WO2018124743A2

WO2018124743A2 - Polyalkylene carbonate resin composition and polyalkylene carbonate resin molded article

Info

Publication number: WO2018124743A2
Application number: PCT/KR2017/015577
Authority: WO
Inventors: 박승영; 김성경
Original assignee: 주식회사 엘지화학
Priority date: 2016-12-27
Filing date: 2017-12-27
Publication date: 2018-07-05
Also published as: WO2018124743A3

Abstract

The present invention relates to a polyalkylene carbonate resin composition and, more specifically, to a polyalkylene carbonate resin composition containing a polyalkylene carbonate and a polyketone, having excellent transparency, flexibility, and mechanical and chemical properties, and exhibiting, especially, excellent thermal stability.

Description

[Name of invention]

Polyalkylene Carbonate Resin Composition and Polyalkylene Carbonate Resin Molded Article

Cross Citation with Related Application (s)

This application claims the benefit of priority based on Korean Patent Application No. 10-2016-0180049 dated December 27, 2016 and Korean Patent Application No. 10-2017-0180257 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 resin composition, and more specifically, to polyalkylene carbonate and polyketone, having excellent transparency and flexibility, oxygen barrier properties, mechanical and chemical properties, in particular excellent thermal stability It relates to a polyalkylene carbonate resin composition.

Background Art

Polyalkylene carbonate is an amorphous transparent resin and has characteristics such as excellent transparency, excellent flexibility and high oxygen barrier property. In addition, unlike the aromatic polycarbonate, which is a similar series of engineering plastics, it has biodegradability and has no carbon residue since it is completely decomposed into carbon dioxide and water during combustion.

However, when polyalkylene carbonate is processed into pellets, films, or sheets, blocking occurs between resins or products due to self-adhesiveness, so handling is not easy, and thermal stability is low, and processing conditions are very difficult. have.

Accordingly, attempts have been made to mix and use other types of resins, such as polylactide, which can improve the physical properties of polyalkylene carbonates. By the way, the resin composition containing the polyalkylene carbonate and polylactide known in the prior art exhibits a large degree of physical offset such that the inherent physical properties of the polyalkylene carbonate rapidly decrease as the content of the polylactide increases. The effects of improving physical properties such as thermal stability at Eq.

Detailed Description of the Invention

[Technical problem]

The present invention is to provide a resin composition capable of maintaining the inherent physical properties of polyalkylene carbonate and having excellent thermal stability and applicable to various fields.

Technical Solution

The present invention provides a polyalkylene carbonaneart resin composition containing 1 to 100 parts by weight of polyketone, based on 100 parts by weight of polyalkylene carbonate. The polyalkylene carbonate may include a repeating unit represented by the following formula (1).

[Formula 1]

In Chemical 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 1 to 20 carbon atoms, or a cycloalkyl group having 3 to 20 carbon atoms; Any two of R ¹ to R ⁴ 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.

Such polyalkylene carbonate is specifically, for example, polyethylene carbonate, polypropylene carbonate, polypentene carbonate, polynuxene It may be one or more selected from the group consisting of carbonates, polyoctene carbonates, polycyclonucleene carbonates and copolymers thereof.

In addition, the polyalkylene carbonate may have a weight average molecular weight of about 10, 000 to about l, 000, 00 () _g / mol,

The polyketone 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; Arylene having 1 to 10 carbon atoms; Alkyl ethers having 1 to 10 carbon atoms; Aryl ethers having 1 to 10 carbon atoms; Alkyl esters having 1 to 10 carbon atoms; Or an aryl ester having 1 to 10 carbon atoms and n is an integer of 10 to 1000.

More specifically, the polyketone may be an aliphatic polyketone including ethylene, propylene, isopropylene, or butylene units.

The polyketone may be more preferably a binary copolymer or a ternary copolymer including two or more repeating units described above.

According to one embodiment of the invention, it is preferable that the polyketone has a weight average molecular weight of about 10, 000 to about l, 000, 000 g / n) l.

In addition, according to another embodiment of the present invention, the polyalkylene carbonate resin composition may further include about 1 to about 30 parts by weight of polylactide based on 100 parts by weight of the polyalkylene carbonate.

Due to this composition, the polyalkylene carbonate resin composition of the present invention may have a mass loss rate due to thermal decomposition at about 25 CTC when the mass loss rate according to the temperature change is about 1 (»or less).

Moreover, this invention provides the polyalkylene carbonate resin molded article manufactured with the polyalkylene carbonate resin composition mentioned above. 【Effects of the Invention】

The polyalkylene carbonate resin composition according to the present invention has excellent thermal stability while maintaining the inherent physical properties of the polyalkylene carbonate, and is excellent in workability at high temperatures, and can be used in various fields.

[Brief Description of Drawings]

1 is illustrating a TGA analysis of the resin composition according to the ^embodiment, and comparative examples of the present invention graph.

[Form for implementation of invention]

The polyalkylene carbonate resin composition of this invention contains 1-100 weight part of polyketones with respect to 100 weight part of polyalkylene carbonates.

And the polyalkylene carbonate resin molded article of this invention is manufactured with the polyalkylene carbonate resin composition mentioned above. In this specification, terms such as first and second are used to describe various components, and the terms are used only to distinguish one component from another component.

In addition, the terminology used herein is for the purpose of describing example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise", "comprise" or "have" are intended to indicate that there is a feature, number, step, component, or combination thereof, and one or more other features, It is to be understood that the present invention does not exclude the possibility of adding or presenting numbers, steps, components, or a combination thereof.

The present invention is intended to illustrate specific embodiments that can be modified in various ways and to have a variety of forms and will be described in detail below. But, It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and it is to be understood that the invention includes all modifications, equivalents, and substitutes included in the spirit and scope of the invention. Hereinafter, the polyalkylene carbonate resin composition and polyalkylene carbonate resin molded article of this invention are demonstrated in detail. Polyalkylene carbonate resin composition according to an aspect of the present invention, 1 to 100 parts by weight of polyketone, based on 100 parts by weight of polyalkylene carbonate.

The polyalkylene carbonate may include a repeating unit represented by Formula 1 below.

One]

In Chemical Formula 1,

m is an integer of 10-1, 000.

Specifically, the polyalkylene carbonate is, for example, one or more selected from the group consisting of polyethylene carbonate, polypropylene carbonate, polypentene carbonate, polynuxene carbonate, polyoctene carbonate ᅳ polycyclonuxene carbonate, and copolymers thereof Can be.

The polyalkylene carbonate may have a weight average molecular weight of about 10,000 to about l, 000, 000 g / mol, preferably about 50, 000 to about 500, 000 g / mo 1. Polyalkylene carbonate is an amorphous polymer containing a repeating unit represented by the formula (1).

In addition, the polyalkylene carbonate can be controlled within this range while having a relatively low glass transition temperature c of about 40 ^° C., for example, about 10 to about 4 (rc about).

Although the manufacturing method of the polyalkylene carbonate used for this invention is not specifically limited, For example, it can obtain by copolymerizing an epoxide type compound and carbon dioxide. Or by ring-opening polymerization of cyclic carbonates. Copolymerization of the alkylene oxide and carbon dioxide can be carried out in the presence of a metal complex such as zinc or aluminum cobalt.

When the polyalkylene carbonate is prepared by copolymerization 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, isobuty. Ethylene oxide, 1-pentene oxide, 2-pentene oxide, 1-nuxene oxide, 1-octene oxide, cyclopentene oxide, cyclonuxene oxide, styrene oxide or butadiene monooxide, etc. It may be a compound, but is not limited thereto.

Such polyalkylene carbonate may be a homopolymer including a repeating unit represented by Formula 1; Or a copolymer including two or more repeating units belonging to the above Formula—1, or a copolymer including an alkylene oxide-based repeating unit together with the repeating unit represented by Formula 1.

However, the polyalkylene carbonate is represented by Chemical Formula 1 so that specific physical properties (eg elongation, flexibility, biodegradability or low glass transition temperature, etc.) due to the repeating unit represented by Chemical Formula 1 can be maintained. It may be a copolymer comprising 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 repeating unit.

According to one embodiment of the invention, the polyalkylene carbonate is, for example, polyethylene carbonate, polypropylene carbonate, polypentene carbonate, It may be polynucleene carbonate, polyoctene carbonate, polycyclonucenne carbonate, or a copolymer thereof, but is not limited thereto, and R1 to R4 may be used in consideration of physical properties of the resin to be finally obtained and a blend with polyketone. May be selected as appropriate functional groups.

For example, when the functional group is hydrogen or a functional group having a relatively small carbon number, it may be more advantageous in terms of flexibility and compatibility with polyketone. When the functional group has a relatively large carbon number, the mechanical properties such as the strength of the resin may be used. It may be advantageous from the side.

In addition, in the polyalkylene carbonate, the polymerization degree m of the repeating unit represented by Formula 1 may be about 10 to 1,000.

As described above, polyalkylene carbonate is biodegradable with excellent transparency, flexibility, oxygen barrier properties, and mechanical properties, but due to low thermal stability, it easily decomposes when processed into pellets or films, and The disadvantage is that the temperature range is very narrow.

The inventors of the present invention have confirmed that the thermal stability of the polyalkylene carbonate resin can be significantly improved by using polyketone mixed with the polyalkylene carbonate, thereby completing the present invention.

The low thermal stability of polyalkylene carbonates is basically that when the hydrogen bonded to the hydroxy group at the end of the resin is released under high temperature conditions, the end of the resin becomes an anion, which attacks the carbonate group in the polymer chain close to the alkyl, This is due to the continuous reaction of the backbi ting, which shortens the length of the polymer chain while making a single molecule such as ethylene carbonate.

Therefore, in order to suppress this and to improve thermal stability, a material having excellent compatibility with polyalkylene carbonate and capable of effectively suppressing the backbiting reaction is required.

In this case, in particular, polymer resins are more advantageous than monomolecular substances having low melting points, because they can be put into the processing equipment in the form of pellets during processing, and do not require additional mixing equipment. This is because machining increases. In addition, in the case of monomolecular substances, after a certain time after processing The problem of migration to the surface of the product (migrat ion) may occur, which is advantageous in the case of a polymer resin because such a phenomenon rarely occurs.

In the case of polyketone, its molecular structure is similar to that of polyalkylene carbonate, so that the compatibility between resins is very high. If there is a polyketone chain around the polyalkylene carbonate polymer chain, the negative oxygen at the end of the polyalkylene carbonate Since attacking hydrogen in the polyketone chain rather than the central carbon of the polyalkylene carbonate, it is possible to effectively suppress the above-mentioned back-biting reaction, and ultimately improve the thermal stability of the polyalkylene carbonate.

The polyketone 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; C1-C10, arylene; Alkyl ether of 1 to 10 carbon atoms; Aryl ethers having 1 to 10 carbon atoms; Alkyl esters having 1 to 10 carbon atoms; Or an aryl ester having 1 to 10 carbon atoms, and n is an integer of 10 to 1000.

The polyketone polymer having the above structure is prepared by reaction of a compound including carbon monoxide and an unsaturated double bond, and recently, an alternating copolymer in which repeating units composed of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are alternately connected. Interest in the back is rising.

The polyketone resin, according to the above-described principle, can effectively prevent the phenomenon of polyalkylene carbonate decomposed by heat at a high temperature during processing of the polyalkylene carbonate resin composition, and can be processed at a high temperature. Workability can be exhibited.

Specifically, the polyalkylene carbonate resin composition according to an embodiment of the present invention, for the above-described effect, based on 100 parts by weight of polyalkylene carbonate, Polyalkylene carbonate 100 may include at least 1 part by weight, more preferably about 5 parts by weight or about 10 parts by weight of polyketone, and does not impair the chemical and physical properties inherent to the polyalkylene carbonate resin. It may comprise up to 60 parts by weight, more preferably about 50 parts by weight, or up to about 30 parts by weight of polyketone, relative to parts by weight.

When the polyketone is used in an amount less than the above range, the above-described effects of the present invention, which can increase the high temperature stability of the polyalkylene carbonate, may occur. The inherent physical and chemical properties of alkylene carbonate may be difficult to express.

According to one embodiment of the invention, the polyketone is preferably an aliphatic polyketone containing ethylene, propylene, isopropylene, or butylene units.

And, according to one embodiment of the invention, the polyketone, it may be preferable that the binary copolymer or ternary copolymer, specifically, for example, ethylene repeating unit, propylene repeating unit, isopropylene repeating unit, butyl Aliphatic polyketone forms of binary copolymers or ternary copolymers containing any one or more of lene repeat units can be used.

The polyketone may have a weight average molecular weight of about 10, 000 to about l, 000, 000 _g / mol.

In addition, according to another embodiment of the present invention, the polyalkylene carbonate resin composition may further include about 1 to about 30 parts by weight of polylactide based on 100 parts by weight of the polyalkylene carbonate. When the polylactide is used in combination, the thermal stability of the polyalkylene carbonate can be primarily improved, whereby the kneading with the polyketone at a higher temperature can be more stably performed. When the polylactide contains too less than the above range, when the polyketone and the polyalkylene carbonate are stirred in the silver, the decomposition of the polmoalkylene 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. Lactide can be generally classified 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, a mixture of L-lactide and D-lactide by 50:50 is referred to as D, L-lactide or racdecactide. Among these lactides, polymerization using only L-lactide or D-lactide with high optical purity is known to yield L- or D-polylactide (PLLA or PDLA) having very high stereoregularity. Lactide is known to have higher crystallization rate and higher crystallization rate than polylactide having low optical purity. However, the term "lactide monomer" herein is defined to include all types of lactide regardless of the difference in the properties of lactide according to each form and the difference in the properties of the polylactide formed therefrom.

The molecular structure of the polylactide may be polymerized from 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 an 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 polymerization degree and the weight average molecular weight, from this, the polyalkylene carbonate resin composition can maintain the inherent physical properties of the polyalkylene carbonate and obtain a very excellent thermal stability effect even when processing at high temperatures. Can be.

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, crude or purified after the ring-opening polymerization is completed. A polymer in a state, a polymer included in a liquid or solid resin composition before molding a product, or a polymer included in a plastic or a fabric finished molding a product, etc. may be all included. Or ring-opening polymerization of the lactide monomer under an organometallic catalyst. Polymer izat ion) is known. In the ring-opening polymerization method of lactide monomers, the lactide monomer must be prepared first from lactic acid, which makes the manufacturing process more complicated and requires higher cost than polycondensation polymerization. However, the resin has a relatively large molecular weight through lactide ring-opening polymerization using an organometallic catalyst. Can be obtained relatively easily and control of the polymerization rate is advantageously applied commercially.

The resin composition of the present invention contains polyalkylene carbonate, polyketone, and polylactide in a specific ratio, and has excellent transparency, flexibility, oxygen barrier properties, mechanical properties, and biodegradability, and also between resins or products during processing. It has low inter-blocking phenomenon and excellent thermal stability. Therefore, it can be used not only for disposable products such as shopping bags and packaging films, but also for semi-permanent use of barrier multi-layer films, multilayer sheets, flooring materials, electronics packaging or automotive interior materials. .

Due to this composition, the polyalkylene carbonate resin composition of the present invention may have a mass loss rate of about 10% or less due to thermal decomposition at about 25C C when the mass loss rate according to temperature change is measured.

More specifically, the polyalkylene carbonate resin composition, the mass loss rate due to pyrolysis at about 250 ^° C when the mass loss rate according to the temperature change using a TGA analysis equipment is about 10% or less, preferably about 1 To 5%, more preferably no pyrolysis occurs at this temperature, and may have very low values with a mass loss of 0.5% or less. In addition, even at a temperature of about 30CTC, the mass loss rate due to pyrolysis is about 20% or less, preferably about 1 to 1, and may have very good thermal stability, and therefore, workability at high temperature may also be very good. Various additives can be added to the polyalkylene carbonate resin composition of this invention according to a use. Examples include, but are not limited to, additives for modifying, coloring agents (pigments, dyes, etc.), layering agents (carbon tablets, titanium oxide, talc, calcium carbonate, clay, and the like). Modified additives include dispersants. Lubricants, plasticizers, flame retardants, antioxidants, antistatic agents, light stabilizers, ultraviolet absorbers, crystallization accelerators and the like. Various additives are used to pellet pellets from the polyalkylene carbonate resin composition. It may be added at the time of manufacture or when molding a pellet and manufacturing a molded object.

As the manufacturing method of the polyalkylene carbonate resin composition of this invention, various well-known methods can be used. As a method of obtaining a homogeneous mixture, for example, the above-described polyalkylene carbonate, polyketone, polylactide and the like are added at a constant ratio, and a Hansel mixer, a ribbon blender, a blender, or the like. The mixing method is mentioned.

As the melt kneading method, a VAN Antonie Louis Barye mixer, a single or two-axis compressor, or the like can be used. The shape of the resin composition of the present invention is not particularly limited, and for example, a fluid, a strand, a sheet, a film, or a pellet in which the mixture is melted It may be processed in such a way.

According to another aspect of the present invention, there is provided a polyalkylene carbonate resin molded article produced using the above-described polyalkylene carbonate resin composition.

Such molded articles may include, for example, films, film laminates, sheet filaments, nonwoven fabrics, injection molded articles, and the like.

The method for obtaining a molded article by molding the polyalkylene carbonate resin composition of the present invention is, for example, injection molding method, compression molding method, injection compression molding method, gas injection injection molding method, foam injection molding method, inflation method (inflation), T die method ( T die), calender (Calendar), blow molding (blow), vacuum molding, pressure forming, and the like, in addition to the processing method generally used in the technical field of the present invention can be used without particular limitation. Hereinafter, the operation and effects of the invention will be described in more detail with reference to specific embodiments of the invention. However, these embodiments are only presented as an example of the invention, whereby the scope of the invention is not determined.

Polyethylene carbonate resin manufacturing

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

Into an autoclave reactor equipped with a stirrer, dry diethyl-zinc catalyst (lg) and 10 mL of dioxane solvent were added and purified water diluted with 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 further layered at about 50 atmospheres, and then the temperature was adjusted to 60 ^° C. for 48 hours. After the reaction, unreacted ethylene oxide was removed under low pressure and dissolved in dichloromethane solvent. Washed with aqueous hydrochloric acid solution (0.1M) and precipitated in methanol solvent to obtain 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 about 174, 000g / mol. Manufacture of Polylactide Blended Pellets

To the polyethylene carbonate prepared above, polylactide (NatureWorks PLA 3001D) was mixed and pellets were prepared so that the content of polylactide was 5%. Example 1

450 g polyethylene carbonate (weight average molecular weight 174, 000 g / mol,

NatureWorks PLA 3001D 5wt%) pellets and 50 g polyketone (Hyosung, M620A) pellets were dry blended at room temperature.

The resin composition thus prepared was prepared in the form of a film having a thickness of 100 using a twin screw extruder (BA-19, manufacturer: BAUTECH) to which T-die was fastened. Example 2

350 g polyethylene carbonate (weight average molecular weight 174, 000 g / mol, NatureWorks PLA 300 ID 5 wt%) pellets and 150 g polyketone (Hyosung, M620A) pellets were dry blended at room temperature. The resin composition thus prepared was prepared in the form of a film having a thickness of 100 using a twin screw extruder (BA-19, manufacturer: BAUTECH) to which T-die was fastened. Example 3

250 g polyethylene carbonate (weight average molecular weight 174, 000 g / mol,

NatureWorks PLA 3001D 5wt%) pellets and 250 g polyketone (Hyosung, M620A) pellets were dry blended at room temperature.

The resin composition thus prepared was prepared in the form of a film having a thickness of 100 / im using a twin screw extruder (BA-19, manufacturer: BAUTECH) to which T-die was fastened. Comparative Example 1

500g polyethylene carbonate (weight average molecular weight about 174, 000g / mol with NatureWorks PLA 300 ID 5wt%) pellets alone, twin screw extruder (BA-19, manufactured by BAUTECH) In the form of a film having a thickness of 100 / mm 3 was used.

Experimental Example

For the resin in the form of a film prepared in the above Examples and Comparative Examples, the mass loss rate according to the temperature change was measured using a TGA analysis equipment. In the TGA analysis, measured under a nitrogen atmosphere at room temperature up to 550 ^° C. at a rate of about 10 ^° C./½ in. The results are shown in the graph of FIG. 1.

Referring to FIG. 1, in Comparative Example 1 using only polyethylene carbonate (containing 5% polylactide) alone, thermal decomposition starts from a temperature of about 180 ^° C., and a half decomposition temperature (hal f loss). ) Is about 270 ^° C, very weak at high conditions.

However, in the embodiment of the present invention including polyketone, even at a temperature of about 250 ^° C, it can be clearly seen that no thermal decomposition at all, and some of the thermal decomposition occurs as the temperature increases above about 270 ^° C. However, about 300 ^° C Or more less than in the 20% mass loss temperature, and (if there are no polyketone about 300 ^° mass loss in C is at least 90¾), the anti-degradation temperature above about 320 ^° C, about 50 ^° C compared to the Comparative Examples It is clear that it is higher and the heat stability is very high.

Accordingly, the polyalkylene carbonate resin composition according to the embodiment of the present invention, it can be confirmed that has a high thermal stability, in particular excellent processability and heat even at high temperature processing conditions, such as forming a multilayer film or multilayer sheet by co-extrusion It can be assumed that it can have stability.

Claims

[Range of request]

[Claim 1]

Per 100 parts by weight of polyalkylene carbonate,

Polyalkylene carbonate composition comprising 1 to 100 parts by weight of polyketone.

[Claim 2]

The method of claim 1,

The polyalkylene carbonate, polyalkylene carbonate resin composition comprising a repeating unit represented by the following formula (1):

[Formula 1]

In Chemical 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 1 to 20 carbon atoms or a cycloalkyl group having 3 to 20 carbon atoms; Any two of R ¹ to R ⁴ may be linked to each other to form a cycloalkyl group having 3 to 10 carbon atoms;

m is an integer from 10 to 1,000.

[Claim 3]

The method of claim 1,

The polyalkylene carbonate is at least one member selected from the group consisting of polyethylene carbonate, polypropylene carbonate, polypentene carbonate, polynuxene carbonate, polyoctene carbonate polycyclonucleene carbonate, and copolymers thereof, polyalkylene carbonate resin composition.

[Claim 4] The method of claim 1,

The polyalkylene carbonate, the weight average molecular weight ^"10

1,000,000 g / m, polyalkylene carbonate resin composition.

[Claim 5]

The method of claim 1,

The polyketone is a repeating unit represented by the following formula (2)

Polyalkylene Carbonate Resin Compositions:

[Learning 2]

In Chemical Formula 2,

R is

Linear or branched alkylene having 1 to 10 carbon atoms; Arylene having 1 to 10 carbon atoms; Alkyl ether of 1 to 10 carbon atoms; Aryl ethers having 1 to 10 carbon atoms; Alkyl esters having 1 to 10 carbon atoms; Or an aryl ester having 1 to 10 carbon atoms, and n is an integer of 10 to 1000.

[Claim 6]

The method of claim 1,

The polyketone is an aliphatic polyketone comprising ethylene, propylene, isopropylene, or butylene units, polyalkylene carbonate resin composition.

[Claim 7]

The method of claim 1,

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

[Claim 8] ^{In accordance} with claim 1.

The polyketone has a weight average molecular weight of 10, 000 to l, 000, 000 g / nx) l, polyalkylene carbonate resin composition. [Claim 9]

The method of claim 1,

The polyalkylene carbonate resin composition further comprising 1 to 30 parts by weight of polylactide, based on 100 parts by weight of the polyalkylene carbonate. [Claim 10]

The method of claim 1, wherein.

When the mass loss rate according to the temperature change, the mass loss rate by thermal decomposition at 250 ^° C. is 10% or less, polyalkylene carbonate resin composition. [Claim 11]

The polyalkylene carbonate resin molded article manufactured by the polyalkylene carbonate resin composition of Claim 1.