WO2018124746A2

WO2018124746A2 - Polyalkylene carbonate-based resin film

Info

Publication number: WO2018124746A2
Application number: PCT/KR2017/015580
Authority: WO
Inventors: 김현민; 조현주; 김성경; 박승영
Original assignee: 주식회사 엘지화학
Priority date: 2016-12-27
Filing date: 2017-12-27
Publication date: 2018-07-05
Also published as: WO2018124746A3

Abstract

The present invention relates to a polyalkylene carbonate-based resin film and, more particularly, to a polyalkylene carbonate-based resin film comprising a resin in which a polyalkylene carbonate resin and a polyketone resin are blended in specific amounts, thereby making it possible to obtain both excellent tensile strength and excellent tear strength without deteriorating the excellent elongation property of the polyalkylene carbonate resin.

Description

[Name of invention]

Polyalkylene Carbonate Resin Film

Technical Field

Cross Citation with Related Application (s)

This application claims the benefit of priority based on Korean Patent Application No. 10-2016-0180486 dated December 27, 2016 and Korean Patent Application No. 10-2017-0180266 dated December 26, 2017. All content disclosed in the literature is included as part of this specification. The present invention relates to a polyalkylene carbonate-based resin film comprising a polyalkylene carbonate-based resin with complementary physical properties of the polyalkylene carbonate resin.

Background Art

Plastics are used as materials for various articles due to their ease of manufacture and ease of use, and they have been used in various fields such as building materials and automobile interior materials as well as disposable containers such as packaging films, disposable ¾ and disposable plates.

In particular, the polyalkylene carbonate resin (polyalkylene Carbonate) resin has the advantage that can be variously applied to food packaging applications and industrial boro film with high oxygen barrier properties and high elongation properties.

However, polyalkylene carbonate (polyalkylene carbonate) resin has a problem that the tensile strength is relatively low compared to the high elongation characteristics, so that blending a resin having excellent tensile strength (for example, polylatic ac id) to improve the tensile strength Resin is used.

In the case of the blended resin, the tensile strength may be improved by the additional resin, but the elongation properties of the polyalkylene carbonate are lowered and the tear strength (tear strength) is also reduced. In particular, in the case of industrial protective film, the workability is remarkably degraded when the packaging is torn, and the product may be scratched in the transportation when the packaging is torn. There is a need for a film having excellent tear strength.

On the other hand, when two kinds of polymers are used in combination, the compatibility between the two polymers should be good to complement each other's physical properties. Compatibility (compat ibi l ty) means that when two polymers are mixed, the two polymers are uniformly mixed or dispersed. If the compatibility is low, the properties of each polymer are expressed as they are and thus cannot complement each other. Therefore, various studies have been conducted on resins having excellent compatibility with polyalkylene carbonates while exhibiting the aforementioned physical properties. Korean Patent Publication No. 10-2014-0070706 discloses a block in which polyether poly is bonded to both ends of a soft segment of a repeating unit, and a hard segment of a polylactide repeating unit is combined to supplement the properties of polyalkylene carboney B. It includes two or more co-polymerization repeating units, the block copolymerization repeating units are disclosed to use lactide co-polymers are connected to each other via a urethane linking group derived from a polyvalent isocyanate compound. However, the above method requires the production of a copolymer having a novel structure, which may increase the cost compared to using polylactic acid.

Prior Art Documents

[Patent literature]

Korean Patent Publication No. 10 一 2014-0070706

[Detailed Description of the Invention]

[Technical problem]

The present invention relates to a polyalkylene carbonate film comprising a polyalkylene carbonate resin with improved mechanical properties.

Technical Solution

According to an aspect of the present invention to solve the above problems, comprising a blending resin mixed with 75 to 99% by weight polyalkylene carbonate resin and 1 to 25% by weight polyketone resin, measured by ASTM D 638 Polyalkylene, having a tensile strength of 200 kgf / cm 2 to 300 kgf / cm 2 A carbonate resin film is provided.

In the present invention, the blending resin may be mixed with 80 to 90% by weight of polyalkylene carbonate resin and 10 to 20% by weight of polyketone resin.

In addition, the polyalkylene carbonate resin may include a repeating unit represented by the following Chemical Formula 1.

[Formula 1]

In Formula 1, R1 to R4 are each independently hydrogen, a linear or branched alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms. An alkenyl group having 2 to 20 carbon atoms or a cycloalkyl group having 3 to 20 carbon atoms, at least two of R1 to R4 may be connected to each other to form a cycloalkyl group having 3 to 10 carbon atoms, and m may be 10 to 1,000 Is an integer.

Wherein said polyalkylene carbonate is polyethylene carbonate resin resin, _{specifically,.} It may be at least one selected from the group consisting of polypropylene carbonate resin, polypentene carbonate resin, polynuxene carbonate resin, polyoctene carbonate resin, polycyclonuxene carbonate resin, and copolymerized resins thereof.

In addition, the weight average molecular weight of the polyalkylene carbonate resin may be 50, 000g / mol to 500, 000g / mol.

In addition, the polyketone resin may include a repeating unit represented by Formula 2 below:

[Formula 2]

In Chemical Formula 2,

R is linear or branched alkylene having 1 to 10 carbon atoms; Carbon number 30 arylene; Alkyl ethers having 1 to 10 carbon atoms; Aryl ethers having 6 to 30 carbon atoms; Alkyl esters having 1 to 10 carbon atoms; Or an aryl ester having 6 to 30 carbon atoms,

n is an integer from 10 to 1000.

Specifically, the polyketone resin may be an aliphatic polyketone resin including ethylene, propylene, isopropylene, or butylene units.

In addition, the polyketone resin may be a binary copolymer or a ternary co-polymer.

The polyketone resin may have a weight average molecular weight of 10, 000 to l, 000, 000 g / m.

The polyketone resin may have a melt index (Ml) of 3 to 8.

According to one embodiment of the present invention, the tear strength (internal tearing st rength) according to ASTM D 1004-03 of the polyalkylene carbonate-based film may be 50 kg / cm to 80 kg / cm.

According to another embodiment of the present invention, the polyalkylene carbonate-based film

Elongat ions according to ASTM D 638 may be between 300% and 500%.

[Effects of the Invention]

According to the polyalkylene carbonate-based resin film of the present invention, by containing a blend of polyalkylene carbonate resin and polyketone resin in a specific content, the mechanical properties of the polyalkylene carbonate resin without sacrificing excellent elongation characteristics Physical properties can be improved.

In addition, the polyalkylene carbonate resin film of the present invention is excellent in compatibility between the polyalkylene carbonate resin and the polyketone resin without a separate compatibilizer.

[Brief Description of Drawings]

1 shows an SEM photograph of a film specimen according to Example 1.

Figure 2 shows the SEM photograph of the film specimen according to Comparative Example 2. [Form for implementation of invention]

Hereinafter, a polyalkylene carbonate-based resin film according to a specific embodiment of the present invention will be described in more detail. <Polyalkylene carbonate resin film>

Conventional polyalkylene carbonate resin, despite the excellent physical properties, the glass transition temperature () is about 2 (rc lower, less fragile below T _g , it was difficult to manufacture a film due to the soft adhesiveness above Tg. The inventors have found that by including a blend resin in which a polyalkylene carbonate resin and a polyketone resin are mixed at a specific content, the mechanical properties can be significantly improved while maintaining excellent inherent properties of the polyalkylene carbonate. The present invention was completed.

In addition, by using a combination of polyalkylene carbonate resin and polyketone resin in a specific content ratio described above, their tensile strength satisfies a specific range, excellent compatibility without the compatibilizer used in the conventional blending resin, accordingly The problem of deterioration of the physical properties of the film does not occur. Polyalkylene carbonate-based resin film according to an embodiment of the present invention, the blending resin is mixed with 75 to 99% by weight polyalkylene carbonate resin and 1 to 25% by weight polyketone resin, each resin is the content By being included in the range, it is possible to implement excellent levels of elongation characteristics, mechanical properties all. In addition, by satisfying the content ratio range, the compatibility of the polyalkylene carbonate resin and the polyketone resin is very excellent.

Preferably, the blending resin may be included in 80 to 90% by weight of polyalkylene carbonate resin and 10 to 20% by weight of polyketone resin. In the above content range, the aforementioned effects can be further improved.

On the other hand, when the polyalkylene carbonate resin is mixed in a small amount out of the content range of 75 to 99 weight ¾ with respect to the total weight of the blending resin, there may be a problem that deterioration characteristics. In addition, when the polyketone resin is included in an excess of 1 to 25% by weight based on the total weight of the blending resin, A problem may occur in which the tear strength is slightly lowered. Polyalkylene carbonate-based resin film according to an embodiment of the present invention,

Tensile strength measured by ASTM D 638 is 200 kgf / cm 2 to 300 kgf / cm 2, preferably 230 kgf / cm 2 to 290 kgf / cm 2. By satisfying the above range, the processability of the film is excellent, there is a strong advantage against scratches and external impact even after application to the product. Therefore, it is applied to an industrial packaging film within the tensile strength range shows excellent physical properties.

When the tensile strength range is less than 200 kgf / cm2, it is difficult to handle such as breaking or cracking in the film processing process, and when the tensile strength exceeds 300 kgf / cm2, the film is somewhat difficult to be applied to various products. . Polyalkylene carbonate-based resin film according to an embodiment of the present invention, the tear strength (Internal tearing strength) according to ASTM D 1004-03 may be 50 kg / cm to 80 kg / cm, preferably 60 kg / cm to 70 kg / cm. When the above range is satisfied, the film is not easily torn even when applied to the product after the film processing process and film completion. ^{"Polyalkylene} carbonate-based resin film according to one embodiment of the present invention, ASTM D 638 Elongation at break (Elongat ino) by the measurements in accordance with may be a 300% to 500%, preferably 350% to 450% one Can be. When satisfying the above range, the processability of the film is excellent, it can be applied to a variety of products.

Polyalkylene carbonate-based resin film according to an embodiment of the present invention, a polyalkylene carbonate resin and a polykeron resin is mixed with a blending resin.

Polyalkylene carbonate resin

The polyalkylene carbonate resin is an amorphous polymer and, unlike the aromatic polycarbonate resin, which is a synthetic resin of a similar series, biodegradation is Not only is it possible to pyrolyze at low temperatures, it is also completely decomposed into carbon dioxide and water and free of carbon residues. In addition, it exhibits excellent elongation characteristics, there is an advantage that it is easy to apply to industrial packaging materials.

The polyalkylene carbonate resin may be one containing a repeating unit of the following [Formula 1].

[Formula 1]

In Chemical Formula l,

R1 to R4 are each independently hydrogen, a linear or branched alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms or a cycloalkyl group having 3 to 20 carbon atoms; At least two of R 1 to R 4 increase may be linked to each other to form a cycloalkyl group having 3 to 10 carbon atoms;

m is an integer of 10-1, 000.

In the polyalkylene carbonaneat resin, the polymerization degree m of the repeating unit represented by Chemical Formula 1 may be about 10 to about 1,000, preferably about 50 to about 500. The weight average molecular weight of the polyalkylene carbonate including the repeating unit may be 50, 000 to 500, 000, and preferably 10,000 to 100, 000. When the said range is satisfied, since it can mix with a polyketone resin and exhibit excellent compatibility, it is preferable. The polyalkylene carbonate resin may be a homopolymer including a repeating unit represented by Formula 1; Or comprising two or more repeating units falling within the scope of Formula 1 above _. It may be a copolymer or a copolymer including an alkylene oxide-based repeating unit and the like together with the repeating unit represented by the formula (1).

However, peculiar physical properties (eg, biodegradability, elongation, flexibility, or low glass transition temperature) due to the repeating unit represented by Chemical Formula 1 may be maintained. Preferably, the polyalkylene carbonate resin is air containing at least about 40% by weight, preferably at least about 60% by weight, more preferably at least about 80% by weight, of at least one of the repeating units represented by Formula 1 above. Can be coalesced. The method for producing the polyalkylene carbonate is not particularly limited, but may be obtained by, for example, copolymerizing an epoxide compound with carbon dioxide. Or by ring-opening polymerization of cyclic carbonates. Copolymerization of the alkylene oxide and carbon dioxide may be carried out in the presence of a metal complex such as zinc, aluminum, cobalt.

When the polyalkylene carbonate is prepared by co-polymerization using an epoxide compound and carbon dioxide in the presence of an organometallic catalyst, the epoxide compound is ethylene oxide, propylene oxide, 1—butene oxide, 2-butene oxide, Isobutyrene oxide, 1-pentene oxide, 2-pentene oxide, 1-nuxene oxide, 1-octene oxide, cyclopentene oxide, cyclonuxene oxide, styrene oxide or butadiene monooxide, etc. It is may be a side-based compound, not limited to this ^de-. ^The polyalkylene carbonate resin may be, for example, polyethylene carbonate resin, polypropylene carbonate resin, polypentene carbonate resin, polynuxene carbonate resin, polyoctene carbonate resin, polycyclonuxene carbonate resin, or a copolymer resin thereof. But it is not limited thereto. Polyketone resin

The polyketone resin has excellent mechanical properties, low water absorption and low dimensional change and physical property change due to moisture absorption. The polyketone resin is mixed with the above-described polyalkylene carbonate resin in a specific content range to provide excellent elongation and tear strength properties. Can be implemented.

The polyketone resin is to include a repeating unit of the following [Formula 2] Can be.

[Formula 2]

In Chemical Formula 2,

R is linear or branched alkylene having 1 to 10 carbon atoms; Arylene having 6 to 30 carbon atoms; Alkyl ethers having 1 to 10 carbon atoms; Aryl ethers having 6 to 30 carbon atoms; Alkyl esters having 1 to 10 carbon atoms; Or an aryl ester having 1 to 10 carbon atoms,

n is an integer from 10 to 1000. The method for producing the polyketone resin is not particularly limited, but is, for example, prepared by the reaction of a compound containing carbon monoxide and an unsaturated double bond, and recently, composed of carbon monoxide and at least one ethylenically unsaturated hydrocarbon. The repeating units may be prepared in the form of alternating copolymers or the like followed by alternation. The melt index (Ml) of the polyketone resin is 3 to 8; Preferably from 5 to 7. When the said range is satisfied, it is excellent in compatibility with polyalkylene carbonate, and can improve the process processability of the film preferably. The polyketone resin may be preferably an aliphatic polyketone containing ethylene, propylene, isopropylene, or butylene units, and may be in the form of a binary copolymer or a terpolymer containing one or more such repeating units. It may be more desirable to use. The polyketone resin may have a weight average molecular weight of about 10, 000 to about l, 000, 000 g / mol, and preferably, about 50,000 to about 500, 000 g / ri) l. When the weight average molecular weight is satisfied, the film It is preferable at the point of workability at the time of manufacture, the improvement of the mechanical properties of a film, etc. Moreover, when satisfy | filling the said range, it is preferable because it can mix with polyalkylene carbonate resin and can show the outstanding compatibility. In addition, according to another embodiment of the present invention, the polyalkylene carbonate resin film may further include about 1 to about 30 parts by weight of the polylactide resin based on 100 parts by weight of the polyalkylene carbonate resin. When the polylactide resin is mixed and used, the thermal stability of the polyalkylene carbonate resin can be improved, and thus, the stir with the polyketone resin can be more stably performed. When the polylactide resin contains too less than the above range, when the polyketone and the polyalkylene carbonate are stirred at a high temperature, the decomposition of the polyalkylene carbonate may occur and when the polylactide is included more than the above range, The problem of losing the inherent physical properties of polyalkylene carbonate can occur.

The polyalkylene carbonate resin film of the present invention includes a polyalkylene carbonate resin, a polyketone resin, and a polylactide resin in a specific ratio, and has excellent mechanical properties while being less blocking in processing. The stability is also excellent, and thus can be preferably used for semi-permanent use of sheets, food packaging films, flooring, electronics packaging or automotive interior materials.

Lactide may be generally divided into L-lactide composed of L-lactic acid, D-lactide composed of D-lactic acid, and meso-lactide composed of one L-form and one D-form. In addition, the mixture of L-lactide and D-lactide by 50:50 is called D, L-lactide or rac-lactide. Among these lactides, polymerization using only L-lactide or D-lactide, which has high optical purity, is known to yield L—black silver D—polylactide (PLLA or PDLA) having very high stereoregularity. Polylactide is known to have higher crystallization rate and higher crystallization rate than polylactide having low optical purity. However, in the present specification, "lactide monomer" refers to all forms of lactide regardless of the difference in the properties of the lactide and the difference in the properties of the polylactide formed therefrom. It is defined as containing lactide.

The molecular structure of the polylactide may be one obtained by adding L-lactic acid, D-lactic acid or L, D-lactic acid. The polylactide may be prepared by forming the following repeating unit by ring-opening polymerization of the lactide monomer, and the polymer after the process of forming the ring-opening polymerization and the repeating unit is completed may be referred to as the polylactide. . In this case, the lactide monomer may include all types of lactide as described above.

According to one embodiment of the present invention, the polylactide may have a degree of polymerization of about 50 to 500, and may have a weight average molecular weight of about 100, 000 to about 1,000, 000. As the polylactide has the degree of polymerization and weight average molecular weight, from which the polyalkylene carbonate resin composition can maintain the inherent physical properties of the polyalkylene carbonate; Very good thermal stability can be obtained even at high temperatures.

The category of the polymer which may be referred to as “polylactide” includes polymers in all states after the ring-opening polymerization and the formation of the repeating unit are completed, for example, in the crude or purified state after the ring-opening polymerization is completed. The polymer, the polymer included in the liquid or solid resin composition before the molding of the product, or the polymer contained in the plastic or woven fabric, such as product molding is all may be included. As a method for producing polylactide, a method of directly polycondensing lactic acid or ring-opening polymerization of the lactide monomer under an organometallic catalyst is known. In the ring-opening polymerization method of lactide monomers, the lactide monomer must be prepared first from lactic acid, so that the manufacturing process is more complicated and higher cost than polycondensation polymerization. Can be obtained relatively easily and control of the polymerization rate is advantageously applied commercially. The polyalkylene carbonate-based resin film according to the present invention includes a blending resin having the above-described composition, and the blending method of the blending resin may be used without particular limitation as a method commonly used in the art. Specifically, by a Hansel mixer, a ribbon mixer (r ibbon blender), a blender (blender), etc. To obtain a homogeneous compound by common heunhap eu and also, heunryeon melting method, or the like can be used van ^Barry mixer (VAN Antonie Loui s Barye mixer), 1-axis or 2-axis compressor. Method for producing a polyalkylene carbonate-based resin film according to the present invention, a method commonly used in the art can be used without particular limitation. Specifically, the blended resin is injection molded, compression molded, injection compression molded, gas injection molded, foam injection molded, inflat ion, T die, calender, blow It can be produced in the shape of a film by blow molding, vacuum molding, pressure forming, or the like, and preferably can be produced in a film according to the T die method (T di e).

The thickness of the polyalkylene carbonate-based resin film according to the present invention is not particularly limited, and may be appropriately selected in a range for maintaining the elongation properties and mechanical properties described above in the required field. Preferably, it may have a thickness of 0.1 to 1,000, or a thickness of 1 to 100, more preferably a thickness of mi to 50. The polyalkylene carbonate-based resin film according to the present invention, by including the blending resin of the above-described components, and having a specific physical property value, can realize excellent mechanical properties without deterioration of the elongation properties, thereby producing a film It has excellent processability and does not generate scratches, breaks, or cracks after application of the product, and thus can be usefully applied to industrial packaging materials. Hereinafter, the operation and effects of the invention will be described in more detail with reference to specific examples. However, this is presented as an example of the invention, whereby the scope of the invention is not limited in any sense. Preparation Example 1 Preparation of Polyalkylene Carbonate Resin (Al, PEC)

Polyethylene carbonate resin was prepared by co-polymerizing ethylene oxide and carbon dioxide using a diethyl-zinc catalyst (Journal of Polymer Science B 1969, 7, 287; Journal of Control led release 1997, 49, 263).

Put dry diethyl-zinc catalyst (lg) and 10 mL of dioxane solvent into an autoclave reactor equipped with a stirrer and dilute purified water O in 5 mL dioxane solvent with slow stirring. I put in lg. After layering about 10 atm of carbon dioxide, the mixture was stirred at 120 ^° C for 1 hour. Thereafter, purified ethylene oxide (10 g) was added, and carbon dioxide was charged to about 50 atm again, and then the temperature was adjusted to 60 ^° C. for 48 hours. After the reaction, unbanung ethylene oxide was removed under low pressure and dissolved in dichloromethane solvent. Washed with aqueous hydrochloric acid solution (0.1M) and methane was precipitated in a solvent to obtain a polyethylene carbonate resin. The recovered resin was about 15g, the production was confirmed by nuclear magnetic resonance spectrum, and the weight average molecular weight analyzed by GPC was confirmed to be 160, 000g / m.

To the polyethylene carbonate prepared above, polylactide (NatureWorks PLA 3001D) was mixed to prepare a pellet so that the content of polylactide was 5%. Preparation Example 2 Preparation of Polyketone Resin (Bl, PK)

Polyketone (Hyosung, M620A) pellets were used, and the Ml of the ketone resin was 6. Due Diligence Example 1

The polyketone resin Hyosung M620A 20% was uniformly mixed with 80% of the prepared polyethylene carbonate resin (containing 5 wt% of NatureWorks PLA 300 ID), and dried in a vacuum oven at 40 ^° C. for 12 hours, and a T-die film was used on a twin screw extruder. Attached to the manufacturing apparatus was extruded ^at about 165 ~ 185 ^° C to prepare a 20- 圖 T-die film. Example 2, Comparative Examples 1 to 3

A T-die film was prepared in the same manner as in Example 1, except that the ingredients and contents shown in Table 1 were used. C1 used in Comparative Example 2 used Natureworks 4032D as PLA resin. Table 1

Experiment method

Experimental Example 1

For films made according to Examples and Comparative Examples, UTM Jniversal

Tear strength, tensile strength and elongation were measured by the following method using a Testing Machine, Instron, and the results are shown in Table 2.

1) The tear strength (kg / cm) was measured according to ASTM D1004-03, and the average value of five tests in total was measured as a result value.

2) Tensile strength (TS max, kgf / crf) was measured according to ASTM D638 in the form of dumbbell type specimens, and measured the tensile strength at a rate of 50 mm / min, a total of five tests The mean value was measured as the result value.

3) The elongation (elongat ion, ¾>) measured the elongation until the specimen was cut under the same conditions as the tensile strength measurement, and measured the average value of the five tests in total as a result value.

Experimental Example 2

In the manufacturing process of Example 1 and Comparative Example 2, a strand was manufactured using a die in a twin screw extruder, and the SEM shape of the prepared strand was taken to check the domain shape of the blending resin, and the results were shown in FIGS. 1 and 2. Indicated.

Table 2

Example 1 277 417 63 Example 2 220 502 54

Comparative Example 1 88 806 25

Comparative Example 2 167 283 45

Comparative Example 3 Inability to manufacture film Inability to manufacture film In reference to Table 2, in the case of Example 1 using a mixture of PEC and PK in the content range of the present invention, the mechanical properties (tensile strength and tearing) Strength). In particular, it was confirmed that the excellent tensile strength and tear strength within 300% to 500% range of the proper elongation required for industrial packaging film.

In Comparative Example 1 using only PEC alone, the elongation characteristics were very good at 806%, but the tensile and tear strengths were significantly lower than those in Examples, and in the case of Comparative Example 2 using PEC and PLA resins, the elongation characteristics were excellent. This markedly decreased, and it was confirmed that both Comparative Examples 1 and 2 were not suitable as industrial packaging materials. In the case of Comparative Example 2, as a conventional technique combined with PLA to supplement the properties of the PEC, referring to the image of Figure 2, it was confirmed that the compatibility is reduced and there is a clear interface. When the compatibility is lowered, when applied to the product, the physical properties of each of the blending resin is expressed as it is, there is a problem that can not sufficiently complement the physical properties of each other.

However, referring to the SEM image of FIG. 1, in Example 1, the compatibility between the PEC and the PK was excellent and the interface was unclear. Accordingly, it was confirmed that the effect of supplementing physical properties between the two resins was excellent.

In case of comparison 3, PK Pe ll et does not melt in the extruder temperature range (approximately 165 ~ 185 ^° C) for PEC film production due to the high Tm of PK (Tm = 200 ^° C) as the content of PK increases. Normal production of film was impossible. In addition, when the extruder temperature is increased to melt the PK, the PEC resin is pyrolyzed to produce a phenomenon in which the film itself cannot be manufactured.

Claims

[Range of request]

[Claim 1]

Blending resin mixed with 75 to 99% by weight polyalkylene carbonate resin and 1 to 25% by weight polyketone resin,

A polyalkylene carbonate resin film having a tensile strength of 200 kgf / cm ² to 300 kgf / cm ² according to ASTM D 638.

[Claim 2]

The method of claim 1,

The blending resin is 80 to 90% by weight of polyalkylene carbonate resin and 10 to 20% by weight of polyketone resin, polyalkylene carbonate-based resin film.

[Claim 3]

The method of claim 1,

The polyalkylene carbonate resin is a polyalkylene carbonate-based resin film comprising a repeating unit represented by the following formula (1):

r Formula 1]

In Formula 1, R ¹ to R ⁴ are each independently hydrogen, a linear or branched alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms or a cycloalkyl having 3 to 20 carbon atoms. It is an alkyl group, at least any two of R ¹ to R ⁴ may be connected to each other to form a cycloalkyl group having 3 to 10 carbon atoms, _m is an integer of 10 to 1,000.

[Claim 4]

The method of claim 1, The polyalkylene carbonate resin is at least one selected from the group consisting of polyethylene carbonate resin, polypropylene carbonate resin, polypentene carbonate resin, polynuxene carbonate resin, polyoctene carbonate resin, polycyclonuxene carbonate resin, and copolymerized resins thereof, Polyalkylene carbonate resin film.

[Claim 5]

The method of claim 1,

The weight average molecular weight of the polyalkylene carbonate resin is 50, 000 g / mol to 500, 000 g / m, polyalkylene carbonate-based resin film.

[Claim 6]

The method of claim 1,

The polyketone resin is a polyalkylene carbonate-based resin film comprising a repeating unit represented by the following formula (2).

[Formula 2]

In Chemical Formula 2,

R is linear or branched alkylene having 1 to 10 carbon atoms; Arylene having 6 to 30 carbon atoms; Alkyl ethers having 1 to 10 carbon atoms; Aryl ethers having 6 to 30 carbon atoms; Alkyl esters having 1 to 10 carbon atoms; Or an aryl ester having 6 to 30 carbon atoms

n is an integer from 10 to 1000.

[Claim 7]

The method of claim 1,

Wherein said polyketone resin is an aliphatic polyketone resin comprising ethylene, propylene, isopropylene, or butylene units.

[Claim 8]

The method of claim 1,

The polyketone resin is a binary copolymer or ternary copolymer, polyalkylene carbonate resin film.

[Claim 9]

The method of claim 1,

The polyketone resin is a polyalkylene carbonate resin film having a weight average molecular weight of 10,000 to l, 000,000 g / m.

[Claim 10]

The method of claim 1,

The polyketone resin has a melt index (Ml) of 3 to 8, polyalkylene carbonate resin film.

[Claim 11]

The method of claim 1,

The polyalkylene carbonate resin film according to ASTM D 1004-03 of the polyalkylene carbonate film (Internal tearing strength) is 50 kg / cm to 80 kg / cm.

[Claim 12]

According to claim 1,

Elongation according to ASTM D 638 of the polyalkylene carbonate-based film is 300% to 500%, polyalkylene carbonate-based resin film.