JP6624483B2 - Polyvinyl chloride resin composition and sheet or film comprising the resin composition - Google Patents

Description

  The present invention relates to a polyvinyl chloride resin composition and a sheet or film comprising the resin composition. More specifically, the present invention relates to a polyvinyl chloride resin composition having flexibility, transparency, and excellent slip properties, and a sheet or film made of the resin composition.

  BACKGROUND ART Polyvinyl chloride-based resins are widely used after being molded into films and sheets as resins having excellent flexibility and transparency. Above all, it is widely used in the field of miscellaneous goods such as clothing packaging, card cases, clear cases, and tablecloths. When used for these purposes, a plasticizer is used to impart flexibility to the polyvinyl chloride resin.

  However, when a plasticizer is used for the polyvinyl chloride resin, the resin exhibits tackiness. For example, when formed into a film or sheet, the surface of the film or sheet shows tackiness, and the surface of the film or sheet wound in a roll easily adheres to each other. In addition, there is a problem that the peeling between the films or sheets is poor, the productivity is reduced, and blocking occurs at the product stage.

  To solve this problem, conventionally, the surface of the film or sheet is embossed or mixed with solid fine particles to roughen the surface, reduce the adhesiveness of the film or sheet, and improve workability. Or a method of spraying a slip agent such as starch at the stage of processing a film or sheet to prevent sticking.

As a method using the slip agent, a technique having a slip property by providing a coating layer having a slip property on the surface of a film or sheet is used.
For example, Patent Document 1 proposes a technique in which a coating layer in which an organic polymer, starch particles, and an organic amide compound are mixed is provided as a coating layer having excellent slipperiness.
Further, Patent Document 2 discloses a sheet or film having excellent anti-blocking properties and slipperiness, wherein a suspension obtained by mixing starch and water and / or alcohol is atomized or atomized to form a sheet. Alternatively, there has been proposed a technique of applying the composition to the surface of a film.

  However, the method of reducing the adhesiveness by embossing the film or sheet or incorporating solid fine particles impairs the transparency of the film or sheet and reduces the content of the package or clear case. There was a problem that visibility deteriorated. In addition, the method of spraying starch or the like as a slipping agent to prevent sticking has a problem that a step of removing starch is required before the final product, which is troublesome.

  In particular, as in Patent Documents 1 and 2, when a slip agent is sprayed on the surface of a film or sheet to form a coating layer for preventing adhesion, fine powder such as starch used in the slip agent is used in the air. The work environment may be remarkably deteriorated by scattering to the surface, the fusing performance at the time of the secondary processing may be deteriorated, and the film or sheet after coating may be wound up in a roll shape and stored, so that the coating layer However, there is a problem that the surface of the opposite film or sheet is roughened, and the transparency is impaired.

JP-A-48-84128 JP-A-7-179632

  The present invention relates to a polyvinyl chloride resin composition using a plasticizer and a sheet or film made of the resin composition, which has flexibility and transparency and is excellent in slip properties. And a sheet or film comprising the resin composition.

The present inventors have conducted intensive studies, and as a result, using a polyvinyl chloride resin composition containing a plasticizer and a partial ester compound of a carboxylic acid condensate in a polyvinyl chloride resin having a specific gel fraction. As a result, the above object has been achieved, and the present invention has been completed.
That is, the present invention relates to the following [1] to [ 5 ].

[1] 100 to 100 parts by mass of a polyvinyl chloride resin (A) having a gel fraction of 6 to 20% by mass, 20 to 40 parts by mass of a plasticizer (B), and a partial ester compound of a carboxylic acid condensate (C ) Containing 0.05 to 1.0 parts by mass , wherein the partial ester compound (C) of the carboxylic acid condensate is a dimer acid or trimer acid having 30 to 60 carbon atoms, or an anhydride thereof, which is a monoalcohol Or a compound obtained by esterification with a monoepoxy compound, wherein the partial ester compound (C) of the carboxylic acid condensate has an esterification rate of 10 to 90%, an acid value of 10 mg KOH / g or more, and a molecular weight of 1,000 to 20,000. polyvinyl chloride resin composition, characterized in that it.
[ 2 ] The polyvinyl chloride resin composition according to the above [ 1 ], wherein the plasticizer (B) is an adipic acid plasticizer.
[ 3 ] The polyvinyl chloride resin (A) is a substantially uncrosslinked polyvinyl chloride resin (A-1) and a crosslinked polyvinyl chloride resin (A-2) having a gel fraction of 20 to 50% by mass. And (A-1): (A-2) = 50 to 90:50 to 10 (mass ratio), wherein the polyvinyl chloride-based material according to the above [1] or [2]. Resin composition.
[ 4 ] A sheet or film comprising the polyvinyl chloride resin composition according to any one of the above [1] to [ 3 ].
[ 5 ] A multilayer sheet or multilayer film having the sheet or film according to the above [ 4 ].

  According to the method of the present invention, even when a plasticizer is used, it is possible to obtain a polyvinyl chloride-based resin composition having excellent slip properties and a sheet or film made of the resin composition. Further, the sheet or film of the present invention has flexibility and transparency, does not require a step of removing starch, does not significantly impair the working environment, and has a fusion performance such as secondary processing. This has the effect of suppressing the occurrence of defects.

The polyvinyl chloride resin composition of the present invention comprises 20 to 40 parts by mass of the plasticizer (B) and 100 parts by mass of the polyvinyl chloride resin (A) having a gel fraction of 6 to 20% by mass. A polyvinyl chloride resin composition containing a partial ester compound (C) of an acid condensate.
Hereinafter, the polyvinyl chloride resin composition of the present invention and a sheet or film made of the resin composition will be described in detail. Note that, in the present specification, a rule that is preferable can be arbitrarily adopted, and a combination of preferable ones is more preferable.

[Polyvinyl chloride resin composition]
<Polyvinyl chloride resin (A)>
In the polyvinyl chloride resin composition of the present invention, a polyvinyl chloride resin is used as the component (A).
The polyvinyl chloride resin used in the present invention is various polymers having vinyl chloride as a main monomer, and examples thereof include a homopolymer of vinyl chloride, and various copolymers with a vinyl chloride monomer. Examples of the copolymer with a vinyl chloride monomer include vinyl chloride copolymers such as urethane-vinyl chloride copolymer, ethylene-vinyl chloride copolymer, vinyl acetate-vinyl chloride copolymer, and ethylene-vinyl acetate-vinyl chloride copolymer. Polymers.
The vinyl chloride monomer homopolymer and the vinyl chloride monomer copolymer may be used alone or in combination of two or more.

  The average degree of polymerization of the polyvinyl chloride resin is not particularly limited, but from the viewpoint of processability and moldability, the average degree of polymerization based on JIS K6721 is preferably 700 to 1700, and is 800 to 1500. More preferably, it is more preferably 900 to 1300.

  The polyvinyl chloride resin (A) used in the present invention needs to have a gel fraction of 6 to 20% by mass. If the gel fraction is less than 6% by mass, the slip property is undesirably reduced. On the other hand, if the gel fraction exceeds 20% by mass, the transparency is undesirably reduced. The gel fraction is preferably from 8 to 18% by mass, more preferably from 10 to 15% by mass.

  The method for adjusting the gel fraction of the polyvinyl chloride resin (A) used in the present invention to 6 to 20% by mass is not particularly limited. By using a cross-linking agent during or after the polymerization in the production of, a polyvinyl chloride resin having a predetermined gel fraction can be obtained. For example, after polymerization using a vinyl chloride monomer, it is possible to obtain a substantially uncrosslinked polyvinyl chloride resin, and then obtain a polyvinyl chloride resin having a predetermined gel fraction by adding a crosslinking agent. it can.

  Examples of the crosslinking agent include diallyl compounds such as diallyl phthalate, diallyl terephthalate, diallyl maleate, and divinyl benzene; dimethacrylate compounds such as polyethylene glycol diacrylate and 1,3-butylene methacrylate; diethine glycol diacrylate; Diacrylate compounds such as 3,3-butylene diacrylate, triacrylate compounds such as trimethylolpropane trimethacrylate and trimethylolethanetrimethacrylate, and tetramethylolmethane triacrylate.

  The polyvinyl chloride resin (A) used in the present invention is used in combination with a substantially uncrosslinked polyvinyl chloride resin (A-1) and a crosslinked polyvinyl chloride resin (A-2). Thereby, the polyvinyl chloride resin (A) having a specified gel fraction can be obtained.

  The crosslinked polyvinyl chloride resin (A-2) refers to a partially uncrosslinked substantially uncrosslinked polyvinyl chloride resin (A-1). The substantially uncrosslinked polyvinyl chloride resin (A-1) refers to a polyvinyl chloride resin having a gel fraction of less than 1% by mass.

  When the polyvinyl chloride resin (A) used in the present invention is used in combination with a substantially uncrosslinked polyvinyl chloride resin (A-1) and a crosslinked polyvinyl chloride resin (A-2), The mixing ratio of the substantially uncrosslinked polyvinyl chloride resin (A-1) and the crosslinked polyvinyl chloride resin (A-2) is (A-1) :( A-2) in a mass ratio of 50 to 90. : 50 to 10, preferably 60 to 80: 40 to 20. The gel fraction of the crosslinked polyvinyl chloride resin (A-2) is preferably 20 to 50% by mass, more preferably 25 to 50% by mass, and 30 to 50% by mass. Is more preferred. Specific examples of such a crosslinked polyvinyl chloride resin (A-2) include “K series” and “XEL series” manufactured by Kaneka Corporation.

The gel fraction was measured by adding a vinyl chloride resin to tetrahydrofuran so as to have a concentration of 3% by mass, dissolving with stirring at 50 ° C., and allowing it to stand at the same temperature for 30 minutes to precipitate insolubles and remove the supernatant. Then, the same amount of tetrahydrofuran as used at the time of dissolving the resin is added again, and the resin is redissolved. After repeating the same operation twice, excess methanol was added to the remaining insolubles in tetrahydrofuran, suction filtration was performed using filter paper, and the resin remaining on the filter paper was dried at 60 ° C. for 7 hours, and the dry weight was reduced. By measuring, the mass fraction of the crosslinked gel contained in the vinyl chloride resin before dissolution of tetrahydrofuran can be calculated and obtained.
When two or more kinds of polyvinyl chloride resins having a known gel fraction are mixed and used, the gel fraction of the polyvinyl chloride resin mixture is proportional to the known gel fraction and the mixed mass ratio thereof. It can be obtained by calculation.

<Plasticizer (B)>
The polyvinyl chloride resin composition of the present invention contains a plasticizer (B). Examples of the plasticizer (B) used in the polyvinyl chloride resin composition of the present invention include phthalic acid such as di-2-ethylhexyl phthalate, di-n-octyl phthalate, diisodecyl phthalate, dibutyl phthalate, and dihexyl phthalate. Ester plasticizers; adipic acid plasticizers represented by adipic acid esters such as dioctyl adipate, diisononyl adipate, diisodecyl adipate, dibutoxyethyl adipate, and bis (butyltriglycol adipate); Epoxy plasticizers such as epoxidized linseed oil and liquid epoxy resin; Phosphate plasticizers such as triphenyl phosphate, trixylyl phosphate and tricresyl phosphate; dioctyl sebacate, trimellitate, citric acid ester Can be exemplified Le, other plasticizers such as benzoic acid esters.

  Above all, adipic acid plasticizers such as dioctyl adipate, diisononyl adipate, diisodecyl adipate, dibutoxyethyl adipate and bis (butyltriglycol adipate) are used as partial esters of the carboxylic acid condensate used in the present invention. It has good compatibility with the compound and can provide more preferable slip performance.

  The polyvinyl chloride resin composition of the present invention contains 20 to 40 parts by mass of the plasticizer (B) based on 100 parts by mass of the polyvinyl chloride resin (A) having a gel fraction of 6 to 20%. It takes things. When the amount of the plasticizer (B) is less than 20 parts by mass, the flexibility is reduced and the moldability is deteriorated. On the other hand, if the plasticizer (B) exceeds 40 parts by mass, stickiness increases when forming into a film or sheet, which is not preferable. The plasticizer (B) is preferably from 25 to 40 parts by mass, more preferably from 30 to 40 parts by mass.

<Partial ester compound of carboxylic acid condensate (C)>
The polyvinyl chloride resin composition of the present invention needs to contain a partial ester compound (C) of a carboxylic acid condensate together with the plasticizer (B). Examples of the partial ester compound (C) of the carboxylic acid condensate include a compound obtained by esterifying a dimer acid or trimer acid having 30 to 60 carbon atoms or an anhydride thereof with a monoalcohol or a monoepoxy compound. Can be mentioned. The esterification rate is preferably 10 to 90%, and the acid value is preferably 10 mgKOH / g or more. If the esterification ratio is outside this range, it is difficult to obtain open cells. Further, the molecular weight (weight average molecular weight in terms of GPC polystyrene) of the partial ester compound of the carboxylic acid condensate is preferably about 1,000 to 20,000.

  Here, examples of the monoalcohols and monoepoxy compounds include saturated aliphatic, unsaturated aliphatic, alicyclic compounds, aromatic alcohols and epoxy compounds. Alcohols and epoxy compounds containing an ether group in the molecule may be used. Specific examples include stearyl alcohol, oleyl alcohol, alkyl glycidyl ethers having 12 or more carbon atoms, branched alkyl alcohols having 12 or more carbon atoms, oxo alcohol polyethylene oxide ethers, and alkoxyoxypolyalkylene glycols having a molecular weight of about 200 to 1200. be able to. Here, examples of the alkoxyxy polyalkylene glycol include methoxy polyethylene glycol, methoxy polypropylene glycol, and the like.

  As the partial ester compound of the carboxylic acid condensate, a commercially available product can be used. Examples of commercially available products include BYK-P4100 (manufactured by Big Chemie Japan).

The polyvinyl chloride-based resin composition of the present invention contains 100 parts by mass of the polyvinyl chloride-based resin (A) having a gel fraction of 6 to 20%, and a partial ester compound (C) of a carboxylic acid condensate. The content is preferably 0.05 to 1.0 part by mass, more preferably 0.1 to 0.7 part by mass, and even more preferably 0.15 to 0.5 part by mass.
When the content of the partial ester compound (C) of the carboxylic acid condensate is 0.05 parts by mass or more, the slip performance can be further improved when formed into a film or a sheet. By setting the amount to be not more than part by weight, problems due to bleed-out can be suppressed, and the moldability becomes more excellent.

<Other additives>
The polyvinyl chloride resin composition of the present invention contains a known additive such as a stabilizer, a lubricant, an antistatic agent, a weathering aid, and a coloring agent, if necessary, as long as the effects of the present invention are not impaired. Is also good.

  Examples of the stabilizer include, but are not particularly limited to, zinc stearate, zinc palmitate, zinc laurate, zinc octanoate, zinc ricinoleate, zinc 2-ethylhexoate, zinc naphthenate, and tin stearate. Metal soaps such as lead, lead stearate, dibasic lead stearate, lead naphthenate; lead white, basic lead silicate, tribasic lead sulfate, tribasic lead phosphite, tribasic lead maleate, Lead-based stabilizers such as basic lead phthalate, silica gel coprecipitated lead silicate and lead normal salicylate; organic tin-based stabilizers such as dibutyltin dilaurate, dibutyltin malate, dibutyltin mercaptide; barium-zinc composite stabilizer, calcium- Zinc composite stabilizer, aluminum-magnesium-zinc composite stabilizer, cadmium-barium-zinc composite stabilizer, cadmium-barium -Epoxy compounds such as epoxidized vegetable oils, bisphenol type epoxy compounds, epoxy group-containing acrylic polymers, etc., such as lead composite stabilizers, calcium-magnesium-zinc composite stabilizers, can be used by mixing two or more. You can also.

  Examples of the above lubricant include pure hydrocarbons such as liquid paraffin, natural paraffin, microwax, synthetic paraffin and low molecular weight polyethylene; halogenated hydrocarbons; fatty acids such as higher fatty acids and oxy fatty acids; fatty acid amides and bis fatty acids Fatty acid amides such as amides; lower alcohol esters of fatty acids, polyhydric alcohol esters of fatty acids such as glyceride, polyglycol esters of fatty acids, ester systems such as fatty alcohol esters of fatty acids (ester wax); metal soaps, fatty alcohols, Examples include polyhydric alcohols, polyglycols, polyglycerols, partial esters of fatty acids and polyhydric alcohols, partial esters of fatty acids and polyglycols, and partial esters of polyglycerol. Among them, lower alcohol esters of fatty acids excellent in high-temperature decomposition inhibiting function, polyhydric alcohol esters of fatty acids such as glyceride and partial esters thereof are particularly preferable. These can be used alone or in combination of two or more.

  As the above antistatic agent, an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant can be used. Examples of the anionic surfactant include fatty acid salts, higher alcohol sulfates, liquid fatty oil sulfates, aliphatic amines, amide sulfates, dibasic fatty acid ester sulfones, fatty acid amide sulfonates, and alkylaryls. Sulfonates, formalin-condensed naphthalene sulfonates, mixtures thereof, and the like can be given. Examples of the cationic surfactant include aliphatic amine salts, quaternary ammonium salts, alkylpyridium salts, and mixtures thereof. Examples of the nonionic surfactant include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenol esters, polyoxyethylene alkyl esters, sorbitan alkyl esters, polyoxyethylene sorbitan alkyl esters, and mixtures thereof. Can be. A mixture of a nonionic surfactant and an anionic surfactant or a cationic surfactant may be used. Examples of the amphoteric surfactant include an imidazoline type, a higher alkylamino type (betaine type), a sulfate ester, a phosphate ester type, and a sulfonic acid type. Among them, a nonionic surfactant having a low high-temperature decomposition inhibiting function is preferable, and among them, sorbitan alkyl esters are more preferable.

  As the weathering aid, copper organic carboxylate, copper chelate complex compound, and inorganic copper compound are preferable. Examples of the organic copper carboxylate include copper stearate, copper palmitate, copper laurate, copper octylate, copper acetate, copper benzoate, copper pt-butyl benzoate, copper 1,2-hydroxystearate, and maleic acid. Copper and copper naphthenate are exemplified. Examples of the copper chelate complex compound include copper dialkylthiocarbamate such as copper dimethylthiocarbamate and copper dibutylthiocarbamate, and copper dialkyldithiophosphate. Examples of the inorganic copper compound include copper chloride, copper sulfate, copper carbonate, copper oxide, copper hydroxide and the like.

  The polyvinyl chloride resin composition of the present invention comprises a polyvinyl chloride resin (A) having a gel fraction of 6 to 20%, a plasticizer (B), a partial ester compound (C) of a carboxylic acid condensate, and optionally There is no particular limitation on the mixer used for mixing other additives or the kneader used for kneading, provided that it can substantially uniformly mix and knead the compound. Examples of the mixer include a Henschel mixer, a ribbon blender, and a planetary mixer, and examples of the kneader include a single-screw extruder, a twin-screw extruder, a roll mill, a Banbury mixer, a kneader, and an intensive mixer. While kneading under shearing force. The polyvinyl chloride resin composition of the present invention may be in a powder form or a pellet form.

[Sheet or film]
The sheet or film of the present invention can be obtained by forming the polyvinyl chloride resin composition of the present invention into a sheet or a film.
The thickness of the sheet or film of the present invention is not particularly limited, but is preferably 0.05 to 3.0 mm, more preferably 0.07 to 2.0 mm, and still more preferably 0.1 to 1.0 mm. In particular, 0.1 to 0.8 mm is preferable. The sheet and the film of the present invention are distinguished from each other by those specified in Japanese Industrial Standards. Those having a thickness of less than 0.25 mm are regarded as films, and those having a thickness of 0.25 mm or more are regarded as sheets. .

  As the method for forming the sheet or film in the present invention, the polyvinyl chloride resin composition of the present invention is used, and a known forming method can be used. For example, it can be formed into a sheet or film by performing calendering or extrusion using a T-die. Further, it can be formed into an inflation film by performing inflation molding. As a method for continuously producing a sheet or a film, any molding method is suitable, and in particular, in the present invention, a calender molding method is suitable.

[Multilayer sheet or multilayer film]
When a multilayer sheet or a multilayer film is formed by using the sheet or film in the present invention, it is sufficient that the multilayer sheet or the multilayer film has a sheet or film made of the polyvinyl chloride resin composition. A multilayer sheet or a multilayer film can be formed by providing a coat layer having a function by surface treatment such as prevention and damage prevention.
Examples of the resin used for the coat layer having such a function include a transparent acrylic resin and a urethane resin.

  The present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. In addition, the measurement evaluation in an Example and a comparative example was performed by the method shown below. Materials used in Examples and Comparative Examples are as follows.

<Evaluation of total light transmittance>
The total light transmittance (%) at a wavelength of 555 nm of the obtained sheet was measured using a spectrophotometer UV-3500 manufactured by Hitachi, Ltd. The higher the value, the better the transparency.

<Evaluation of static friction coefficient>
The static friction coefficient was measured according to JIS K7125 (Test method for friction coefficient of plastic film and sheet). The lower the value, the better the slip property.

<Evaluation of slipperiness during cutting>
The obtained sheet is cut into a 10 cm square size, and six sheets are stacked. Next, a metal ruler is applied to the center of the surface of the stacked sheets to prevent the sheets from shifting, and all the six sheets are cut into two equal parts by a single cut using a cutter knife. Thereafter, the holding of the metal ruler was released, and the state where the six sheets were loosened was observed.
The evaluation was performed based on the following criteria.
：: The sheet is broken without blocking. ○: The sheet is slightly blocked but is loose. X: The sheet is blocked and not broken.

<Materials used in Examples and Comparative Examples>
1. Polyvinyl chloride resin (A)
A-1 (1): uncrosslinked polyvinyl chloride resin ("Product name; TH-1000", manufactured by Taiyo Vinyl Co., Ltd., gel fraction: 0% by mass, average polymerization degree: 1000)
A-2 (1); cross-linked polyvinyl chloride resin ("K10M" manufactured by Kaneka Corporation, gel fraction: 43% by mass, average polymerization degree of soluble component: 1080)
2. Plasticizer (B)
B-1: adipic acid-based plasticizer ("Product name; DINA", diisononyl adipate, manufactured by J-PLUS Co., Ltd.)
B-2: phthalic acid-based plasticizer (product name; DOP, manufactured by J-PLUS Co., Ltd., di (2-ethylhexyl) phthalate)
3. Partial ester compound of carboxylic acid condensate (C)
・ C-1: BYK-P4100 manufactured by BYK Japan KK
4. Stearic acid [slip agent (lubricant)]: (Shin Nippon Rika Co., Ltd. “Product name; Stearic acid 2000”)

Example 1
70 parts by mass of uncrosslinked polyvinyl chloride resin [A-1 (1)], 30 parts by mass of crosslinked polyvinyl chloride resin [A-2 (1)], 32 parts by mass of adipic acid plasticizer (B-1) Parts, a raw material consisting of 0.35 parts by mass of a partial ester compound of a carboxylic acid condensate (C-1), 5 parts by mass of epoxidized soybean oil and 2 parts by mass of a Ba-Zn-based stabilizer were mixed using a Henschel mixer, Then, the mixture was kneaded at 180 ° C. for 7 minutes using a Banbury mixer. The obtained kneaded material was calender-formed using two rolls to produce a sheet having a thickness of 0.4 mm. The gel fraction in the total amount of the polyvinyl chloride resin [A-1 (1)] and the crosslinked polyvinyl chloride resin [A-2 (1)] used as the component (A) was 12.9. %. The obtained sheet was evaluated, and the results are shown in Table 1.

Example 2
A sheet was prepared and evaluated under the same conditions as in Example 1 except that the phthalic acid-based plasticizer (B-2) was used as the plasticizer (B) and the content was changed to 35 parts by mass. Table 1 shows the results.

Example 3
Same as Example 1 except that the uncrosslinked polyvinyl chloride resin [A-1 (1)] was changed to 75 parts by mass and the crosslinked polyvinyl chloride resin [A-2 (1)] was changed to 25 parts by mass. A sheet was prepared under the following conditions, and the evaluation was performed. Table 1 shows the results.

Example 4
Same as Example 1 except that the uncrosslinked polyvinyl chloride resin [A-1 (1)] was changed to 66 parts by mass and the crosslinked polyvinyl chloride resin [A-2 (1)] was changed to 34 parts by mass. A sheet was prepared under the following conditions, and the evaluation was performed. Table 1 shows the results.

Example 5
A sheet was prepared and evaluated under the same conditions as in Example 1, except that the partial ester compound (C-1) of the carboxylic acid condensate was changed to 0.20 part by mass. Table 1 shows the results.

Example 6
A sheet was prepared and evaluated under the same conditions as in Example 1, except that the partial ester compound (C-1) of the carboxylic acid condensate was changed to 0.45 parts by mass. Table 1 shows the results.

Example 7
A sheet was prepared and evaluated under the same conditions as in Example 1, except that the adipic acid plasticizer (B-1) was changed to 38 parts by mass. Table 1 shows the results.

Comparative Example 1
A sheet was prepared under the same conditions as in Example 1 except that only the polyvinyl chloride-based resin [A-1 (1)] was used as the polyvinyl chloride-based resin (A), and the evaluation was performed. went. Table 1 shows the results.

Comparative Example 2
A sheet was prepared and evaluated under the same conditions as in Comparative Example 1 except that the phthalic acid-based plasticizer (B-2) was used as the plasticizer (B), and the content was changed to 35 parts by mass. . Table 1 shows the results.

Comparative Example 3
A sheet was prepared under the same conditions as in Comparative Example 2 except that the partial ester compound (C-1) of the carboxylic acid condensate was not used, and a slip agent ("Nikkarico AS-100S" manufactured by Nikka Corporation) was applied to the surface of the sheet. the ") was uniformly sprayed 150 mg / ^{m 2} at a sieve. Table 1 shows the evaluation results.

Comparative Example 4
A sheet was prepared and evaluated under the same conditions as in Example 1 except that the partial ester compound (C-1) of the carboxylic acid condensate was not used. Table 1 shows the results.

Comparative Example 5
A sheet was prepared and evaluated under the same conditions as in Example 1 except that 0.5 parts by mass of stearic acid was used instead of the partial ester compound (C-1) of the carboxylic acid condensate. Table 1 shows the results.

Comparative Example 6
The non-crosslinked polyvinyl chloride resin [A-1 (1)] was changed to 90 parts by mass, and the crosslinked polyvinyl chloride resin [A-2 (1)] was changed to 10 parts by mass. A sheet was prepared and evaluated under the same conditions as in Example 1 except that the compound (C-1) was not used. Table 1 shows the results.

Table 1 shows that the sheets obtained in Examples 1 to 7 had good slipperiness at the time of cutting, a small value of the coefficient of static friction, and were excellent in total light transmittance. In particular, when an adipic acid-based plasticizer is used as the plasticizer (B), it is shown that the coefficient of static friction is lower and the slip property during cutting is excellent.
On the other hand, the sheets obtained in Comparative Examples 1, 2, 4, 5, and 6 have a large value of the coefficient of static friction, which indicates that the slip properties at the time of cutting are inferior. In Comparative Example 3, the slip property at the time of cutting was good, the value of the coefficient of static friction was small, and the slip property was good. However, since the powder was sprayed on the film surface, the value of the total light transmittance was reduced, and the transparency was poor. It has been shown.

  The sheet or film obtained by using the polyvinyl chloride resin composition of the present invention has excellent slip properties and transparency, and does not cause any trouble in the fusing performance such as secondary processing. It can be suitably used for clear cases and clear sheets.

Claims (5)

20 to 40 parts by mass of a plasticizer (B) and a partial ester compound (C) of a carboxylic acid condensate with respect to 100 parts by mass of a polyvinyl chloride resin (A) having a gel fraction of 6 to 20% by mass . 0.05 to 1.0 parts by mass ,
The partial ester compound (C) of the carboxylic acid condensate is a compound obtained by esterifying a dimer acid or trimer acid having 30 to 60 carbon atoms or an anhydride thereof with a monoalcohol or a monoepoxy compound, ,
A polyvinyl chloride resin composition, wherein the esterification rate of the partial ester compound (C) of the carboxylic acid condensate is 10 to 90%, the acid value is 10 mgKOH / g or more, and the molecular weight is 1,000 to 20,000 . The polyvinyl chloride resin composition according to claim 1 , wherein the plasticizer (B) is an adipic acid plasticizer. The polyvinyl chloride resin (A) comprises a substantially uncrosslinked polyvinyl chloride resin (A-1) and a crosslinked polyvinyl chloride resin (A-2) having a gel fraction of 20 to 50% by mass. , the mixing ratio of both (a-1) :( a- 2) = 50~90: 50~10 ( a mass ratio), according to claim 1 or 2 polyvinyl chloride resin composition according to. Of poly vinyl chloride resin composition according to any one of claims 1 to 3 sheet or film. A multilayer sheet or film having the sheet or film according to claim 4 .