Ultrahigh-toughness ABS (acrylonitrile-butadiene-styrene) resin and preparation method thereof

Abstract

The invention discloses ultrahigh-toughness ABS (acrylonitrile-butadiene-styrene) resin and a preparation method thereof. The method comprises the following steps: reacting polybutadiene large-particle-size latex with the particle size dispersity of more than or equal to 0.15 and the particle size of 0.20-0.35 mu m with styrene and acrylonitrile to obtain wet powder with the moisture content of less than 30%, and drying the wet powder to obtain grafted powder; and carrying out extrusion and granulation on SAN (Styrene Acrylonitrile) resin with the acrylonitrile content of 30.39-32.44%, the weight-average molecular weight of 13.0-15.0 million and the PDI of 2.0-2.5, and a blend of the grafted powder and a polyolefin elastomer grafted styrene polymer to obtain the ultrahigh-toughness ABS resin. The problem of high difficulty in preparation of the ABS resin with ultrahigh toughness and higher tensile strength at the same time at present is effectively solved.

Description

Technical Field

[0001] The present disclosure relates to the field of resin materials, and specifically to an ABS resin and a preparation method thereof. Background Art

[0002] The statements in this section only provide background information related to the present disclosure and do not constitute prior art.

[0003] Ultra-high toughness ABS resin is mainly used in fields such as racing helmets, safety helmets, and high-end modified ABS. With the development of the economy and the improvement of people's safety awareness, the requirements for the performance of helmets and safety helmets have been further improved. In addition, with the increasing requirements for the toughness of ABS products in the field of modification such as automobiles, the demand for ultra-high toughness ABS products by users has gradually increased.

[0004] The impact strength of ordinary ABS resins is 18 - 20 KJ / m 2 , the tensile strength is 49 - 52 MPa, and the R hardness is 105 - 110. To improve the impact toughness of ABS resin, it is usually necessary to significantly increase the rubber content, change the type of main latex, and add cross-linking agents, etc., but this will cause a decrease in the tensile strength and hardness of ABS. It is very difficult to achieve ultra-high toughness while maintaining high tensile strength and hardness, which creates certain obstacles in post-processing applications and user use, and limits the application of such compositions.

[0005] The invention patent with the publication number CN113667234 provides a preparation method of ultra-high toughness ABS resin. Specifically, two kinds of dispersed phase graft polymers are used. The first ABS graft polymer is a rubber particle grafted styrene and acrylonitrile polymer formed by 55% - 70 wt% of polybutadiene rubber, and the second ABS graft polymer is a rubber particle grafted styrene and acrylonitrile polymer formed by 55% - 70 wt% of polybutadiene-isoprene rubber. The impact strength of the examples is 36 - 48 KJ / m 2 , the tensile strength is 37 - 49 MPa; although the ultra-high toughness ABS resin prepared by this method maintains a high tensile strength while obtaining ultra-high toughness, this method adds isoprene to the main latex, which has the defects of complex process and difficult-to-obtain raw materials, and is difficult to implement.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] In view of this, the present disclosure provides a preparation method of ultra-high toughness ABS resin to solve the problem of high difficulty in preparing an ABS resin that simultaneously has ultra-high toughness and high tensile strength.

[0008] The present disclosure also provides an ultra-high toughness ABS resin prepared by using the preparation method.

[0009] In a first aspect, a preparation method of the ultra-high toughness ABS resin includes: Reacting polybutadiene large particle size latex with a particle size dispersion degree ≥ 0.15 and a particle size of 0.20 - 0.35 μm with styrene and acrylonitrile to obtain wet powder with a wet content < 30%, and drying the wet powder to obtain grafted powder; Extruding and granulating a blend of SAN resin with an acrylonitrile content of 30.39 - 32.44%, a weight average molecular weight of 130,000 - 150,000, a PDI of 2.0 - 2.5, the grafted powder, and a polyolefin elastomer grafted styrene polymer to obtain the ultra-high toughness ABS resin.

[0010] In the present disclosure and possible embodiments, the preparation method of the grafted powder includes: Adding 60 - 75 parts by mass of polybutadiene large particle size latex and 0.01 - 0.012 parts of emulsifier into a kettle; after heating a monomer mixture composed of 17.5 - 28 parts of styrene, 7.5 - 12 parts of acrylonitrile, 0.35 - 0.56 parts of chain transfer agent, and 0.1457 - 0.212 parts of initiator to 40 - 55 °C, adding 35% of the mass of the monomer mixture into the kettle, reacting for 20 min - 1 h, then heating to 60 - 65 °C, adding the remaining monomer mixture, continuing to react for 1.4 h - 3.5 h, then heating to 70 - 82 °C, aging for 1 - 1.5 h, and ending the reaction to obtain grafted latex; adding 2.2 - 4.6 parts of sulfate into the grafted latex for demulsification and coagulation, and forming the wet powder by variable dehydration, and drying the wet powder at 60 - 85 °C to obtain the grafted powder.

[0011] In the present disclosure and possible embodiments, the emulsifier includes potassium fatty acid, potassium oleate, potassium rosin acid, sodium dodecyl sulfate, and sodium dodecyl benzene sulfonate; The chain transfer agent includes tert-dodecyl mercaptan, n-dodecyl mercaptan, and 2,4-diphenyl-4-methyl-1-pentene; The initiator includes dicumyl peroxide, cumene hydroperoxide, potassium persulfate, and azobisisobutyronitrile; The coagulant includes sulfuric acid, acetic acid, potassium sulfate, magnesium sulfate, and sodium sulfate.

[0012] In the present disclosure and possible embodiments, the emulsifier is potassium fatty acid, the chain transfer agent is n-dodecyl mercaptan, the initiator is dicumyl peroxide, and the coagulant is magnesium sulfate.

[0013] In the present disclosure and possible embodiments, the blend further includes additives.

[0014] In the present disclosure and possible embodiments, by mass fraction, the contents of the components in the blend are respectively 28 - 35 parts of the grafted powder, 65 - 72 parts of the SAN resin, 1 - 10 parts of the polyolefin elastomer grafted styrene polymer, and 0.5 - 10 parts of the auxiliary agent.

[0015] In the present disclosure and possible embodiments, the auxiliary agent includes a lubricant and an antioxidant.

[0016] In the present disclosure and possible embodiments, the lubricant includes magnesium stearate, ethylene bisstearamide, and pentaerythritol stearate; the antioxidant includes n-octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate, 2,4-bis(octylthiomethyl)-6-methylphenol, and pentaerythritol tetra[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate].

[0017] In the present disclosure and possible embodiments, the lubricant is magnesium stearate, and the antioxidant is n-octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate.

[0018] In a second aspect, the ultra-high toughness ABS resin is prepared by the method described in the first aspect.

[0019] The present invention has the following beneficial effects: The preparation method of the present invention adjusts the particle size dispersion of the polybutadiene large-particle-size latex prepared by the agglomeration method, enables different particle-size rubbers to synergistically toughen, and simultaneously controls the water content of the wet powder after the grafted latex coagulates, as well as the molecular weight and PDI value of the matrix resin SAN, so that the grafted powder matches the SAN resin, thereby improving the toughening effect, tensile strength, and hardness. An ultra-high toughness ABS resin with an impact toughness of more than 41 - 46 KJ / m2, a tensile strength of 42 - 49 MPa, and a hardness of 102 - 106 is prepared. While having high impact toughness, it also maintains good tensile strength and hardness, that is, the ultra-high toughness ABS resin of the present invention has good comprehensive properties; in addition, the polyolefin elastomer grafted styrene polymer also has a good toughening effect and plays a key role in the preparation of the ultra-high toughness ABS resin; at the same time, the raw materials of the present invention are easily available and the process is simple, having good practical applicability. Embodiment

[0020] The following is a description of the present disclosure based on embodiments. However, it should be noted that the present disclosure is not limited to these embodiments. In the following detailed description of the present disclosure, some specific details are described in detail. However, for the parts that are not described in detail, those skilled in the art can also fully understand the present disclosure.

[0021] Meanwhile, unless the context clearly requires otherwise, the words "comprising", "including" and similar terms throughout the specification and claims shall be construed in an inclusive sense rather than an exclusive or exhaustive sense; that is to say, it is the meaning of "including but not limited to".

[0022] To make the objectives, technical solutions and advantages of the present invention more clearly understood, the following further describes the present invention in detail by way of enumerating embodiments.

[0023] The polybutadiene large-particle-size latex (particle size dispersity ≥ 0.15, particle size 0.20 - 0.35 μm) and SAN resin (acrylonitrile content 30.39 - 32.44%, weight-average molecular weight 130,000 - 150,000, PDI 2.0 - 2.5) used in the embodiments of the present disclosure are purchased from Daqing Petrochemical Company; the polyolefin elastomer grafted styrene polymer is prepared by melt graft polymerization of polyolefin elastomer POE with an initiator and styrene at 120 - 160 °C, or can be purchased through commercial channels; other raw materials can be purchased through commercial channels. Example 1

[0024] 1. Preparation of grafted powder: By weight, 60 parts of the wide-dispersion, single-peak polybutadiene large-particle-size latex prepared by the agglomeration method and 0.012 part of the emulsifier potassium fatty acid are added to the reaction kettle and heated to 40 °C; 28 parts of styrene, 12 parts of acrylonitrile, 0.56 part of the chain transfer agent tert-dodecyl mercaptan, and 0.212 part of the initiator DCP are mixed evenly to obtain a monomer mixture. 35% of the mass of the monomer mixture is added to the reaction kettle. After reacting for 1 h, the temperature is raised to 60 °C, and the remaining monomer mixture is continuously added to the reaction kettle and reacted for another 3.5 h. After the reaction is completed, the temperature is raised to 82 °C and aged for 1 h to obtain a grafted latex. After demulsifying and coagulating with magnesium sulfate and variable dehydration, a wet powder with a wet content < 30% is obtained. The wet powder is dried with nitrogen to prepare a grafted powder.

[0025] 2. Preparation of ultra-high toughness ABS resin: A blend of SAN resin (acrylonitrile content 30.39%, weight-average molecular weight 131,890, PDI value 2.06), grafted powder, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 is subjected to twin-screw extrusion granulation at 215 °C to obtain the ultra-high toughness ABS resin of Example 1. Among them, the weight ratio of the grafted powder to the SAN matrix resin, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 is 34 / 65 / 1 / 0.6 / 0.8. Example 2

[0026] 1. Preparation of grafted powder: 63 parts of polybutadiene large-particle-size latex and 0.012 part of emulsifier potassium fatty acid were added into the kettle, and the temperature was raised to 45 °C; 25.9 parts of styrene, 11.1 parts of acrylonitrile, 0.518 part of chain transfer agent tert-dodecyl mercaptan, and 0.1961 part of initiator DCP were mixed evenly to obtain a monomer mixture. 35% of the mass of the monomer mixture was added into the reaction kettle. After reacting for 45 min, the temperature was raised to 60 °C. Then the remaining monomer mixture was continuously added into the reaction kettle and reacted for another 3.2 h. After the reaction ended, the temperature was raised to 80 °C and aged for 1 h to obtain grafted latex. After cooling and discharging, the grafted latex was demulsified and coagulated with magnesium sulfate and dehydrated with variable amounts to obtain a wet powder with a moisture content < 30%. The wet powder was dried with nitrogen to prepare grafted powder.

[0027] 2. Preparation of ultra-high toughness ABS resin: A blend of SAN resin (acrylonitrile content is 31.45%, weight-average molecular weight is 134960, PDI value is 2.28), grafted powder, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 was subjected to twin-screw extrusion granulation at 215 °C to obtain the ultra-high toughness ABS resin of Example 2. Among them, the weight ratio of the grafted powder to SAN matrix resin, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 is 32 / 64 / 1 / 0.6 / 0.8. Example 3

[0028] 1. Preparation of grafted powder: 65 parts of polybutadiene large-particle-size latex and 0.012 part of emulsifier potassium fatty acid were added into the kettle, and the temperature was raised to 48 °C. 24.5 parts of styrene, 10.5 parts of acrylonitrile, 0.49 part of chain transfer agent tert-dodecyl mercaptan, and 0.1855 part of initiator DCP were mixed evenly to obtain a monomer mixture. 35% of the mass of the monomer mixture was added into the reaction kettle. After reacting for 35 min, the temperature was raised to 60 °C. Then the remaining monomer mixture was continuously added into the reaction kettle and reacted for another 3 h. After the reaction ended, the temperature was raised to 78 °C and aged for 1.5 h to obtain grafted latex. After cooling and discharging, the grafted latex was demulsified and coagulated with magnesium sulfate and dehydrated with variable amounts to obtain a wet powder with a moisture content < 30%. The wet powder was dried with nitrogen to prepare grafted powder.

[0029] 2. Preparation of ultra-high toughness ABS resin: A blend of SAN resin (acrylonitrile content is 31.88%, weight-average molecular weight is 139529, PDI value is 2.45), graft powder, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate and antioxidant 1076 is subjected to twin-screw extrusion granulation at 215 °C to obtain the ultra-high toughness ABS resin of this Example 3. Among them, the weight ratio of the graft powder to the SAN matrix resin, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 is 29 / 68 / 3 / 0.6 / 0.8. Example 4

[0030] 1. Preparation of graft powder: 70 parts of polybutadiene latex with large particle size and 0.01 part of emulsifier potassium fatty acid are added to the kettle, and the temperature is raised to 50 °C. 21.0 parts of styrene, 9.0 parts of acrylonitrile, 0.42 part of chain transfer agent tert-dodecyl mercaptan, and 0.1749 part of initiator DCP are mixed evenly to obtain a monomer mixture. 35% of the mass of the monomer mixture is added to the reaction kettle. After reacting for 30 min, the temperature is raised to 60 °C, and the remaining monomer mixture is continuously added to the reaction kettle and reacted for another 2.5 h. After the reaction is completed, the temperature is raised to 75 °C and aged for 1.5 h to obtain a graft latex. After cooling and discharging, the graft latex is demulsified and coagulated with magnesium sulfate and dehydrated with variable amounts to obtain a wet powder with a moisture content < 30%. The wet powder is dried with nitrogen to prepare a graft powder.

[0031] 2. Preparation of ultra-high toughness ABS resin: A blend of SAN resin (acrylonitrile content is 32.03%, weight-average molecular weight is 141195, PDI value is 2.29), graft powder, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate and antioxidant 1076 is subjected to twin-screw extrusion granulation at 215 °C to obtain the ultra-high toughness ABS resin of this Example 4. Among them, the weight ratio of the graft powder to the SAN matrix resin, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 is 25 / 70 / 5 / 0.6 / 0.8. Example 5

[0032] 1. Preparation of graft powder: Add 72 parts of polybutadiene large-particle-size latex and 0.01 part of emulsifier potassium fatty acid into the kettle, heat up to 53 °C, mix 19.6 parts of styrene, 8.4 parts of acrylonitrile, 0.392 part of chain transfer agent tert-dodecyl mercaptan, and 0.1632 part of initiator DCP evenly to obtain a monomer mixture. Add 35% of the mass of the monomer mixture into the reaction kettle. After reacting for 25 min, heat up to 60 °C, add the remaining monomer mixture into the reaction kettle, and continue to react for 2 h. After the reaction is completed, heat up to 75 °C and age for 1.5 h to obtain grafted latex. Cool down and discharge the material. The grafted latex is demulsified and coagulated with magnesium sulfate and dehydrated with variable amounts to obtain a wet powder with a moisture content < 30%. The wet powder is dried with nitrogen to prepare grafted powder.

[0033] 2. Preparation of ultra-high toughness ABS resin: A blend of SAN resin (acrylonitrile content is 32.36%, weight-average molecular weight is 14459, PDI value is 2.49), grafted powder, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 is subjected to twin-screw extrusion granulation at 215 °C to obtain the ultra-high toughness ABS resin of Example 5. Among them, the weight ratio of the grafted powder to the SAN matrix resin, polyolefin elastomer grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 is 25 / 70 / 5 / 0.6 / 0.8. Example 6

[0034] 1. Preparation of grafted powder: Add 75 parts of polybutadiene large-particle-size latex and 0.01 part of emulsifier potassium fatty acid into the kettle, and heat up to 55 °C; Mix 17.5 parts of styrene, 7.5 parts of acrylonitrile, 0.35 part of chain transfer agent tert-dodecyl mercaptan, and 0.1457 part of initiator DCP evenly to obtain a monomer mixture. Add 35% of the mass of the monomer mixture into the reaction kettle. After reacting for 20 min, heat up to 65 °C, add the remaining monomer mixture into the reaction kettle, and continue to react for 1.4 h. After the reaction is completed, heat up to 70 °C and age for 1.5 h to obtain grafted latex. Cool down and discharge the material. The grafted latex is demulsified and coagulated with magnesium sulfate and dehydrated with variable amounts to obtain a wet powder with a moisture content < 30%. The wet powder is dried with nitrogen to prepare grafted powder.

[0035] 2. Preparation of ultra-high toughness ABS resin: A blend of SAN resin (acrylonitrile content is 32.44%, weight-average molecular weight is 151,210, PDI value is 2.37), grafted powder, polyolefin elastomer-grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 was subjected to twin-screw extrusion granulation at 215 °C to obtain the ultra-high toughness ABS resin of Example 6. Among them, the weight ratio of the grafted powder to the SAN matrix resin, polyolefin elastomer-grafted styrene polymer, lubricant magnesium stearate, and antioxidant 1076 is 18 / 72 / 10 / 0.6 / 0.8. Comparative Example 1

[0036] The amount of polybutadiene large-particle-size latex was changed to 55 parts, and other conditions were the same as those in Example 6. Comparative Example 2

[0037] In the blending and granulation, the polyolefin elastomer-grafted styrene polymer was not added, and other conditions were the same as those in Example 6.

[0038] The ultra-high toughness ABS resins of the above examples and comparative examples were dried in a forced-air oven at 80 °C for 4 hours and then injection-molded into standard test specimens using a plastic injection molding machine at an injection temperature of 220 °C; the injection-molded specimens and test plates were placed at 50% relative humidity and 23 °C for at least 24 hours before performance testing: (1) The notched Izod impact strength was tested according to the GB / T 1043.1 standard; (2) The tensile strength was tested according to the GB / T 1040.2 standard; (3) The hardness was tested according to the GB / T 3398.2 standard; The performance data of the ultra-high toughness ABS resins of Examples 1-6 and Comparative Examples 1-2 obtained from the tests are shown in Table 1 below: Table 1 Performance Data of Ultra-High Toughness ABS Resins Test Items Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparison 1 Comparison 2 <![CDATA[Izod impact strength KJ / m 2 > 41 41 42 43 42 46 31 40 Tensile Strength MPa 42 43 45 47 49 49 53 41 Hardness R 106 105 104 103 103 102 109 106 As can be seen from Table 1, the ultra-high toughness ABS resins of Examples 1-6 of the present disclosure have an impact toughness of 41-46 KJ / m 2 ², a tensile strength of 42-49 MPa, and a hardness of 102-106. While having high impact toughness, they maintain good tensile strength and hardness. Therefore, the ultra-high toughness ABS resin prepared by the method of the present invention has good comprehensive performance.

[0039] In addition, from the comparative example data in Table 1, it can be seen that the addition amount of polybutadiene large-particle-size latex in the graft polymerization is the basis for obtaining ultra-high toughness ABS products, and the polyolefin elastomer-grafted styrene polymer is the key influencing factor for further improving the impact toughness of ABS products.

[0040] The above-described embodiments are only illustrative of the implementation modes of the present disclosure. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present disclosure. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications, equivalent substitutions, improvements, etc. can be made, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be subject to the appended claims.

Claims

1. A preparation method of a super high toughness ABS resin, characterized in that, Comprising: Obtaining a wet powder with a wet content < 30% by reacting polybutadiene large-particle-size latex with a particle size dispersion degree ≥ 0.15 and a particle size of 0.20 - 0.35 μm with styrene and acrylonitrile, and drying the wet powder to obtain a grafted powder; Extruding and pelletizing a blend of an SAN resin with an acrylonitrile content of 30.39 - 32.44%, a weight-average molecular weight of 130,000 - 150,000, a PDI of 2.0 - 2.5, the grafted powder, and a polyolefin elastomer grafted styrene polymer to obtain the ultra-high toughness ABS resin.

2. The preparation method of the super high toughness ABS resin according to claim 1, characterized in that, The preparation method of the grafted powder comprises: According to mass fraction, adding 60 - 75 parts of polybutadiene large-particle-size latex and 0.01 - 0.012 parts of emulsifier into a kettle; after heating a monomer mixture composed of 17.5 - 28 parts of styrene, 7.5 - 12 parts of acrylonitrile, 0.35 - 0.56 parts of chain transfer agent, and 0.1457 - 0.212 parts of initiator to 40 - 55 °C, adding 35% of the mass of the monomer mixture into the kettle, reacting for 20 min - 1 h, then heating to 60 - 65 °C, adding the remaining monomer mixture, continuing to react for 1.4 h - 3.5 h, then heating to 70 - 82 °C, aging for 1 - 1.5 h, and ending the reaction to obtain a grafted latex; adding 2.2 - 4.6 parts of a coagulant into the grafted latex for demulsification and coagulation, and forming the wet powder through variable dehydration, and drying the wet powder at 60 - 85 °C to obtain the grafted powder.

3. The preparation method of the super high toughness ABS resin according to claim 2, characterized in that: The emulsifier includes potassium fatty acid, potassium oleate, potassium rosinate, sodium dodecyl sulfate, and sodium dodecylbenzenesulfonate; The chain transfer agent includes tert-dodecyl mercaptan, n-dodecyl mercaptan, and 2,4-diphenyl-4-methyl-1-pentene; The initiator includes dicumyl peroxide, cumene hydroperoxide, potassium persulfate, and azobisisobutyronitrile; The coagulant includes sulfuric acid, acetic acid, potassium sulfate, magnesium sulfate, and sodium sulfate.

4. The preparation method of the super high toughness ABS resin according to claim 3, characterized in that: The emulsifier is potassium fatty acid, the chain transfer agent is n-dodecyl mercaptan, the initiator is dicumyl peroxide, and the coagulant is magnesium sulfate.

5. The preparation method of the super high toughness ABS resin according to any one of claims 1-4, characterized in that: The blend further includes additives.

6. The preparation method of the super high toughness ABS resin according to claim 5, characterized in that: According to mass fraction, the contents of each component in the blend are 28 - 35 parts of the grafted powder, 65 - 72 parts of the SAN resin, 1 - 10 parts of the polyolefin elastomer grafted styrene polymer, and 0.5 - 10 parts of the additives.

7. The preparation method of the super high toughness ABS resin according to claim 6, characterized in that: The additives include lubricants and antioxidants.

8. The preparation method of the super high toughness ABS resin according to claim 7, characterized in that: The lubricants include magnesium stearate, ethylene bisstearamide, and pentaerythritol stearate; The antioxidants include n-octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate, 2,4-bis(n-octylthiomethyl)-6-methylphenol, and pentaerythritol tetra[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]; 9. The preparation method of the super high toughness ABS resin according to claim 8, characterized in that: The lubricant is magnesium stearate, and the antioxidant is n-octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate.

10. A super high toughness ABS resin, characterized in that: Prepared by the method according to any one of claims 1 - 9.