Bio-based material for consumer product packaging

Abstract

A biodegradable polymer composition for food contact applications is disclosed, comprising at least (1) about 5% to about 95% by weight of a poly(hydroxyalkanoate), (2) about 5% to about 95% by weight of at least one biodegradable polymer selected from the group consisting of poly(butylene succinate), poly(butylene succinate-co-adipate), poly(butylene adipate-co-terephthalate), poly(caprolactone), poly(lactic acid), cellulose esters (such as cellulose acetate), thermoplastic starch, and mixtures thereof, and (3) about 0.1% to about 5% by weight of a nucleating agent.

Description

Cross - reference to related applications

[0001] This application claims the benefit of the earlier filing date of U.S. Provisional Application No. 63 / 058,563, filed on July 30, 2020.

Technical Field

[0002] The present disclosure relates to biodegradable polymer compositions. More specifically, the present disclosure relates to polymer compositions for packaging consumer goods that are biodegradable and / or compostable, and more specifically, compostable at home.

Background Art

[0003] Disposable materials used for the consumption, storage, and packaging of consumer goods are generally petroleum - based polymers such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET). These polymers are excellent in strength, barrier properties, and printing characteristics, but they are not easily decomposed after disposal (by landfill or home composting techniques). Therefore, films, bags, and other materials made from such polymers may remain in landfills for centuries after disposal.

[0004] It is desirable to provide biodegradable polymer compositions suitable for consumer goods packaging. In particular, it is desirable to provide polymer compositions for product packaging that are mainly compostable at home. Most preferably, the polymer composition is completely compostable at home.

[0005] These polymers can be used in several applications currently used in the manufacture of product packaging materials, such as injection molding, compression molding, thermoforming, injection molding and blow - film molding, extrusion coating, extrusion blow molding, injection stretch blow molding, and extrusion profiles.

Summary of the Invention

[0006] In one aspect, the present disclosure provides a biodegradable polymer composition. In one embodiment, the polymer composition comprises at least (1) about 5 wt% to about 95 wt% of poly(hydroxyalkanoate), and (2) at least one biodegradable polymer selected from the group consisting of poly(butylene succinate), poly(butylene succinate-co-adipate), poly(butylene adipate-co-terephthalate), poly(caprolactone), poly(lactic acid), cellulose esters (such as cellulose acetate), thermoplastic starch, and mixtures thereof, in an amount of about 5 wt% to about 95 wt%, and (3) a nucleating agent in an amount of about 0.1 wt% to about 5 wt%.

[0007] In certain embodiments, the polymer composition preferably comprises about 35 wt% to about 90 wt% of poly(hydroxyalkanoate). More preferably, the polymer composition comprises about 40 wt% to about 70 wt% of poly(hydroxyalkanoate).

[0008] In some embodiments, the polymer composition preferably comprises about 5 wt% to about 50 wt% of poly(butylene succinate). More preferably, the polymer composition comprises about 10 wt% to about 30 wt% of poly(butylene succinate).

[0009] According to some embodiments, the polymer composition preferably comprises about 5 wt% to about 50 wt% of poly(butylene succinate-co-adipate). More preferably, the polymer composition comprises about 10 wt% to about 30 wt% of poly(butylene succinate-co-adipate).

[0010] For example, the polymer composition preferably comprises about 10 wt% to about 70 wt% of poly(lactic acid). More preferably, the polymer composition comprises about 20 wt% to about 60 wt% of poly(lactic acid).

[0011] In certain embodiments, the polymer composition preferably comprises from about 5 wt% to about 50 wt% of a cellulose ester, such as cellulose acetate. More preferably, the polymer composition comprises from about 10 wt% to about 30 wt% of a cellulose ester.

[0012] In some embodiments, the poly(hydroxyalkanoate) in the composition preferably consists of a mixture of a first copolymer and a second copolymer. The first copolymer comprises from about 90 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate and from about 0.1 mol% to about 10 mol% of monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms. The second copolymer comprises at least 70 mol% of monomer residues of 3-hydroxybutyrate and monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms, which is at least 6 mol% less than the amount of the second 3-hydroxyalkanoate in the first polymer.

[0013] According to certain embodiments, the nucleating agent is preferably selected from the group consisting of erythritol, pentaerythritol, dipentaerythritol, artificial sweeteners, stearates, polysaccharides, sorbitol, mannitol, inositol, polyester waxes, nanoclays, behenic acid amide, erucic acid amide, stearic acid amide, oleic acid amide, polyhydroxybutyrate, thymine, cyanuric acid, cytosine, adenine, uracil, guanine, boron nitride, and mixtures thereof.

[0014] In some embodiments, the polymer composition preferably also contains up to about 15 wt% of a plasticizer. The plasticizer can be selected from the group consisting of sebacates; citrates; fatty esters of adipic acid, succinic acid, and glucaric acid; lactates; alkyl diesters; citrates; alkyl methyl esters; dibenzoates; propylene carbonate; caprolactone diol having a number average molecular weight of 200 g / mol to 10,000 g / mol; poly(ethylene glycol) having a number average molecular weight of 400 g / mol to 10,000 g / mol; esters of vegetable oils; long-chain alkanoic acids; adipates; glycerol; isosorbide derivatives or mixtures thereof; polymeric plasticizers; poly(hydroxyalkanoate) copolymers containing at least 18 mol% of monomer residues of hydroxyalkanoates other than hydroxybutyrate, and mixtures thereof. More preferably, the polymer composition contains from about 5 wt% to about 15 wt% of the plasticizer.

[0015] In certain embodiments, the polymer composition preferably also contains up to about 50 wt% of a filler. The filler can be selected from the group consisting of calcium carbonate, talc, nanoclay, nanocellulose, hemp fiber, kaolin, carbon black, wollastonite, glass fiber, carbon fiber, graphite fiber, mica, silica, dolomite, barium sulfate, magnetite, halloysite, zinc oxide, titanium dioxide, montmorillonite, feldspar, asbestos, boron, steel, carbon nanotubes, cellulose fiber, flax, cotton, starch, polysaccharides, aluminum hydroxide, magnesium hydroxide, modified starch, chitin and chitosan, alginates, gluten, zein, casein, collagen, gelatin, polysaccharides, guar gum, xanthan gum, succinoglycan, natural rubber, rosin acid, lignin, natural fibers, jute, kenaf, hemp, crushed nut shells, wood flour, and mixtures thereof. The polymer composition more preferably contains from about 5 wt% to about 40 wt% of the filler.

[0016] According to some embodiments, the polymer composition preferably also contains up to about 20 wt% of It also includes an impact resistance improver. This impact resistance improver can be selected from the group consisting of acrylic resins and emulsions, isosorbide derivatives, natural rubber, aliphatic polyesters, or mixtures thereof. The polymer composition preferably contains about 5 wt% to about 15 wt% of the impact resistance improver.

[0017] According to some embodiments, the polymer composition may further include additives. For example, the composition may contain up to 50 wt% of one or more additives selected from the group consisting of poly(vinyl alcohol), poly(vinyl acetate), poly(vinyl laurate), poly(ethylene vinyl acetate), poly(glycolic acid), furandicarboxylic acid-based polyesters, cellulose, nanocellulose, glucan, and mixtures thereof.

[0018] Generally, the poly(hydroxyalkanoate) contained in the polymer composition may be either a homopolymer or a copolymer such as a terpolymer. Thus, in certain embodiments, the poly(hydroxyalkanoate) is preferably a copolymer composed of about 75 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate and about 0.1 mol% to about 25 mol% of monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms. In other embodiments, the poly(hydroxyalkanoate) is preferably a terpolymer composed of about 75 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate, about 0.1 mol% to about 25 mol% of monomer residues of 3-hydroxyhexanoate, and about 0.1 mol% to about 25 mol% of monomer residues of a third 3-hydroxyalkanoate having 5 to 12 carbon atoms.

[0019] In certain embodiments, it is preferred that the poly(hydroxyalkanoate) and at least one biodegradable polymer react with each other by transesterification.

[0020] In other embodiments, it is preferred that the poly(hydroxyalkanoate) and at least one biodegradable polymer react with each other in a reactive extrusion process.

[0021] Further, in certain embodiments, the poly(hydroxyalkanoate) of the polymer composition preferably has a weight average molecular weight of from about 50,000 Daltons to about 7.5 million Daltons, more preferably from about 300,000 Daltons to about 3 million Daltons.

[0022] In a further aspect, the present disclosure also provides a packaging material for consumer goods, the product packaging material comprising at least one biodegradable packaging material portion comprising the polymer composition.

[0023] In certain embodiments, the at least one biodegradable packaging material portion is preferably formed by a method selected from the group consisting of injection molding, compression molding, thermoforming, injection molding and blow film molding, extrusion coating, extrusion blow molding, injection stretch blow molding, and extrusion profiles.

Mode for Carrying Out the Invention

[0024] In one aspect, the present disclosure provides a polymer composition particularly suitable for packaging materials for consumer goods.

[0025] Preferably, the polymer composition is biodegradable and / or compostable. More particularly, the polymer composition is both biodegradable and compostable.

[0026] As used herein, the term "biodegradable" refers to plastics or polymer materials that are biodegradable by organisms (microorganisms) in anaerobic and aerobic environments (determined by ASTM D5511), soil environments (determined by ASTM 5988), freshwater environments (determined by ASTM D5271 (EN 29408)), or marine environments (determined by ASTM D6691). The biodegradability of biodegradable plastics can also be measured by ASTM D6868 or European EN 13432.

[0027] The polymer composition of the present disclosure is preferably also "compostable" as determined by ASTM D6400 for industrial or home compostability.

[0028] In particular, the biodegradable polymer composition contains poly(hydroxyalkanoate) as the first biodegradable polymer. The composition generally consists of about 5 wt% to about 95 wt% of poly(hydroxyalkanoate). The composition more preferably consists of about 35 wt% to about 90 wt% of poly(hydroxyalkanoate). The polymer composition even more preferably contains about 40 wt% to about 70 wt% of poly(hydroxyalkanoate).

[0029] For example, the poly(hydroxyalkanoate) in the composition is preferably composed of a mixture of a first copolymer and a second copolymer. The first copolymer contains about 90 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate and about 0.1 mol% to about 10 mol% of monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms. The second copolymer contains at least 70 mol% of monomer residues of 3-hydroxybutyrate and at least 6 mol% less of monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms than the amount of the second 3-hydroxyalkanoate in the first polymer. It has surprisingly been found that when the difference in the molar fraction of the second 3-hydroxyalkanoate in the first copolymer and the second copolymer is at least 6 mol%, the first and second copolymers are immiscible with each other and instead separate into different phases within the composition. This can be utilized to advantageously change the properties of the final composition.

[0030] In such cases, by including a relatively small amount of the second PHA copolymer, the impact properties or toughness of the composition can be improved, providing an article with improved performance.

[0031] The polymer composition also includes a second biodegradable polymer selected from the group consisting of poly(butylene succinate), poly(butylene succinate-co-adipate), poly(butylene adipate-co-terephthalate), poly(caprolactone), poly(lactic acid), cellulose esters (such as cellulose acetate), thermoplastic starch, and mixtures thereof. The amount of the second biodegradable polymer is typically from about 5 wt% to about 95 wt% of the total composition.

[0032] In some embodiments, the second biodegradable polymer may include from about 5 wt% to about 50 wt% of poly(butylene succinate) of the polymer composition. More preferably, the polymer composition includes from about 10 wt% to about 30 wt% of poly(butylene succinate).

[0033] In some embodiments, the second biodegradable polymer may include from about 5 wt% to about 50 wt% of poly(butylene succinate)-co-butylene adipate of the polymer composition. More preferably, the polymer composition includes from about 10 wt% to about 30 wt% of poly(butylene succinate)-co-butylene adipate.

[0034] For example, the second biodegradable polymer may include from about 10 wt% to about 70 wt% of poly(lactic acid) of the polymer composition. More preferably, the polymer composition includes from about 20 wt% to about 60 wt% of poly(lactic acid).

[0035] In certain embodiments, the second biodegradable polymer may include from about 5 wt% to about 50 wt% of cellulose acetate or another cellulose ester of the polymer composition. More preferably, the polymer composition includes from about 10 wt% to about 30 wt% of cellulose acetate or another cellulose ester.

[0036] In the various compositions described above, the polyhydroxyalkanoate polymer may be a homopolymer consisting of only one type of monomer residue. However, generally, the polyhydroxyalkanoate polymer is a copolymer consisting of at least two different monomer residues. For example, the polyhydroxyalkanoate polymer may be a terpolymer consisting of at least three different monomer residues.

[0037] For example, in some embodiments, the at least one polyhydroxyalkanoate polymer preferably comprises a copolymer composed of about 75 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate and about 0.1 mol% to about 25 mol% of monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms.

[0038] In other embodiments, the at least one polyhydroxyalkanoate polymer preferably comprises a terpolymer composed of about 75 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate, about 0.1 mol% to about 25 mol% of monomer residues of 3-hydroxyhexanoate, and about 0.1 mol% to about 25 mol% of monomer residues of a third 3-hydroxyalkanoate having 5 to 12 carbon atoms.

[0039] Generally, the at least one polyhydroxyalkanoate polymer has a weight average molecular weight of about 50,000 daltons to about 7.5 million daltons, more preferably about 300,000 daltons to about 3 million daltons.

[0040] In certain embodiments, it is preferred that poly(hydroxyalkanoate) and at least one biodegradable polymer react with each other by transesterification. In such cases, a small amount of catalyst (such as tin ethylhexanoate) may optionally be incorporated into the composition to facilitate the transesterification reaction. By transesterifying poly(hydroxyalkanoate) with at least one biodegradable polymer, for example, a branched structure can be obtained that provides better processability with less energy consumption. Transesterification can also improve the physical properties because the transesterified polymer acts as a surfactant and can improve the compatibility of other polymer molecules in the composition that did not react completely.

[0041] Most commonly, poly(hydroxyalkanoate) and at least one biodegradable polymer are reacted with each other in a reactive extrusion process, and the aforementioned transesterification is carried out.

[0042] The polymer composition typically also contains from about 0.1 wt% to about 5 wt% of a nucleating agent. In certain embodiments, the nucleating agent for the core layer is preferably selected from the group consisting of erythritol, pentaerythritol, dipentaerythritol, artificial sweeteners, stearates, polysaccharides, sorbitol, mannitol, inositol, polyester waxes, nanoclay, behenic acid amide, erucic acid amide, stearic acid amide, oleic acid amide, polyhydroxybutyrate, thymine, cyanuric acid, cytosine, adenine, uracil, guanine, boron nitride, and mixtures thereof.

[0043] The polymer composition may similarly contain a plasticizer material. Materials suitable as plasticizers typically include sebacates; citrates; fatty esters of adipic acid, succinic acid, and glucaric acid; lactates; alkyl diesters; citrates; alkyl methyl esters; dibenzoate It is selected from the group consisting of: toluene; propylene carbonate; caprolactone diol having a number average molecular weight of 200 to 10,000 g / mol; poly(ethylene glycol) having a number average molecular weight of 400 to 10,000 g / mol; esters of vegetable oils; long-chain alkanoic acids; adipates; glycerol; isosorbide derivatives or mixtures thereof; polymer plasticizers; poly(hydroxyalkanoate) copolymers containing at least 18 mol% of monomer residues of hydroxyalkanoates other than hydroxybutyrate, and mixtures thereof.

[0044] The amount of plasticizer in the polymer composition may be up to about 15% by weight. More preferably, the polymer composition contains about 5% to about 15% by weight of plasticizer.

[0045] The polymer composition may optionally also contain a filler material. Materials suitable as fillers are typically selected from the group consisting of calcium carbonate, talc, nanoclay, nanocellulose, hemp fiber, kaolin, carbon black, wollastonite, glass fiber, carbon fiber, graphite fiber, mica, silica, dolomite, barium sulfate, magnetite, halloysite, zinc oxide, titanium dioxide, montmorillonite, feldspar, asbestos, boron, steel, carbon nanotubes, cellulose fiber, flax, cotton, starch, polysaccharides, aluminum hydroxide, magnesium hydroxide, modified starch, chitin and chitosan, alginates, gluten, zein, casein, collagen, gelatin, polysaccharides, guar gum, xanthan gum, succinoglycan, natural rubber, rosin acid, lignin, natural fibers, jute, kenaf, hemp, crushed nut shells, wood flour, and mixtures thereof.

[0046] The amount of filler in the polymer composition may be up to about 50% by weight. More preferably, the polymer composition of the core layer contains about 5% to about 40% by weight of filler.

[0047] Furthermore, the polymer composition may also contain an impact modifier up to about 20% by weight. More preferably, the polymer composition contains an impact modifier in an amount of about 5% to about 15% by weight. The impact modifier suitable for the polymer composition is preferably selected from the group consisting of acrylic resins and emulsions, isosorbide derivatives, natural rubbers, aliphatic polyesters, or mixtures thereof.

[0048] Furthermore, for example, the polymer composition may contain up to 50% by weight of one or more additives selected from the group consisting of poly(vinyl alcohol), poly(vinyl acetate), poly(vinyl laurate), poly(ethylene vinyl acetate), poly(glycolic acid), furandicarboxylic acid-based polyesters, cellulose, nanocellulose, glucan, and mixtures thereof.

[0049] In each of the various polymer compositions described above, the polyhydroxyalkanoate polymer may be a homopolymer consisting of only one type of monomer residue. However, generally, the polyhydroxyalkanoate polymer is a copolymer consisting of at least two different monomer residues. For example, the polyhydroxyalkanoate polymer may be a terpolymer consisting of at least three different monomer residues.

[0050] For example, in some embodiments, the at least one polyhydroxyalkanoate polymer preferably comprises a copolymer composed of about 75 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate and about 0.1 mol% to about 25 mol% of monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms.

[0051] In other embodiments, the at least one polyhydroxyalkanoate polymer preferably comprises about 75 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate, about 0.1 mol% to about 25 mol% of monomer residues of 3-hydroxyhexanoate, and about It contains a terpolymer consisting of 0.1 mol% to about 25 mol%.

[0052] Generally, the at least one polyhydroxyalkanoate polymer has a weight average molecular weight of about 50,000 Daltons to about 7.5 million Daltons, more preferably a weight average molecular weight of about 300,000 Daltons to about 3 million Daltons.

[0053] In a further aspect, the present disclosure also provides a product packaging material for consumer products, and the product packaging material uses the aforementioned polymer composition. Specifically, the product packaging material includes at least one biodegradable packaging material portion containing the aforementioned polymer composition. The product packaging material can be used for packaging materials such as clothing, daily necessities, food, health and beauty products, etc.

[0054] In certain embodiments, the biodegradable packaging material portion can be formed by a method selected from the group consisting of injection molding, compression molding, thermoforming, injection molding and blow film molding, extrusion coating, extrusion blow molding, injection stretch blow molding, and extrusion profiles.

[0055] The preferred embodiments of the present invention have been described above, which are for the purpose of illustration and description. These embodiments do not limit the present invention to the forms disclosed herein. Modifications or variations that are obvious in light of the above teachings are possible. The above embodiments provide the best examples of the principles of the present invention and its practical applications, so that those skilled in the art can use the present invention in various embodiments and make various modifications suitable for the specific usage methods assumed. Such modifications and variations are all within the scope of the present invention determined by the scope of the claims when the appended claims are interpreted according to the scope in which they are fairly, legally, and properly qualified.

Claims

1. (1) about 5 wt% to about 95 wt% of poly(hydroxyalkanoate), and (2) about 5 wt% to about 95 wt% of at least one biodegradable polymer selected from the group consisting of poly(butylene succinate), poly(butylene succinate-co-adipate), poly(butylene adipate-co-terephthalate), poly(caprolactone), cellulose ester, thermoplastic starch, and mixtures thereof, and (3) about 0.1 wt% to about 5 wt% of a nucleating agent, comprising a biodegradable polymer composition, wherein the poly(hydroxyalkanoate) comprises a mixture of a first copolymer and a second copolymer, the first copolymer consisting of about 90 mol% to about 99.9 mol% of monomer residues of 3-hydroxybutyrate and about 0.1 mol% to about 10 mol% of monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms, the second copolymer consisting of at least 70 mol% of monomer residues of 3-hydroxybutyrate and monomer residues of a second 3-hydroxyalkanoate having 5 to 12 carbon atoms that are at least 6 mol% less than the amount of the second 3-hydroxyalkanoate in the first polymer, and the poly(hydroxyalkanoate) and the at least one biodegradable polymer are transesterified with each other, a biodegradable polymer composition.

2. The polymer composition according to claim 1, comprising about 35 wt% to about 90 wt% of poly(hydroxyalkanoate).

3. The polymer composition according to claim 1, comprising about 30 wt% to about 90 wt% of poly(butylene succinate).

4. The polymer composition according to claim 1, comprising about 30 wt% to about 90 wt% of poly(butylene succinate-co-adipate).

5. The polymer composition according to claim 1, comprising about 30 wt% to about 90 wt% of cellulose ester.

6. The polymer composition according to claim 1, wherein the nucleating agent is selected from the group consisting of erythritol, pentaerythritol, dipentaerythritol, artificial sweeteners, stearates, polysaccharides, sorbitol, mannitol, inositol, polyester waxes, nanoclay, behenic acid amide, erucic acid amide, stearic acid amide, oleic acid amide, poly(hydroxybutyrate), thymine, cyanuric acid, cytosine, adenine, uracil, guanine, boron nitride, and mixtures thereof.

7. Furthermore, sebacate; citrate; fatty esters of adipic acid, succinic acid and glucaric acid; lactate; alkyl diester; citrate; alkyl methyl ester; dibenzoate; propylene carbonate; caprolactone diol having a number average molecular weight of 200 to 10,000 g / mol; poly(ethylene glycol) having a number average molecular weight of 400 to 10,000 g / mol; esters of vegetable oils; long-chain alkyl acids; adipate; glycerol; isosorbide derivatives or mixtures thereof; polymer plasticizers; poly(hydroxyalkanoate) copolymers containing at least 18 mol% of monomer residues of hydroxyalkanoates other than hydroxybutyrate, and mixtures thereof, the polymer composition according to claim 1, containing up to about 15% by weight of a plasticizer selected from the group consisting of.

8. In the polymer composition according to claim 7, the composition contains about 5% to about 15% by weight of the plasticizer.

9. Furthermore, a filler selected from the group consisting of calcium carbonate, talc, nanoclay, nanocellulose, hemp fiber, kaolin, carbon black, wollastonite, glass fiber, carbon fiber, graphite fiber, mica, silica, dolomite, barium sulfate, magnetite, halloysite, zinc oxide, titanium dioxide, montmorillonite, feldspar, asbestos, boron, steel, carbon nanotube, cellulose fiber, flax, cotton, starch, polysaccharide, aluminum hydroxide, magnesium hydroxide, modified starch, chitin and chitosan, alginate, gluten, zein, casein, collagen, gelatin, polysaccharide, guar gum, xanthan gum, succinoglycan, natural rubber, rosin acid, lignin, natural fiber, jute, kenaf, hemp, crushed nut shell, wood flour, and mixtures thereof, is included up to about 50% by weight in the polymer composition according to claim 1.

10. The polymer composition according to claim 9, which contains the filler in an amount of about 5% to about 40% by weight.

11. Furthermore, an impact modifier selected from the group consisting of acrylic resin and emulsion, isosorbide derivative, natural rubber, aliphatic polyester, or mixtures thereof, is included up to about 20% by weight in the polymer composition according to claim 1.

12. The polymer composition according to claim 11, which contains the impact modifier in an amount of about 5% to about 15% by weight.

13. Furthermore, one or more additives selected from the group consisting of poly(vinyl alcohol), poly(vinyl acetate), poly(vinyl laurate), poly(ethylene vinyl acetate), poly(glycolic acid), furandicarboxylic acid-based polyester, cellulose, nanocellulose, glucan, and mixtures thereof, are included up to 50% by weight in the polymer composition according to claim 1.

14. The polymer composition according to claim 1, wherein the poly(hydroxyalkanoate) has a weight average molecular weight of about 50,000 daltons to about 7.5 million daltons.

15. The polymer composition according to claim 1, wherein the poly(hydroxyalkanoate) and the at least one biodegradable polymer transesterify with each other.

16. The polymer composition according to claim 1, wherein the poly(hydroxyalkanoate) and the at least one biodegradable polymer are reactive extruded with each other.

17. A product packaging material for a consumer product, comprising at least one biodegradable packaging material portion containing the polymer composition according to claim 1.

18. The product packaging material according to claim 17, wherein the at least one biodegradable packaging material portion is formed by a method selected from the group consisting of injection molding, compression molding, thermoforming, injection molding, and blow film molding, extrusion coating, extrusion blow molding, injection stretch blow molding, and extrusion profiles.