Plastic compositions and plastic products

Abstract

To provide a plasticizer, a plastic composition and a plastic product.SOLUTION: The present disclosure provides a plasticizer that is biodegradability and has a structure shown in formula (I), where the formula (I) is as defined in a specification, and the plasticizer has a central structure. Therefore, the plasticizer of the present disclosure can reduce damage to an environment and ecology due to its biodegradable property, and is designed to have no phthalate structure, making it has an excellent safety, and can prevent the plasticizer from material. It is safe and can prevent the plasticizer from affecting normal physiological functions. Furthermore, since methyl anthranilate is edible, by designing a plasticizer with a structure similar to that of methyl anthranilate, it can have relatively safe biochemical properties.SELECTED DRAWING: None

Description

Technical Field

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[0001] The present disclosure relates to , a plastic composition and a plastic product, and particularly to a biodegradable plasticizer including relates to a plastic composition and a plastic product.

Background Art

[0002] A plasticizer is a material for increasing the plasticity of a product and is always used for plasticizing plastic products. Conventional plasticizers currently in common use are often compounds of phthalic acid esters with structures similar to estrogen, such as DEHP, DBP, DINP, BBP, and DIDP. Such plasticizers are non-biodegradable substances and may abnormally develop children during puberty and further increase the incidence of breast cancer and ovarian cancer. Since a plasticizer binds to other substances in a non-chemically bonded form in a plastic product and is easily released from the plastic product, when the plastic product comes into contact with food or skin, it is absorbed by the human body.

[0003] In recent years, environmental protection awareness has been increasing. For conventional plastic products, if not properly treated, they will damage the environment and ecology. Moreover, although more and more biodegradable products are being widely popularized, their decomposition rate is not high. Most plasticizers and plastics still cannot be decomposed, but users mistakenly think that such products are biodegradable and thus will not affect the environment and ecology even if they are arbitrarily treated. As a result, such plastic products are not properly treated, further deepening the damage to the environment and ecology. Currently, since plastic products have already become an indispensable part of human life, it is very important to search for plasticizers that are difficult to be released from or absorbed by the human body from plastic products and develop biodegradable plastic products.

Summary of the Invention

[0004] Book Disclosure isThe present invention provides a plastic composition containing a biodegradable plasticizer, which, due to the properties of the biodegradable plasticizer, can reduce damage to the environment and ecosystems, and can also have a good plasticizing effect by designing a specific mixing ratio.

[0005] According to this disclosure, At least one piece of plastic, A plasticizer that is biodegradable and has the structure shown in formula (I), The present invention provides a plastic composition containing the following: [ka] In the equation, X is the central structure. The weight percentage of plasticizers in the plastic composition is between 0.01% and 15%. The plastic is biodegradable plastic. The number of carbon atoms in X is XC, and the condition 3 ≤ XC ≤ 8 is satisfied.

[0006] As a result, the plasticizer described herein, due to its biodegradable properties, can reduce damage to the environment and ecosystems, and by being designed without a phthalate ester structure, it has superior safety compared to conventional non-biodegradable plasticizers, preventing the plasticizer from affecting normal physiological functions. Furthermore, since methyl anthranilate is a naturally occurring compound found in fruits and is edible, designing a plasticizer with a structure similar to methyl anthranilate can result in a relatively safe biochemical property.

[0008] According to this disclosure, a plastic product containing the aforementioned plastic composition is provided.

[0009] As a result, the plastic compositions and plastic products described herein can be designed to include plasticizers with biodegradable properties, thereby reducing environmental and ecological damage.

[0010] The present disclosure provides a plastic composition comprising at least one plastic and at least one plasticizer. The plasticizer comprises a biodegradable aminobenzoyl ester compound and has the structure shown in formula (I). [ka] In the formula, X is the central structure, and the central structure is a linear structure. The weight percentage of plastic in the plastic composition is 85% to 99.99%, and the weight percentage of plasticizer in the plastic composition is 0.01% to 6 It is a percentage.

[0011] According to this disclosure, a plastic product containing the aforementioned plastic composition is provided.

[0012] As a result, the plastic compositions and plastic products described herein can reduce environmental and ecological damage due to the properties of biodegradable plasticizers, and can also have a good plasticizing effect by designing a specific mixing ratio. [Modes for carrying out the invention]

[0013] One embodiment of the present disclosure provides a plasticizer that is biodegradable and has the structure shown in formula (I). [ka] (In the equation, X is the central structure.) This allows for reduced environmental and ecological damage due to its biodegradable properties. Furthermore, by designing it to be phthalate ester-free, it offers superior safety compared to conventional non-biodegradable plasticizers, preventing the plasticizer from affecting normal physiological functions. In addition, since methyl anthranilate is a naturally occurring compound found in fruits and is edible, designing a plasticizer with a similar structure to methyl anthranilate allows for relatively safe biochemical properties.

[0014] According to the plasticizer described herein, in formula (I), the number of carbon atoms in X is XC, and the condition 1 ≤ XC ≤ 8 may be satisfied. This contributes to the plasticizer having an excellent decomposition rate by satisfying the number of carbon atoms in the central structure. Alternatively, the condition 2 ≤ XC ≤ 7 may be satisfied. Alternatively, the condition 2 ≤ XC ≤ 6 may be satisfied. Alternatively, the condition 3 ≤ XC ≤ 5 may be satisfied.

[0015] According to the plasticizer described herein, X in formula (I) may be a linear structure. This prevents the plasticizer from vaporizing at high temperatures and being inhaled by the human body, as the linear molecule has a higher boiling point than the branched molecule.

[0016] According to the plasticizers described herein, the molecular weight of the plasticizer is Mw, and the condition 300 g / mole ≤ Mw may be satisfied. This allows for the design of plasticizers with specific molecular weights, making them less absorbable by the human body and providing excellent safety. Alternatively, the condition 305 g / mole ≤ Mw ≤ 500 g / mole may be satisfied. Alternatively, the condition 310 g / mole ≤ Mw ≤ 450 g / mol may be satisfied. Alternatively, the condition 315 g / mole ≤ Mw ≤ 400 g / mole may be satisfied. Alternatively, the condition 320 g / mole ≤ Mw ≤ 350 g / mole may be satisfied. Alternatively, the condition 325 g / mole ≤ Mw ≤ 330 g / mole may be satisfied.

[0017] According to the plasticizer described herein, the decomposition temperature of the plasticizer is Pt, and the condition 100°C ≤ Pt may be satisfied. This contributes to the structural stability of the plasticizer at high temperatures due to its high decomposition temperature. Alternatively, the condition 150°C ≤ Pt may be satisfied. Alternatively, the condition 200°C ≤ Pt may be satisfied. Alternatively, the condition 250°C ≤ Pt may be satisfied. Alternatively, the condition 300°C ≤ Pt ≤ 500°C may be satisfied.

[0018] According to the plasticizer of the present disclosure, the decomposition rate on the 63rd day is Dr63, and the decomposition rate of the plasticizer on the 63rd day may satisfy the condition of 92% ≤ Dr63. Thereby, by satisfying the decomposition rate of the plasticizer on the 63rd day, it contributes to the improvement of the decomposition rate of the plasticizer. Or, it may satisfy the condition of 93% ≤ Dr63. Or, it may satisfy the condition of 94% ≤ Dr63. Or, it may satisfy the condition of 94.5% ≤ Dr63 ≤ 100%.

[0019] Another embodiment of the present disclosure provides a plastic composition comprising at least one plastic and the aforementioned plasticizer. Thereby, the plasticizer having biodegradable properties can reduce the damage to the environment and ecology.

[0020] A further embodiment of the present disclosure provides a plastic composition comprising at least one plastic and at least one plasticizer. The plasticizer includes an aminobenzoyl ester compound having biodegradability. Thereby, the plasticizer having biodegradable properties can reduce the damage to the environment and ecology.

[0021] According to the plastic composition described herein, the weight percentage of plastic in the plastic composition is 85% to 99.99%, and the weight percentage of plasticizer in the plastic composition is 0.01% to 15%. By designing a specific mixing ratio, the plastic composition will have a good plasticizing effect. Alternatively, the weight percentage of plastic in the plastic composition may be 87.5% to 99.99%, and the weight percentage of plasticizer in the plastic composition may be 0.01% to 12.5%. Alternatively, the weight percentage of plastic in the plastic composition may be 90% to 99.99%, and the weight percentage of plasticizer in the plastic composition may be 0.01% to 10%. Alternatively, the weight percentage of plastic in the plastic composition may be 92.5% to 99.99%, and the weight percentage of plasticizer in the plastic composition may be 0.01% to 7.5%. Alternatively, the weight percentage of plastic in the plastic composition may be 94% to 99.99%, and the weight percentage of plasticizer in the plastic composition may be 0.01% to 6%.

[0022] According to the plastic composition described herein, the plastic may be a biodegradable plastic. This reduces environmental and ecological damage due to the properties of the biodegradable plastic and the plasticizer.

[0023] The plastic composition described herein may further contain at least one non-biodegradable plastic, and the weight percentage of the non-biodegradable plastic in the plastic composition is less than the weight percentage of the biodegradable plastic in the plastic composition. This contributes to the stability of the molding and structure of the plastic composition by including a non-biodegradable plastic. Furthermore, by having a weight percentage of non-biodegradable plastic in the plastic composition that is less than the weight percentage of biodegradable plastic in the plastic composition, it is possible to ensure that the plastic composition has a good decomposition rate.

[0024] According to the plastic composition described herein, the decomposition rate on day 14 is Dr14, and the decomposition rate of the plastic composition on day 14 may satisfy the condition 1% ≤ Dr14. This contributes to improving the initial decomposition rate of the plastic composition by satisfying the decomposition rate on day 14. Alternatively, the condition 1.5% ≤ Dr14 may be satisfied. Alternatively, the condition 2% ≤ Dr14 may be satisfied. Alternatively, the condition 2.4% ≤ Dr14 ≤ 100% may be satisfied.

[0025] According to the plastic composition described herein, the decomposition rate on day 21 is Dr21, and the decomposition rate of the plastic composition on day 21 may satisfy the condition 5% ≤ Dr21. This contributes to improving the short-term decomposition rate of the plastic composition by satisfying the decomposition rate on day 21. Alternatively, the condition 7.5% ≤ Dr21 may be satisfied. Alternatively, the condition 10% ≤ Dr21 may be satisfied. Alternatively, the condition 12.5% ​​≤ Dr21 may be satisfied. Alternatively, the condition 14% ≤ Dr21 ≤ 100% may be satisfied.

[0026] According to the plastic composition described herein, the decomposition rate on day 28 is Dr28, and the decomposition rate of the plastic composition on day 28 may satisfy the condition 10% ≤ Dr28. This contributes to improving the short- and medium-term decomposition rate of the plastic composition by satisfying the decomposition rate on day 28. Alternatively, the condition 15% ≤ Dr28 may be satisfied. Alternatively, the condition 20% ≤ Dr28 may be satisfied. Alternatively, the condition 25% ≤ Dr28 may be satisfied. Alternatively, the condition 30% ≤ Dr28 may be satisfied. Alternatively, the condition 35% ≤ Dr28 ≤ 100% may be satisfied.

[0027] According to the plastic composition described herein, the decomposition rate on day 42 is Dr42, and the decomposition rate of the plastic composition on day 42 may satisfy the condition 20% ≤ Dr42. This contributes to improving the medium-term decomposition rate of the plastic composition by satisfying the decomposition rate on day 42. Alternatively, the condition 25% ≤ Dr42 may be satisfied. Alternatively, the condition 30% ≤ Dr42 may be satisfied. Alternatively, the condition 35% ≤ Dr42 may be satisfied. Alternatively, the condition 40% ≤ Dr42 may be satisfied. Alternatively, the condition 45% ≤ Dr42 may be satisfied. Alternatively, the condition 50% ≤ Dr42 ≤ 100% may be satisfied.

[0028] In the plasticizers described in this disclosure, a relatively large molecular weight means that the molecular weight of the plasticizer is greater than 300 g / mole, and it is not limited to plastic materials, but can plasticize different plastics, thus having broader applicability and convenience.

[0029] The plasticizer described in this disclosure may be an aminobenzoyl ester compound, where the aminobenzoyl ester compound refers to a compound having an acyl group, an ester group, and an aminobenzene group simultaneously, and the aminobenzoyl ester compound may be 4-(2-aminobenzoyloxy)butyl 2-aminobenzoate.

[0030] In the plasticizer described herein, the atoms of the X structure in formula (I) may include at least one of carbon atoms, sulfur atoms, oxygen atoms, and nitrogen atoms. The bonds of the X structure may include at least one of carbon-carbon single bonds, carbon-carbon double bonds, carbon-carbon triple bonds, carbon-oxygen bonds, carbon-nitrogen bonds, double sulfur bonds, sulfur-oxygen bonds, sulfur-carbon bonds, sulfur-nitrogen bonds, double nitrogen bonds, nitrogen-oxygen bonds, and double oxygen bonds. The functional groups of the X structure may include at least one of alkyl groups, alkenyl groups, alkynyl groups, hydroxyl groups, carbonyl groups, aldehyde groups, carbonate groups, carboxyl groups, ether groups, ester groups, amide groups, primary amino groups, secondary amino groups, tertiary amino groups, ketimine groups, and aldimine groups. Furthermore, the number of carbon atoms XC in the X structure may be 4, in which case the plasticizer is 4-(2-aminobenzoyloxy)butyl 2-aminobenzoate. The number of carbon atoms XC in the X structure may be 1, in which case the plasticizer is 2-aminobenzoic acid-4-(2-aminobenzoyloxy)methyl. The number of carbon atoms XC in the X structure may also be 8, in which case the plasticizer is 2-aminobenzoic acid-4-(2-aminobenzoyloxy)octyl.

[0031] The plastic compositions described herein may include biodegradable plasticizers and biodegradable plastics, and a balance between functionality and biodegradability can be achieved by adding or substituting non-biodegradable plasticizers and non-biodegradable plastics as needed. For example, a plastic composition may consist of a biodegradable plasticizer and a biodegradable plastic, with the addition of a non-biodegradable plastic, wherein the weight percentage of the non-biodegradable plastic in the plastic composition is less than the weight percentage of the biodegradable plastic in the plastic composition.

[0032] The plastic compositions described herein may contain at least one additive, such as stabilizers, lubricants, immobilizers, flame retardants, colorants, fillers, antistatic agents, light stabilizers, foaming agents, coupling agents, and reinforcing agents. In particular, the stabilizer may be calcium stearate, the lubricant may be a fatty acid, the flame retardant may be antimony trioxide, the colorant may be antimony dioxide, the filler may be calcium carbonate, glass fiber, asbestos fiber, carbon fiber, boron fiber, copper disulfide, mica, asbestos, silica, silicates, metal oxides, carbon black, glass beads, or wood powder, the antistatic agent may be stearamidopropyldimethyl-β-hydroxyethylamine nitrate, the light stabilizer may be salicylic acid esters, benzophenones, benzotriazoles, substituted propylenes, substituted acrylonitriles, triazines, or organic complexes, and the foaming agent may be azodicarbonamide. This allows for the modification of the properties of plastics, thereby altering their impact resistance, weather resistance, heat resistance, fluidity, elasticity, corrosion resistance, deformation resistance, light transmittance, creep resistance, antistatic properties, photodegradation resistance, specific gravity, or toughness.

[0033] The plastic compositions described herein may be polylactic acid (PLA) as the biodegradable plastic, or they may be copolymers or mixtures of starch, butylene adipate-butylene terephthalate copolymer (PBAT), polybutylene succinate (PBS), polymethylethylene carbonate (PPC), polyhydroxyalkanoates (PHA), polycaprolactone (PCL), polyvinyl alcohol (PVA), polyglycolide (PGA), polyglycerol sebacate (PGS), polyhydroxybutyrate (PHB), or the above polymer monomers.

[0034] The plastic compositions described herein are non-biodegradable plastics including polyethylene terephthalate-1,4-cyclohexanedimethanol (PETG), polyethylene terephthalate (PET), high-density polyethylene (HDPE), polyvinyl chloride (PVC), low-density polyethylene (LDPE), polypropene (PP), polystyrene (PS), polycarbonate (PC), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene copolymer (ABS), cycloolefin copolymer (COC), or melamine-formaldehyde resin (Melamine The material may be a resin, or a copolymer or mixture formed from the above polymer monomers.

[0035] The decomposition rates described in this disclosure are calculated as a percentage of decomposition in units of weight, using ASTM-D5338 as the standard measurement method under decomposition conditions. The decomposed material and activated sludge (fertilizer) are mixed at a weight ratio of 1:6, and the moisture content in the decomposition tank is maintained at approximately 50% with perlite. The decomposition tank is placed at 58±2℃ and observed continuously for 180 days. The main components of the compost include livestock manure, soybean flour, bagasse, wood chips, bran, and spent mushroom growing medium. The components of the perlite are as shown in Table 1 below. [Table 1] During the test monitoring process, a fresh 0.1M KOH aqueous solution is prepared, dispensed into a 50mL PP tank, placed in a decomposition tank, and then incubated in a constant temperature bath (58±2℃). The KOH aqueous solution absorbs the CO2 released by the decomposition products during the decomposition process. The KOH is replaced 6 times / week during the initial decomposition period (1-30 days), then changed to 2 times / week after 1 month, and this continues until 180 days. The total test time may be longer than 180 days. The collected KOH is measured using a pH meter, and its pH is compared with that of a control group (0.1M KOH aqueous solution placed in a constant temperature bath without decomposition). The hydrogen ion concentration is then converted, and the CO2 weight is converted using the hydrogen ion concentration to estimate the decomposition rate. The conversion formulas mentioned above are: change in hydroxyl group concentration = hydroxyl group concentration of the control group - hydroxyl group concentration of the experimental group = hydrogen ion concentration; weight of carbon dioxide (unit: milligrams) = hydrogen ion concentration × 44 / 2 × 50 mL (where 44 is the molecular weight of carbon dioxide, 2 is the reaction equilibrium coefficient of carbon dioxide, and 50 mL is the volume of the aqueous solution); and mineralization (decomposition) percentage = change in weight of carbon dioxide / theoretical carbon dioxide content of the composition × 100%.

[0036] The definition of the decomposition rate on day n as described in this disclosure means the number of days the sample was left in the decomposition tank using ASTM-D5338 as the standard measurement method, and day n may be day 7, day 8, day 9, day 10, day 14, day 21, day 24, day 25, day 26, day 28, day 29, day 30, day 31, day 42, day 52, day 56, day 59, day 63, day 66, day 70, day 73, day 77, day 80, day 84, day 87, day 91, day 94, day 98, day 101, day 150, day 154, day 157, day 175, day 178, day 182, or day 185, or any decomposition rate from day 1 to day 185.

[0037] The technical features of the plasticizers and plastic compositions described in this disclosure can be combined and arranged to achieve the corresponding effects.

[0038] Further embodiments of the present disclosure provide plastic products comprising the aforementioned plastic compositions. Furthermore, the plastic products of the present disclosure may include packaging films, composite paper, disposable containers or storage containers, disposable tableware, food packaging, cable ties, strings, bandage films, agricultural seedling cup trays, mushroom growing medium bags, fertilizer bags, agricultural tapes or bands, agricultural tiles or coverings, agricultural perforated trays, fruit and vegetable bags, agricultural ridge covering films, surgical needles, surgical films, bone plates, drug carriers, inorganic mixtures, prosthetic materials, biological suture anchors, biological tissue brackets, bone pins, biological tissue fillers, biological sutures, biological laboratory petri dishes, biological laboratory containers, biological laboratory micropipettes, biological laboratory centrifuge tubes, or laboratory gloves.

[0039] Based on the above embodiments, specific comparative examples and examples will be described in detail below.

[0040] <Comparative Example 1>

[0041] The plastic composition of Comparative Example 1 contains only plastic, and the plastic contained therein is polylactic acid. Please refer to Table 2A for the components and content of the plastic composition of Comparative Example 1. [Table 2A]

[0042] Refer to Tables 2B, 2C, and 2D, which show the degradation rates of the plastic composition of the first comparative example at different number of days. [Table 2B] [Table 2C] [Table 2D]

[0043] <Comparative Example 2>

[0044] The plastic composition of the second comparative example contains only a plasticizer, which is acetyl tributyl citrate. Refer to Table 3A for the components and their contents of the plastic composition of the second comparative example. [Table 3A]

[0045] Refer to Tables 3B, 3C, and 3D, which show the degradation rates of the second comparative example plastic composition at different time intervals. [Table 3B] [Table 3C] [Table 3D]

[0046] <First Example>

[0047] The plastic composition of the first example comprises a plastic and a plasticizer, wherein the plastic is polylactic acid and the plasticizer is 2-aminobenzoate-4-(2-aminobenzoyloxy)butyl. For details of 2-aminobenzoate-4-(2-aminobenzoyloxy)butyl, please refer to Table 4A. [Table 4A]

[0048] For the components and content of the plastic composition of the first example, please refer to Table 4B. [Table 4B]

[0049] Refer to Tables 4C, 4D, and 4E, which show the degradation rates of the plastic composition of the first example at different number of days. [Table 4C] [Table 4D] [Table 4E]

[0050] <Second Example>

[0051] The plastic composition of the second example contains only a plasticizer, which is 2-aminobenzoyloxy)butyl 2-aminobenzoate. Details of 2-aminobenzoyloxy)butyl 2-aminobenzoate are shown in Table 4A and will not be repeated here. For the components and content of the plastic composition of the second example, please refer to Table 5A. [Table 5A]

[0052] Refer to Tables 5B, 5C, and 5D, which show the degradation rates of the plastic composition of the second example at different number of days. [Table 5B] [Table 5C] [Table 5D]

[0053] <Third Example>

[0054] The plastic composition of the third example comprises a plastic and a plasticizer. The plastic is polylactic acid, and the plasticizer is 4-(2-aminobenzoyloxy)butyl 2-aminobenzoate. Details of 4-(2-aminobenzoyloxy)butyl 2-aminobenzoate are shown in Table 4A and will not be repeated here. Please refer to Table 6 for the components and content of the plastic composition of the third example. [Table 6]

[0055] <Fourth Example>

[0056] The plastic composition of the fourth example comprises a plastic and a plasticizer. The plastic is polylactic acid, and the plasticizer is 2-aminobenzoate-4-(2-aminobenzoyloxy)butyl. Details of 2-aminobenzoate-4-(2-aminobenzoyloxy)butyl are shown in Table 4A and will not be repeated here. Please refer to Table 7 for the components and content of the plastic composition of the fourth example. [Table 7]

[0057] <Example 5>

[0058] The plastic composition of the fifth example comprises a plastic and a plasticizer. The plastic is polylactic acid, and the plasticizer is 2-aminobenzoate-4-(2-aminobenzoyloxy)butyl. Details of 2-aminobenzoate-4-(2-aminobenzoyloxy)butyl are shown in Table 4A and will not be repeated here. For the components and content of the plastic composition of the fifth example, please refer to Table 8. [Table 8]

[0059] <Sixth Example>

[0060] The plastic composition of Example 6 comprises a plastic and a plasticizer. The plastic is polylactic acid, and the plasticizer is 4-(2-aminobenzoyloxy)butyl 2-aminobenzoate. Details of 4-(2-aminobenzoyloxy)butyl 2-aminobenzoate are shown in Table 4A and will not be repeated here. For the components and content of the plastic composition of Example 6, please refer to Table 9. [Table 9]

[0061] <Example 7>

[0062] The plastic composition of Example 7 comprises a plastic and a plasticizer. The plastic is polylactic acid, and the plasticizer is 4-(2-aminobenzoyloxy)butyl 2-aminobenzoate. Details of 4-(2-aminobenzoyloxy)butyl 2-aminobenzoate are shown in Table 4A and will not be repeated here. For the components and content of the plastic composition of Example 7, please refer to Table 10. [Table 10]

[0063] <Eighth Example>

[0064] The plastic composition of Example 8 comprises a plastic and a plasticizer. The plastic is polyethylene terephthalate-1,4-cyclohexanedimethanol, and the plasticizer is 2-aminobenzoate-4-(2-aminobenzoyloxy)butyl. Details of 2-aminobenzoate-4-(2-aminobenzoyloxy)butyl are shown in Table 4A and will not be repeated here. For the components and content of the plastic composition of Example 8, please refer to Table 11. [Table 11]

[0065] Although the embodiments described herein have been presented as described above, this disclosure is not intended to limit the scope of the disclosure. Those skilled in the art can make various changes and modifications as long as they do not deviate from the spirit and scope of the disclosure. Therefore, the scope of protection of the disclosure should be based on the definition in the claims.

Claims

1. At least one piece of plastic, A plasticizer that is biodegradable and has the structure shown in formula (I), A plastic composition containing, 【Chemistry 1】 In the formula, X is the central structure, The plasticizer is present in a weight percentage of 0.01% to 15% in the plastic composition. The aforementioned plastic is a biodegradable plastic. A plastic composition in which the number of carbon atoms X is XC, and the condition 3 ≤ XC ≤ 8 is satisfied.

2. The plastic composition according to claim 1, wherein the number of carbon atoms of X is XC, and the condition 4 ≤ XC ≤ 8 is satisfied.

3. The plastic composition according to claim 2, wherein X has a linear structure.

4. The plastic composition according to claim 2, wherein the molecular weight of the plasticizer is Mw, and the condition 300 g / mole ≤ Mw is satisfied.

5. The plastic composition according to claim 4, wherein the decomposition temperature of the plasticizer is Pt, and the condition 100°C ≤ Pt is satisfied.

6. The plastic composition according to claim 4, wherein the decomposition rate on day 63 is Dr63, and the decomposition rate of the plasticizer on day 63 satisfies the condition of 92% ≤ Dr63.

7. The plastic composition according to claim 1, wherein at least one of the plastics accounts for 85% to 99.99% by weight in the plastic composition.

8. The plastic composition according to claim 7, wherein the weight percentage of the plastic in the plastic composition is 94% to 99.99%, and the weight percentage of the plasticizer in the plastic composition is 0.01% to 6%.

9. The plastic composition according to claim 1, wherein the plastic is polylactic acid.

10. The plastic composition according to claim 1, further comprising at least one non-biodegradable plastic, wherein the weight percentage of the at least one non-biodegradable plastic in the plastic composition is less than the weight percentage of the biodegradable plastic in the plastic composition.

11. The plastic composition according to claim 7, wherein the decomposition rate on day 14 is Dr14, and the decomposition rate of the plastic composition on day 14 satisfies the condition of 1% ≤ Dr14.

12. The plastic composition according to claim 11, wherein the decomposition rate on day 21 is Dr21, and the decomposition rate of the plastic composition on day 21 satisfies the condition of 5% ≤ Dr21.

13. The plastic composition according to claim 12, wherein the decomposition rate on day 28 is Dr28, and the decomposition rate of the plastic composition on day 28 satisfies the condition of 10% ≤ Dr28.

14. The plastic composition according to claim 13, wherein the decomposition rate on day 42 is Dr42, and the decomposition rate of the plastic composition on day 42 satisfies the condition of 20% ≤ Dr42.

15. A plastic product comprising the plastic composition described in claim 1.

16. At least one piece of plastic, A biodegradable aminobenzoyl ester compound comprising at least one plasticizer having the structure shown in formula (I), A plastic composition containing, 【Chemistry 2】 In the formula, X is the central structure, and the central structure is a linear structure. The plastic composition is characterized in that the plastic accounts for 85% to 99.99% by weight, and the plasticizer accounts for 0.01% to 6% by weight.

17. The plastic composition according to claim 16, wherein the number of carbon atoms of X is XC, and the condition 1 ≤ XC ≤ 8 is satisfied.

18. The plastic composition according to claim 17, wherein the decomposition rate on day 14 is Dr14, and the decomposition rate of the plastic composition on day 14 satisfies the condition of 1% ≤ Dr14.

19. The plastic composition according to claim 17, wherein the decomposition rate on day 42 is Dr42, and the decomposition rate of the plastic composition on day 42 satisfies the condition of 20% ≤ Dr42.

20. A plastic product comprising the plastic composition described in claim 16.

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