JP2007211066A - Permanently antistatic resin composition, transparent sheet and transparent permanently antistatic sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin composition exhibiting excellent transparency, and a transparent sheet and a permanently antistatic sheet obtained by molding the resin composition. <P>SOLUTION: The permanently antistatic resin composition is mainly composed of 1-99 wt.% of (A) a polyepichlorohydrin polymer and 99-1 wt.% of (B) a cellulose derivative [provided that (A)+(B)=100 wt.%], wherein the polyepichlorohydrin polymer (A) is an epichlorohydrin-ethylene oxide copolymer and/or an epichlorohydrin-ethylene oxide-allyl glycidyl ether terpolymer. The transparent sheet and the transparent permanently antistatic sheet are obtained by extrusion-molding the composition. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a resin composition excellent in transparency and antistatic property, and further to a transparent sheet and a permanent antistatic sheet obtained by molding the resin composition.

In recent years, it is desired to change to a plastic material derived from biomass because it has little impact on the environment and oil resources will be depleted in the future. In particular, polylactic acid and polyhydroxybutyric acid have attracted much attention as biomass-derived plastics. However, both materials are opaque and are difficult to use as transparent plastics. In addition, since the cellulose skeleton, which is the main component, is derived from biomass, the cellulose derivative has the properties of having a small environmental load and excellent transparency. However, there was a drawback of poor toughness.
As a method for solving these problems, a method of mixing a polyhydroxybutyric acid resin with a cellulose derivative has been proposed (see Non-Patent Documents 1 and 2).
However, in the method of mixing a polyhydroxybutyric acid resin with the cellulose derivative proposed in Non-Patent Documents 1 and 2, it was difficult to stably perform production processing due to the thermal decomposability of polyhydroxybutyric acid. .
Macromolecules, vol. 27, p. 4755 (1994). Journal of Applied Polymer Science, vol. 89, p. 2116 (2003).

  The present invention provides a permanent antistatic resin composition of a cellulose derivative excellent in transparency and excellent in toughness, and also provides a transparent sheet and a transparent permanent antistatic sheet comprising the resin composition. It is.

The present invention is mainly composed of (A) 1 to 99% by weight of a polyepichlorohydrin polymer and (B) 99 to 1% by weight of a cellulose derivative [provided that (A) + (B) = 100% by weight]. The (A) polyepichlorohydrin polymer is an epichlorohydrin / ethylene oxide copolymer and / or an epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer. The present invention relates to a permanent antistatic resin composition.
The epichlorohydrin / ethylene oxide copolymer and / or the epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer preferably has a chlorine content of 20 wt% or more and 38 wt% or less.
Here, the (B) cellulose derivative is cellulose acetate butyrate and / or cellulose acetate propionate, and the total of acetyl content, propionyl content and butyryl content is 40% by weight or more based on (B) cellulose derivative. Preferably there is.
Further, in the permanent antistatic resin composition of the present invention, 1 to 30 parts by weight of a plasticizer is mixed with 100 parts by weight of the total amount of (A) polyepichlorohydrin polymer and (B) cellulose derivative. It is preferable that
Furthermore, the permanent antistatic resin composition of the present invention preferably has a total light transmittance of 80% or more of a sheet having a thickness of 1 mm.
Furthermore, the permanent antistatic resin composition of the present invention preferably has two or more glass transition temperatures observed by dynamic viscoelasticity measurement.
Next, the present invention relates to a transparent sheet and a transparent permanent antistatic sheet obtained by extruding the permanent antistatic resin composition described above.

  The permanent antistatic resin composition of the present invention is obtained by adding a polyepichlorohydrin polymer to a cellulose derivative, and is excellent in transparency and toughness. Moreover, when the resin composition of the present invention is used, a transparent sheet and a transparent permanent antistatic sheet having high transparency and excellent toughness can be obtained.

Examples of the (A) polyepichlorohydrin-based polymer used in the present invention include epichlorohydrin / ethylene oxide copolymer, epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer, and these 1 type or 2 types are used in mixture. The (A) polyepichlorohydrin polymer of the present invention does not include a homopolymer of epichlorohydrin. In order to obtain a sheet having particularly excellent antistatic performance, the (A) polyepichlorohydrin-based polymer has a chlorine content of 20 wt% or more and 38 wt% or less, particularly preferably 20 wt% or more and 26 wt%. % Or less of epichlorohydrin / ethylene oxide copolymer and / or epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer. The chlorine content is based on chlorine atoms in epichlorohydrin.
Among the commercially available (A) polyepichlorohydrin-based polymers, epichlorohydrin / ethylene oxide copolymers include the epithelial product name Epichromer D manufactured by Daiso and Hyrin C2000 manufactured by Nippon Zeon. As the terpolymer of chlorohydrin / ethylene oxide / allyl glycidyl ether, Epichromer CG-102 manufactured by Daiso Corporation and Hydrin T3150 manufactured by Nippon Zeon Co., Ltd. are preferable.

  The cellulose derivative (B) used in the present invention is not particularly limited as long as it is a cellulose derivative, but it is preferable to use cellulose acetate butyrate and / or cellulose acetate propionate because it is excellent in transparency. In order to obtain an excellent transparent material, the total of the acetyl content, propionyl content and butyryl content is preferably 40% by weight or more based on (B) the cellulose derivative. More preferably, it is 40 to 60% by weight. The method for measuring the acetyl content and the like is described in detail in ASTM D817. The average substitution degree of acetate, propionate, and butyrate in cellulose acetate butyrate and / or cellulose acetate propionate is preferably 2.0 or more in total in order to obtain an excellent transparent material.

(B) When cellulose acetate butyrate and cellulose acetate propionate are used in combination as the cellulose derivative, the ratio of the two is 0.01: 99.99 to 99.99: 0.01 in weight ratio.
As the cellulose derivative (B) used in the present invention, cellulose acetate propionate includes trade name CAP-482-20 manufactured by Eastman, and cellulose acetate butyrate is trade name manufactured by Eastman. And CAB-381-20.

  In the permanent antistatic resin composition of the present invention, (A) polyepichlorohydrin polymer and (B) cellulose derivative are (A) :( B) = 1: 99 to 99: 1 in weight ratio, preferably 10:90 to 90:10 [where (A) + (B) = 100 wt%]. (A) When the polyepichlorohydrin polymer is less than 1% by weight, the heat resistance, transparency and conductivity are impaired, while when it exceeds 99% by weight, the toughness is impaired.

  When the permanent antistatic resin composition of the present invention is formed into a sheet having a thickness of 1 mm, the total light transmittance measured in accordance with JIS K6714 is 80% or more, preferably 85 to 100%. Application to various optical materials becomes possible. If the total light transmittance is less than 80%, the light is attenuated and it is not suitable for use as a transparent resin.

The permanent antistatic resin composition of the present invention has a surface specific resistance value of 10 ¹² Ω / □ or less, more preferably 10 ⁹ to 10 ¹² Ω / □ measured using a sheet having a thickness of 1 mm in accordance with JIS K6911. It is preferable that the antistatic effect as a countermeasure against static electricity is obtained. If the surface specific resistance value exceeds 10 ¹² Ω / □, the antistatic effect is inferior and the sheet is charged. This surface specific resistance value can be adjusted by the weight ratio of (A) polyepichlorohydrin polymer and (B) cellulose derivative.

  Furthermore, the permanent antistatic resin composition of the present invention preferably has two or more glass transition temperatures observed by dynamic viscoelasticity measurement, and exhibits excellent heat resistance and toughness due to this property. The measurement of dynamic viscoelasticity can be evaluated with a commercially available dynamic viscoelasticity measuring apparatus. For example, the maximum loss tangent (tan δ) observed when measured at a frequency of 10 Hz under a temperature rising rate of 2 ° C./min. Is defined as the glass transition temperature.

  In the permanent antistatic resin composition of the present invention, 1 to 30 parts by weight of a plasticizer, preferably 100 parts by weight of the total amount of (A) polyepichlorohydrin polymer and (B) cellulose derivative, 3 to 20 parts by weight can be added. The molding process is facilitated by adding a plasticizer.

  Examples of the plasticizer that can be used in the present invention include dimethyl phthalate, diethyl phthalate, di-n-butyl phthalate, di-n-hexyl phthalate, diheptyl phthalate, and di-2-ethylhexyl phthalate. Phthalic acid plasticizers such as di-n-octyl phthalate, diisodecyl phthalate, diisononyl phthalate, dibutylbenzyl phthalate, di-2-ethylhexyl isophthalate, dialkylene glycol phthalates; Ethylhexyl, diisodecyl adipate, dibutyl adipate, dibutyl diglycol adipate, dialkylene glycol adipate, di-2-ethylhexyl azelate, dibutyl sebacate, di-2-ethylhexyl sebacate, triethyl citrate, acetyl citrate Fats such as tributyl Trimellitic plasticizers such as trioctyl trimellitic acid and tridecyl trimellitic acid; pyromellitic plasticizers; tributyl phosphate, tri-2-ethylhexyl phosphate, tricresyl phosphate, triphosphate phosphate Phosphate ester plasticizers such as butoxyethyl; Epoxy plasticizers such as epoxidized soybean oil; Polymer plasticizers such as chlorinated paraffin, polyester polymer plasticizers, and polyether polymer plasticizers 1 type or 2 types or more can be used. As commercial products, Sansizer DOA manufactured by Shin Nippon Rika Co., Ltd., Trimex T-10 manufactured by Kao Corporation, and the like are used.

The method for producing the permanent antistatic resin composition of the present invention is not particularly limited, and (A) a polyepichlorohydrin-based polymer and (B) an internal mixer such as a Banbury mixer or a pressure kneader, It can be obtained by mixing using a roll kneader, a single screw or twin screw extruder or the like.
In producing the permanent antistatic resin composition of the present invention, it is desirable to dry (A) the polyepichlorohydrin polymer and / or (B) the cellulose derivative in advance, and the drying conditions are arbitrary. For example, it is preferable to dry at a temperature of 30 to 90 ° C. for about 30 minutes to 3 days. Also, when molding the resin composition of the present invention, it is desirable to dry the resin composition in advance, and the drying conditions are arbitrary, for example, at a temperature of 30 to 90 ° C. for 30 minutes to It is preferable to dry for about 3 days.

In the permanent antistatic resin composition of the present invention, an antiblocking agent, a release agent, a slip agent, an antifogging agent, a lubricant, a heat stabilizer, an ultraviolet stabilizer, a light stabilizer, a weather resistance stabilizer are optionally added. Further, it may contain an antifungal agent, an anticorrosive agent, an ion trap agent, a flame retardant, a flame retardant aid, an antistatic agent and an antioxidant. In particular, in order to further improve the antistatic performance, cationic, anionic and nonionic antistatic agents can be added as necessary, but the cellulose derivatives used in the present invention have a cationic antistatic agent. Is preferred.
Antistatic agents used in the present invention include lauryl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, lauryl dimethyl benzyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, dioleyl dimethyl ammonium chloride, stearyl dimethyl ammonium chloride, poly Oxyethylene lauryl dimethyl ammonium perchlorate, polyoxyethylene stearyl dimethyl ammonium perchlorate, stearyl dimethyl 2-hydroxyethylammonium nitrate, oleylaminopropyldimethyl 2-hydroxyethylammonium perchlorate, stearyl oleylaminopropyldimethyl 2 -Hydroxyethylammoni Quaternary ammonium salts such as perchlorate, oleylethyldimethylammonium ethyl sulfate; sodium alkyl sulfonate, sodium sodium alkyl sulfate, alkyl ether sulfate sodium salt, alkyl ether sulfate triethanolamine salt, polyoxyethylene alkyl ether Anionic activators such as sulfate triethanolamine salt, polyoxyethylene alkyl ether sulfate sodium salt, sodium dialkylsulfosuccinate, sodium alkylbenzene sulfonate, sodium acylmethyl taurate, sodium alkyl ether sulfonate; glycerin fatty acid ester, polyglycerin fatty acid ester , Sorbitan fatty acid ester, polyoxyethylene glycerin fat Ester, polyoxyethylene sorbitan fatty acid ester, polyethylene glycol fatty acid ester, polypropylene glycol fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene alkylphenyl ether, polyethylene glycol, polyethylene glycol / polypropylene glycol block polymer, fatty acid diethanolamide, polyethylene Nonionic activators such as glycol alkylamine and polyethylene glycol alkenylamine; amphoteric activators such as dimethylalkylamine and alkyldiaminoethylglycine sodium, and the like, preferably a cationic activator represented by the following formula (1). These can be used alone or in combination of two or more.

[However, in the formula (1), R1 is an alkyl or alkenyl group, R2 is _CH 3, _CH 2 CH ₃ or _{(C 2 H 4 O) n} H (n,, having 6 to 22 carbon atoms to 10 X represents Cl, ClO ₄ , NO ₃ , CH ₃ SO ₄ , or CH ₃ CH ₂ SO _4. ]

  When the antistatic agent is added, the addition amount is 20 parts by weight or less, preferably 15 parts by weight or less with respect to 100 parts by weight of the total amount of the components (A) to (B). When the amount exceeds 20 parts by weight, the surface bleeds and becomes sticky, the sheets are blocked, or the transparency of the sheet is deteriorated.

  Further, stabilizers that can be added to the permanent antistatic resin composition of the present invention include 2,6-di-t-butyl-p-cresol, 2,4,6-tri-tert-butylphenol, n-octadecyl. -3- (4'-hydroxy-3 ', 5'-di-tert-butylphenol) propionate, styrenated phenol, 4-hydroxy-methyl-2,6-di-tert-butylphenol, 2,5-di-tert. 3-butyl-hydroquinone, cyclohexylphenol, butylhydroxyanisole, 2,2'-methylene-bis (4-methyl-6-tert-butylphenol), 2,2'-methylene-bis (4-ethyl-6-tertiary) Butylphenol), 4,4′-isopropylidenebisphenol, 4,4′-butylidene-bis (3-methyl-6-tert-butylphenol), 1,1 Bis- (4-hydroxyphenyl) cyclohexane, 4,4′-methylene-bis (2,6-di-tert-butylphenol), 2,6-bis (2′-hydroxy-3′-tert-butyl-5) '-Methylbenzyl) 4-methylphenol, 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, 1,3,5-tris-methyl-2,4,6 -Tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, tetrakis [methylene-3 (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] methane, tris (3,5 -Di-tert-butyl-4-hydroxyphenyl) isocyanurate, tris [β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionyloxyethyl] isocyanate, , 4'-thiobis (3-methyl-6-t-butylphenol), 2,2'-thiobis (4-methyl-6-t-butylphenol), 4,4'-thiobis (2-methyl-6-t-) Phenolic antioxidants such as butylphenol); triphenyl phosphite, tris (nonylphenyl) phosphite, triethyl phosphite, tris (2-ethylhexyl) phosphite, tridecyl phosphite, tris (tridecyl) phosphite, diphenyl mono (2-ethylhexyl) phosphite, diphenyl monodecyl phosphite, diphenyl mono (tridecyl) phosphite, dilauryl hydrogen phosphite, diphenyl hydrogen phosphite, tetraphenyl dipropylene glycol diphosphite, tetraphenyl dipro Lenglycol diphosphite, tetraphenyltetra (tridecyl) pentaerythritol tetraphosphite, tetra (tridecyl) -4,4'-isopropylidenediphenyldiphosphite, trilauryltrithiophosphite, bis (tridecyl) pentaerythritol diphosphite Phosphite antioxidants such as bis (nonylphenyl) pentaerythritol diphosphite, tristearyl phosphite, distearyl pentaerythritol diphosphite, tris (2,4-di-t-butylphenyl) phosphite Among them, phosphite antioxidants are preferable, and tetra (tridecyl) 4,4′-isopropylidenediphenyl diphosphite is more preferable.

The added amount of the stabilizer is preferably 0.1 to 5.0 parts by weight with respect to 100 parts by weight of the total amount of the components (A) to (B). If the amount is less than 0.1 parts by weight, discoloration or the like is caused and the stabilizing effect is poor. On the other hand, if the amount exceeds 5.0 parts by weight, the physical properties of the film are deteriorated and the printability is poor. More preferably, it is 0.1-2.0 weight part.
In addition, a dye or pigment may be used in combination with the permanent antistatic resin composition for color tone adjustment.

Furthermore, other thermoplastic resins and rubbers, particularly thermoplastic resins called biodegradable resins, may be blended to such an extent that the performance is not impaired.
As the other thermoplastic resin or rubber, polybutylene succinate, polybutylene succinate adipate or the like can be blended.

The molding method of the permanent antistatic resin composition of the present invention is arbitrary, and examples thereof include compression molding, transfer molding, profile extrusion, film, sheet, blow, injection, foaming, extrusion coating, rotational molding, and the like. Excellent formability. When performing sheet forming, it is preferable to set the temperature of the molten resin to 180 ° C. or more because the extrusion load is reduced.
In addition, a multilayer sheet using the permanent antistatic resin composition of the present invention for the surface layer and a predetermined thermoplastic resin for the core layer may be molded by a multilayer coextrusion method using a feed block or a multi-die. However, the manufacturing method is not limited to these.

  The layer structure of the transparent sheet and the transparent permanent antistatic sheet of the present invention is not particularly limited, but may be a single layer sheet of the permanent antistatic resin composition of the present invention, or the permanent antistatic resin composition of the present invention. The surface layer (a) is laminated on one surface layer of the core layer (b) (a) / (b), or the surface layer (a) is laminated on both surfaces of the core layer (b) (a) / (b ) / (A). Further, if necessary, core layers (b) and (b2) having different resin compositions are used, and (a) / (b) / (b2) / (a) and (a) / (b) / (b2) / You may laminate | stack four or more layers like (b) / (a). Furthermore, using (A) / (b) / (a2), the surface layers (a) and (a2) having different weight ratios from (A) the type of polyepichlorohydrin polymer and (B) the cellulose derivative are used. ) Etc. can also be taken.

  Although the thickness of the transparent sheet and transparent permanent antistatic sheet of the present invention is not particularly limited, it is used for optical materials such as lighting covers and panel constituent materials of various display devices, partitioning of clean rooms, device transport trays for countermeasures against static electricity, Is preferably 20 mm or less, more preferably 0.05 to 10 mm.

Hereinafter, the present invention will be described with reference to examples, but these are illustrative and the present invention is not limited to these examples.
Various measurements in Examples and Comparative Examples are shown below.
~ Measurement of transparency ~
Based on JIS K6714, the total light transmittance of a sheet having a thickness of 1 mm was measured with a haze meter (manufactured by Toyo Seiki Seisakusho, direct reading type haze meter).
~ Toughness evaluation ~
A sheet having a thickness of 1 mm was cut into a 5 cm square, and a 100 g iron ball was dropped from above to observe the state of the sheet.
~ Evaluation of glass transition temperature ~
A sheet with a thickness of 1 mm is cut into a strip and measured from -100 ° C. to 150 ° C. with a forced vibration type dynamic viscoelasticity measuring device (UBM, E4000) at a frequency of 10 Hz and a heating rate of 2 ° C./min did. The temperature at which the loss tangent (tan δ) showed a maximum was taken as the glass transition temperature, and the number of glass transition temperatures was evaluated.
~ Evaluation of surface resistivity ~
Using a 1 mm thick sheet in accordance with JIS K6911, measurement was performed with a super insulation meter (R-503 type, manufactured by Kawaguchi Electric Mfg. Co., Ltd.).

Example 1
70 parts by weight of cellulose acetate propionate (manufactured by Eastman, trade name CAP-482-20, acetyl content 2.5% by weight, propionyl content 46.0% by weight) and epichlorohydrin-ethylene oxide copolymer ( Daiso Co., Ltd., trade name: Epichromer D, chlorine content: 22 wt%) 30 parts by weight was mixed for 5 minutes at 60 ° C internal mixer (Toyo Seiki Seisakusho, Lab Plast Mill) at 200 ° C and 30 rpm. did. The obtained sample was molded into a sheet having a thickness of 1 mm by a small compression molding machine (manufactured by Tester Sangyo Co., Ltd.) and used for various evaluations. Table 1 shows the formulation and Table 2 shows the results.

Example 2
Instead of the epichlorohydrin / ethylene oxide copolymer, an epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer (Daiso Co., Ltd., trade name: Epichromer CG-102, chlorine content: 21% by weight) was used. The target mixture was obtained in the same manner as in Example 1 except that, and various evaluations were performed. Table 1 shows the formulation and Table 2 shows the results.

Example 3
70 parts by weight of cellulose acetate butyrate (made by Eastman, trade name CAB381-20, acetyl content 13.5% by weight, butyrate content 37% by weight) and epichlorohydrin / ethylene oxide copolymer (produced by Daiso Corporation, product) 30 parts by weight (name epichromer D, chlorine content 22% by weight) were mixed for 5 minutes at 200 ° C. and a rotation speed of 30 rpm using an internal mixer (laboratory plast mill, manufactured by Toyo Seiki Seisakusho Co., Ltd.) having an internal volume of 60 cc. The obtained sample was molded into a sheet having a thickness of 1 mm by a small compression molding machine (manufactured by Tester Sangyo Co., Ltd.) and used for various evaluations. Table 1 shows the formulation and Table 2 shows the results.

Example 4
Instead of the epichlorohydrin / ethylene oxide copolymer, an epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer (Daiso Co., Ltd., trade name: Epichromer CG-102, chlorine content: 21% by weight) was used. The target mixture was obtained by the same method as in Example 3 and various evaluations were performed. Table 1 shows the formulation and Table 2 shows the results.

Example 5
Furthermore, the target mixture was obtained in the same manner as in Example 1 except that 10 parts by weight of diethylhexyl adipate (trade name: Sunsocizer DOA, manufactured by Shin Nippon Chemical Co., Ltd.) was added as a plasticizer, and various evaluations were performed. Table 1 shows the formulation and Table 2 shows the results.

Example 6
Furthermore, the target mixture was obtained in the same manner as in Example 3 except that 10 parts by weight of diethylhexyl adipate (trade name: Sunsocizer DOA, manufactured by Shin Nippon Chemical Co., Ltd.) was added as a plasticizer, and various evaluations were performed. Table 1 shows the formulation and Table 2 shows the results.

Comparative Example 1
Sheets were prepared only with cellulose acetate propionate used in Example 1, and various evaluations were performed. The formulation is shown in Table 1 and the results are shown in Table 2. It is clear that the toughness is poor.

Comparative Example 2
Although a sheet was produced only with an epichlorohydrin homopolymer, it was difficult to maintain the sheet shape because it was an unvulcanized rubber, and it could not be used as a transparent sheet. Table 1 shows the formulation and Table 2 shows the results.

Comparative Example 3
Although a sheet was produced only with the epichlorohydrin / ethylene oxide copolymer used in Example 1, it was difficult to maintain the sheet shape because it was an unvulcanized rubber, and it was impossible to use it as a transparent sheet. It was. Table 1 shows the formulation and Table 2 shows the results.

Comparative Example 4
A mixture was obtained in the same manner as in Example 1 except that an ethylene / propylene copolymer (manufactured by JSR, EP921) was used instead of the epichlorohydrin / ethylene oxide copolymer, and various evaluations were performed. The formulation is shown in Table 1 and the results are shown in Table 2. It is clear that transparency and toughness are poor.

Comparative Example 5
A mixture was obtained in the same manner as in Example 1 using 70 parts by weight of the above cellulose acetate propionate and 30 parts by weight of an epichlorohydrin homopolymer (manufactured by Daiso, trade name: Epichromer H, chlorine content: 37% by weight). Various evaluations were conducted. Table 1 shows the formulation and Table 2 shows the results.

The resin composition of the present invention is suitably used for permanent antistatic sheets such as optical materials such as lighting covers and panel constituting materials for various display devices, clean room partitions, and device transport trays for countermeasures against electrostatic damage.

Claims (8)

  (A) 1 to 99% by weight of a polyepichlorohydrin polymer and (B) 99 to 1% by weight of a cellulose derivative [provided that (A) + (B) = 100% by weight] ) Anti-permanent antistatic, characterized in that the polyepichlorohydrin polymer is an epichlorohydrin / ethylene oxide copolymer and / or an epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer. Resin composition.   The permanent charge according to claim 1, wherein the epichlorohydrin / ethylene oxide copolymer and / or the epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer has a chlorine content of 20 wt% or more and 38 wt% or less. Prevention resin composition.   (B) The cellulose derivative is cellulose acetate butyrate and / or cellulose acetate propionate, and the total of the acetyl content, propionyl content and butyryl content is 40% by weight or more based on (B) the cellulose derivative. Or the permanent antistatic resin composition of 2.   The plasticizer is mixed in an amount of 1 to 30 parts by weight with respect to 100 parts by weight of the total amount of the (A) polyepichlorohydrin polymer and the (B) cellulose derivative. A permanent antistatic resin composition.   The permanent antistatic resin composition according to any one of claims 1 to 4, wherein a sheet having a thickness of 1 mm has a total light transmittance of 80% or more.   The permanent antistatic resin composition according to any one of claims 1 to 5, wherein two or more glass transition temperatures observed by dynamic viscoelasticity measurement are present.   A transparent sheet obtained by extrusion-molding the permanent antistatic resin composition according to claim 1. A transparent permanent antistatic sheet obtained by extrusion molding the permanent antistatic resin composition according to claim 1.