a block [aa] of [a] or polyisobutylene (aa), provided that there is no case that both Zand Zare [a]; and n is a number of 1 to 30.

Description

  The present invention relates to an antistatic agent and an antistatic resin composition. More specifically, an antistatic agent that imparts excellent permanent antistatic properties to the molded article without impairing the mechanical properties and good appearance of the thermoplastic resin molded article, and an antistatic resin composition containing the same. About.

Conventionally, the most common method for imparting antistatic properties to a highly insulating thermoplastic resin is a method in which a small amount of a surfactant is kneaded into the thermoplastic resin. However, the antistatic property of the molded product of the resin composition obtained by the addition of the surfactant is effective when the low molecular weight surfactant bleeds out on the surface of the molded product. For example, the antistatic effect is lost, and it is difficult to maintain permanent antistatic properties. On the other hand, methods for imparting permanent antistatic properties to thermoplastic resins include (1) a method of kneading a conductive filler such as carbon black, and (2) a method of kneading a polymer type antistatic agent. ing. In order to exhibit the antistatic effect by the method (1), it is generally necessary to add a large amount of conductive filler, the resin composition has a problem in workability, and the obtained molded product has an impact resistance. There was a problem that it was inferior in mechanical strength, such as property.
As the method (2), a polymer type antistatic agent such as polyether ester amide (for example, see Patent Document 1) or polyether / polyolefin block polymer (for example, see Patent Document 2) is compared in a resin. A method of kneading a small amount is known.
However, the above-described method of kneading the polymer type antistatic agent has a problem that the physical properties of the molded product such as mechanical strength and heat sealability of the molded product are deteriorated.

Japanese Patent Laid-Open No. 08-12755 JP 2001-278985 A

  An object of the present invention is to provide an antistatic agent that imparts sufficient permanent antistatic properties to the molded product without impairing the molded product physical properties such as appearance, mechanical strength, and heat sealability of the molded product, and antistatic properties containing the same. The object is to provide a resin composition.

The inventor of the present invention has arrived at the present invention as a result of intensive studies to solve the above problems. That is, the present invention includes a polyolefin (a) block, a polyisobutylene (aa) block, a hydrophilic polymer (b) block having a volume resistivity of 1 × 10 ⁵ to 1 × 10 ¹¹ Ω · cm, Is an antistatic agent (X) comprising a block polymer (A) bonded via at least one bond selected from the group consisting of an ester bond, an amide bond, an ether bond, an imide bond and a urethane bond. (A) is a polyolefin excluding polyisobutylene, and (A) is a polymer having a structure in which (a), (aa), and (b) are bonded in the form represented by the following general formula (1). Antistatic agent.
^{Z 1 - [b] - {} [a] - [b]} n -Z 2 (1)
[[A] is a block of polyolefin (a); [b] is a block of hydrophilic polymer (b); Z ¹ and Z ² are each independently [a] or a block [aa] of polyisobutylene (aa). Thus, neither Z ¹ nor Z ² can be [a]; n is a number from 1 to 30. ]
An antistatic resin composition comprising an antistatic agent (X) and a thermoplastic resin (B); a molded article formed by molding the composition; and the molded article is coated and / or printed. This is a molded article.

The antistatic agent and antistatic resin composition of the present invention have the following effects.
(1) The antistatic agent of the present invention can impart excellent permanent antistatic properties to a molded product.
(2) A molded product formed by molding the antistatic resin composition of the present invention is excellent in molded product properties such as appearance, mechanical strength and heat sealability.

[Polyolefin (a)]
The polyolefin (a) in the present invention is a polyolefin excluding polyisobutylene, and (a) is a polyolefin in which carboxyl groups are introduced at both ends of the polyolefin (a-01) excluding polyisobutylene capable of modifying both ends ( a1), polyolefin (a2) having hydroxyl groups introduced at both ends of (a-01), polyolefin (a3) having amino groups introduced at both ends of (a-01), and isocyanate at both ends of (a-01) And polyolefin (a4) into which a group is introduced.
Of these, (a1) is preferable from the viewpoint of ease of modification.
In addition, the terminal in this invention means the terminal part which the longest repeating structure (main chain) of the monomer unit which comprises a polymer interrupts. Moreover, both ends mean both ends in the main chain of the polymer, and one end means any one end in the main chain of the polymer.

As (a-01), one or a mixture of two or more olefins having 2 to 30 carbon atoms (preferably 2 to 12, more preferably 2 to 10 carbon atoms) (excluding polyisobutylene) (co) Polymerization [(Co) polymerization means polymerization or copolymerization. The same applies below. ] Obtained by (polymerization method) and degraded polyolefin {high molecular weight [preferably number average molecular weight (hereinafter abbreviated as Mn) 50,000 to 150,000] polyolefin mechanically, thermally or chemically Degraded (degradation method)} and the like.
Examples of the α-olefin excluding isobutylene having 2 to 30 carbon atoms include ethylene, propylene, 1-butene, 4-methyl-1-pentene, 1-pentene, 1-octene, 1-decene, 1-dodecene and 1-icosene. And 1-tetracocene.
Examples of the diene having 4 to 30 carbon atoms include butadiene, isoprene, cyclopentadiene and 1,11-dodecadiene.
Of the olefins excluding isobutylene having 2 to 30 carbon atoms, ethylene, propylene, α-olefins having 4 to 12 carbon atoms, butadiene, isoprene and mixtures thereof are preferable from the viewpoint of molecular weight control, and more preferable. , Ethylene, propylene, α-olefins having 4 to 10 carbon atoms, butadiene and mixtures thereof, particularly preferred are ethylene, propylene, butadiene and mixtures thereof.

  Of (a-01), preferred is a degraded polyolefin, and more preferred is heat reduction, from the viewpoint of ease of introduction and availability of carboxyl group, hydroxyl group, amino group or isocyanate group. Polyolefin produced. According to thermal degradation, a low molecular weight polyolefin having an average number of terminal double bonds per molecule of 1.5 to 2 is easily obtained as described later, and the low molecular weight polyolefin is a carboxyl group, hydroxyl group, amino group or It is easy to modify by introducing an isocyanate group or the like.

The Mn of the polymer in the present invention can be measured under the following conditions using gel permeation chromatography (GPC).
Apparatus (example): “HLC-8120” [manufactured by Tosoh Corporation]
Column (example): “TSKgelGMHXL” (2 pieces)
"TSKgelMultiporeHXL-M" (1 pc.)
Sample solution: 0.3 wt% orthodichlorobenzene solution Solution injection amount: 100 μl
Flow rate: 1 ml / min Measurement temperature: 135 ° C
Detector: Refractive index detector Reference material: Standard polystyrene (TSK standard POLYSTYRENE) 12 points (Molecular weight: 500, 1,050, 2,800, 5,970, 9,100, 18,100, 37,900, 96,400) , 190,000, 355,000, 1,090,000, 2,890,000) [manufactured by Tosoh Corporation]

  The thermally degraded polyolefin is obtained by heating a high molecular weight polyolefin in an inert gas (at 300 to 450 ° C. for 0.5 to 10 hours, for example, as described in JP-A-3-62804). Obtained by the method), heat-degraded by heating in air, and the like.

  The high molecular weight polyolefin used in the thermal degradation method is one or a mixture of two or more types of olefins excluding isobutylene having 2 to 30 carbon atoms (preferably 2 to 12, more preferably 2 to 10 carbon atoms). Co) polymer [Mn is preferably 12,000 to 100,000, more preferably 15,000 to 70,000. The melt flow rate (hereinafter abbreviated as MFR. The unit is g / 10 min) is preferably 0.5 to 150, more preferably 1 to 100. ] Etc. are mentioned. Here, MFR is a numerical value representing the melt viscosity of the resin, and the larger the numerical value, the lower the melt viscosity. The MFR measurement method conforms to the method defined in JIS K7210. For example, in the case of polypropylene, it is measured under conditions of 230 ° C. and a load of 2.16 kgf.

Mn of (a-01) is preferably 800 to 20,000, more preferably 1,000 to 10,000, and particularly preferably 1,200 to 6 from the viewpoint of the antistatic property of the molded product described later. , 000.
The number of terminal double bonds in (a-01) is preferably 1-40 per 1,000 carbon atoms, more preferably 2-30, particularly preferably from the viewpoint of antistatic properties of the molded product. Is 4-20.

  (A-01) The average number of terminal double bonds per molecule is preferably from the viewpoint of the ease of taking a repeating structure in the molecule, the antistatic property of the molded product, and the thermoplasticity of the block polymer (A) described later. Is 1.1 to 5, more preferably 1.3 to 3, particularly preferably 1.5 to 2.5, and most preferably 1.8 to 2.2.

  When a method of obtaining a low molecular weight polyolefin by a thermal degradation method is used, (a1-1) in which the average number of terminal double bonds per molecule is 1.5 to 2 (a1-1) in the range of Mn 800 to 6,000. [Katsuhide Murata, Tadahiko Makino, Journal of the Chemical Society of Japan, page 192 (1975)].

  Hereinafter, (a1) to (a4) having a carboxyl group, a hydroxyl group, an amino group, or an isocyanate group at both ends of the polyolefin (a-01) excluding polyisobutylene will be described.

  As the polyolefin (a1) having carboxyl groups at both ends of (a-01), the end of (a-01) is α, β-unsaturated carboxylic acid (anhydride) (α, β-unsaturated carboxylic acid, The polyolefin (a1-1) and (a1-1) having a structure modified with an alkyl (1 to 4 carbon ester) or an anhydride thereof, and the like, and the like are secondary modified with a lactam or an aminocarboxylic acid. Polyolefin (a1-2) having the above structure, polyolefin (a1-3) having a structure obtained by modifying (a-01) by oxidation or hydroformylation, and (a1-3) secondarily modified with lactam or aminocarboxylic acid And polyolefin (a1-4) having the above structure and a mixture of two or more thereof.

(A1-1) can be obtained by modifying (a-01) with an α, β-unsaturated carboxylic acid (anhydride).
Examples of α, β-unsaturated carboxylic acids (anhydrides) used for modification include monocarboxylic acids, dicarboxylic acids, mono- or dicarboxylic acid alkyl (C 1-4) esters, and mono- or dicarboxylic acid anhydrides. Specifically, (meth) acrylic acid [(meth) acrylic acid means acrylic acid or methacrylic acid. The same applies below. ], Methyl (meth) acrylate, butyl (meth) acrylate, maleic acid (anhydride), dimethyl maleate, fumaric acid, itaconic acid (anhydride), diethyl itaconate and citraconic acid (anhydride) It is done.
Of these, dicarboxylic acid, mono- or dicarboxylic acid alkyl ester, and mono- or dicarboxylic acid anhydride are preferable from the viewpoint of ease of modification, and maleic acid (anhydride) and fumaric acid are more preferable. Particularly preferred is maleic acid (anhydride).

The amount of α, β-unsaturated carboxylic acid (anhydride) used for modification is based on the weight of polyolefin (a-01) excluding polyisobutylene, ease of repetitive structure in the molecule, and antistatic of molded products From the viewpoint of the properties and dispersibility of the block polymer (A) in the antistatic resin composition described later, it is preferably 0.5 to 40% by weight, more preferably 1 to 30% by weight, particularly preferably 2 to 2. 20% by weight.
The modification with α, β-unsaturated carboxylic acid (anhydride) is performed by, for example, converting the terminal double bond of (a-01) to α, β-unsaturated carboxylic acid by either a solution method or a melting method. (Anhydride) can be thermally added (ene reaction), and the reaction temperature is preferably 170 to 230 ° C.

(A1-2) can be obtained by secondary modification of (a1-1) with a lactam or an aminocarboxylic acid.
Examples of the lactam used for the secondary modification include lactams having 6 to 12 carbon atoms (preferably 6 to 8, more preferably 6), and specifically include caprolactam, enantolactam, laurolactam, undecanolactam, and the like. Is mentioned.
Examples of the aminocarboxylic acid include aminocarboxylic acids having 2 to 12 carbon atoms (preferably 4 to 12 and more preferably 6 to 12), and specifically include amino acids (glycine, alanine, valine, leucine, isoleucine). And phenylalanine), ω-aminocaproic acid, ω-aminoenanthic acid, ω-aminocaprylic acid, ω-aminopergonic acid, ω-aminocapric acid, 11-aminoundecanoic acid and 12-aminododecanoic acid.
Of the lactams and aminocarboxylic acids, caprolactam, laurolactam, glycine, leucine, ω-aminocaprylic acid, 11-aminoundecanoic acid and 12-aminododecanoic acid are preferred, and caprolactam, laurolactam, Omega-aminocaprylic acid, 11-aminoundecanoic acid and 12-aminododecanoic acid, particularly preferred are caprolactam and 12-aminododecanoic acid.

  The amount of lactam or aminocarboxylic acid used for the secondary modification is determined based on the weight of the substance (a1-1) to be modified, the ease of taking a repeating structure in the molecule, the antistatic property of the molded product, and the block polymer (A ) Is preferably 0.5 to 200% by weight, more preferably 1 to 150% by weight, and particularly preferably 2 to 100% by weight.

(A1-3) can be obtained by introducing a carboxyl group by a method of oxidizing (a-01) with oxygen and / or ozone (oxidation method) or hydroformylation by an oxo method.
The introduction of the carboxyl group by the oxidation method can be performed by a known method, for example, the method described in US Pat. No. 3,692,877. The introduction of a carboxyl group by hydroformylation can be carried out by a known method such as Macromolecules, VOL. 31, 5943 page.
(A1-4) can be obtained by secondary modification of (a1-3) with lactam or aminocarboxylic acid.
Examples of the lactam and aminocarboxylic acid include those exemplified as the lactam and aminocarboxylic acid used for the secondary modification of the above (a1-1), and preferred ranges and use amounts thereof are also the same.

Mn of (a1-1) is preferably 800 to 25,000, more preferably 1,000 to 20,000, particularly from the viewpoint of heat resistance and reactivity with the hydrophilic polymer (b) described later. Preferably it is 2,500-10,000.
The acid value of (a1-1) is preferably 4 to 280 mgKOH / g, more preferably from the viewpoint of reactivity with (b) and (c) described later and the thermoplasticity of the block polymer (A). Is 4 to 100 mgKOH / g, particularly preferably 5 to 50 mgKOH / g.

The polyolefin (a2) having a hydroxyl group at both ends of (a-01) has a hydroxyl group obtained by modifying the polyolefin (a1) having the carboxyl group at both ends of (a-01) with an amine having a hydroxyl group. Examples include polyolefins and mixtures of two or more thereof.
Examples of the amine having a hydroxyl group that can be used for modification include amines having a hydroxyl group having 2 to 10 carbon atoms, and specifically include 2-aminoethanol, 3-aminopropanol, 1-amino-2-propanol, 4-amino. Examples include butanol, 5-aminopentanol, 6-aminohexanol, and 3-aminomethyl-3,5,5-trimethylcyclohexanol.
Of these, amines having a hydroxyl group having 2 to 6 carbon atoms (2-aminoethanol, 3-aminopropanol, 4-aminobutanol, 5-aminopentanol and 6-amino are preferable from the viewpoint of ease of modification. Hexanol and the like), 2-aminoethanol and 4-aminobutanol are more preferable, and 2-aminoethanol is particularly preferable.

The amount of the amine having a hydroxyl group used for modification is based on the weight of the object to be modified (a1-1), the ease of taking a repeating structure in the molecule, the antistatic property of the molded product, and the antistatic resin composition described later. From the viewpoint of the dispersibility of the block polymer (A) and the mechanical properties of the molded product, it is preferably 0.5 to 50% by weight, more preferably 1 to 40% by weight, particularly preferably 2 to 30% by weight. It is.
Mn of (a2) is preferably 800 to 25,000, more preferably 1,000 to 20,000, particularly preferably from the viewpoint of heat resistance and reactivity with (b) and (c) described later. Is 2,500 to 10,000.
The hydroxyl value of (a2) is preferably 4 to 280 mgKOH / g, more preferably 4 to 100 mgKOH / g, from the viewpoint of reactivity with (b) described later and the thermoplasticity of the block polymer (A). Most preferably, it is 5-50 mgKOH / g.

Examples of the polyolefin (a3) having amino groups at both ends of (a-01) include polyolefins having amino groups obtained by modifying (a1) with diamine (S) and mixtures of two or more thereof.
Examples of the diamine (S) include diamines having 2 to 12 carbon atoms and bis (aminoalkyl) ethers having an alkyl group having 2 to 12 carbon atoms. Specific examples include ethylenediamine, hexamethylenediamine, and heptamethylenediamine. , Octamethylenediamine, decamethylenediamine, bis (2-aminoethyl) ether, bis (2-aminopropyl) ether, bis (3-aminopropyl) ether, bis (6-aminohexyl) ether and bis (12-amino) Dodecyl) ether and the like.
Among these, from the viewpoint of ease of modification, bis having 2 to 8 carbon atoms (ethylenediamine, hexamethylenediamine, heptamethylenediamine, octamethylenediamine, etc.) and alkyl groups having 2 to 8 carbon atoms are preferable. (Aminoalkyl) ether [bis (2-aminoethyl) ether, bis (2-aminopropyl) ether, bis (3-aminopropyl) ether and bis (6-aminohexyl) ether] and the like, and more preferred Ethylenediamine, hexamethylenediamine and bis (2-aminoethyl) ether, particularly preferred are ethylenediamine and bis (2-aminoethyl) ether.

  The amount of (S) used for the modification of (a1) is the ease of taking a repeating structure in the molecule, the antistatic property of the molded product, the dispersibility of the block polymer (A) in the antistatic resin composition, the molded product From the viewpoint of mechanical properties of (a1), it is preferably 0.5 to 50% by weight, more preferably 1 to 40% by weight, and particularly preferably 2 to 30% by weight based on the weight of (a1). The modification of (a1) with (S) is preferably 0.5 to 1,000% by weight, more preferably 1 to 1, based on the weight of (a1) from the viewpoint of preventing polyamide (imide) formation. A method is preferred in which 500% by weight, particularly preferably 2 to 300% by weight of (S) is used, and then unreacted (S) is removed at 120 to 230 ° C. under reduced pressure.

Mn of (a3) is preferably 800 to 25,000, more preferably 1,000 to 20,000, and particularly preferably 2,500, from the viewpoint of heat resistance and reactivity with (b) described later. -10,000.
The amine value of (a3) is preferably 4 to 280 mgKOH / g, more preferably 4 to 100 mgKOH / g, from the viewpoint of reactivity with (b) described later and the thermoplasticity of the block polymer (A). Most preferably, it is 5-50 mgKOH / g.

As the polyolefin (a4) having an isocyanate group at both ends of (a-01), a polyolefin having an isocyanate group in which (a2) is modified with poly (2 to 3 or more) isocyanate (hereinafter abbreviated as PI) and A mixture of two or more of these may be mentioned.
As PI, the number of carbon atoms (excluding the number of carbon atoms in the NCO group; the same shall apply hereinafter) 6-20 aromatic PI, C2-18 aliphatic PI, C4-15 alicyclic PI, carbon Included are araliphatic PIs of several 8-15, modified products of these PIs, and mixtures of two or more thereof.

  As aromatic PI, 1,3- or 1,4-phenylene diisocyanate, 2,4- or 2,6-tolylene diisocyanate (TDI), crude TDI, 2,4'- or 4,4'-diphenylmethane diisocyanate (MDI), 4,4'-diisocyanatobiphenyl, 3,3'-dimethyl-4,4'-diisocyanatobiphenyl, 3,3'-dimethyl-4,4'-diisocyanatodiphenylmethane and 1, Examples include 5-naphthylene diisocyanate.

  Aliphatic PIs include ethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate (HDI), dodecamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, lysine diisocyanate, 2,6-diisocyanatomethylcaproate, bis (2-isocyanatoethyl) fumarate, bis (2-isocyanatoethyl) carbonate, 2-isocyanatoethyl-2,6-diisocyanatohexanoate and the like.

  Alicyclic PI includes isophorone diisocyanate (IPDI), dicyclohexylmethane-4,4′-diisocyanate (hydrogenated MDI), cyclohexylene diisocyanate, methylcyclohexylene diisocyanate (hydrogenated TDI), bis (2-isocyanatoethyl) Examples include -4-cyclohexene-1,2-dicarboxylate and 2,5- or 2,6-norbornane diisocyanate.

  Examples of the araliphatic PI include m- or p-xylylene diisocyanate (XDI) and α, α, α ′, α′-tetramethylxylylene diisocyanate (TMXDI).

Examples of modified PI include urethane-modified, urea-modified, carbodiimide-modified, and uretdione-modified.
Among PIs, TDI, MDI and HDI are preferable, and HDI is more preferable.

The reaction between PI and (a2) can be carried out in the same manner as in a normal urethanization reaction.
The molar equivalent ratio (NCO / OH) of PI and (a2) is preferably 1.8 / 1 to 3/1, more preferably 2/1.
In order to accelerate the urethanization reaction, a catalyst usually used in the urethanization reaction may be used if necessary. Catalysts include metal catalysts {tin catalysts [dibutyltin dilaurate and stannous octoate, etc.], lead catalysts [lead 2-ethylhexanoate, lead octenoate, etc.], other metal catalysts [metal naphthenate (cobalt naphthenate) Etc.) and phenylmercurypropionate etc.}; amine catalysts {triethylenediamine, diazabicycloalkenes [1,8-diazabicyclo [5,4,0] undecene-7 etc.], dialkylaminoalkylamines (dimethylaminoethylamine and Dimethylaminooctylamine etc.), heterocyclic aminoalkylamine [2- (1-aziridinyl) ethylamine and 4- (1-piperidinyl) -2-hexylamine etc.] carbonate or organic acid (formic acid etc.) salt, N Methyl or ethylmorpholine, triethylamine and diethyl or dimethyl Ethanolamine}; and use of two or more types of system thereof.
The amount of the catalyst used is preferably 3% by weight or less, more preferably 0.001 to 2% by weight, based on the total weight of PI and (a2).

  Mn of (a4) is preferably 800 to 25,000, more preferably 1,000 to 20,000, and particularly preferably 2,500 from the viewpoint of heat resistance and reactivity with (b) described later. -10,000.

[Polyisobutylene (aa)]
The polyisobutylene (aa) in the present invention includes polyisobutylene (aa1) having a carboxyl group at one end of the polymer, polyisobutylene (aa2) having a hydroxyl group at one end of the polymer, and polyisobutylene (aa2) having an amino group at one end of the polymer. Examples include isobutylene (aa3) and polyisobutylene (aa4) having an isocyanate group at one end of the polymer. Of these, polyisobutylene (aa1) having a carboxyl group is preferable because of easy modification.

  As (aa1) to (aa4), a polyisobutylene whose one end can be modified is a main component (preferably a content of 50% by weight or more, more preferably 75% by weight or more, particularly preferably 80 to 100% by weight). Those obtained by introducing a carboxyl group, a hydroxyl group, an amino group or an isocyanate group into one end of polyisobutylene (aa0) are used.

As polyisobutylene (aa0) whose one end can be modified, from the viewpoint of the mechanical strength and heat sealability of a molded product of the antistatic resin composition described later, one end with Mn of 2,000 to 20,000 is modified. Possible polyisobutylenes are preferred.
Examples of the polyisobutylene whose one end can be modified include a homopolymer of isobutene and a copolymer of isobutene and n-butene.

Polyisobutylenes (aa1) to (aa4) having a carboxyl group, a hydroxyl group, an amino group or an isocyanate group at one end are polyolefins (a1) to (a4) having a carbonyl group, a hydroxyl group, an amino group or an isocyanate group at both ends. It can be obtained in a similar manner.
(Aa1) to (aa4) can be obtained in the same manner as (a1) to (a4) by replacing (a0) with (aa0) in the modification method of (a1) to (a4).

[Hydrophilic polymer (b)]
The hydrophilic polymer (b) in the present invention means a polymer having a volume resistivity value of 1 × 10 ⁵ to 1 × 10 ¹¹ Ω · cm. In addition, the volume resistivity value in this invention is a numerical value obtained by measuring in 23 degreeC and 50% RH atmosphere based on ASTMD257.
The volume resistivity value of (b) is preferably 1 × 10 ⁶ to 1 × 10 ⁹ Ω · cm, and more preferably 1 × 10 ⁶ to 1 × 10 ⁸ Ω · cm. Those having a volume resistivity of less than 1 × 10 ⁵ Ω · cm are substantially difficult to obtain, and if it exceeds 1 × 10 ¹¹ Ω · cm, the antistatic property of the molded product described later is lowered.
Examples of the hydrophilic polymer (b) include hydrophilic polymers described in Japanese Patent No. 3488163. Specifically, the polyether (b1), the polyether-containing hydrophilic polymer (b2), and the cationic polymer (b3). And an anionic polymer (b4).

Examples of the polyether (b1) include polyether diol (b1-1), polyether diamine (b1-2), and modified products (b1-3) thereof.
Examples of the polyether diol (b1-1) include those obtained by addition reaction of alkylene oxide (hereinafter abbreviated as AO) to the diol (b0). Specifically, the polyether diol (b1-1) is represented by the general formula (2). Can be mentioned.
H— (OR ¹ ) _a —O—E ¹ —O— (R ² O) _b —H (2)
E ¹ in the general formula (2) is a residue obtained by removing all hydroxyl groups from the diol (b0).
The diol (b0) includes an aliphatic dihydric alcohol having 2 to 12 carbon atoms, an alicyclic dihydric alcohol having 5 to 12 carbon atoms, an aromatic dihydric alcohol having 6 to 18 carbon atoms, and a tertiary amino group-containing diol. Etc.
Examples of the aliphatic dihydric alcohol having 2 to 12 carbon atoms include ethylene glycol (hereinafter abbreviated as EG), 1,2-propylene glycol (hereinafter abbreviated as PG), 1,4-butanediol (hereinafter, 1,4-butanediol). BD), 1,6-hexanediol (hereinafter abbreviated as 1,6-HD), neopentyl glycol (hereinafter abbreviated as NPG), and 1,12-dodecanediol.
Examples of the alicyclic dihydric alcohol having 5 to 12 carbon atoms include 1,4-di (hydroxymethyl) cyclohexane and 1,5-di (hydroxymethyl) cycloheptane.
Examples of the aromatic dihydric alcohol having 6 to 18 carbon atoms include monocyclic aromatic dihydric alcohols (xylylene diol, hydroquinone, catechol, resorcin, urushiol, bisphenol A, bisphenol F, bisphenol S, 4,4′-dihydroxy. Diphenyl-2,2-butane and dihydroxybiphenyl) and polycyclic aromatic dihydric alcohols (dihydroxynaphthalene, binaphthol and the like).
The tertiary amino group-containing diol includes aliphatic or alicyclic primary amines having 1 to 12 carbon atoms (methylamine, ethylamine, cyclopropylamine, 1-propylamine, 2-propylamine, pentylamine, isopentylamine. Bishydroxyalkylated products such as cyclopentylamine, hexylamine, cyclohexylamine, heptylamine, nonylamine, decylamine, undecylamine and dodecylamine) and aromatic primary amines having 6 to 12 carbon atoms (such as aniline and benzylamine) Bishydroxyalkylated products can be mentioned.
Of these, preferred are aliphatic dihydric alcohols having 2 to 12 carbon atoms and aromatic dihydric alcohols having 6 to 18 carbon atoms, and more preferred is EG from the viewpoint of reactivity with bishydroxyalkylated products. And bisphenol A.

R ¹ and R ² in the general formula (2) are each independently an alkylene group having 2 to 4 carbon atoms. Examples of the alkylene group having 2 to 4 carbon atoms include ethylene group, 1,2- or 1,3-propylene group and 1,2-, 1,3-, 1,4- or 2,3-butylene group. It is done.
A and b in General formula (2) are the numbers of 1-300 each independently, Preferably it is 2-250, More preferably, it is 10-100.
In the general formula (2), when a and b are each 2 or more, R ¹ and R ² may be the same or different, and the (OR ¹ ) _a and (R ² O) _b portions may be random bonds or block bonds. But you can.

The polyether diol (b1-1) can be produced by adding AO to the diol (b0).
As AO, C2-C4 AO [ethylene oxide (hereinafter abbreviated as EO), 1,2- or 1,3-propylene oxide (hereinafter abbreviated as PO), 1,2-, 1,3- 1,4- or 2,3-butylene oxide (hereinafter abbreviated as BO) and a combination system of two or more of these may be used, but if necessary, other AO [alpha-olefin oxide having 5 to 12 carbon atoms] Styrene oxide and epihalohydrin (such as epichlorohydrin) etc.] can be used in a small proportion (30 wt% or less based on the total weight of AO).
When two or more kinds of AO are used in combination, the bond form may be either random bond or block bond. Preferred as AO is EO alone or a combination of EO and another AO.

The addition reaction of AO can be performed by a known method, for example, at a temperature of 100 to 200 ° C. in the presence of an alkali catalyst.
The content ratio of (OR ¹ ) _a and (R ² O) _b based on the weight of the polyether diol (b1-1) represented by the general formula (2) is preferably 5 to 99.8% by weight. More preferably, it is 8 to 99.6% by weight, particularly preferably 10 to 98% by weight.
The content of the oxyethylene group based on the weight of (OR ¹ ) _a and (R ² O) _{b in} the general formula (2) is preferably 5 to 100% by weight, more preferably 10 to 100% by weight, Preferably it is 50-100 weight%, Most preferably, it is 60-100 weight%.

Examples of the polyether diamine (b1-2) include those represented by the general formula (3).
H ₂ N—R ³ — (OR ⁴ ) _c —O—E ² —O— (R ⁵ O) _d —R ⁶ —NH ₂ (3)
E ² in the general formula (3) is a residue obtained by removing all hydroxyl groups from the diol (b0). Examples of the diol (b0) include the same ones as described above, and preferred ranges thereof are also the same.
R ³ , R ⁴ , R ⁵ and R ⁶ in the general formula (3) are each independently an alkylene group having 2 to 4 carbon atoms. The alkylene group having 2 to 4 carbon atoms, the general formula (2) the same as those exemplified as R ¹ and R ² can be mentioned in the preferred range is also the same.
C and d in General formula (3) are the numbers of 1-300 each independently, Preferably it is 2-250, More preferably, it is 10-100.
R ⁴ and R ⁵ in the general formula (3) when c and d are each 2 or more may be the same or different, and the (OR ⁴ ) _c and (R ⁵ O) _d moieties may be random bonds or block bonds. But you can.

  The polyether diamine (b1-2) can be obtained by converting all the hydroxyl groups of the polyether diol (b1-1) into amino groups. For example, it can be produced by reacting (b1-1) with acrylonitrile and hydrogenating the obtained cyanoethylated product.

Modified products (b1-3) include (b1-1) or (b1-2) aminocarboxylic acid modified products (terminal amino groups), isocyanate modified products (terminal isocyanate groups) and epoxy modified products (terminal epoxy groups). Etc.
The aminocarboxylic acid-modified product can be obtained by reacting (b1-1) or (b1-2) with aminocarboxylic acid or lactam.
The isocyanate-modified product can be obtained by reacting (b1-1) or (b1-2) with polyisocyanate or reacting (b1-2) with phosgene.
The epoxy-modified product is obtained by reacting (b1-1) or (b1-2) with diepoxide (epoxy resins such as diglycidyl ether, diglycidyl ester and alicyclic diepoxide: epoxy equivalents 85 to 600). It can be obtained by reacting b1-1) with epihalohydrin (such as epichlorohydrin).

  Mn of the polyether (b1) is preferably 150 to 20,000, more preferably 300 to 18,000, and particularly preferably 1,000 to 20,000, from the viewpoint of heat resistance and reactivity with the polyolefin (a). 15,000, most preferably 1,200 to 8,000.

  As the polyether-containing hydrophilic polymer (b2), polyether ester amide (b2-1) having a segment of polyether diol (b1-1), polyether amide imide having a segment of (b1-1) (b2- 2), polyether ester (b2-3) having a segment of (b1-1), polyether amide (b2-4) having a segment of polyetherdiamine (b1-2) and (b1-1) or (b1 -2) polyether urethane (b2-5).

The polyether ester amide (b2-1) is composed of a polyamide (a1 ′) having a carboxyl group at both ends and a polyether diol (b1-1).
Examples of (a1 ′) include a ring-opening polymer of lactam (α1-1), a polycondensate of aminocarboxylic acid (α1-2), and a polyamide of the diamine (S) and dicarboxylic acid (γ). It is done.
Among (a1 ′), from the viewpoint of antistatic properties, a ring-opening polymer of caprolactam, a polycondensate of 12-aminododecanoic acid, and a polyamide of adipic acid and hexamethylenediamine are more preferable. Is a ring-opening polymer of caprolactam.

The polyether amide imide (b2-2) is composed of a polyamideimide (a3 ′) having at least one imide ring and a polyether diol (b1-1).
As (a3 ′), a polymer comprising lactam (α1-1) and a trivalent or tetravalent aromatic polycarboxylic acid (δ) capable of forming at least one imide ring, an aminocarboxylic acid (α1) -2) and (δ), the above-mentioned polyamide (a1 ′) and (δ), and mixtures thereof.
Examples of (α1-1) include lactams having 4 to 20 carbon atoms (caprolactam, enantolactam, laurolactam, undecanolactam, and the like).
(Δ) is a trivalent carboxylic acid [monocyclic trivalent carboxylic acid (such as trimellitic acid), polycyclic trivalent carboxylic acid (1,2,5- or 2,6,7-naphthalene tricarboxylic acid, 3, 3 ′, 4-biphenyltricarboxylic acid, benzophenone-3,3 ′, 4-tricarboxylic acid, diphenylsulfone-3,3 ′, 4-tricarboxylic acid and diphenylether-3,3 ′, 4-tricarboxylic acid) and the like Anhydrides] and tetravalent carboxylic acids [monocyclic tetravalent carboxylic acids (pyromellitic acid, etc.), polycyclic tetravalent carboxylic acids (biphenyl-2,2 ', 3,3'-tetracarboxylic acid, benzophenone-2,2 ', 3,3'-tetracarboxylic acid, diphenylsulfone-2,2', 3,3'-tetracarboxylic acid and diphenyl ether-2,2 ', 3,3'-tetracarboxylic acid, etc.) and their anhydrides object] And the like.
(Α1-2) is an aminocarboxylic acid having 2 to 20 carbon atoms (ω-aminocaproic acid, ω-aminoenanthic acid, ω-aminocaprylic acid, ω-aminopelargonic acid, ω-aminocapric acid, 11-amino. And undecanoic acid, 12-aminododecanoic acid, and mixtures thereof.

Examples of the polyether ester (b2-3) include those composed of polyester (Q) and polyether diol (b1-1).
Examples of (Q) include polyesters of dicarboxylic acid (γ) and the diol (b0).
Examples of the dicarboxylic acid (γ) include aliphatic dicarboxylic acids having 2 to 20 carbon atoms (succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, maleic acid. , Fumaric acid and itaconic acid), aromatic dicarboxylic acids having 8 to 20 carbon atoms (phthalic acid, 2,6- or 2,7-naphthalenedicarboxylic acid, diphenyl-4,4′-dicarboxylic acid, diphenoxyethanedicarboxylic acid) Acids, tolylene dicarboxylic acid, xylylene dicarboxylic acid and 5-sulfoisophthalic acid alkali metal salts, etc.), alicyclic dicarboxylic acids having 5 to 20 carbon atoms (cyclopropanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, cyclohexenedicarboxylic acid) Acid, dicyclohexyl-4,4′-dicarboxylic acid, camphoric acid and the like).

  Examples of the polyether amide (b2-4) include those composed of polyamide (a1 ') and polyether diamine (b1-2).

  As polyether urethane (b2-5), diisocyanate in the above PI, polyether diol (b1-1) or polyether diamine (b1-2) and, if necessary, chain extender [the diol (b0) and diamine (S) etc.].

From the viewpoint of moldability, the content of the polyether (b1) segment in the polyether-containing hydrophilic polymer (b2) is preferably 30 to 80% by weight, more preferably 40 to 40%, based on the weight of (b2). 70% by weight.
The content of the oxyethylene group in (b2) is preferably 30 to 80% by weight, more preferably 40 to 70% by weight, based on the weight of (b2), from the viewpoint of antistatic properties and moldability. .
The lower limit of Mn in (b2) is preferably 800 from the viewpoint of heat resistance, and more preferably 1,000. The upper limit of Mn in (b2) is preferably 50,000, more preferably 30,000, from the viewpoint of reactivity with the polyolefin (a).

Examples of the cationic polymer (b3) include a polymer having a cationic group separated by a nonionic molecular chain in the molecule.
The nonionic molecular chain includes a divalent hydrocarbon group, ether bond, thioether bond, carbonyl bond, ester bond, imino bond, amide bond, imide bond, urethane bond, urea bond, carbonate bond and siloxy bond. And a divalent hydrocarbon group having one or more groups selected from the above, and a hydrocarbon group having a heterocyclic structure having a nitrogen atom or an oxygen atom.
Among the nonionic molecular chains, a divalent hydrocarbon group and a divalent hydrocarbon group having an ether bond are preferable.
Examples of the cationic group include a group having a quaternary ammonium salt or a phosphonium salt. Examples of counter anions that form quaternary ammonium salts or phosphonium salts include super strong acid anions and other anions.
Examples of the super strong acid anion include an anion of a super strong acid (such as tetrafluoroboric acid and hexafluorophosphoric acid) derived from a combination of a protonic acid and a Lewis acid, and an anion such as trifluoromethanesulfonic acid.
Other anions include halogen ions (F ⁻ , Cl ⁻ , Br ⁻ and I ^{− and the} like), OH ⁻ , PO ₄ ⁻ , CH ₃ OSO ₄ ⁻ , C ₂ H ₅ OSO ₄ ⁻ , ClO ₄ ^{− and the} like. Can be mentioned.
Examples of the protonic acid that induces a super strong acid include hydrogen fluoride, hydrogen chloride, hydrogen bromide, and hydrogen iodide.
Examples of the Lewis acid include boron trifluoride, phosphorus pentafluoride, antimony pentafluoride, arsenic pentafluoride, and tantalum pentafluoride.
(B3) The number of cationic groups in one molecule is preferably 2 to 80, and more preferably 3 to 60.

  Specific examples of (b3) include cationic polymers described in JP-A No. 2001-278985.

  Mn of (b3) is preferably 500 to 20,000, more preferably 1,000 to 15,000, and particularly preferably 1,200 from the viewpoint of antistatic properties and reactivity with polyolefin (a). ~ 8,000.

The anionic polymer (b4) comprises a dicarboxylic acid (γ ′) having a sulfonyl group and a diol (b0) or a polyether (b1) as essential constituent units, and 2 to 80, preferably 3 to A polymer having 60 sulfonyl groups.
Examples of (γ ′) include those obtained by introducing a sulfonyl group into the dicarboxylic acid (γ), and only an aromatic dicarboxylic acid having a sulfonyl group, an aliphatic dicarboxylic acid having a sulfonyl group, and a sulfonyl group become a salt. And aromatic dicarboxylic acids or aliphatic dicarboxylic acids having a sulfonyl group.

Examples of the aromatic dicarboxylic acid having a sulfonyl group include 5-sulfoisophthalic acid, 2-sulfoisophthalic acid, 4-sulfoisophthalic acid, 4-sulfo-2,6-naphthalenedicarboxylic acid, and ester-forming derivatives thereof [alkyl (C1-C4) esters (such as methyl ester and ethyl ester) and acid anhydrides].
Examples of the aliphatic dicarboxylic acid having a sulfonyl group include sulfosuccinic acid and ester-forming derivatives thereof [alkyl (carbon number 1 to 4) ester (such as methyl ester and ethyl ester) and acid anhydrides].
Examples of the salt that forms an aromatic dicarboxylic acid or aliphatic dicarboxylic acid having a sulfonyl group in which only the sulfonyl group is converted to a salt include alkali metal (lithium, sodium, potassium, etc.) salts, alkaline earth metals (magnesium, calcium, etc.) Salts, ammonium salts, amines having alkyl (2-4 carbon atoms) or hydroxyalkyl (2-4 carbon atoms) groups (mono, di or triethylamine, mono, di or triethanolamine, diethylethanolamine, etc.), etc. Examples include amine salts and quaternary ammonium salts of the above amines.
Among these, preferred are aromatic dicarboxylic acids having a sulfonyl group, more preferred are 5-sulfoisophthalate, and particularly preferred are sodium 5-sulfoisophthalate and potassium 5-sulfoisophthalate. .

Of (b0) and (b1) constituting (b4), alkanediol having 2 to 10 carbon atoms, EG, polyethylene glycol (hereinafter abbreviated as PEG) (degree of polymerization 2 to 20), bisphenol (bisphenol) EO adduct (number of added moles: 2 to 60 mol) and a mixture of two or more of these.
As a manufacturing method of (b4), the normal polyester manufacturing method can be applied as it is. The polyesterification reaction is performed in a temperature range of 150 to 240 ° C. under reduced pressure, and the reaction time is preferably 0.5 to 20 hours. Moreover, you may use the catalyst used for normal esterification reaction as needed. Examples of esterification catalysts include antimony catalysts (such as antimony trioxide), tin catalysts (such as monobutyltin oxide and dibutyltin oxide), titanium catalysts (such as tetrabutyl titanate), zirconium catalysts (such as tetrabutylzirconate), and metal acetates Examples include catalysts (such as zinc acetate).

  Mn in (b4) is preferably 500 to 20,000, more preferably 1,000 to 15,000, and particularly preferably 1,200 from the viewpoint of antistatic properties and reactivity with polyolefin (a). ~ 8,000.

[Block polymer (A)]
The block polymer (A) in the present invention comprises a polyolefin (a) block, a polyisobutylene (aa) block, a hydrophilic polymer (b) having a volume resistivity of 1 × 10 ⁵ to 1 × 10 ¹¹ Ω · cm. ) Block is a block polymer bonded via at least one bond selected from the group consisting of an ester bond, an amide bond, an ether bond, an imide bond and a urethane bond, and is represented by the general formula (1) It is a polymer having a structure in which (a), (aa) and (b) are combined in form.
^{Z 1 - [b] - {} [a] - [b]} n -Z 2 (1)

In the general formula (1), [a] is a block of the polyolefin (a), and [b] is a block of the hydrophilic polymer (b).
Z ¹ and Z ² in the general formula (1) are each independently [a] or a block [aa] of polyisobutylene (aa), and neither Z ¹ nor Z ² becomes [a]. .
As combinations of Z ¹ and Z ² , (1) Z ¹ = [a], Z ² = [aa], (2) Z ¹ = [aa], Z ² = [a], (3) Z ¹ = [Aa], Z ² = [aa]. Among these, the combination (3) is preferable.

N in General formula (1) is a number of 1-30. From the viewpoint of antistatic properties and mechanical strength of a molded article of the antistatic resin composition described later, n is preferably 1 to 20, and more preferably 1 to 10.

The proportion of the block (a) constituting (A) is preferably 20 to 90 weight based on the weight of (A) from the viewpoint of antistatic property and water resistance of the molded product of the antistatic resin composition described later. %, More preferably 30 to 80% by weight.
The proportion of the block (aa) constituting (A) is based on the weight of (A) from the viewpoint of antistatic properties, mechanical strength, heat sealability and water resistance of the molded article of the antistatic resin composition described later. Preferably, it is 5 to 60% by weight, more preferably 10 to 40% by weight.
The proportion of the block (b) constituting (A) is preferably 10 to 80 based on the weight of (A) from the viewpoint of antistatic properties and water resistance of the molded product of the antistatic resin composition described later. % By weight, more preferably 20 to 70% by weight.

  The weight ratio of the block (a) and the block (aa) constituting (A) is from the viewpoint of antistatic property, mechanical strength, heat sealability and water resistance of the molded product of the antistatic resin composition described later. , Preferably 95/5 to 25/75, more preferably 70/30 to 30/70.

  The weight ratio of the block (a) and the block (b) constituting (A) is preferably 10/90 to from the viewpoint of antistatic properties and water resistance of the molded product of the antistatic resin composition described later. 80/20, more preferably 20/80 to 75/25.

  Mn of (A) is preferably from 2,000 to 1,000,000, more preferably from 4,000 to 1,000, from the viewpoint of mechanical properties and antistatic properties of the molded article of the antistatic resin composition described later. 500,000, particularly preferably 6,000 to 100,000.

When (A) has a structure in which the block of (a), the block of (aa) and the block of (b) are bonded via an ester bond, an amide bond, an ether bond or an imide bond, It can be manufactured by the method.
(A), (aa) and (b) are put into a reaction vessel, and agitated, esterified or imidized at a reaction temperature of 100 to 250 ° C. and a pressure of 0.003 to 0.1 MPa with stirring. The method of making it react for 1 to 50 hours, removing the water to produce | generate (it abbreviates as produced water hereafter) out of a reaction system is mentioned.
In the case of the esterification reaction, it is preferable to use 0.05 to 0.5% by weight of catalyst based on the weight of (a), (aa) and (b) in order to accelerate the reaction. Catalysts include inorganic acids (such as sulfuric acid and hydrochloric acid), organic sulfonic acids (such as methane sulfonic acid, paratoluene sulfonic acid, xylene sulfonic acid, and naphthalene sulfonic acid), and organometallic compounds (dibutyltin oxide, tetraisopropoxy titanate, bistrimethyl). Ethanolamine titanate and potassium oxalate titanate). When a catalyst is used, the catalyst can be neutralized as necessary after completion of the esterification reaction and treated with an adsorbent to remove and purify the catalyst. Examples of the method for removing the produced water from the reaction system include the following methods.
(1) A method of removing only generated water from the reaction system by azeotropically boiling the organic solvent and generated water under reflux using an organic solvent incompatible with water (for example, toluene, xylene, cyclohexane, etc.) .
(2) A method in which a carrier gas (for example, air, nitrogen, helium, argon, carbon dioxide, etc.) is blown into the reaction system, and the generated water is removed from the reaction system together with the carrier gas.
(3) A method of removing the generated water from the reaction system by reducing the pressure in the reaction system.

When (A) has a structure in which the block of (a), the block of (aa), and the block of (b) are bonded via a urethane bond or a urea bond, manufacture by the following method Can do.
There is a method in which (a) and (aa) are introduced into a reaction vessel, heated to 30 to 100 ° C. with stirring, and then (b) is introduced and reacted at the same temperature for 1 to 20 hours.
In order to promote the reaction, it is preferable to use 0.001 to 5% by weight of catalyst based on the weight of (a), (aa) and (b). Catalysts include organometallic compounds (dibutyltin dilaurate, dioctyltin dilaurate, lead octoate, bismuth octoate, etc.), tertiary amines {triethylenediamine, trialkylamines having 1-8 carbon atoms (trimethylamine, tributylamine). , And trioctylamine), diazabicycloalkenes [1,8-diazabicyclo [5,4,0] undecene-7] and the like}; and combinations of two or more thereof.

[Antistatic agent (X)]
The antistatic agent (X) of the present invention comprises a block polymer (A).

[Antistatic resin composition]
The antistatic resin composition of the present invention comprises an antistatic agent (X) contained in a thermoplastic resin (B).
(B) includes polyphenylene ether resin (B1) (PPE); polyolefin resin (B2) [polypropylene (PP), polyethylene (PE), ethylene-vinyl acetate copolymer resin (EVA), and ethylene-ethyl acrylate copolymer resin Etc.]; poly (meth) acrylic resin (B3) [polymethyl methacrylate and the like]; polystyrene resin (B4) [vinyl group-containing aromatic hydrocarbons alone and vinyl group-containing aromatic hydrocarbons, and (meth) acrylic acid Copolymers comprising one or more selected from the group consisting of esters, (meth) acrylonitrile and butadiene; for example, polystyrene (PS), styrene / acrylonitrile copolymer (AN resin), acrylonitrile / butadiene / styrene copolymer Polymer (ABS resin), methyl methacrylate / butadi / Styrene copolymer (MBS resin) and styrene / methyl methacrylate copolymer (MS resin)]; polyester resin (B5) [polyethylene terephthalate, polybutylene terephthalate, polycyclohexanedimethylene terephthalate, polybutylene adipate and polyethylene Adipate]; polyamide resin (B6) [nylon 66, nylon 69, nylon 612, nylon 6, nylon 11, nylon 12, nylon 46, nylon 6/66, nylon 6/12, etc.]; polycarbonate resin (B7) [polycarbonate and Polycarbonate / ABS alloy resin (PC / ABS) and the like]; polyacetal resin (B8), and a mixture of two or more thereof.
Among these, (B1), (B2), (B3), (B4) and (B7) are preferable from the viewpoint of the mechanical properties of the molded product described later and the dispersibility of (X) into (B). is there.

  The weight ratio of the antistatic agent (X) and (B) of the present invention is preferably 1/99 to 40/60, more preferably 5/95 to 20 /, from the viewpoint of antistatic properties and mechanical properties of the molded product. 80.

The antistatic resin composition of the present invention may further contain an antistatic improver (C) as long as the effects of the present invention are not impaired.
Examples of the antistatic property improver (C) include alkali metal or alkaline earth metal salt (C1), quaternary ammonium salt (C2), surfactant (C3), and ionic liquid (C4). (C1) to (C4) may be used in combination of two or more.

  Examples of the alkali metal or alkaline earth metal salt (C1) include alkali metals (lithium, sodium, potassium, etc.) or alkaline earth metals (magnesium, calcium, etc.) and organic acids [mono- or dicarboxylic acids having 1 to 7 carbon atoms] (Formic acid, acetic acid, propionic acid, oxalic acid, succinic acid and the like), sulfonic acids having 1 to 7 carbon atoms (methanesulfonic acid, trifluoromethanesulfonic acid, p-toluenesulfonic acid, etc.) and thiocyanic acid], and And salts of the organic acid and inorganic acid [hydrohalic acid (hydrochloric acid, hydrobromic acid, etc.), perchloric acid, sulfuric acid, nitric acid, phosphoric acid, etc.].

  As the quaternary ammonium salt (C2), amidinium (1-ethyl-3-methylimidazolium, etc.) or guanidinium (2-dimethylamino-1,3,4-trimethylimidazolinium, etc.) and the organic acid or inorganic Examples include salts with acids.

  Examples of the surfactant (C3) include known nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

  The ionic liquid (C4) is a compound excluding the above (C1) to (C3), has a melting point of 100 ° C. or lower, and at least one of the constituent cations or anions is an organic ion, and has an initial conductivity. Is 1 to 200 mS / cm (preferably 10 to 200 mS / cm), and specific examples include molten salts exemplified in WO95 / 15572.

The contents of (C1) and (C2) based on the weights of (X) and (B) are preferably 0.001 to 3 from the viewpoint of providing an antistatic property and a resin molded product having a good appearance without precipitation. % By weight, more preferably 0.01 to 2.5% by weight, particularly preferably 0.1 to 2% by weight, and most preferably 0.2 to 1% by weight.
Each content of (C3) and (C4) based on the weight of (X) and (B) is preferably 0.001 to 5 from the viewpoint of antistatic properties and a resin molded product having a good appearance without precipitation. % By weight, more preferably 0.01 to 3% by weight, and particularly preferably 0.1 to 2.5% by weight.

  The antistatic resin composition composition of the present invention can contain an additive (D) within a range that does not impair the effects of the present invention. (D) includes compatibilizer (D1), colorant (D2), mold release agent (D3), antioxidant (D4), flame retardant (D5), ultraviolet absorber (D6), antibacterial agent (D7 ) And filler (D8). (D) may use 2 or more types together.

  As the compatibilizing agent (D1), a modified vinyl polymer having one or more functional groups (polar groups) selected from the group consisting of a carboxyl group, an epoxy group, an amino group, a hydroxyl group, and a polyoxyalkylene group (for example, A polymer described in JP-A-3-258850, a modified vinyl polymer having a sulfonic acid group described in JP-A-6-345927, and a block polymer having a polyolefin part and an aromatic vinyl polymer part) Etc.

  Examples of the colorant (D2) include inorganic pigments (white pigments, cobalt compounds, iron compounds, sulfides, etc.), organic pigments (azo pigments, polycyclic pigments, etc.), and dyes (azo, indigoid, sulfide, alizarin). System, acridine system, thiazole system, nitro system, aniline system, etc.).

  As a mold release agent (D3), C12-18 fatty acid alkyl (C1-4) ester (butyl stearate, etc.), C2-18 fatty acid glycol (C2-8) ester (Ethylene glycol monostearate, etc.), polyhydric (trivalent or higher) alcohol esters (hardened castor oil, etc.) of fatty acids having 2 to 18 carbon atoms, liquid paraffin and the like.

  Examples of the antioxidant (D4) include phenol compounds [monocyclic phenol (2,6-di-t-butyl-p-cresol, etc.), bisphenol [2,2′-methylenebis (4-methyl-6-t-butylphenol). And the like] and polycyclic phenols [1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene, etc.]], sulfur compounds (dilauryl- 3,3′-thiodipropionate etc.), phosphorus compounds (triphenyl phosphite etc.), amine compounds (octylated diphenylamine etc.) and the like.

  Examples of the flame retardant (D5) include halogen-containing flame retardants, nitrogen-containing flame retardants, sulfur-containing flame retardants, silicon-containing flame retardants and phosphorus-containing flame retardants.

  Examples of the ultraviolet absorber (D6) include benzotriazole [2- (2′-hydroxy-5′-methylphenyl) benzotriazole and the like], benzophenone (2-hydroxy-4-methoxybenzophenone and the like), salicylate (phenyl salicylate). Etc.) and acrylates (such as 2-ethylhexyl-2-cyano-3,3′1-diphenyl acrylate).

  Examples of the antibacterial agent (D7) include benzoic acid, sorbic acid, halogenated phenol, organic iodine, nitrile (2,4,5,6-tetrachloroisophthalonitrile, etc.), thiocyano (methylene bistyanocyanate, etc.), N- Examples thereof include haloalkylthioimides, copper agents (such as 8-oxyquinoline copper), benzimidazoles, benzothiazoles, trihaloallyls, triazoles, organic nitrogen sulfur compounds (such as Suraoff 39), quaternary ammonium compounds and pyridine compounds.

  Examples of the filler (D8) include inorganic fillers (such as calcium carbonate, talc, and clay) and organic fillers (such as urea and calcium stearate).

The content of (D1) based on the weight of (X) and the thermoplastic resin (B) is preferably 0 to 20% by weight, more preferably 0.1 to 15% by weight, from the viewpoint of mechanical properties of the molded product. %, Particularly preferably 1 to 10% by weight, particularly preferably 1.5 to 8% by weight.
The total content of (D2) to (D8) based on the weight of (X) and the thermoplastic resin (B) is preferably 0 to 45% by weight, more preferably 0, from the viewpoint of the mechanical properties of the molded product. 0.001 to 40% by weight, particularly preferably 0.01 to 35% by weight, and most preferably 0.05 to 30% by weight.

The antistatic resin composition of the present invention can be obtained by melt-mixing the antistatic agent (X) of the present invention, the thermoplastic resin (B), and if necessary, (C) and (D). As a method of melt-mixing, generally, each component in the form of pellets or powders is mixed with an appropriate mixer [Henschel mixer (registered trademark), etc.] and then melt-mixed with an extruder to form pellets. Can be applied.
There is no particular limitation on the order of addition of each component during melt mixing, for example,
[1] A method in which (X) is melt-mixed and then (B), and if necessary, (C) and (D) are collectively added and melt-mixed.
[2] After (X) is melt-mixed, a part of (B) is melt-mixed in advance to prepare a high-concentration composition (masterbatch resin composition) of (X), and then the remaining (B) and A method in which (C) and (D) are melt-mixed as necessary (master batch method or master pellet method).
Etc.
The concentration of (X) in the masterbatch resin composition in the method [2] is preferably 40 to 80% by weight, more preferably 50 to 70% by weight.
Of the methods [1] and [2], the method [2] is preferable from the viewpoint that (X) is easily dispersed efficiently in (B).

[Antistatic resin molded product]
The antistatic resin molded product of the present invention is obtained by molding the antistatic resin composition of the present invention. Examples of molding methods include injection molding, compression molding, calendar molding, slush molding, rotational molding, extrusion molding, blow molding, film molding (casting method, tenter method, inflation method, etc.), etc., depending on the purpose. Molding, multilayer molding or foam molding can be used for any molding method.

The molded article of the present invention has excellent mechanical properties and permanent antistatic properties, as well as good paintability and printability, and a molded article can be obtained by coating and / or printing the molded article.
Examples of the method for coating a molded product include, but are not limited to, air spray coating, airless spray coating, electrostatic spray coating, dip coating, roller coating, and brush coating.
As the paint, paints generally used for plastic coating can be used, and specific examples include polyester melamine resin paint, epoxy melamine resin paint, acrylic melamine resin paint, and acrylic urethane resin paint.
The coating film thickness (dry film thickness) can be appropriately selected according to the purpose, but is usually 10 to 50 μm.

As a method for printing on a molded product or a surface on which a molded product has been coated, any printing method generally used for plastic printing can be used. Gravure printing, flexographic printing, screen printing, pad printing And dry offset printing and offset printing.
As the printing ink, those usually used for plastic printing can be used, and examples include gravure ink, flexo ink, screen ink, pad ink, dry offset ink, and offset ink.

  Examples of the present invention will be described below, but the present invention is not limited thereto.

<Production Example 1> [Production of acid-modified polyolefin (a1-1)]
Low-molecular-weight polypropylene (Mn: 3,400, per 1,000 carbon atoms) obtained by a thermal degradation method in a stainless steel pressure-resistant reaction vessel equipped with a stirrer, thermometer, heating / cooling device, nitrogen introduction tube and decompression device Of double bonds: 7.0, average number of double bonds per molecule: 1.8, content of polyolefin that can be modified at both ends: 90% by weight) 90 parts by weight, maleic anhydride 10 parts by weight And 30 parts by weight of xylene were added, and after uniform mixing, the mixture was melted at 200 ° C. with stirring in a nitrogen gas atmosphere (sealed) and reacted for 10 hours.
Thereafter, excess maleic anhydride and xylene were distilled off under reduced pressure (1.3 kPa or less) at 200 ° C. over 3 hours to obtain 95 parts by weight of acid-modified polyolefin (a1-1). The acid value of (a1-1) was 27.5, and Mn was 3,600.

<Production Example 2> [Production of secondary modified acid-modified polyolefin (a1-2)]
A stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube and a decompression device was charged with 88 parts by weight of (a1-1) and 12 parts by weight of 12-aminododecanoic acid, and a nitrogen gas atmosphere Then, the mixture was melted at 200 ° C. with stirring and reacted for 3 hours under reduced pressure (1.3 kPa or less) to obtain 96 parts by weight of a secondary modified acid-modified polyolefin (a1-2). The acid value of (a1-2) was 24.8, and Mn was 4,000.

<Production Example 3> [Production of modified polyolefin (a2-1) having hydroxyl groups at both ends]
In Production Example 1, instead of 90 parts by weight of low molecular weight polypropylene obtained by the thermal degradation method and 10 parts by weight of maleic anhydride, the thermal degradation method [ethylene / propylene random copolymer (ethylene content: 2% by weight) , MFR: 10, melting point: 100 ° C.) 410 ± 0.1 ° C., nitrogen aeration (80 mL / min), heat degradation in 14 minutes], low molecular weight ethylene / propylene random copolymer (Mn: (10,000, number of double bonds per 1,000 carbon atoms: 2.5, average number of double bonds per molecule: 1.8, content of polyolefin that can be modified at both ends: 90% by weight) 94 98 parts by weight of acid-modified polyolefin (a1-3) was obtained in the same manner as in Production Example 1 except that 6 parts by weight of maleic anhydride and 6 parts by weight of maleic anhydride were used. The acid value of (a1-3) was 9.9, and Mn was 10,200.
Next, 5 parts by weight of 2-aminoethanol was added to 97 parts by weight of (a1-3), melted at 180 ° C. in a nitrogen gas atmosphere, and reacted for 2 hours. Thereafter, excess 2-aminoethanol was distilled off under reduced pressure (1.3 kPa or less) at 180 ° C. over 2 hours to obtain a modified polyolefin (a2-1) having hydroxyl groups at both ends. The hydroxyl value of (a2-1) was 9.9, the amine value was 0.01, and Mn was 10,200.

<Production Example 4> [Production of modified polyolefin (a3-1) having amino groups at both ends]
To a stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube and a decompression device, 88 parts by weight of (a1-1) and 10 parts by weight of bis (2-aminoethyl) ether are added, and nitrogen is added. The mixture was melted at 200 ° C. with stirring under a gas atmosphere and reacted for 2 hours. Thereafter, excess bis (2-aminoethyl) ether was distilled off under reduced pressure (1.3 kPa or less) at 200 ° C. over 2 hours to obtain a modified polyolefin (a3-1) having amino groups at both ends. It was. The amine value of (a3-1) was 22.4, and Mn was 4,200.

<Production Example 5> [Production of acid-modified polyisobutylene (aa1-1)]
A stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube, and a decompression device is charged with polyisobutylene (Mn: 5,400, number of double bonds per 1,000 carbon atoms: 2.5 , 90 parts by weight of polyisobutylene that can be modified at one end: 97% by weight), 10 parts by weight of maleic anhydride and 30 parts by weight of xylene, and after homogeneous mixing, stirred in a nitrogen gas atmosphere (sealed) The mixture was melted at 200 ° C. and reacted for 10 hours.
Thereafter, excess maleic anhydride and xylene were distilled off under reduced pressure (1.3 kPa or less) at 200 ° C. over 3 hours to obtain 92 parts by weight of acid-modified polyisobutylene (aa1-1). The acid value of (aa1-1) was 9.8, and Mn was 5,500.

<Production Example 6> [Production of secondary modified acid-modified polyisobutylene (aa1-2)]
A stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube and a decompression device was charged with 88 parts by weight of (aa1-1) and 4 parts by weight of 12-aminododecanoic acid, and a nitrogen gas atmosphere Then, the mixture was melted at 200 ° C. with stirring and reacted under reduced pressure (1.3 kPa or less) for 3 hours to obtain 93 parts by weight of secondary-modified acid-modified polyisobutylene (aa1-2). The acid value of (aa1-2) was 8.9, and Mn was 5,700.

<Production Example 7> [Production of modified polyisobutylene (aa2-1) having a hydroxyl group at one end]
A stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube and a decompression device was charged with 88 parts by weight of (aa1-1) and 4 parts by weight of 2-aminoethanol, and under a nitrogen gas atmosphere. The mixture was melted at 180 ° C. with stirring and reacted for 2 hours. Thereafter, excess 2-aminoethanol was distilled off under reduced pressure (1.3 kPa or less) at 180 ° C. over 2 hours to obtain a modified polyisobutylene (aa2-1) having a hydroxyl group at one end. (Aa2-1) had a hydroxyl value of 9.3, an amine value of 0.01, and Mn of 5,600.

<Production Example 8> [Production of modified polyisobutylene (aa3-1) having amino groups at both ends]
Into a stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube and a decompression device, 88 parts by weight of (aa1-1) and 4 parts by weight of bis (2-aminoethyl) ether are added, Under a nitrogen gas atmosphere, the mixture was melted at 200 ° C. with stirring and reacted for 2 hours. Thereafter, excess bis (2-aminoethyl) ether was distilled off under reduced pressure (1.3 kPa or less) at 200 ° C. for 2 hours to obtain a modified polyisobutylene (aa3-1) having amino groups at both ends. It was. The amine value of (aa3-1) was 9.2, and Mn was 5,600.

<Production Example 9> [Production of Cationic Polymer (b3-1)]
41 parts by weight of N-methyldiethanolamine, 49 parts by weight of adipic acid, and 0.3 parts by weight of zirconyl acetate are put into a stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube and a decompression device After substitution with nitrogen, the temperature was raised to 220 ° C. over 2 hours, and the pressure was reduced to 0.13 kPa over 1 hour to cause a polyesterification reaction. After completion of the reaction, the mixture was cooled to 50 ° C. and dissolved by adding 100 parts by weight of methanol. While stirring, the temperature in the reaction vessel was kept at 120 ° C., 31 parts by weight of dimethyl carbonate was gradually added dropwise over 3 hours, and aged at the same temperature for 6 hours. After cooling to room temperature, 100 parts by weight of 60% by weight hexafluorophosphoric acid aqueous solution was added, and the mixture was stirred at room temperature for 1 hour. Subsequently, methanol was distilled off under reduced pressure, and a cationic polymer (b3-1) having an average of 12 quaternary ammonium groups (hydroxyl value: 30.1, acid value: 0.5, volume resistivity: 1 × 10 ⁵ Ω) Cm) was obtained.

<Production Example 10> [Production of anionic polymer (b4-1)]
In a stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube and a decompression device, 67 parts by weight of PEG (Mn: 300), 49 parts by weight of sodium salt of 5-sulfoisophthalic acid dimethyl ester, Add 0.2 parts by weight of dibutyltin oxide, raise the temperature to 190 ° C. under a reduced pressure of 0.67 kPa, conduct transesterification for 6 hours while distilling off methanol, and average 5 sodium sulfonate bases in one molecule. An anionic polymer (b4-1) having a hydroxyl value of 29.6, an acid value of 0.4, and a volume resistivity value of 2 × 10 ⁶ Ω · cm was obtained.

<Example 1> [Production of antistatic agent (X-1)]
In a stainless steel pressure-resistant reaction vessel equipped with a stirrer, a thermometer, a heating / cooling device, a nitrogen introduction tube and a decompression device, 74.1 parts by weight of acid-modified polyolefin (a1-1), acid-modified polyisobutylene (aa1-1) 30 0.1 part by weight, α, ω-diaminoPEG (Mn: 2,000, volume resistivity: 1 × 10 ⁷ Ω · cm) (b1-1) 42.2 parts by weight, antioxidant [trade name “IRGA Nox 1010 ", manufactured by BASF Japan Ltd.] and 0.4 parts by weight of zirconyl acetate and 0.6 parts by weight of zirconyl acetate were added and polymerized at 220 ° C. under a reduced pressure of 0.13 kPa or less for 3 hours to obtain a viscous polymer. . A block polymer (A-1) comprising a block (a1-1), a block (aa1-1) and a block (b1-1) by taking out this polymer in a strand form on a belt and pelletizing it. An antistatic agent (X-1) containing Mn: 20,000) was obtained.

<Example 2> [Production of antistatic agent (X-2)]
In Example 1, instead of (a1-1) 74.1 parts by weight, (aa1-1) 30.1 parts by weight, (b1-1) 42.2 parts by weight, (a1-1) 78.1 parts by weight Parts, (aa1-1) 7.8 parts by weight, and (b1-1) 39.6 parts by weight, in the same manner as in Example 1, except that (a1-1) blocks and (aa1-1) The antistatic agent (X-2) containing the block polymer (A-2) (Mn: 35,000) which consists of a block of (b1-1), and the block of (b1-1) was obtained.

<Example 3> [Production of antistatic agent (X-3)]
In Example 1, instead of 74.1 parts by weight of (a1-1), 30.1 parts by weight of (aa1-1), and 42.2 parts by weight of (b1-1), a secondary modified acid-modified polyolefin (a1 -2) 58.6 parts by weight, secondary modified acid-modified polyisobutylene (aa1-2) 28.3 parts by weight, PEG (Mn: 3,000, volume resistivity: 1 × 10 ⁷ Ω · cm) ( b1-2) A block polymer comprising the block of (a1-2), the block of (aa1-2), and the block of (b1-2), except that 45.6 parts by weight were used. (A-3) An antistatic agent (X-3) containing (Mn: 27,000) was obtained.

<Example 4> [Production of antistatic agent (X-4)]
In Example 1, instead of 74.1 parts by weight of (a1-1), 30.1 parts by weight of (aa1-1), and 42.2 parts by weight of (b1-1), a secondary modified acid-modified polyolefin (a1 -2) 62.6 parts by weight, 6.2 parts by weight of secondary-modified acid-modified polyisobutylene (aa1-2), PEG (Mn: 3,000, volume resistivity: 1 × 10 ⁷ Ω · cm) ( b1-2) A block polymer comprising the block of (a1-2), the block of (aa1-2), and the block of (b1-2), except that 43.1 parts by weight were used. (A-4) An antistatic agent (X-4) containing (Mn: 42,000) was obtained.

<Example 5> [Production of antistatic agent (X-5)]
In Example 1, instead of 74.1 parts by weight of (a1-1), 30.1 parts by weight of (aa1-1), and 42.2 parts by weight of (b1-1), a modified polyolefin having hydroxyl groups at both ends ( a2-1) 60.1 parts by weight, modified polyisobutylene (aa2-1) having secondary modified acid-modified polyisobutylene hydroxyl group at one end, 30.2 parts by weight, cationic polymer (b3-1) 29.1 parts by weight Block, comprising the block of (a2-1), the block of (aa2-1), the block of (b3-1), except that 3.6 parts by weight of dodecanedioic acid was used. An antistatic agent (X-5) containing polymer (A-5) (Mn: 21,000) was obtained.

<Example 6> [Production of antistatic agent (X-6)]
In Example 1, instead of 74.1 parts by weight of (a1-1), 30.1 parts by weight of (aa1-1), and 42.2 parts by weight of (b1-1), a modified polyolefin having hydroxyl groups at both ends ( a2-1) 60.1 parts by weight, modified polyisobutylene (aa2-1) having secondary modified acid-modified polyisobutylene hydroxyl group at one end, 30.2 parts by weight, cationic polymer (b3-1) 29.1 parts by weight Block polymer comprising the block of (a2-1), the block of (aa2-1), and the block of (b3-1) in the same manner as in Example 1 except that 2.6 parts by weight of hexamethylene diisocyanate was used. (A-6) An antistatic agent (X-6) containing (Mn 26,000) was obtained.

<Example 7> [Production of antistatic agent (X-7)]
In Example 1, instead of (a1-1) 74.1 parts by weight, (aa1-1) 30.1 parts by weight, (b1-1) 42.2 parts by weight, a modified polyolefin having amino groups at both ends (A3-1) 67.1 parts by weight, modified polyisobutylene having amino groups at both ends (aa3-1) 40.2 parts by weight, anionic polymer (b4-1) 63.3 parts by weight, dodecanedioic acid 7 A block polymer (A-7) comprising the block of (a3-1), the block of (aa3-1) and the block of (b4-1) except that 7 parts by weight were used An antistatic agent (X-7) containing (Mn: 32,000) was obtained.

<Example 8> [Production of antistatic agent (X-8)]
In Example 1, instead of 74.1 parts by weight of (a1-1), 30.1 parts by weight of (aa1-1), and 42.2 parts by weight of (b1-1), a secondary modified acid-modified polyolefin (a1 -2) 71.5 parts by weight, secondary modified acid-modified polyisobutylene (aa1-2) 27.6 parts by weight, polytetramethylene glycol (Mn: 1,800, volume resistivity 1 × 10 ¹¹ Ω · cm ) (B1-3) A block comprising the block (a1-2), the block (aa1-2), and the block (b1-3) in the same manner as in Example 1 except that 32.6 parts by weight were used. An antistatic agent (X-8) containing polymer (A-8) (Mn: 28,000) was obtained.

<Example 9> [Production of antistatic agent (X-9)]
In Example 3, instead of (a1-2) 58.6 parts by weight, (aa1-2) 28.3 parts by weight, and (b1-2) 45.6 parts by weight, a secondary modified acid-modified polyolefin (a1 -2) 82.6 parts by weight, secondary modified acid-modified polyisobutylene (aa1-2) 4.4 parts by weight, PEG (Mn: 3,000, volume resistivity: 1 × 10 ⁷ Ω · cm) ( b1-2) A block polymer comprising the block of (a1-2), the block of (aa1-2), and the block of (b1-2), except that 61.7 parts by weight were used. An antistatic agent (X-9) containing (A-9) (Mn: 38,000) was obtained.

<Example 10> [Production of antistatic agent (X-10)]
In Example 3, instead of (a1-2) 58.6 parts by weight, (aa1-2) 28.3 parts by weight, and (b1-2) 45.6 parts by weight, a secondary modified acid-modified polyolefin (a1 -2) 21.8 parts by weight, secondary modified acid-modified polyisobutylene (aa1-2) 63.5 parts by weight, PEG (Mn: 3,000, volume resistivity: 1 × 10 ⁷ Ω · cm) ( b1-2) A block polymer comprising the block of (a1-2), the block of (aa1-2), and the block of (b1-2), except that 31.2 parts by weight were used. An antistatic agent (X-10) containing (A-10) (Mn: 21,000) was obtained.

<Example 11> [Production of antistatic agent (X-11)]
In Example 3, instead of (a1-2) 58.6 parts by weight, (aa1-2) 28.3 parts by weight, and (b1-2) 45.6 parts by weight, a secondary modified acid-modified polyolefin (a1 -2) 30.1 parts by weight, secondary modified acid-modified polyisobutylene (aa1-2) 59.9 parts by weight, PEG (Mn: 1,000, volume resistivity: 1 × 10 ⁷ Ω · cm) ( b1-4) A block polymer comprising the block (a1-2), the block (aa1-2), and the block (b1-4) in the same manner as in Example 3 except that 10.0 parts by weight were used. An antistatic agent (X-11) containing (A-11) (Mn: 23,000) was obtained.

<Example 12> [Production of antistatic agent (X-12)]
In Example 3, instead of (a1-2) 58.6 parts by weight, (aa1-2) 28.3 parts by weight, and (b1-2) 45.6 parts by weight, a secondary modified acid-modified polyolefin (a1 -2) 15.6 parts by weight, secondary modified acid-modified polyisobutylene (aa1-2) 3.9 parts by weight, dodecanedioic acid 0.5 parts by weight, PEG (Mn: 14,000, volume resistivity: 1 × 10 ⁷ Ω · cm) (b1-5) A block (a1-2), a block (aa1-2), and (b1), except that 80.0 parts by weight were used. The antistatic agent (X-12) which contains the block polymer (A-12) (Mn: 21,000) which consists of a block of -4) was obtained.

<Comparative example 1> [Production of antistatic agent (X′-1)]
In Example 1, instead of 74.1 parts by weight of (a1-1), 30.1 parts by weight of (aa1-1), and 42.2 parts by weight of (b1-1), a secondary modified acid-modified polyolefin (a1 -2) Same as Example 1 except that 92.5 parts by weight, PEG (Mn: 3,000, volume resistivity 1 × 10 ⁷ Ω · cm) (b1-2) 65.4 parts by weight were used. An antistatic agent (X′-1) containing a block polymer (A′-1) (Mn: 42,000) composed of a block (a1-2) and a block (b1-2) Obtained.

<Comparative example 2> [Production of antistatic agent (X′-2)]
In Example 1, instead of 74.1 parts by weight of (a1-1), 30.1 parts by weight of (aa1-1), and 42.2 parts by weight of (b1-1), secondary modified acid-modified polyisobutylene ( aa1-2) 112.3 parts by weight, PEG (Mn: 3,000, volume resistivity: 1 × 10 ⁷ Ω · cm) (b1-2) Except for using 25.8 parts by weight, Example 1 In the same manner as described above, an antistatic agent (X′-2) containing a block polymer (A′-2) (Mn: 8,000) comprising a block (aa1-2) and a block (b1-2) )

<Examples 13 to 28, Comparative Examples 3 to 6>
According to the composition (parts by weight) shown in Table 1, the blended components were blended for 3 minutes with a Henschel mixer (registered trademark), and then in a twin-screw extruder with a vent at a cylinder temperature of 220 ° C. and a residence time of 5 minutes. It melt-kneaded and produced the antistatic resin composition of Examples 13-28 and Comparative Examples 3-6. From the obtained antistatic resin composition, an injection molding machine “PS40E5ASE” [manufactured by Nissei Plastic Industry Co., Ltd.] is used to produce a molding test piece under the conditions of a cylinder temperature of 230 ° C. and a mold temperature of 50 ° C., The following performance test evaluated. The results are shown in Table 1.

<Performance test>
(1) Surface resistivity (unit: Ω)
In accordance with ASTM D257, the surface resistivity of a test piece (100 × 100 × 2 mm) was measured at 23 ° C. and humidity 50% RH using a superinsulator “DSM-8103” [manufactured by Hioki Electric Co., Ltd.] The value was measured.
(2) Izod impact strength (Unit: J / m)
Measured according to ASTM D256 Method A (notched, 3.2 mm thickness).

The contents of the symbols in Table 1 are as follows.
(B-1): PP resin “PM771M” [manufactured by Sun Allomer Co., Ltd.]
(B-2): Impact-resistant PS resin “HIPS 433” [manufactured by PS Japan Co., Ltd.]
(C-1): 1-ethyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imide (C-2): sodium dodecylbenzenesulfonate (C-3): lithium trifluoromethanesulfonate

<Examples 29 to 45, Comparative Examples 7 to 10>
After blending the blending components with Henschel mixer (registered trademark) for 3 minutes according to the blending composition (parts by weight) shown in Table 2, an extrusion molding machine equipped with a T-die [model number “2D25S”, Toyo Seiki Seisakusho Co., Ltd. Manufactured, cylinder temperature 220 ° C.] and melt-extruded using a cooling roll at 20 ° C. to obtain an extruded film (single layer film) having a thickness of 100 μm. The surface resistivity value of the obtained extruded film was measured by the above method [test piece (100 × 100 mm)], and the moldability and heat sealability were evaluated by the following performance test. The results are shown in Table 2.

(1) Formability The moldability of the extruded film in the production of the above extruded film was evaluated according to the following evaluation criteria.
<Evaluation criteria>
○: Smooth extrusion and uniform thickness of molded product ×: Smooth extrusion, but non-uniform thickness of molded product (2) Heat sealability (unit: kg / 15mm)
Two extrudate films obtained by the above method are stacked, and using a thermal tilt tester [manufactured by Toyo Seiki Co., Ltd.], thermocompression bonding [temperature: (B-3), when using (B-4)] Are 160 ° C., 180 ° C., pressure: 3 kg / cm ² , time: 1 second], then the test piece is allowed to stand for 24 hours under conditions of 23 ° C. and humidity 50% RH, and a tensile test according to JIS-K7127. The fracture strength of the heat-sealed part was measured by the same method as above.

The contents of the symbols in Table 2 are as follows.
(B-3): PP resin “PL500A” [manufactured by Sun Allomer Co., Ltd.]
(B-4): Impact-resistant PS resin “HIPS H0103” [manufactured by PS Japan Ltd.]

  As is clear from Tables 1 and 2, the antistatic resin composition containing the antistatic agent (X) of the present invention gives a molded product having excellent permanent antistatic properties, and the appearance and machine of the molded product. Excellent strength.

  Since the antistatic agent of the present invention can impart excellent permanent antistatic properties to molded products, various molding methods [injection molding, compression molding, calendar molding, slush molding, rotational molding, extrusion molding, blow molding, foam molding and Housing products (for home appliances / OA equipment, game machines, office equipment, etc.) molded by film molding (casting method, tenter method, inflation method, etc.), plastic container materials (trays used in clean rooms (IC trays, etc.) And other containers, etc.], various cushioning materials, covering materials (such as packaging films and protective films), flooring sheets, artificial turf, mats, tape base materials (for semiconductor manufacturing processes, etc.) and various molded products (automobile parts) Etc.) It is suitable as a material for use.

Claims (8)

A block of polyolefin (a), a block of polyisobutylene (aa), and a block of hydrophilic polymer (b) having a volume resistivity of 1 × 10 ⁵ to 1 × 10 ¹¹ Ω · cm are ester bonds, amides An antistatic agent (X) comprising a block polymer (A) bonded through at least one bond selected from the group consisting of a bond, an ether bond, an imide bond and a urethane bond, wherein (a) is An antistatic agent, which is a polyolefin excluding polyisobutylene, and (A) is a polymer having a structure in which (a), (aa), and (b) are bonded in the form represented by the following general formula (1).
^{Z 1 - [b] - {} [a] - [b]} n -Z 2 (1)
[[A] is a block of polyolefin (a); [b] is a block of hydrophilic polymer (b); Z ¹ and Z ² are each independently [a] or a block [aa] of polyisobutylene (aa). Thus, neither Z ¹ nor Z ² can be [a]; n is a number from 1 to 30. ]   The antistatic agent according to claim 1, wherein the weight ratio of the block of polyolefin (a) to the block of polyisobutylene (aa) in the block polymer (A) is 95/5 to 25/75.   The antistatic agent according to claim 1 or 2, wherein the proportion of the block (b) in the block polymer is 10 to 80% by weight based on the weight of (A).   The antistatic resin composition which makes the thermoplastic resin (B) contain the antistatic agent in any one of Claims 1-3.   The antistatic resin composition according to claim 4, wherein the weight ratio of (X) to (B) is from 1/99 to 40/60.   The antistatic resin composition according to claim 4 or 5, further comprising an antistatic property improver (C) and / or an additive (D).   A molded product formed by molding the antistatic resin composition according to any one of claims 4 to 6. A molded article obtained by coating and / or printing the molded article according to claim 7.