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Preparation method of dutrex-unsaturated nitrile-cyclenes heat-resistant copolymer

An unsaturated and cyclic olefin technology, applied in the field of polymer preparation, can solve the problems of low reaction activity of methyl-substituted styrene, low product conversion rate, etc., and achieve excellent mechanical properties, good product quality, and high heat distortion temperature. Effect

Active Publication Date: 2012-05-16
ZHEJIANG OCEANKING DEVELOPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for some special fields or special requirements, the heat resistance of the above existing grafted modified products cannot meet the requirements and needs to be further improved, and the existing ABS or SAN sacrifices part of the mechanical properties when improving the heat resistance. Properties, especially the tensile strength and notched impact strength of the material; meanwhile, due to the low reactivity of methyl-substituted styrene, the product conversion rate is low

Method used

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  • Preparation method of dutrex-unsaturated nitrile-cyclenes heat-resistant copolymer
  • Preparation method of dutrex-unsaturated nitrile-cyclenes heat-resistant copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 1.5kg styrene, 0.50kg acrylonitrile, 0.15kg cyclohexene, 0.15kg ethylbenzene, put them into the reactor, add 1.5% benzoyl peroxide and 0.05% n-dodecyl mercaptan by weight of the monomer , 0.2% antioxidant 168, stir and mix at room temperature for 30 minutes. Then the reactor was heated to 85°C with an electric heater jacketed outside the reactor, the reaction pressure was controlled to be 0.5MPa, the reaction temperature was 85°C, the stirring speed was 100rpm, and the reaction was carried out for 2.5 hours to obtain a polymer glue with a solid content of 92.0%. Then the polymer glue solution enters a devolatilizer to remove unreacted monomers and solvents. The temperature during the devolatilization and separation is controlled at 230°C and the pressure is 3mmHg. After the melt is devolatilized and separated, it is pelletized by an extruder. Use the corresponding ASTM standard to analyze and test the performance of the product in Table 1. Izod notched impact stre...

Embodiment 2

[0026] Take 1.5kg styrene, 0.50kg acrylonitrile, 0.15kg cyclohexene, 0.15kg ethylbenzene, put them into the reactor, add 1.0% benzoyl peroxide and 0.05% n-dodecyl mercaptan by weight of monomer , 0.4% antioxidant 168, stirring and mixing at room temperature for 30 minutes. Then the reactor was heated to 95°C with an electric heater jacketed outside the reactor, the reaction pressure was controlled to be 0.4MPa, the reaction temperature was 120°C, the stirring speed was 100rpm, and the reaction was carried out for 2.0 hours to obtain a polymer glue with a solid content of 92.6%. Then the polymer glue solution enters a devolatilizer to remove unreacted monomers and solvents. The temperature during the devolatilization and separation is controlled at 230°C and the pressure is 3mmHg. After the melt is devolatilized and separated, the extruder granulates. Use the corresponding ASTM standard to analyze and test the performance of the product in Table 1.

Embodiment 3

[0028] Take 1.5kg styrene, 0.50kg acrylonitrile, 0.15kg cyclohexene, 0.15kg ethylbenzene, put them into the reactor, add 1.0% benzoyl peroxide and 0.05% n-dodecyl mercaptan by weight of monomer , 0.2% antioxidant 1076, stir and mix at room temperature for 30 minutes. Then the reactor was heated to 95°C with an electric heater jacketed outside the reactor, the reaction pressure was controlled to be 0.4 MPa, the reaction temperature was 100°C, the stirring speed was 100 rpm, and the reaction was carried out for 2.0 hours to obtain a polymer glue with a solid content of 90.6%. Then the polymer glue solution enters a devolatilizer to remove unreacted monomers and solvents. The temperature during the devolatilization and separation is controlled at 230°C and the pressure is 3mmHg. After the melt is devolatilized and separated, the extruder granulates. Use the corresponding ASTM standard to analyze and test the performance of the product in Table 1.

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Abstract

The invention relates to a preparation method of a dutrex-unsaturated nitrile-cyclenes heat-resistant copolymer, which is characterized by comprising the following steps of: mixing and dispersing 2-15 percent of cyclones, 35-75 percent of dutrex monomer, 15-50 percent of acrylonitrile and 0.001-2.0 percent of evocating agent into 1.0-10.0 percent of solvent in the total weight percentage of a monomer; mixing; polymerizing at the temperature of 85-300 DEG C and atmospheric pressure of 0.1-10.0Mpa; stopping polymerizing until the solid content is 50-99 percent in a polymerized product; and obtaining the dutrex-unsaturated nitrile-cyclenes heat-resistant copolymer after the solvent is removed. Compared with the prior art, the prepared product of the invention has higher thermal deformation temperature, excellent mechanical property, forming property and high product quality; meanwhile, the reaction conversion rate is greatly increased and reaches above 95 percent. The prepared heat-resistant copolymer can be widely used for the fields of electronic instruments, automotive industry, household electrical appliance parts, packaging materials, general merchandises, and the like which have a certain requirement for material heat resistance.

Description

Technical field [0001] The invention relates to the field of preparation of high polymers, in particular to a preparation method of aromatic hydrocarbon-unsaturated nitrile-cycloolefin heat-resistant copolymer. Background technique [0002] In addition to polystyrene, styrene copolymers are also important and large-scale industrialized production of styrene-acrylonitrile copolymer (SAN) and acrylonitrile-butadiene-styrene copolymer (ABS). Among them, SAN resin is an amorphous, colorless or yellowish thermoplastic. It has good performance in dimensional stability, weather resistance, heat resistance, oil resistance and chemical stability, and can withstand non-polar gasoline, kerosene, aromatic hydrocarbons, etc. It is resistant to water, acid, alkali, detergent and halogenated hydrocarbon solvents, but it is soluble in ketones and can be swelled by organic solvents. The appearance of ABS resin is slightly yellow and opaque, with good dimensional stability, excellent impact resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/10C08F220/44C08F232/04C08F212/06C08F212/14C08F220/42C08F2/44
Inventor 傅建永房江华沈曙光周文斌杨建平邱琪浩胡敏杰
Owner ZHEJIANG OCEANKING DEVELOPMENT CO LTD