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A kind of rosin-based thiolated polyvinyl chloride comb polymer and its preparation method and application

A technology of rosin-based mercaptan and comb-like polymer, which is applied in the field of rosin-based mercaptanized polyvinyl chloride comb-like polymer and its preparation, can solve the problems of PVC product function decline, endangering human health, and polluting the environment, achieving The effect of good product quality, less toxic and side effects, and low production cost

Inactive Publication Date: 2020-02-18
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, plasticizers will continue to seep out of PVC during use, and until the function of PVC products is reduced or even lost, some plasticizers that seep out will pollute the environment and endanger human health.

Method used

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  • A kind of rosin-based thiolated polyvinyl chloride comb polymer and its preparation method and application
  • A kind of rosin-based thiolated polyvinyl chloride comb polymer and its preparation method and application
  • A kind of rosin-based thiolated polyvinyl chloride comb polymer and its preparation method and application

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Embodiment 1

[0031] In the embodiment of the present invention, the synthetic method of the polyvinyl chloride comb polymer of dehydroabietyl mercaptan needs to go through the following process: 2 Under protection, 30g of dehydroabietyl mercaptan was added into the sodium methoxide-methanol system (methanol 100mL) at a molar ratio of 1:1 to sodium methoxide, and stirred under reflux at 70°C for 10h. After the reaction was completed, the solvent methanol was distilled off under reduced pressure. A crude product of sodium dehydroabietyl mercaptide was obtained. The crude product was repeatedly washed with petroleum ether to remove unreacted mercaptan, filtered, and vacuum-dried at 60°C for 4 hours to obtain a yellowish solid of sodium dehydroabietyl mercaptan. in N 2 Under protection, dissolve PVC in THF, add sodium dehydroabietyl mercaptan with a molar ratio of 0.2 to chlorine atoms, react at 50°C for 4 hours, and the reaction is over, pour the mixture into methanol to precipitate and wash...

Embodiment 2

[0034] In the embodiment of the present invention, the synthetic method of the polyvinyl chloride comb polymer of dehydroabietyl mercaptan needs to go through the following process: 2 Under protection, add 30g of dehydroabietyl mercaptan into the sodium ethoxide-ethanol (100 mL of ethanol) system at a molar ratio of 1:1 to sodium ethoxide, and reflux and stir at 70°C for 10 hours. After the reaction, the solvent ethanol is distilled off under reduced pressure , to obtain the crude product of sodium dehydroabietyl mercaptide. The crude product was repeatedly washed with petroleum ether to remove unreacted mercaptan, filtered, and vacuum-dried at 60°C for 4 hours to obtain a yellowish solid of sodium dehydroabietyl mercaptan. in N 2Under protection, dissolve PVC in THF, add sodium dehydroabietyl mercaptan with a molar ratio of 0.5 to chlorine atoms, react at 50°C for 6 hours, and the reaction ends. Drying for 24 hours under the hood to obtain a white solid dehydroabietyl-thiol...

Embodiment 3

[0037] In the embodiment of the present invention, the synthetic method of the polyvinyl chloride comb polymer of hydrogenated rosin-based mercaptan needs to go through the following process: 2 Under protection, add 30g of hydrogenated abietyl mercaptan into the sodium carbonate-cyclohexanone (cyclohexanone 100mL) system at a molar ratio of 1:1 to sodium carbonate, stir at 100°C for 10h, and distill off under reduced pressure after the reaction Solvent cyclohexanone to obtain the crude product of hydrogenated abietyl mercaptan sodium. The crude product was repeatedly washed with petroleum ether several times to remove unreacted mercaptan, filtered, and vacuum-dried at 60°C for 4 hours to obtain a white-yellow hydrogenated abietyl sodium mercaptide solid. in N 2 Under protection, dissolve PVC in THF, add sodium hydrogenated abietyl mercaptide with a molar ratio of 1 to chlorine atom, react at 50°C for 6 hours, and the reaction ends. After drying for 24 hours, a hydrogenated r...

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Abstract

The invention relates to an abietyl thiolated polyvinyl chloride comb-like polymer and a preparation method and an application thereof. The abietyl thiolated polyvinyl chloride comb-like polymer takesa derivative of high-quality resource rosin as a raw material, the derivative is reacted with halogenated propylene, and then the material and dithioglycol are subjected to synthesis through a clickreaction. The different amounts of abietyl mercaptan in an alkalescence system are grafted to PVC molecular chain to obtain the abietyl thiolated polyvinyl chloride comb-like polymer having differentgrafting rates. A abietyl group is mounted into the PVC molecular chain, the effect between the PVC high molecular chains is reduced, the main chain realizes better flowing, and a purpose of plasticizing PVC is achieved. The method reduces the glass-transition temperature of a PVC product to the temperature of 34.40 DEG C, the fracture percentage elongation can achieve 474.99%, and no plasticizermigration is generated in distilled water, an acid / alkali solution, plant oil, mineral oil and an organic solvent.

Description

technical field [0001] The invention relates to the chemical modification of polymer chemical materials, in particular to a rosin-based mercaptanized polyvinyl chloride comb polymer and its preparation method and application. Background technique [0002] Polyvinyl chloride (PVC) is one of the most used plastics in the world and is widely used in construction materials, medical equipment, household appliances and other fields. Due to the strong interaction between polyvinyl chloride molecular chains, a large amount of plasticizer needs to be added during processing to reduce the interaction between macromolecular chains, so as to improve the processing performance and soften the product. Phthalates are the most widely used plasticizers in industry. Due to the low molecular weight of phthalates, their volatility resistance and solvent extraction resistance are relatively poor, and they are easily absorbed and accumulated in the human body, causing teratogenic and carcinogeni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/34C08F114/06C08L27/06C08L27/22
CPCC08F8/34C08L27/06C08L2201/08C08L2205/02C08F114/06C08L27/22
Inventor 周永红宋飞贾普友胡立红张猛
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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