DCPD resin and antioxidant for DCPD hydrogenated resin

Abstract

The invention relates to the technical field of antioxidants, in particular to a DCPD resin and an antioxidant for a DCPD hydrogenated resin. The antioxidant for the DCPD resin and the DCPD hydrogenated resin comprises the following components in percentage by mass: 20-50% of a main antioxidant, 20-50% of an auxiliary antioxidant, 1-5% of a coupling agent and 1-5% of a coupling agent. 10 to 30% of a phosphite ester auxiliary antioxidant; 10 to 30% of a thioether auxiliary antioxidant; 5-15% of a carbon radical scavenger; and 0-15% of a metal ion passivator. Wherein the main antioxidant is a phenolic antioxidant and is specifically prepared from Irganox 1010, Irganox 1330 and Irganox 3114 according to the mass percent of 55%: 20%: 25%, the phosphite ester auxiliary antioxidant is prepared from Irgafos 168, Ultratranox 626 and Weston 705 according to the mass percent of 37%: 44%: 19%, the thioether auxiliary antioxidant is Naugard 412S, and the carbon free radical trapping agent is prepared from Irganox HP 136 and Sumilizer GM according to the mass percent of 23%: 77%. The product shows a significant synergistic effect in DCPD resin and hydrogenated resin, effectively resists the invasion of environmental factors, prolongs the thermal stability period, and reduces aging and yellowing.

Description

Technical Field

[0001] The present application relates to the technical field of antioxidants, and in particular to an antioxidant for DCPD resin and DCPD hydrogenated resin. Background Art

[0002] DCPD hydrogenated resin, also known as DCPD hydrogenated resin, is a high-performance thermoplastic resin. DCPD hydrogenated resin is widely used in many fields due to its excellent performance. For example, in tire manufacturing, it can be used as a tackifier and reinforcing agent to improve the wear resistance and tear resistance of tires; in printing inks, it can be used as a binder and thickener to improve the gloss and adhesion of inks; in food packaging, it can be used as an additive for packaging materials to improve the barrier properties and weather resistance of packaging materials; in addition, it can also be used in pressure-sensitive tapes, diapers, sanitary napkins, rubber, adhesives, high-grade coatings, hot melt adhesives and other products.

[0003] In recent years, with the global economic recovery and the acceleration of industrialization, the market demand for DCPD resin and DCPD hydrogenated resin has continued to grow. They can be used in hot melt adhesive products and have good bonding properties. In hot melt adhesive products, DCPD hydrogenated resin molecular chains contain a large number of tertiary carbon hydrogen atoms and a small amount of unhydrogenated carbon-carbon double bonds. When DCPD hydrogenated resin is exposed to heat, oxygen, light, shear, high-energy rays and other environments, tertiary carbon hydrogen atoms and carbon-carbon double bonds are easily oxidized, causing the resin to age and turn yellow. Incomplete structures, catalyst residues and impurities that cannot be removed in the resin will also promote the aging of DCPD resin and hydrogenated resin. Therefore, antioxidants are often added to improve this situation. However, using a single antioxidant to improve the heat resistance of DCPD hydrogenated resin does not actually achieve good results. Currently, different antioxidants are mostly used for compounding. However, there are large differences between different antioxidants. Some antioxidants may produce synergistic effects after compounding, but may also cause some negative effects, such as affecting the processing properties of the resin, causing color changes or producing bad odors; while others may interfere with each other, resulting in weakened or even ineffective protective effects. Summary of the invention

[0004] In order to solve the above-mentioned problems, the present application hereby provides an antioxidant for DCPD resin and DCPD hydrogenated resin, aiming to significantly extend the thermal stability period of the resin, reduce the occurrence of aging and yellowing, and minimize the impact on the processing performance of DCPD resin and hydrogenated resin, avoid color changes and the generation of bad odors, and ensure the quality and stability of the resin products.

[0005] The antioxidant for DCPD resin and hydrogenated DCPD resin provided by this application adopts the following technical solution: An antioxidant for DCPD resin and hydrogenated DCPD resin, calculated by mass percentage, includes the following components: main antioxidant, 20 - 50%; phosphite auxiliary antioxidant, 10 - 30%; thioether auxiliary antioxidant, 10 - 30%; carbon free radical scavenger, 5 - 15%; metal ion deactivator, 0 - 15%.

[0006] Further, the main antioxidant is a phenolic antioxidant, specifically one or more of Irganox 1010, CCP STAB 390, CCPSTAB 390E, Anox 1315, rganox 1076, Irganox 1098, Irganox 1330, Irganox 3125, Irganox3114, Irganox 245, Sumilizer GA 80, Lowinox 1790.

[0007] Further, the main antioxidant is a phenolic antioxidant, specifically composed of Irganox 1010, Irganox 1330, and Irganox 3114 in a mass percentage of 55%:20%:25%.

[0008] Further, the phosphite auxiliary antioxidant is one or more of Irgafos 168, Weston 618F, Ultranox626, Irgafos P - EPQ, Doverphos S - 9228, ADK STAB PEP - 36, Weston 705.

[0009] Further, the phosphite auxiliary antioxidant is composed of Irgafos 168, Ultranox 626, and Weston 705 in a mass percentage of 37%:44%:19%.

[0010] Further, the thioether auxiliary antioxidant is one or more of Naugard DLTDP, Naugard DTDTDP, NaugardDSTDP, Naugard 412S.

[0011] Further, the thioether auxiliary antioxidant is Naugard 412S.

[0012] Further, the carbon free radical scavenger is one or more of benzofuranone - type carbon free radical scavengers, acrylate - type carbon free radical scavengers, and amine oxide - type carbon free radical scavengers.

[0013] Furthermore, the carbon free radical scavenger is composed of benzofuranone carbon free radical scavenger Irganox HP 136 and acrylate carbon free radical scavenger Sumilizer GM in a mass percentage of 23%:77%.

[0014] Furthermore, the metal ion passivator is one or more of Irganox MD-1024, Naugard XL-1, Irganox1019, and Irganox 1035.

[0015] In summary, this application includes the following beneficial technical effects: 1. The present application carefully screens and proportions a variety of components including primary antioxidants, phosphite auxiliary antioxidants, thioether auxiliary antioxidants, carbon free radical scavengers, and metal ion passivators. The antioxidants in the present application exhibit significant synergistic effects in DCPD resins and DCPD hydrogenated resins. The components interact with each other to jointly resist damage to the resins by environmental factors such as heat, oxygen, light, shear, and high-energy rays, effectively extending the thermal stability period of the resin and significantly reducing the occurrence of aging and yellowing. 2. In the compounding process, the compatibility and interaction between the components are fully considered in the present application, and the negative effects caused by the use of a single antioxidant, such as affecting the processing performance of the resin, causing color changes or producing bad odors, are reduced. By optimizing the ratio, the antioxidant in the present application not only plays a highly efficient protective role, but also maximizes the original excellent properties of the DCPD resin and DCPD hydrogenated resin, ensuring the quality and stability of the resin product. DETAILED DESCRIPTION

[0016] The present application is further described in detail below in conjunction with the examples. Except for the special instructions below, the raw materials used in the present application are all common commercially available materials.

[0017] Performance testing Homemade DCPD petroleum resin and unhydrogenated DCPD yellow resin were selected, dissolved with solvent, and then a resin liquid was prepared for use. Then, the antioxidant obtained in the embodiment or comparative example was added to the resin liquid, and the amount of antioxidant added was 0.5% of the resin liquid. The pressure in the system was controlled to be 355Pa, and the heating was stopped when the reduced pressure distillation reached 178°C to obtain a sample. In addition, a blank group 1 (homemade DCPD petroleum resin) and a blank group 2 (unhydrogenated DCPD yellow resin) were set up, that is, no antioxidant was added.

[0018] Then, the samples were placed in a thermal-oxidative aging chamber at 200 °C for 5 h and 10 h. The yellow index (YI) was measured with reference to ASTM E313-20. The X, Y, and Z tristimulus values of the samples under a D65 light source were measured using a spectrophotometer and calculated according to the formulas YI = 100(CxX - CzZ) / Y, where X, Y, and Z are the tristimulus values, and the values of Cx and Cz can be found in the relevant ASTM standard materials.

[0019] Examples 1-7 An antioxidant for DCPD hydrogenated resin, by mass percentage, includes the following components: a primary antioxidant; a phosphite auxiliary antioxidant; a thioether auxiliary antioxidant; a carbon radical scavenger; a metal ion deactivator.

[0020] It is prepared by the following method: Add the above primary antioxidant and metal ion deactivator into a container, mix evenly at a stirring rate of 500-600 rpm, then sequentially add the phosphite auxiliary antioxidant; the thioether auxiliary antioxidant; the carbon radical scavenger, increase the stirring rate to 900 rpm, stir for 20 min, and then discharge.

[0021] For the above-mentioned antioxidant for DCPD resin and DCPD hydrogenated resin, the specific dosage of each component is shown in the following table.

[0022] Table 1: Specific dosage of each component of the antioxidant for DCPD resin and DCPD hydrogenated resin in Examples 1-8 Among them, the above primary antioxidant is a phenolic antioxidant, specifically composed of Irganox 1010, Irganox 1330, and Irganox 3114 in a mass percentage of 55%:20%:25%; The above phosphite auxiliary antioxidant is specifically composed of Irgafos 168, Ultranox 626, and Weston 705 in a mass percentage of 37%:44%:19%; The above thioether auxiliary antioxidant is specifically Naugard 412S; The above carbon radical scavenger is a benzofuranone-based and acrylate-based carbon radical scavenger, specifically composed of Irganox HP 136 and Sumilizer GM in a mass percentage of 23%:77%; The above metal ion deactivator is specifically Naugard XL-1.

[0023] Example 8 An antioxidant for DCPD resin, by mass percentage, includes the following components: a main antioxidant; a phosphite auxiliary antioxidant; a thioether auxiliary antioxidant; a carbon free radical scavenger. It is prepared by the following method: Add the above-mentioned main antioxidant and metal ion passivator into a container, mix evenly at a stirring rate of 500 - 600 rpm, then sequentially add the phosphite auxiliary antioxidant; the thioether auxiliary antioxidant; the carbon free radical scavenger, increase the stirring rate to 900 rpm, stir for 20 minutes, and then discharge.

[0024] For the above-mentioned antioxidant for DCPD resin, the specific dosages of its components are shown in the above table.

[0025] Among them, the above-mentioned main antioxidant is a phenolic antioxidant, specifically composed of Irganox 1010, Irganox 1330, and Irganox 3114 in a mass percentage of 55%:20%:25%; The above-mentioned phosphite auxiliary antioxidant is specifically composed of Irgafos 168, Ultranox 626, and Weston 705 in a mass percentage of 37%:44%:19%; The above-mentioned thioether auxiliary antioxidant is specifically Naugard 412S; The above-mentioned carbon free radical scavenger is a benzofuranone-based and acrylate-based carbon free radical scavenger, specifically composed of Irganox HP 136 and Sumilizer GM in a mass percentage of 23%:77%; For the antioxidant for DCPD resin and DCPD hydrogenated resin prepared in Examples 1 - 8 above, perform a performance detection test on it with reference to the aforementioned test method, and the test results are shown in the following table.

[0026] Table 2: Performance test results of the antioxidant for DCPD resin and DCPD hydrogenated resin prepared in Examples 1 - 8 As can be seen from the above table, after adding the antioxidants prepared in Examples 1 - 8, Examples 1 - 8 all show a lighter initial color than the blank sample, and among them, Examples 1 and 6 have the lightest initial color; After aging for 5 h and 10 h, after adding the antioxidants prepared in all examples to the resin, the yellowness indices of DCPD resin and hydrogenated resin are far lower than those of the blank sample, indicating that they are highly effective in the high-temperature anti-yellowing of the resin. Among them, Example 1 performs the best in all aspects and can be used as a preferred example.

[0027] Its antioxidant ratio has undergone rigorous testing and optimization, so that the synergistic effect between the main antioxidant, phosphite auxiliary antioxidant, thioether auxiliary antioxidant, carbon free radical scavenger and (metal ion passivator) has reached the best state. This optimized ratio can more effectively resist the damage of environmental factors such as heat, oxygen, light, shear and high-energy rays to DCPD resin and hydrogenated resin. It not only significantly extends the thermal stability period of the resin and reduces the occurrence of aging and yellowing, but also maximizes the original excellent performance of DCPD resin and hydrogenated resin while playing a highly efficient protective role.

[0028] Examples 9-14 An antioxidant for DCPD hydrogenated resin, the preparation method of which is the same as that of Example 1, the only difference being that the above-mentioned primary antioxidant is used differently, as shown in the table below.

[0029] Table 3: Use of primary antioxidants in Examples 9-14 Group Usage of Primary Antioxidant Example 9 The primary antioxidant is a phenolic antioxidant, specifically Irganox 1010 Example 10 The primary antioxidant is a phenolic antioxidant, specifically CCP STAB 390 Example 11 The primary antioxidant is a phenolic antioxidant, specifically Anox 1315 Example 12 The primary antioxidant is a phenolic antioxidant, specifically Sumilizer GA 80 Example 13 The primary antioxidant is a phenolic antioxidant, specifically Lowinox 1790 Example 14 The primary antioxidant is a phenolic antioxidant, specifically Lowinox 3114 The antioxidants for DCPD hydrogenated resins prepared in Examples 9-14 were subjected to performance testing according to the aforementioned testing method. The test results are shown in the following table.

[0030] Table 4: Performance test results of antioxidants for DCPD hydrogenated resins prepared in Examples 9-14 YI Blank Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Initial 13.7 10.1 28 8 23 15.3 19 Aged for 5 h 126.3 39.5 42.8 33.2 52.1 49.2 50.8 Aged for 10 h 150.1 69.3 73.3 66.4 81.9 71.6 77.2 As can be seen from the above table, after adding the antioxidants prepared in Examples 9-14, the DCPD hydrogenated resin exhibited different initial colors, among which only Examples 9 and 11 exhibited initial colors lighter than the blank sample. It may be that in other examples, the groups next to the phenolic hydroxyl group in the structure of the phenolic antioxidant affected the properties of the phenolic hydroxyl group, thereby causing the resin to exhibit a worse initial color. However, after the antioxidants prepared in all the above examples were added to the resin and aged for 5h and 10h, the yellowness index of the resin was much lower than that of the blank sample. From a horizontal perspective, the performance of all the above Examples 9-14 is still quite different from that of Example 1. However, if a single primary antioxidant is selected, Anox 1315 can be used as the phenolic antioxidant.

[0031] Examples 15-19 An antioxidant for DCPD hydrogenated resin, the preparation method of which is the same as that of Example 1, the only difference being that the above-mentioned primary antioxidant is used differently, as shown in the table below.

[0032] Table 5: Use of primary antioxidants in Examples 15-19 For the antioxidants for DCPD hydrogenated resin prepared in Examples 15 - 19 above, their performance was detected and tested with reference to the aforementioned test methods, and the test results are shown in the following table.

[0033] Table 6: Performance test results of antioxidants for DCPD hydrogenated resin prepared in Examples 15 - 19 YI Blank Example 15 Example 16 Example 17 Example 18 Example 19 Initial 13.7 8.2 26.4 31 30.6 17 Aged for 5 h 126.3 17.0 91.1 83.9 79.4 57.5 Aged for 10 h 150.1 50.5 105.6 109.5 103.8 79.4 As can be seen from the above table, after adding the antioxidants prepared in Examples 15 - 19, the DCPD hydrogenated resin showed different initial colors. Only Example 15 showed a lighter initial color than the blank sample. Compared with Example 1, the composition ratio of each component in the main antioxidant in Example 15 was adjusted, but its comprehensive performance was inferior to that of Example 1. In Example 16, Anox 1315 was used to replace Irganox 3114 in equal amount. In Examples 9 - 14, we concluded that among single main antioxidants, using Anox 1315 as the phenolic antioxidant was the best. However, it was found here that after compounding, Anox 1315 was not the best solution, which might be due to its insufficient heat resistance or adverse reactions with impurities in the resin. In addition, in Examples 17 - 18, the number of components of the phenolic antioxidant was increased, but the performance was found to decline instead. Therefore, more types of phenolic antioxidants are not suitable for the DCPD hydrogenated resin in this application, that is, the number of phenolic antioxidants is not the more the better. Only when the main antioxidant is a phenolic antioxidant, specifically composed of Irganox 1010, Irganox 1330, and Irganox 3114 in a mass percentage of 55%:20%:25%, can it have the best performance.

[0034] Examples 20 - 27 An antioxidant for DCPD hydrogenated resin, its preparation method is the same as that in Example 1, and the only difference is the usage of the above-mentioned phosphite auxiliary antioxidant, and the specific situation is shown in the following table.

[0035] Table 7: Usage of phosphite auxiliary antioxidant in Examples 20 - 27 For the antioxidants for DCPD hydrogenated resin prepared in Examples 20 - 27 above, their performance was detected and tested with reference to the aforementioned test methods, and the test results are shown in the following table.

[0036] Table 8: Performance test results of antioxidants for DCPD hydrogenated resin prepared in Examples 20 - 27 As can be seen from the above table, after adding the antioxidants prepared from Examples 20-27, the DCPD hydrogenated resin showed different initial colors. Only Examples 23-26 showed lighter initial colors than the blank sample. After aging for 5 h and 10 h, the yellow index was lower than that of Example 1, showing an obvious gap. In Example 27, the dosage ratio between the components of the phosphite auxiliary antioxidant was changed, and the performance decreased slightly. In Examples 20-22, a single phosphite auxiliary antioxidant was tried, but the performance was poor. In Examples 23-26, multicomponent compounding was used. Although the initial color changed to some extent compared with the blank example, the long-term performance was inferior to that of Example 1. Therefore, only when the phosphite auxiliary antioxidant is composed of Irgafos 168, Ultranox 626, and Weston 705 in a mass percentage of 37%:44%:19% can it have better performance.

[0037] Examples 28-32 An antioxidant for DCPD hydrogenated resin, its preparation method is the same as that of Example 1, and the only difference is the use of the above-mentioned thioether auxiliary antioxidant. The specific situation is shown in the following table.

[0038] Table 9: Use of thioether auxiliary antioxidant in Examples 28-32 For the antioxidants for DCPD hydrogenated resin prepared from Examples 28-32 above, their performance was detected and tested according to the aforementioned test methods. The test results are shown in the following table.

[0039] Table 10: Performance test results of antioxidants for DCPD hydrogenated resin prepared from Examples 28-32 YI Blank Example 28 Example 29 Example 30 Example 31 Example 32 Initial 13.7 11.3 19.7 15.4 23.8 20.2 Aged for 5 h 126.3 29.0 38.4 27.3 88.1 71.8 Aged for 10 h 150.1 66.8 71.5 63.4 110.7 103.4 As can be seen from the above table, after adding the antioxidants prepared from Examples 28-32, the DCPD hydrogenated resin showed different initial colors. Only Example 28 showed a lighter initial color than the blank sample. After aging for 5 h and 10 h, compared with Example 1, the performance of Examples 31 and 32 decreased extremely significantly. In Examples 28-30, the thioether auxiliary antioxidant was a single component. Among them, although the performance was inferior to that of Example 1, the thioether auxiliary antioxidant Naugard DLTDP in Example 28 and the thioether auxiliary antioxidant Naugard DSTDP in Example 30 were both good choices. In Examples 31 - 32, attempts were made to use multi-component blends, with the preferred single-component Naugard DLTDP and Naugard DSTDP. Whether in a three-component blend or a two-component blend with Naugard 412S, the performance of each item was inferior to that of Example 1. It can be seen that only when the thioether auxiliary antioxidant is Naugard 412S can better performance be achieved.

[0040] Examples 33 - 39 An antioxidant for DCPD hydrogenated resin, the preparation method of which is the same as that of Example 1, with the only difference being the different usage of the above-mentioned carbon radical scavengers. The specific situation is shown in the following table.

[0041] Table 11: Usage of carbon radical scavengers in Examples 33 - 39 For the antioxidants for DCPD hydrogenated resin prepared in Examples 33 - 39 above, performance detection tests were carried out on them with reference to the aforementioned test methods. The test results are shown in the following table.

[0042] Table 12: Performance test results of antioxidants for DCPD hydrogenated resin prepared in Examples 33 - 39 As can be seen from the above table, after adding the antioxidants prepared in Examples 33 - 39, the DCPD resin and the hydrogenated resin showed different initial colors. Only Examples 35, 37, and 39 showed darker initial colors than the blank sample. After aging for 5 h and 10 h, there were relatively obvious differences in the yellow index compared with Example 1. In Examples 33 - 36, single-component carbon radical scavengers were used, including amine oxides, benzofuranones, and acrylate esters. However, it was found that the performance was poor. In Examples 37 - 39, multi-component carbon radical scavengers were used, and the antioxidants prepared therefrom still had inferior performance to that of Example 1. In Example 38, the dosage ratio between the components of the carbon radical scavenger was changed, and the performance showed a slight decrease compared with Example 1. It can be seen that only when the carbon radical scavenger is composed of benzofuranone carbon Irganox HP 136 and acrylate Sumilizer GM in a mass percentage of 23%:77% can better performance be achieved.

[0043] Examples 40 - 44 An antioxidant for DCPD hydrogenated resin, the preparation method of which is the same as that of Example 1, and the only difference is that the usage of the above metal ion passivator is different, and the specific situation is shown in the following table.

[0044] Table 13: Usage of metal ion passivator in Examples 40 - 44 Comparative Example 1 An antioxidant for DCPD hydrogenated resin, the preparation method of which is the same as that of Example 1, and the only difference is that its components do not contain a carbon radical scavenger, and the specific situation is shown in the following table.

[0045] Table 14: Specific dosage of each component of the antioxidant for DCPD hydrogenated resin in Comparative Example 1 Comparative Example 1 Primary Antioxidant 20 Phosphite Auxiliary Antioxidant 20 Sulfide Auxiliary Antioxidant 30 Metal Ion Inactivator 15 Comparative Example 2 An antioxidant for DCPD resin, the preparation method of which is the same as that of Example 1, and the only difference is that its components do not contain a carbon radical scavenger, and the specific situation is shown in the following table.

[0046] Table 15: Specific dosage of each component of the antioxidant for DCPD resin in Comparative Example 1 Comparative Example 2 Primary Antioxidant 50 Phosphite Auxiliary Antioxidant 10 Sulfide Auxiliary Antioxidant 15 Metal Ion Inactivator 0 For the DCPD resin and the antioxidant for DCPD hydrogenated resin prepared in Examples 40 - 44 and Comparative Examples 1 - 2 above, their performance detection tests were carried out with reference to the aforementioned test methods, and the test results are shown in the following table.

[0047] Table 16: Performance test of the antioxidant for DCPD resin and DCPD hydrogenated resin prepared in Examples 40 - 44 and Comparative Examples 1 - 2 As can be seen from the above table, after adding the antioxidants prepared in Examples 40 - 44 and Comparative Examples 1 - 2, the DCPD hydrogenated resin showed different initial colors. Among them, only Comparative Examples 1 - 2 showed a darker initial color than the blank sample. After aging for 5h and 10h, the yellowness index in Examples 40 - 44 decreased slightly compared with Example 1, while in Comparative Example 1 and Comparative Example 2, there was a significant decline, and Comparative Example 2 showed the worst performance.

[0048] All of the above are modifications that those skilled in the art can make according to their needs after reading this specification without creative contributions or obvious technical inspiration, but as long as they are within the scope of the claims of this application, they should be protected by the patent law.

Claims

1. An antioxidant for DCPD resin and DCPD hydrogenated resin, characterized in that, By mass percentage, it includes the following components: primary antioxidant, 20 - 50%; phosphite auxiliary antioxidant, 10 - 30%; thioether auxiliary antioxidant, 10 - 30%; carbon radical scavenger, 5 - 15%; metal ion deactivator, 0 - 15%.

2. The antioxidant for DCPD resin and DCPD hydrogenated resin according to claim 1, wherein The primary antioxidant is a phenolic antioxidant, specifically one or more of Irganox 1010, CCP STAB 390, CCP STAB 390E, Anox 1315, Irganox 1076, Irganox 1098, Irganox 1330, Irganox 3125, Irganox 3114, Irganox 245, Sumilizer GA 80, Lowinox 1790.

3. The antioxidant for DCPD resin and DCPD hydrogenated resin according to claim 2, characterized in that, The primary antioxidant is a phenolic antioxidant, specifically composed of Irganox 1010, Irganox 1330, Irganox 3114, in a mass percentage of 55%:20%:25%.

4. The antioxidant for DCPD resin and DCPD hydrogenated resin according to claim 1, characterized in that, The phosphite auxiliary antioxidant is one or more of Irgafos 168, Weston 618F, Ultranox 626, Irgafos P - EPQ, Doverphos S - 9228, ADK STAB PEP - 36, Weston 705.

5. The antioxidant for DCPD resin and hydrogenated DCPD resin according to claim 4, characterized in that, The phosphite auxiliary antioxidant is composed of Irgafos 168, Ultranox 626, Weston 705, in a mass percentage of 37%:44%:19%.

6. The antioxidant for DCPD resin and DCPD hydrogenated resin according to claim 1, wherein The thioether auxiliary antioxidant is one or more of Naugard DLTDP, Naugard DTDTDP, Naugard DSTDP, Naugard 412S.

7. The antioxidant for DCPD resin and DCPD hydrogenated resin according to claim 6, characterized in that, The thioether auxiliary antioxidant is Naugard 412S.

8. The antioxidant for DCPD resin and DCPD hydrogenated resin according to claim 1, characterized in that, The carbon radical scavenger is one or more of benzofuranone - type carbon radical scavengers, acrylate - type carbon radical scavengers, amine oxide - type carbon radical scavengers.

9. The antioxidant for DCPD resin and hydrogenated DCPD resin according to claim 8, characterized in that, The carbon radical scavenger is composed of the benzofuranone - type carbon radical scavenger Irganox HP 136 and the acrylate - type carbon radical scavenger Sumilizer GM, in a mass percentage of 23%:77%.

10. The antioxidant for DCPD resin and DCPD hydrogenated resin according to claim 1, characterized in that, The metal ion deactivator is one or more of Irganox MD - 1024, Naugard XL - 1, Irganox 1019, Irganox 1035.

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