Polymers, compositions, and products thereof

Abstract

The invention discloses a polymer, a composition and a product thereof, the polymer is a biodegradable polymer, and the composition monomers of the polymer comprise hydroxyethyl methylacrylate, lactide and caprolactone. Therefore, the polymer disclosed by the invention is based on the hydroxyethyl methylacrylate, and the hydroxyethyl methylacrylate, the lactide and the caprolactone are used as constituent monomers, so that the biodegradable polymer can be generated, the situation that waste is generated after a polymer finished product is discarded and accumulated in the environment is avoided, and the damage to the ecological environment is reduced.

Description

Technical Field

[0001] The present invention relates to a polymer, a composition and a product thereof, in particular to a polymer, a composition and a product thereof having biodegradable properties. Background Art

[0002] Poly(hydroxyethyl methacrylate) is widely used in various fields due to its high biocompatibility and high water content, such as viscose, sanitary products, facial masks, packaging materials, contact lenses and medical equipment. However, poly(hydroxyethyl methacrylate) is a non-biodegradable material and is often copolymerized with other non-biodegradable materials to form products. Its products are easily accumulated in the environment and damage the ecological environment due to improper handling. For example, hydroxyethyl methacrylate is copolymerized with methyl methacrylate and N-vinyl pyrrolidone to form soft contact lenses. Since the above three monomers are non-biodegradable before and after polymerization, soft contact lenses produce non-degradable waste after being discarded, which causes serious damage to the ecological environment. Although hydroxyethyl methacrylate, lactide and caprolactone are copolymerized to form novel medical materials, the molecular weight of the novel medical materials is too large, resulting in too high tensile values ​​and cannot meet the high softness requirements.

[0003] Since the materials developed currently still cannot meet the usage needs, it is necessary to actively develop small molecule biodegradable materials. Summary of the invention

[0004] The present invention provides a polymer based on hydroxyethyl methacrylate, which uses hydroxyethyl methacrylate, lactide and caprolactone as constituent monomers to produce a biodegradable polymer, thereby preventing the polymer from generating waste and accumulating in the environment after the finished product is discarded, thereby helping to reduce damage to the ecological environment. Furthermore, the polymer of the present invention is designed with a smaller average molecular weight of the polymer, so that the tensile value of the polymer is smaller, which helps to improve the softness of the polymer. Furthermore, by limiting the time required for the polymer to reach a 1% decomposition rate, the rapid decomposition of the polymer can be ensured, and by satisfying the decomposition rate of the polymer on the 7th day, it helps to improve the initial decomposition effect of the polymer.

[0005] According to the present invention, a polymer is provided, which is a biodegradable polymer, and the constituent monomers of the polymer include hydroxyethyl methacrylate, lactide and caprolactone. The average molecular weight of the polymer is Mw, and the decomposition rate of the polymer on the 7th day is Dr7, which satisfies the following conditions: Mw≤50000 g / mole; and 5%≤Dr7.

[0006] According to the present invention there is provided a composition comprising a polymer as described in the preceding paragraph.

[0007] According to the present invention there is provided a product comprising the composition as described in the preceding paragraph.

[0008] According to the present invention, a polymer is further provided, which is a biodegradable polymer, wherein the constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The monomer ratio of hydroxyethyl methacrylate in the polymer is less than the monomer ratio of lactide in the polymer or the monomer ratio of caprolactone in the polymer. The average molecular weight of the polymer is Mw, and the time required for the polymer to reach a 1% decomposition rate is TDr1p, which satisfies the following conditions: Mw≤50000 g / mole; and TDr1p≤7 days.

[0009] According to the present invention there is provided a composition comprising a polymer as described in the preceding paragraph.

[0010] According to the present invention there is provided a product comprising the composition as described in the preceding paragraph. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to make the above and other objects, features, advantages and embodiments of the present invention more clearly understood, the accompanying drawings are described as follows:

[0012] Figure 1 A graph showing the relationship between the biodegradation rate of the polymer of the first embodiment and time; and

[0013] Figure 2 A graph showing the relationship between the biodegradation rate of the polymer of the second embodiment and time is shown. DETAILED DESCRIPTION

[0014] One embodiment of one aspect of the present invention provides a polymer, which is a biodegradable polymer, wherein the constituent monomers of the polymer include 2-Hydroxyethyl methacrylate (HEMA), lactide, and caprolactone. Thus, the present invention provides a polymer based on 2-Hydroxyethyl methacrylate, which can produce a biodegradable polymer by using 2-Hydroxyethyl methacrylate, lactide, and caprolactone as constituent monomers, thereby preventing the polymer product from generating waste and accumulating in the environment after being discarded, thereby helping to reduce damage to the ecological environment.

[0015] Another embodiment of one aspect of the present invention provides a polymer, which is a biodegradable polymer, wherein the constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The monomer ratio of hydroxyethyl methacrylate in the polymer is less than the monomer ratio of lactide in the polymer or the monomer ratio of caprolactone in the polymer. Thus, the present invention provides a polymer based on hydroxyethyl methacrylate, which can produce a biodegradable polymer by using hydroxyethyl methacrylate and at least one of lactide and caprolactone as constituent monomers, thereby avoiding the generation of waste and accumulation in the environment after the polymer product is discarded, and helping to reduce damage to the ecological environment.

[0016] The average molecular weight of the polymer is Mw, which may satisfy the following conditions: Mw≤50000 g / mole. By designing a smaller average molecular weight of the polymer, the tensile value of the polymer is smaller, which helps to improve the softness of the polymer. Alternatively, it may satisfy the following conditions: Mw<100000 g / mole. Alternatively, it may satisfy the following conditions: 100 g / mole≤Mw≤80000 g / mole. Alternatively, it may satisfy the following conditions: 300 g / mole≤Mw≤50000 g / mole. Alternatively, it may satisfy the following conditions: 500 g / mole≤Mw≤30000 g / mole. Alternatively, it may satisfy the following conditions: 1000 g / mole≤Mw≤20000 g / mole. Alternatively, it may satisfy the following conditions: 4000 g / mole≤Mw≤10000 g / mole. Alternatively, it may satisfy the following conditions: 3000 g / mole≤Mw≤5000 g / mole. Alternatively, it may satisfy the following condition: 300 g / mole ≤ Mw. By designing a specific lower limit of the average molecular weight of the polymer, the polymer can be prevented from passing through the cell membrane, which helps to improve the biosafety of the polymer.

[0017] The decomposition rate of the polymer on the 7th day is Dr7, which may satisfy the following conditions: 5% ≤ Dr7. By satisfying the decomposition rate of the polymer on the 7th day, it is helpful to improve the initial decomposition effect of the polymer. Alternatively, it may satisfy the following conditions: 10% ≤ Dr7 ≤ 100%. Alternatively, it may satisfy the following conditions: 15% ≤ Dr7 ≤ 90%. Alternatively, it may satisfy the following conditions: 20% ≤ Dr7 ≤ 80%. Alternatively, it may satisfy the following conditions: 25% ≤ Dr7 ≤ 70%. Alternatively, it may satisfy the following conditions: 30% ≤ Dr7 ≤ 60%. Alternatively, it may satisfy the following conditions: 33% ≤ Dr7 ≤ 50%.

[0018] The time required for the polymer to reach a 1% decomposition rate is TDr1p, which can satisfy the following condition: TDr1p ≤ 7 days. By restricting the time required for the polymer to reach a 1% decomposition rate, rapid polymer decomposition can be ensured. Alternatively, it can satisfy the following condition: TDr1p ≤ 6 days. Alternatively, it can satisfy the following condition: TDr1p ≤ 5 days. Alternatively, it can satisfy the following condition: TDr1p ≤ 4 days. Alternatively, it can satisfy the following condition: TDr1p ≤ 3 days. Alternatively, it can satisfy the following condition: TDr1p ≤ 2 days. Alternatively, it can satisfy the following condition: 0 days < TDr1p ≤ 1 day.

[0019] The constituent monomers of the polymer can be selected from the group consisting of hydroxyethyl methacrylate, lactide, and caprolactone. Alternatively, the constituent monomers of the polymer can consist of hydroxyethyl methacrylate and at least one of lactide and caprolactone. By designing a polymer consisting only of hydroxyethyl methacrylate, lactide, and caprolactone, it helps to maximize the decomposition rate of the polymer.

[0020] The cracking temperature of the polymer is Pt, which can satisfy the following condition: 100°C ≤ Pt. By meeting the cracking temperature of the polymer, it helps to ensure the structural stability of the polymer at high temperatures. Alternatively, it can satisfy the following condition: 120°C ≤ Pt ≤ 1000°C. Alternatively, it can satisfy the following condition: 150°C ≤ Pt ≤ 800°C. Alternatively, it can satisfy the following condition: 180°C ≤ Pt ≤ 500°C. Alternatively, it can satisfy the following condition: 200°C ≤ Pt ≤ 300°C. Alternatively, it can satisfy the following condition: 220°C ≤ Pt ≤ 280°C. Alternatively, it can satisfy the following condition: 240°C ≤ Pt ≤ 260°C. Alternatively, it can satisfy the following condition: 225°C ≤ Pt ≤ 250°C. Alternatively, it can satisfy the following condition: 200°C ≤ Pt.

[0021] The viscosity of the polymer is Vi, which can satisfy the following condition: 1000 cP ≤ Vi. By meeting the viscosity of the polymer, it ensures that the polymer has low fluidity and helps with the setting of the polymer. Alternatively, it can satisfy the following condition: 2000 cP ≤ Vi. Alternatively, it can satisfy the following condition: 3000 cP ≤ Vi. Alternatively, it can satisfy the following condition: 5000 cP ≤ Vi. Alternatively, it can satisfy the following condition: 10000 cP ≤ Vi ≤ 15000 cP. Alternatively, it can satisfy the following condition: 12000 cP ≤ Vi ≤ 13000 cP.

[0022] The dissolution rate of the polymer in water is Sw, which can meet the following conditions: Sw ≤ 5.00%. By restricting the dissolution rate of the polymer in water, the polymer can be prevented from failing due to moisture absorption or splashing water, which helps to improve the waterproof property of the polymer. Or, it can meet the following conditions: Sw ≤ 3.00%. Or, it can meet the following conditions: Sw ≤ 1.00%. Or, it can meet the following conditions: Sw ≤ 0.50%. Or, it can meet the following conditions: Sw ≤ 0.30%. Or, it can meet the following conditions: 0% ≤ Sw ≤ 0.10%.

[0023] The molecular particle size of the polymer is Sp, which can meet the following conditions: Sp ≤ 30 μm. By restricting the molecular particle size of the polymer, the polymer molecules are evenly dispersed on average, which helps to improve the setting uniformity of the polymer. Or, it can meet the following conditions: Sp ≤ 60 μm. Or, it can meet the following conditions: Sp ≤ 50 μm. Or, it can meet the following conditions: 0 μm < Sp ≤ 30 μm. Or, it can meet the following conditions: 5 μm ≤ Sp ≤ 20 μm. Or, it can meet the following conditions: 10 μm ≤ Sp ≤ 15 μm.

[0024] The cracking temperature of the polymer after curing is PtC, which can meet the following conditions: 100°C ≤ PtC. By meeting the cracking temperature of the polymer after curing, it helps to stabilize the structure of the polymer product at high temperatures. Or, it can meet the following conditions: 120°C ≤ PtC ≤ 1000°C. Or, it can meet the following conditions: 150°C ≤ PtC ≤ 800°C. Or, it can meet the following conditions: 180°C ≤ PtC ≤ 500°C. Or, it can meet the following conditions: 200°C ≤ PtC ≤ 300°C. Or, it can meet the following conditions: 220°C ≤ PtC ≤ 280°C. Or, it can meet the following conditions: 240°C ≤ PtC ≤ 260°C. Or, it can meet the following conditions: 200°C ≤ PtC.

[0025] The decomposition rate of the polymer on the 28th day is Dr28, which can meet the following conditions: 10% ≤ Dr28. By meeting the decomposition rate of the polymer on the 28th day, it helps to improve the short-term decomposition effect of the polymer. Or, it can meet the following conditions: 20% ≤ Dr28. Or, it can meet the following conditions: 30% ≤ Dr28 ≤ 100%. Or, it can meet the following conditions: 40% ≤ Dr28 ≤ 90%. Or, it can meet the following conditions: 50% ≤ Dr28 ≤ 80%. Or, it can meet the following conditions: 60% ≤ Dr28 ≤ 70%.

[0026] The decomposition rate of the polymer on the 56th day is Dr56, which can meet the following conditions: 20% ≤ Dr56. By meeting the decomposition rate of the polymer on the 56th day, it helps to improve the medium-term decomposition effect of the polymer. Or, it can meet the following conditions: 25% ≤ Dr56. Or, it can meet the following conditions: 35% ≤ Dr56 ≤ 100%. Or, it can meet the following conditions: 45% ≤ Dr56 ≤ 90%. Or, it can meet the following conditions: 55% ≤ Dr56 ≤ 80%. Or, it can meet the following conditions: 65% ≤ Dr56 ≤ 70%.

[0027] The decomposition rate of the polymer on the 99th day is Dr99, which can meet the following conditions: 20% ≤ Dr99. By meeting the decomposition rate of the polymer on the 99th day, it helps to improve the long-term decomposition effect of the polymer. Or, it can meet the following conditions: 25% ≤ Dr99. Or, it can meet the following conditions: 35% ≤ Dr99 ≤ 100%. Or, it can meet the following conditions: 45% ≤ Dr99 ≤ 90%. Or, it can meet the following conditions: 55% ≤ Dr99 ≤ 80%. Or, it can meet the following conditions: 60% ≤ Dr99 ≤ 70%.

[0028] The time required for the polymer to reach a 50% decomposition rate is TDr50p, which can meet the following conditions: TDr50p ≤ 30 days. By restricting the time required for the polymer to reach a 50% decomposition rate, it helps to improve the decomposition efficiency of the polymer. Or, it can meet the following conditions: 0 days < TDr50p ≤ 30 days. Or, it can meet the following conditions: 1 day ≤ TDr50p ≤ 28 days. Or, it can meet the following conditions: 2 days ≤ TDr50p ≤ 25 days. Or, it can meet the following conditions: 3 days ≤ TDr50p ≤ 22 days. Or, it can meet the following conditions: 5 days ≤ TDr50p ≤ 20 days. Or, it can meet the following conditions: 8 days ≤ TDr50p ≤ 18 days.

[0029] The structural formula representative diagram of the polymer described in the present invention may have a structure shown in Formula (I) or a structure shown in Formula (II):

[0030]

[0031] In the structural formula representative diagram of the polymer described in the present invention, the partial structure within the left parentheses of m and n means that this partial structure in the polymer will be repeated multiple times. m and n represent the number of repetitions and m and n are positive integers. Furthermore, the structural formula representative diagram only represents the possible bonding of the polymer, and the product structures in the same polymerization reaction are not completely the same. The actual structure of the polymer may also be different from the structural formula representative diagram.

[0032] The constituent monomers of the polymer described in the present invention may include hydroxyethyl methacrylate, lactide and caprolactone, and the ratio of the monomer proportions of hydroxyethyl methacrylate, lactide and caprolactone in the polymer may be 1:2-7:2-5; for example, the monomer proportion of hydroxyethyl methacrylate in the polymer is less than the monomer proportions of lactide in the polymer and the monomer proportions of caprolactone in the polymer, and the ratios of the monomer proportions of hydroxyethyl methacrylate in the polymer, the monomer proportions of lactide in the polymer and the monomer proportions of caprolactone in the polymer may be 1:2:2, 1:2:3, 1:3:3, 1:4:3, 1:4:4, 1:5:4, 1:5:5, 1:6:5 or 1:7:5, and the ratios between the monomers may also be non-integers. The ratio of the monomer ratio of hydroxyethyl methacrylate in the polymer to the monomer ratio of lactide in the polymer may be 1:1 to 1:100; for example, the ratio of the monomer ratio of hydroxyethyl methacrylate in the polymer to the monomer ratio of lactide in the polymer may be 1:1, 1:2, 1:5, 1:10, 1:20, 1:30, 1:50, 1:70, 1:75 or 1:100, and the ratio between the monomers may also be a non-integer. The ratio of the monomer ratio of hydroxyethyl methacrylate in the polymer to the monomer ratio of caprolactone in the polymer may be 1:1 to 1:100; for example, the ratio of the monomer ratio of hydroxyethyl methacrylate in the polymer to the monomer ratio of caprolactone in the polymer may be 1:1, 1:2, 1:5, 1:10, 1:20, 1:30, 1:50, 1:70, 1:75 or 1:100, and the ratio between the monomers may also be a non-integer, but is not limited thereto. The polymerization catalyst of the above-mentioned polymer can be tin(II)2-ethylhexanoate (Sn(Oct) 2 Tin(II) chloride, SnCl 2 ), Tin(II) sulfate (SnSO 4 ), dibutyltin oxide (DBTO) or dibutyltin dilaurate (DBTL), the addition ratio of hydroxyethyl methacrylate to the catalyst during polymerization is 1:0.001 to 1:1000, but not limited thereto.

[0033] The polymer described in the present invention is a curable polymer, which has a photocurable property or a heat-curable property. The photocurable property means that the polymer is gradually solidified by light (such as ultraviolet light, visible light, blue light, green light or red light), and the light exposure time will affect the degree of solidification of the polymer, so the polymer can be a viscous fluid, a colloid or a solid after light exposure. The heat-curable property means that the polymer is gradually solidified by heating, and the heating time will affect the degree of solidification of the polymer, so the polymer can be a viscous fluid, a colloid or a solid after heating. In addition, if the polymer described in the present invention does not clearly indicate whether it has been cured, it usually refers to the polymer before curing.

[0034] The average molecular weight of the polymer described in the present invention refers to the number average molecular weight of the entire polymer molecules during the test, and its calculation formula is: (Σmolecular weight) / total number of molecules.

[0035] The pyrolysis temperature of the polymer described in the present invention refers to the temperature at which the polymer begins to undergo thermal pyrolysis.

[0036] The viscosity of the polymer described in the present invention refers to the viscosity of the polymer, which can represent the fluidity of the polymer, and the measurement conditions are a temperature of 25° C. and a humidity of 50%.

[0037] The solubility rate of the polymer in water described in the present invention refers to the solubility rate of the polymer with water as solvent. A very small amount of polymer is slowly added into water as solute until the polymer cannot be dissolved. The measurement conditions are temperature of 25° C. and humidity of 50%.

[0038] The molecular particle size of the polymer described in the present invention refers to the median of the molecular diameters of the entire polymer molecules.

[0039] The polymer described in the present invention may be a biodegradable polymer. The biodegradable property of the polymer means that the polymer can be gradually decomposed by microorganisms in a specific environment.

[0040] The decomposition rate of the polymer described in the present invention refers to the result obtained by the standard determination method of ASTM-D5338, and the decomposition percentage rate is calculated by weight. The test object and activated sludge (fertilizer) are mixed with each other at a weight ratio of 1:6, and the moisture content in the degradation tank is maintained at about 50% with perlite. The degradation tank is placed at 58±2℃ and continuously observed for 180 days. The main components of the compost include poultry and livestock manure, soybean powder, bagasse, sawdust, wheat bran, and mushroom waste bags, and the perlite components are shown in Table 1 below:

[0041]

[0042] During the test monitoring process, a fresh 0.1M KOH aqueous solution was prepared and dispensed into 50mL PP cans, which were placed in the degradation tanks. The degradation tanks were then incubated in a constant temperature box (58±2℃). The KOH aqueous solution absorbed the CO released during the decomposition of the degradation products. 2 The KOH is replaced 6 times / week in the initial degradation period (1-30 days) of the test, and then changed to 2 times / week after one month until 180 days are met. In addition, the total test time can also be greater than 180 days. The collected KOH is measured with a pH meter and its value is compared with the control group (0.1M KOH aqueous solution placed in a thermostat without degradation reaction) to convert the hydrogen ion concentration, and then the hydrogen ion concentration is converted into CO 2 The above mentioned conversion formula is as follows: Change in hydroxyl concentration = hydroxyl concentration of control group - hydroxyl concentration of experimental group = hydrogen ion concentration; Carbon dioxide weight (unit: mg) = hydrogen ion concentration × 44 / 2 × 50mL (44 is the molecular weight of carbon dioxide, 2 is the equilibrium coefficient of carbon dioxide reaction, and 50mL is the volume of aqueous solution); Inorganization (decomposition) percentage = Carbon dioxide weight change / theoretical carbon dioxide content of the composition after complete decomposition × 100%.

[0043] The decomposition rate of the polymer on the nth day of the present invention refers to the decomposition rate of the polymer on the nth day measured by ASTM-D5338 as the standard method, and the nth day can be the 7th day, the 8th day, the 9th day, the 10th day, the 14th day, the 21st day, the 24th day, the 25th day, the 26th day, the 28th day, the 29th day, the 30th day, the 31st day, the 35th day, the 42nd day, the 49th day, the 52nd day, the 53rd day, the 54th day, the 55th day, the 56th day, the 57th day, the 58th day, the 59th day, the 60th day, the 61st day, the 62nd day, the 63rd day, the 64th day, the The decomposition rate may be the decomposition rate on 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 105, day 140, day 150, day 154, day 157, day 175, day 178 or day 180, or may be the decomposition rate on any day from day 1 to day 180. For example, Dr28 is the decomposition rate of the polymer on day 28, which may be defined in another way according to the above rules, Dr21 represents the decomposition rate of the polymer on day 21, and so on, but is not limited thereto.

[0044] The pyrolysis temperature of the polymer described in the present invention after curing is as follows: the polymer is placed at the bottom of a sealed box at room temperature, and is cured by irradiation with light from the top of the sealed box for 5 minutes. If a solid state is not formed, the irradiation time is increased by 1 minute each time until it is cured. If the polymer cannot be cured after 10 minutes of light irradiation, a curing initiator OX101 with a final concentration of 0.1% is added to the polymer, and light is irradiated for 10 seconds each time until it is cured. The lamp used for curing is a 9-watt UV ultraviolet lamp from Crystal Fish LED Studio, and its model is UV-015-09W-365N. The size of the sealed box at room temperature is 88.4cm (length) × 70.2cm (width) × 76.4cm (height).

[0045] The various technical features of the polymer of the present invention can be configured in combination to achieve corresponding effects.

[0046] Another embodiment of the present invention provides a composition comprising the aforementioned polymer.

[0047] The composition of the present invention may be a substrate, a curing material, an adhesive material, a repair material, a coating material, a packaging material and a packaging material, but is not limited thereto. The coating material includes an adhesive, an adhesive, a glue, a curing glue and an oxidized glue. The coating material may be viscous, or produce a film layer by light hardening, or may bond the substance, component or object contacted by the coating material by light. The coating material may be used for electronic products, packaging, clothing, containers and various assembled products, but is not limited thereto.

[0048] Another embodiment of the present invention provides a product comprising the aforementioned composition.

[0049] The products described in the present invention may be daily clothing, medical equipment, electronic devices and electronic equipment, means of transportation, furniture and household appliances, tableware, containers and disposable products, etc. Daily clothing may be clothes, pants, coats, jackets, underwear, socks, shoes, hats, scarves. Medical equipment may be dental filling materials, biological tissue scaffolds, biological tissue fillers, biological sutures, surgical sutures, surgical needles, surgical membranes, tissue adhesive patches, tissue adhesive glue, tissue adhesive tape, bone plates, bone nails, tissue suture nails, biological suture anchors and other therapeutic equipment. Medical equipment may also be artificial tissues or artificial organs such as biological skeletons, artificial blood vessels, artificial cardiac catheters, artificial ligaments, artificial cartilage, etc., but not limited to this. Electronic devices and electronic equipment may be mobile phones, smart bracelets, watches, cameras, laptops, desktop computer hosts, screens, mice, keyboards, batteries, clothing, but not limited to this. Means of transportation are bicycles, motorcycles, cars, buses, trains, high-speed railways, airplanes, and ships, but not limited to this. Furniture and household appliances may be tables, chairs, sofas, beds, televisions, air conditioners, refrigerators, air conditioners, microwave ovens, electric fans, induction cookers, etc., but are not limited thereto. Tableware may be knives, forks, chopsticks, bowls, plates, pots, straws, etc., but are not limited thereto. Containers may be bottles, bags, boxes, cases, cups, bowls, backpacks, handbags, etc., but are not limited thereto. Disposable products may be packaging films, composite paper, containers or storage containers, tableware, food packaging, strapping tape, rope, wrapping film, agricultural seedling cups and plates, mushroom space bags, fertilizer bags, agricultural tape or drawstrings, agricultural paving or covering materials, agricultural plug trays, fruit and vegetable bags, agricultural bed covering films, drug carriers, inorganic mixtures, biological experiment culture dishes, biological experiment containers, biological experiment micropipette, biological experiment centrifuge tubes or experimental gloves, but are not limited thereto.

[0050] According to the above implementation mode, specific examples are presented below for detailed description.

[0051] <First Embodiment>

[0052] The polymer of the first embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate, lactide and caprolactone. The polymer of the first embodiment has a structure as shown in the above formula (I).

[0053] Please refer to Table 2A and Figure 1 , wherein Table 2A presents the biodegradability values ​​of the polymer of the first embodiment at different days, and Figure 1 A graph showing the relationship between the biodegradation rate of the polymer of the first embodiment and time is shown.

[0054]

[0055]

[0056] The constituent monomers of the polymer of the first embodiment and the properties of the polymer are listed in Table 2B, wherein the average molecular weight of the polymer is Mw, the pyrolysis temperature of the polymer is Pt, the viscosity of the polymer is Vi, the solubility of the polymer in water is Sw, the molecular particle size of the polymer is Sp, the pyrolysis temperature of the polymer after curing is PtC, the decomposition rate of the polymer on the 7th day is Dr7, the decomposition rate of the polymer on the 28th day is Dr28, the decomposition rate of the polymer on the 56th day is Dr56, the decomposition rate of the polymer on the 99th day is Dr99, the time required for the polymer to reach 1% decomposition rate is TDr1p, and the time required for the polymer to reach 50% decomposition rate is TDr50p.

[0057]

[0058] The parameter definitions of the following embodiments are the same as those in Table 2B of the first embodiment, and will not be described in detail later.

[0059] <Second Embodiment>

[0060] The polymer of the second embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate, lactide and caprolactone. The polymer of the second embodiment has a structure as shown in the above formula (I).

[0061] Please refer to Table 3A and Figure 2 , wherein Table 3A presents the biodegradability values ​​of the polymer of the second embodiment at different days, and Figure 2 A graph showing the relationship between the biodegradation rate of the polymer of the second embodiment and time is shown.

[0062]

[0063]

[0064] The constituent monomers and properties of the polymer of the second example are listed in Table 3B.

[0065]

[0066]

[0067] <Third Embodiment>

[0068] The polymer of the third embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate, lactide and caprolactone. The polymer of the third embodiment has a structure as shown in the above formula (I).

[0069] Please refer to Table 4, which shows the constituent monomers and properties of the polymer of the third embodiment.

[0070]

[0071]

[0072] <Fourth Embodiment>

[0073] The polymer of the fourth embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate, lactide and caprolactone. The polymer of the fourth embodiment has a structure as shown in the above formula (I).

[0074] Please refer to Table 5, which shows the constituent monomers and properties of the polymer of the fourth embodiment.

[0075]

[0076] <Fifth Embodiment>

[0077] The polymer of the fifth embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The polymer of the fifth embodiment has a structure as shown in the above formula (II).

[0078] Please refer to Table 6, which shows the constituent monomers and properties of the polymer of the fifth embodiment.

[0079]

[0080] <Sixth Embodiment>

[0081] The polymer of the sixth embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The polymer of the sixth embodiment has a structure as shown in the above formula (II).

[0082] Please refer to Table 7, which shows the constituent monomers and properties of the polymer of the sixth embodiment.

[0083]

[0084]

[0085] <Seventh Embodiment>

[0086] The polymer of the seventh embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The polymer of the seventh embodiment has a structure as shown in the above formula (II).

[0087] Please refer to Table 8, which shows the constituent monomers and properties of the polymer of the seventh embodiment.

[0088]

[0089]

[0090] <Eighth Embodiment>

[0091] The polymer of the eighth embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The polymer of the eighth embodiment has a structure as shown in the above formula (II).

[0092] Please refer to Table 9, which shows the constituent monomers and properties of the polymer of the eighth embodiment.

[0093]

[0094]

[0095] <Ninth Embodiment>

[0096] The polymer of the ninth embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The polymer of the ninth embodiment has a structure as shown in the above formula (II).

[0097] Please refer to Table 10, which shows the constituent monomers and properties of the polymer of the ninth example.

[0098]

[0099] <Tenth Embodiment>

[0100] The polymer of the tenth embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The polymer of the tenth embodiment has a structure as shown in the above formula (II).

[0101] Please refer to Table 11, which shows the constituent monomers and properties of the polymer of the tenth embodiment.

[0102]

[0103] <Eleventh Embodiment>

[0104] The polymer of the eleventh embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The polymer of the eleventh embodiment has a structure as shown in the above formula (II).

[0105] Please refer to Table 12, which shows the constituent monomers and properties of the polymer of the eleventh embodiment.

[0106]

[0107]

[0108] <Twelfth Embodiment>

[0109] The polymer of the twelfth embodiment is a biodegradable polymer. The constituent monomers of the polymer include hydroxyethyl methacrylate and at least one of lactide and caprolactone. The polymer of the twelfth embodiment has a structure as shown in the above formula (II).

[0110] Please refer to Table 13, which shows the constituent monomers and properties of the polymer of the twelfth embodiment.

[0111]

[0112]

[0113] Although the present invention has been disclosed as above in the form of implementation modes, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the attached claims.

[0114]

Explanation of symbols

[0115] Mw: average molecular weight of the polymer;

[0116] Pt: pyrolysis temperature of the polymer;

[0117] PtC: the pyrolysis temperature of the polymer after curing;

[0118] Vi: viscosity of the polymer;

[0119] Sw: solubility rate of polymer in water;

[0120] Sp: molecular particle size of polymer;

[0121] Dr7: polymer decomposition rate on the 7th day;

[0122] Dr28: polymer decomposition rate on day 28;

[0123] Dr56: polymer decomposition rate on day 56;

[0124] Dr99: polymer decomposition rate on day 99;

[0125] TDr1p: time required for the polymer to reach 1% decomposition rate;

[0126] TDr50p: The time required for the polymer to reach 50% decomposition rate.

Claims

1. A polymer, which is a biodegradable polymer, characterized in that: The constituent monomers of the polymer include hydroxyethyl methacrylate, lactide and caprolactone; Wherein, the average molecular weight of the polymer is Mw, and the decomposition rate of the polymer on the 7th day is Dr7, which satisfies the following conditions: Mw ≤ 50,000 g / mole; and 5％≤Dr7。 2. The polymer according to claim 1, characterized in that The monomers constituting the polymer are selected from the group consisting of hydroxyethyl methacrylate, lactide and caprolactone.

3. The polymer according to claim 1, characterized in that The average molecular weight of the polymer is Mw, which satisfies the following conditions: 300g / mole≤Mw.

4. The polymer according to claim 1, characterized in that The pyrolysis temperature of the polymer is Pt, which satisfies the following conditions: 100℃≤Pt.

5. The polymer according to claim 1, characterized in that The viscosity of the polymer is Vi, which satisfies the following conditions: 1000cP≤Vi.

6. The polymer according to claim 1, characterized in that The solubility of the polymer in water is Sw, which satisfies the following conditions: Sw≤5.00%.

7. The polymer according to claim 1, characterized in that The molecular particle size of the polymer is Sp, which satisfies the following conditions: Sp≤30μm.

8. The polymer according to claim 1, characterized in that The pyrolysis temperature of the polymer after curing is PtC, which satisfies the following conditions: 100℃≤PtC.

9. The polymer according to claim 1, characterized in that The decomposition rate of the polymer on the 28th day is Dr28, which meets the following conditions: 10％≤Dr28。 10. The polymer according to claim 1, characterized in that The time required for the polymer to reach 1% decomposition rate is TDr1p, which satisfies the following conditions: TDr1p≤7 days.

11. The polymer according to claim 1, characterized in that The time required for the polymer to reach 50% decomposition rate is TDr50p, which meets the following conditions: TDr50p≤30 days.

12. A composition, characterized in that Include: The polymer according to claim 1.

13. A product, characterized in that Include: The composition of claim 12.

14. A polymer, which is a biodegradable polymer, characterized in that: The monomers constituting the polymer include: Hydroxyethyl methacrylate; and At least one of lactide and caprolactone; wherein the monomer ratio of the hydroxyethyl methacrylate in the polymer is less than the monomer ratio of the lactide in the polymer or the monomer ratio of the caprolactone in the polymer; Wherein, the average molecular weight of the polymer is Mw, and the time required for the polymer to reach 1% decomposition rate is TDr1p, which satisfies the following conditions: Mw ≤ 50,000 g / mole; and TDr1p≤7 days.

15. The polymer according to claim 14, characterized in that The constituent monomers of the polymer are composed of hydroxyethyl methacrylate and at least one of lactide and caprolactone.

16. The polymer according to claim 14, characterized in that The average molecular weight of the polymer is Mw, which satisfies the following conditions: 300g / mole≤Mw.

17. The polymer according to claim 16, characterized in that The pyrolysis temperature of the polymer is Pt, which satisfies the following conditions: 100℃≤Pt.

18. The polymer according to claim 17, characterized in that The viscosity of the polymer is Vi, which satisfies the following conditions: 1000cP≤Vi.

19. The polymer according to claim 18, characterized in that The solubility of the polymer in water is Sw, which satisfies the following conditions: Sw≤5.00%.

20. The polymer according to claim 19, characterized in that The molecular particle size of the polymer is Sp, which satisfies the following conditions: Sp≤50μm.

21. The polymer according to claim 20, characterized in that The pyrolysis temperature of the polymer after curing is PtC, which satisfies the following conditions: 100℃≤PtC.

22. The polymer according to claim 14, characterized in that The decomposition rate of the polymer on the 7th day is Dr7, which meets the following conditions: 5％≤Dr7。 23. The polymer according to claim 22, characterized in that The decomposition rate of the polymer on the 28th day is Dr28, which meets the following conditions: 10％≤Dr28。 24. The polymer according to claim 14, characterized in that The time required for the polymer to reach 50% decomposition rate is TDr50p, which meets the following conditions: TDr50p≤30 days.

25. The polymer of claim 14, wherein The average molecular weight of the polymer is Mw, the decomposition rate of the polymer on the 7th day is Dr7, the decomposition rate of the polymer on the 28th day is Dr28, the pyrolysis temperature of the polymer is Pt, the solubility rate of the polymer in water is Sw, and the pyrolysis temperature of the polymer after curing is PtC, which meets the following conditions: 500g / mole≤Mw≤10000g / mole; 20％≤Dr7≤80％； 30％≤Dr28≤100％； 200℃≤Pt; Sw≤0.50%; and 200℃≤PtC.

26. A composition, characterized in that Include: The polymer of claim 14.

27. A product, characterized in that Include: The composition of claim 26.

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