JPS60141525A - Readily bondable and anti-electrification polyester film - Google Patents

Abstract

PURPOSE:To produce a film excellent in ready bondability and anti-electrification property etc., by applying an aqueous dispersion of a polyester resin having a special composition on the surface of an unstretched polyester film, and stretching the film. CONSTITUTION:A water-insoluble polyester copolymer (A) prepared from a glucose constituent and dicarboxylic acid constituents that contains a sulfonic acid metal salt in an amount of 0.5-15mol% based on the total amount of the dicarboxylic acid constituents, a water soluble organic compound (B) having a boiling point of 60-200 deg.C (e.g. butyl cellosolve, etc.), water (C), inorganic particles (D) (e.g. of aluminium silicate, etc.), a polyethylene glycol (E) and an anionic antistatic agent (F) are compounded with weight ratios of (A)/(B)=100/20-5,000, (B)/(C)=100/500-1,000, and (A)/(D)=100,000/0.5-3,000 into an aqueous dispersion of the polyester resin. The dispersion is applied on an unstretched polyester film, and the film is stretched to produce a readily bondable and anti-electrification film.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a polyester film that is transparent, has excellent antistatic properties, and has excellent adhesive properties.

As is well known, polyester films have a high degree of crystallinity, excellent transparent gloss, mechanical properties, chemical resistance, heat resistance, etc., and are therefore rapidly being used year by year for a wide range of applications.

However, since general polyester films have a high degree of electrical insulation, they tend to generate and accumulate static electricity, which has the disadvantage of causing various troubles due to static electricity damage. For example, during the film forming process, printing, adhesion, bag making, packaging, and other secondary processing processes, there may be problems such as wrapping around rolls, electric shock to the human body, reduced work efficiency such as difficulty in handling, and the occurrence of printing scratches. , which can cause dirt on the film surface and reduce the product value. As methods for preventing such electrostatic damage, there are generally two methods: kneading an antistatic agent into a resin to form a film, and coating the surface of the film with an antistatic agent. Regarding polyester films, this so-called kneading-type antistatic treatment method produces an antistatic effect by causing the antistatic agent to ooze out from inside the film to the surface, but due to the high secondary transition temperature of polyester resin, the film After the film is formed, the antistatic agent does not extrude into the film at temperatures around room temperature, and due to the high film forming temperature conditions and the high reactivity of the polar groups of the polyester itself, the antistatic agent does not extrude into the film. It has been difficult because of problems such as deterioration of the polymer during film formation, coloring and deterioration of physical properties due to the blending of . Especially 2
In the case of an axially stretched polyester film, the antistatic agent on the film surface escapes and disappears during the stretching process, so it often shows no antistatic effect at all.Furthermore, many of the antistatic agents are added to the film due to the composition of the polyester film. This extremely reduces the transparency of the film, making it difficult to put it into practical use. Further, the conventional method of applying an antistatic agent to the film surface requires an extra processing step, which is economically disadvantageous.

It is extremely rare to use polyester biaxially stretched film alone for various purposes. For example, when used as a photographic film base, it is necessary to check the adhesion between gelatin layers, and for magnetic tape bases, it is necessary to check the adhesion between the magnetic layers. sex,
For drafting bases, it improves adhesion to the matting agent layer, for metal vapor deposition, it improves the adhesion to vapor-deposited metal, and when used for packaging, it improves the adhesion to ink and heat seam agents mainly composed of nitrocellulose binders. In order to achieve this, the current situation is that films are usually given appropriate surface treatments depending on their uses. However, in the case of an undercoat that generally has an affinity for the surface of a polyester biaxially stretched film,
They have the drawback of poor adhesion to the surface layer agent, and those that have affinity with the surface layer agent generally have poor adhesion to the surface of the polyester biaxially stretched film. Furthermore, as is well known in the art, if the coefficient of friction of a polyester film is large, the films will not slide against each other, and if it is extremely poor, blocking will occur, making it difficult not only to handle the film but also to make it particularly difficult to wind it up. Conventionally, this objective has been achieved by adding inorganic or organic substances to the film, either singly or in combination, in order to lower the coefficient of friction of the film. However, if a small amount is added to such a film, the effect will be small, and since a large amount is added, the transparency, turbidity, etc. of the film will decrease rapidly. In other words, there has been no film that has substantially the same transparency as a film without additives and a significantly lower coefficient of friction. Furthermore, even if the same amount of the same additive is added to polyester, the rate of decrease in the steel wire modulus largely depends on the heat treatment conditions, and the greater the heat coverage history, the greater the rate of decrease. On the other hand, a method has been proposed to obtain a film with excellent lubricity and transparency by adding polyorganosiloxane or the like to a polyester film, but as the amount of polyorganosiloxane added increases, the lubricity increases, but vice versa. However, there is a tendency for the transparency of the film to deteriorate, and the mechanical properties such as dimensional stability and Young's modulus also tend to deteriorate.Also, there is a method of knurling the film before winding it up, Conventional manufacturing methods have had various problems, such as the processed portion being trimmed or existing only on one side. As a result of intensive research, the inventors discovered a method to solve these problems.

That is, the present invention provides a mixed dicarboxylic acid component containing 0.5 to 15 moles of sulfonic acid metal group-containing dicarboxylic acid to the combined dicarboxylic acid component on at least one side of a melt-extruded unstretched polyester film or an axially oriented polyester film. A water-insoluble polyester film formed from a glycol component (a water-soluble organic compound with a boiling point of 60 to 200°C (0 water ■) inorganic particles and [F]) polyethylene glycol or its derivative °
or/and CF) anionic antistatic agent (A)/)=100/20-5000, CB)/
(C) = 100150~1000, cA) / 0
) = 10000070.5~3000 weight i If
In case f: After coating an aqueous dispersion of the blended polyester resin, this coated film is further stretched biaxially or -axially.

The polyester copolymer (4) contained in the aqueous dispersion of this invention is a dicarboxylic acid containing a sulfonic acid metal group.
This is a substantially water-insoluble polyester copolymer obtained by reacting a mixed dicarboxylic acid glycol component of 5 to 15 moles and 85 to 99.5 moles of dicarboxylic acid containing no sulfonic acid metal base. Substantially water-insoluble means that even if the polyester copolymer is stirred in hot water at 80°C, the polyester copolymer does not dissipate in hot water, and specifically, the polyester copolymer does not dissipate in hot water. 80℃
The weight loss of the polyester copolymer after being stirred in hot water for 24 hours is 5 weight or less.

The above-mentioned sulfonic acid metal base-containing dicarboxylic acids include:
Metal salts such as sulfoterephthalic acid, 5-sulfoisophthalic acid, 4-sulfophthalic acid, 4-sulfonaphthalene-2,7-dicarboxylic acid, and 51:4-sulfophenoxyfisophthalic acid are preferred, and 5-sulfophthalic acid is particularly preferred. Sodium sulfoisophthalate and sodium sulfoterephthalate. These sulfonic acid metal base-containing dicarboxylic acid components are contained in an amount of 0.5 to 15 mole based on the total dicarboxylic acid fraction, and if the amount exceeds 15 mole, the dispersibility in water will improve, but the water resistance of the polyester copolymer will deteriorate. significantly decreased,
If the amount is less than 0.5 mole, the dispersibility in water will be significantly reduced. The dispersibility of polyester copolymer in water is
Although it varies depending on the copolymer composition, the type and blending ratio of the water bathing organic compound, the smaller the amount of the dicarboxylic acid containing a sulfonic acid metal group, the better the adhesion as long as the dispersibility in water is not impaired.

Dicarboxylic acids that do not contain sulfonic acid metal bases include:
Aromatic, aliphatic, and alicyclic dicarboxylic acids can be used.

Examples of aromatic dicarboxylic acids include terephthalic acid, inphthalic acid, orthophthalic acid, and 2,6-naphthalenedicarboxylic acid. It is preferable that these aromatic dicarboxylic acids account for 40 moles or more of the total dicarboxylic acid components; if it is less than 40 moles, the mechanical strength and water resistance of the polyester copolymer will decrease. Aliphatic and alicyclic dicarboxylic acids 7 include succinic acid, adipic acid, sebacic acid, 1,3-cyclopentanedicarbone 112
,],,]2-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, and the like. Addition of these non-aromatic dicarboxylic acid components may improve adhesive performance in some cases, but generally reduces the mechanical strength and water resistance of the polyester copolymer.

The glycol component to be reacted with the mixed dicarboxylic acid may be an aliphatic glycol having 2 to 8 carbon atoms or an alicyclic glycol having 6 to 12 carbon atoms, and specifically, ethylene glycol, 1.2- Propylene glycol, 1
．． 3-propanediol, 1,4-butanediol, neopentyl glycol, 1,6-hexanediol, 1
．． These include 2-cyclohexane dimetatool, 1.3-cyclohexane dimetatool, 1.4-cyclohexane dimetatool, p-xylylene glycol, gelatin glycol, and triethylene glycol. Examples of polyethers include polyethylene glycol, polypropylene glycol, and polytetramethylene glycol.

Polyester copolymers are obtained by conventional melt polycondensation. That is, the above-mentioned dicarboxylic acid component and the glycol component are directly reacted, water is distilled off, esterification L7 is performed, and then the direct esterification method is performed, or the dimethyl ester of the above-mentioned dicarboxylic acid component and the glycol component are reacted. It can be obtained by a transesterification method in which methyl alcohol is distilled off, transesterified, and then polycondensation is carried out. In addition, melt KM condensation, menstrual blood polycondensation, etc. may also be used, and the polyester copolymer of the present invention is not limited by the polycondensation method.

To obtain the aqueous dispersion of the above polyester copolymer,
It is necessary to disperse it in water together with water-soluble organic compounds. For example, the above polyester copolymer and a water-soluble organic compound are mixed in advance at 50 to 200°C, and water is added to this mixture and dispersed by stirring, or conversely, the mixture is added to water and dispersed by stirring. Alternatively, there is a method in which a polyester copolymer, a water-soluble organic compound, and water are made to coexist and stirred at 40 to 120°C.

The water-soluble organic compound is an organic compound having a solubility in water of 20y or more at 20°C, and specifically includes aliphatic and alicyclic alcohols, ethers, esters, and ketone compounds, such as methanol, ethanol, Monohydric alcohols such as isopropanol and n-butanol, and glycols such as ethylene glycol and propylene glycol.

Glycol derivatives of methyl cellosolve, ethyl cellosolve, n-butyl cellosolve Kasa, ethers such as dioxane and tetrahydrofuran, esters such as ethyl acetate,
Ketones such as methyl ethyl ketone. These water-soluble organic compounds can be used alone or in combination of two or more. Among the above compounds, butyl cellosolve and ethyl cellosolve are preferred in terms of dispersibility in water and coatability on films.

The weight ratio of (A) polyester copolymer, (B) water-soluble organic compound, and (C) water is (A) / (
B) = 100/20~5000(B)/(C
) = 100150~1ooo.

It is important to satisfy the following. Polyester copolymer has less water-soluble organic compounds (A)/(B) than 1
If it exceeds 00720, the dispersibility of the aqueous dispersion decreases. In this case, dispersibility can be assisted by adding an interfacial occupancy agent, but if the amount of surfactant is too large, adhesiveness and water resistance will be reduced. Reverse [(A) /
If (B) is less than 10,075,000, or (B)
/ If (C) exceeds 100,150, the amount of water-soluble organic compounds in the aqueous dispersion increases and there is a risk of explosion due to the solvent during in-line coating, so it is necessary to take explosion-proof measures. It is necessary to consider compound recovery as it will cause environmental pollution and increase costs. (B) / (
When C) is less than 100/10000, the surface tension of the aqueous dispersion increases, and the wettability to the film decreases.
Application spots are likely to occur. In this case, the wettability can be improved by adding a surfactant, but if the amount of the surfactant is too large, the adhesiveness and water resistance will decrease as described above.

Furthermore, as (D) inorganic particles added to this dispersion,
Gofun, chalk, heavy coal cal, light synthetic cal, ultra-fine pure carbon cal, basic magnesium carbonate, dolomite, special calcium carbonate, kaolin, calcined clay, pyrophyllite, bentonite, serisalite, zeolite, nepheline, sinite. Talc, attapuljanite, synthetic aluminum silicate, synthetic calcium silicate, diatomaceous earth, silica powder, finely divided silicic acid, anhydrous finely divided silicic acid, aluminum hydroxide, pallite, precipitated barium sulfate, natural gypsum, gypsum, calcium sulfite, etc., and are transparent. Any material may be used in terms of slipperiness, but natural and synthetic silicic acid products are particularly preferred. It is preferable to use particles with a particle size of 0.01μ to 10μ.
Shi7i. If the particle size is 0.01 μm or less, a large amount must be used, and if the particle size is 1 μm or more, coarse projections will occur and the slipperiness will deteriorate.

The amount of ) used for (A) is (A) / (D)
= 10000010.5 to 300 ratio is good, preferably 1. < is (A) / (D) = 1000/20~10
It is 0.

Molecule as polyethylene glycol or its derivatives! The number is usually 1,000 to 50,000, and the one represented by the following general formula is typical, but is not limited thereto.

R-0(C,H,0SR HO+ CI H40+111N -(CtM40 +
rIH■ R' R, R: Hydrogen, C8~. Hydrocarbon group, epoxy group or 100R group (R is a hydrocarbon group of C8~, .) R': Hydrocarbon group of C1~!0 m+n: Number of 3~100 Note that the above C□~ Any of the 8o hydrocarbon groups is preferably a C1-to alkyl group or alkylaryl group.

Examples of commonly used polyethylene glycol derivatives include the following.

Polyethylene glycol or a derivative thereof is used in an amount of 1 to 20 times per water-insoluble polyester copolymer.

In addition, as anionic antistatic agents, higher alcohols, phosphoric acid ester salts of alkylphenol oxide ethylene adducts, various other phosphoric acid derivatives such as phosphonic acid, phofnic acid, and phosphite esters, Na salts of higher alcohol sulfuric esters, and organic Sulfuric acid derivatives such as amine salts, sulfuric ester salts of alkylphenol oxidized ethylene adducts, alkylsulfonates, and alkylarylsulfonic acids;
Examples include carboxylic acid derivatives such as the sodium salt of stearic acid sarcosinate and the triethanolamine salt of sebacic acid, but preferably the sodium salt of dodecylbenzenesulfonate, the potassium salt of octylsulfonate, the sodium salt of oligostyrenesulfonate, and the sodium salt of dibutylnaphthalenesulfonate. Examples include those containing a sulfone group, such as sodium salt and sodium salt of lauryl sulfosuccinate.

If the amount of polyethylene glycol and derivatives and anionic antistatic agent is too small, the electrostatic properties cannot be exhibited, and if the amount is too large, easy adhesion and transparency will be reduced.

The polyester film obtained by applying the aqueous dispersion of the polyester copolymer obtained in this way is a melt-extruded polyester film and an fc unstretched film, or a -axially stretched film.

Coating on a biaxially stretched film is not preferable because the film is wide and the traveling speed of the film is high, making it difficult to coat uniformly.

The amount of the aqueous dispersion applied to the polyester film is 0.01/5P/I as the amount present on the film after biaxial stretching, and the amount of the polyester copolymer (~0.01/5P/I. If the vibration is less than ol, p/-, the force to fix the inorganic particles will be weakened and the durability will deteriorate. 5.Oy/
If you apply more than J, the slipperiness will worsen.

The polyester film obtained by the method described above has excellent transparency, easy sliding properties, antistatic properties, and easy adhesion properties.

In addition, by subjecting the polyester film to a corona discharge treatment before applying the aqueous dispersion of the polyester copolymer, the coating properties of the aqueous dispersion are improved and the bond between the polyester film and the polyester copolymer coating film is improved. The adhesive elasticity between the two is improved.

In addition, the wettability and adhesion of the film surface can be improved by subjecting the polyester copolymer layer after inline coating or biaxial stretching to corona discharge treatment, corona discharge treatment under a nitrogen atmosphere, ultraviolet irradiation treatment, etc. I can do it.

The coated polyester film produced by the above method can be used as a base film for magnetic tapes, a base film for label stickers, a base film for chemical mats, a film for overhead projectors, a film for food packaging, etc. A detailed explanation of the present invention is given below. . In the examples, parts and parts are based on weight.

Example 1 (1) Production of transparent polyethylene terephthalate Ethylene glycol 200 +nj? Lead hydroxide inside
Dissolve b(OH)m 2.2y (pbO095X 10 mol) and add Gem, 2.0p (1,9X
10-1 mol) was added and heated under reflux at 197°C, the boiling point of ethylene glycol, to obtain a clear solution in about 30 minutes. Next, polyethylene terephthalate was produced using this solution as a polycondensation catalyst. 620 parts of dimethyl terephthalate, 480 parts of ethylene glycol, zinc acetate Zn (OAc)z as a transesterification catalyst, 2H
100,036 parts were placed in a transesterification reactor, and the transesterification reaction was carried out while gradually raising the temperature from 150°C to 230°C, and it took 120 minutes to complete the distillation of methanol.

Next, the contents were transferred to the i#i combiner, 2.7 parts of the above catalyst solution was added as a polycondensation catalyst, and the temperature was gradually raised while reducing the pressure, and the temperature was raised to 280°C over 1 hour under a high reduced pressure of 0.5 mmH9. The polymer obtained by carrying out the polycondensation reaction for 25 minutes had an intrinsic viscosity of 0.63 and a melting point of 262°C.

(2) Production of aqueous dispersion of polyester copolymer Dimethyl terephthalate 117 parts (49 mol), dimethyl inphthalate 117 parts (49 mol 96), diethylene glycol 03 parts (50 mol%), diethylene glycol 58 yen 15 (50 mol %) mol%), zinc acetate 0.08 part,
0.08 part of three-liquefied antimony was added to 40 to 22 parts of antimony in a reaction vessel.
The temperature was raised to 0°C and the transesterification reaction was carried out for 3 hours. Then, 9 parts (2 molti) of 5-sodium sulfoiphthalic acid was added and the esterification reaction was carried out at 220 to 260°C for 1 hour. Polycondensation reaction was carried out at 0.2 Hf) for 2 hours, with an average molecular weight of -4118000 and a softening point of 1.
A polyester copolymer at 40°C was obtained. 300 parts of this polyester copolymer and 140 parts of n-butylcerone were stirred in a container at 150 to 170°C for about 3 hours to obtain a homogeneous and viscous melt. After about 1 hour, a homogeneous pale white aqueous dispersion U with a solid content concentration of 30% was obtained, and this was further added to the VC and the Thyloid 150e polyester copolymer at 5 o o
ppm.

5% polyethylene glycol with a molecular weight of 320,000;
A coating solution with a solid content concentration of 3% was obtained by diluting 1% sodium dobumylbenzenesulfonate, 4500 parts water, and 4500 parts ethyl alcohol.

+31 4-line coat film production (polyethylene terephthalate produced in step 11 was melt-extruded at 280 to 300°C, cooled with a cooling roll at 15°C to a thickness of 100°
0 micron unstretched film was obtained, and this unstretched film was rolled 3 times in the longitudinal direction between a pair of rolls at different circumferential speeds at 85°C.
．． Stretched 5 times, applied the above coating solution using an air knife method, dried with hot air at 70°C, then stretched 3.5 times in the transverse direction at 98°C with a tenter, and further [heat-set at 200 to 210°C]. A biaxially stretched coated polyester film having a thickness of 100 microns was obtained. Also, a compound shop for polyethylene glycol and its derivatives (MW5000) in the examples.
] Also, the compound of the anionic antistatic agent is as follows.

Sodium dobumylbenzenesulfonate [1] Lithium oligostyrene sulfonate [2] Sodium dialkyl sulfosuccinate [3] In Table 1, TPA is equivalent to terephthalic acid, IPA is equivalent to inphthalic acid, and SS is 5-sodium sulfoin. Phthalic acid, EG is ethylene glycol,
DEG is diethylene glycol, NPG is neopentyl glycol, and PEG is polyethylene glycol.

Examples 2-3 Example 1 except that the EPG derivative was changed in Example 1
A biaxially stretched film was obtained in the same manner as above.

Examples 4 to 5 All phases of biaxially stretched films were prepared in the same manner as in Example 1 except that the antistatic property was changed.

Examples 6 to 7 Biaxially stretched films were obtained in the same manner as in Example 1, except that the amount of applied force 1 of the thyroid 150 was changed in Example 1.

Example 8 A biaxially stretched film was obtained in the same manner as in Example 6 except that Thyroid 240 was added to polyethylene terephthalate.

Example 9 A biaxially stretched film was obtained in the same manner as in Example 1 except that DEG was replaced with NPC.

Example 10 A biaxially stretched film was prepared in the same manner as in Example 9 except that the amount of SS treatment was completely increased.

Example 11 A biaxially stretched film was obtained in the same manner as in Example 9 except that PEG was added to 1 mol of E G.

Example 12 A biaxially stretched film was obtained in the same manner as in Example 12 except that the PEG compound in Example 11 was changed.

Comparative examples 1 to 3 In Example 1, thyroid 150. PEG.

A biaxially stretched film was obtained in the same manner as in Example 1 except that one of the antistatic properties was not added.

Comparative Examples 4 to 5 A biaxially stretched film was obtained in the same manner as in Example 1 except that the amount of PEG was changed to a value other than the claimed range.

Comparative Examples 6 to 7 A biaxially stretched film was obtained in the same manner as in Example 1 except that the amount of antistatic agent was changed to a value other than the claimed range.

Comparative Example 8 A biaxially stretched film was obtained in the same manner as in Example 1 except that Thyroid 150 in Example 1 was replaced with Thyroid 600 having a large particle size.

Comparative Example 9 A biaxially stretched film was prepared in the same manner as in Example 8 except that the amount of thyroid 240 in the polyethylene terephthalate was changed to a value other than the claimed range.

Comparative Example 10 A biaxially stretched film was obtained in the same manner as in Example 1, except that the amounts of SSI and Thyroid 150 in Example 1 were added in amounts exceeding the claimed range.

Table 2 The haze in Table 2 is JIS K67! 4, using a haze meter manufactured by Nippon Seimitsu Kogaku Co., Ltd.

The friction coefficient is a value measured on both coated and uncoated surfaces using Tensilon manufactured by Toyo Seiki Co., Ltd. in accordance with ASTM-1894.

Blocking property is 8 when the coated and uncoated surfaces are in close contact.
x 12 ('I11), sandwiched it between two silicone rubber sheets, further sandwiched between glass plates, applied a load of ? Leave it in an RH atmosphere for 24 hours, then remove the film and visually judge the blocking state between the films.
% or more is indicated by ×.

Adhesive properties are: ■Polyvinyl alcohol ■Vinyl chloride vinyl acetate copolymer ■Polymethyl methacrylate with a highly compatible red dye added to a thickness of 3 μm.
Nichiban cellophane tape was applied and peeled off at a peeling angle of 180°.

10. No flaking at all. 5 pieces with half peeled off
．． Items with hardware peeled off were ranked as 1.

Surface resistance was measured using a specific resistance measuring device manufactured by Takeda Riken.

Measurement was carried out under the conditions of an applied voltage of 500 V, 20° C., and 65% RH. In Table 2, the method of the present invention exhibits good properties in terms of haze friction coefficient, blocking property, adhesion property, and surface resistance (antistatic property). However, from the table, it can be seen that when no thyroid was added (Comparative Example 1), the stability and blocking properties were poor.
When PEG or antistatic agent is not added (Comparative Example 2.3) When the adhesion or antistatic property is poor and the amount of PEG is too small (Comparative Example 4) When the adhesion is poor and there is too much PEGiJ: (Comparative Example 5) When haze, slipperiness, adhesiveness are undesirable, easy to block, and there is too little antistatic agent (Comparative Example 6) When antistatic properties are poor and there is too much reverse V (Comparative Example 7) Haze, Poor adhesion, easy blocking, and large thyroid particle size (Comparative Example 8) Poor haze and slipperiness, and when a large amount of siloid was added to polyethylene terephthalate (Comparative Example 9) Poor haze and too much SSI It can be seen that when there are too many thyroids 150 (Comparative Example 10), the haze is poor and the blocking property is poor.

Patent applicant: Toyobo Co., Ltd. March 1985 280 1. Case description 1982 Patent Application No. 249947 2 Name of the invention PA jM m Method for manufacturing antistatic polyester film (name before amendment: Easy-adhesion antistatic polyester film) 3.
It's time to make corrections! Relationship with 1 Patent applicant: 112-8 Yumi, Dojihama 2-chome, Kita-ku, Osaka City (1) Title column of the invention in the application and specification■ Claims column in the specification (3) Details of the invention in the specification Explanation Column 5, Contents of Amendment (1) The title of the invention in the application and specification is corrected to "Process for producing easily adhesive antistatic polyester film."

■ Revise the scope of claims in the specification + IE as shown in the attached sheet.

(3) The detailed explanation column of the specification should be as follows? l Correct.

■ In the 4th line of page 4, ``for temperature'' is corrected by 31 to ``for 111IIi degrees''.

■　No. 500, line 7, 1” Correct "heat sealing agent" to "heat sealing agent".

■ Page 7, lines 18 to 19 r(B)/(c) = 400150-1000J
)/(C) = 100150-10000J.

■ No. 700, line 20 Correct "aqueous dispersion" to "aqueous dispersion".

■ Page 14, line 20 to page 15, line 1 1''r (
A)/(D)=10000010.5~300''
Correct ril to (A)/(D)=10000010.5 to 3000J.

■ Correct "hofphinic acid" from the bottom line of page 1600 to the first line of page 17 to "bosphinic acid."

■ Line 18, lines 8 to 9] ro, 0175
Pressure g/i'' to ro, 01 to 5 g/i''.

■Page 19, line 11 “1 Add the following sentence after "Other".

``Used for films for purposes such as.'' ■ Page 20, line 4 rZn(OAc)
・2H, correct J■ to OJ.

[Phase] Page 20, line 17 [1] "103 parts (50 mol%) of diethylene glycol" is
Corrected to 103 parts (50 mol%) of ethylene glycol.

``Page 21, line 14]'' ``Sodium dobumylbenzenesulfonic acid'' is corrected to ``Sota dodecylbenzenesulfonic acid''.

@ On page 22, line 16, "dobumylbenzenesulfonic acid soda" is corrected to "dodecylbenzenesulfonic acid sorta."

[Phase] Page 24, line 8 "rEPG derivative" is corrected to "rPEG derivative."

■ Change "antistatic property" to "antistatic agent" on page 24, line 11 and page 25, line 18, 71' tl.

[Phase] Page 26, line 5 Correct "Amount of antistatic agent" to "111 antistatic agent."

[Phase] Page 29, line 9 “1 Added to antistatic agent 1■” [Antistatic agent f! i(lmu ka J
Correct.

■Page 29, line 14 “1 rCorrect "antistatic agent" to "antistatic agent".

Attachment Claims (1) On at least one side of the melt-extruded unstretched polyester film or -axially stretched polyester film (A) 0.5 to 15 mol% of sulfonic acid metal base based on the total dicarboxylic acid components. A mixed dicarboxylic acid component and a glycol component impregnating the dicarboxylic acid contained therein.

Water-insoluble polyester copolymer (B) formed from
Boiling point 60-200°C water-soluble organic compound (C) water (D) inorganic particles and (E) polyethylene glycol or its derivative or/and (F) anionic antistatic agent (A)/(B) = 100 /20~56 o ol(B
)/(C)=100150-10000. (A)/
(D) = Easy adhesion and antistatic property characterized by applying an aqueous dispersion of polyvarnish resin blended at a weight ratio of 10000010.5 to 3000, and then further biaxially stretching or -axially stretching the woven film. Manufacturing method of polyester film.

■ The manufacturing method according to claim 1, wherein the polyester film is a polyethylene terephthalate film.

l left.

Claims (1)

[Scope of Claims] (1) At least one side of a melt-extruded unstretched polyester film or -axially stretched polyester film contains dicarboxylic acid in an amount of 0.5 to 15 moles more than the total dicarboxylic acid component. of a water-insoluble polyester copolymer formed from a mixed dicarboxylic acid component and a glycol component containing (C) water, (2) inorganic particles, and (2) polyethylene glycol or its derivatives or /
and ■Anionic antistatic agent (A)/Q3)-100720-5000, CB)
/ (C) -100150~1000. Prisoner/(6)-
1. A method for producing an easily adhesive antistatic film, which comprises applying an aqueous dispersion of a polyester resin blended at a weight ratio of 1,000,0010,5 to 3,000, and then further biaxially or -axially stretching the coated film. (2) The manufacturing method according to claim 1, wherein the polyester film is a polyethylene terephthalate film. (3) Average primary particle size of inorganic particles is 0.01μ to 10μ
The method according to claim 1. (4) The amount of external lubricant in the melt-extruded unstretched polyester film or -axially stretched polyester film is 3001
) The method according to claim 1, wherein p771 or less. (6) Addition of polyethylene glycol or its derivatives (6)
) The amount of anionic antistatic agent added is