A kind of synthetic method of chloromethyl polystyrene resin
A technology of chloromethyl polystyrene and polystyrene resin, which is applied in the synthesis field of chloromethyl polystyrene resin, can solve the problems of health hazards for operators, unsuitable for long-term large-scale use, high toxicity, etc., and achieves environmental friendliness. , the effect of less toxicity and less toxic by-products
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Embodiment 1
[0020] Weigh the specific surface area as 75m 2 / g of polystyrene resin 26.5g; take 100g of methylal and 14g of concentrated hydrochloric acid, mix and heat distillation, and move the 60-105°C fraction to a three-necked reaction flask; place the three-necked reaction flask in an ice bath environment, and control the temperature to low At 15°C, add 38g of paraformaldehyde, 14g of concentrated hydrochloric acid with a mass fraction of ≥36% and 34.5g of concentrated sulfuric acid with a mass fraction of ≥98% into a three-necked reaction flask, stir and mix evenly; weigh the specific surface area of 75m 2 / g polystyrene resin 26.5g was added into a three-necked reaction flask, and left to swell for 1h. Within half an hour, anhydrous ferric chloride with a total mass of 8.33 g was added three times, stirred and dissolved completely. Heat to 40°C, drop 100g of chlorosulfonic acid at a rate of one drop every 3 seconds with a dropping funnel, and then keep it at 40°C for 48h to obt...
Embodiment 2
[0023] Weigh the surface area as 250m 2 26.5 g of polystyrene resin per g; take 79.5 g of methylal and 8.0 g of concentrated hydrochloric acid, mix and heat to distill, and move the fraction at 60-105°C to a three-necked reaction flask. Place the three-necked reaction bottle in an ice bath environment, control the temperature below 15°C, add 16.0g of paraformaldehyde, 8.0g of concentrated hydrochloric acid with a mass fraction of ≥36% and 16.0g of concentrated sulfuric acid with a mass fraction of ≥98% into the three-necked reaction bottle, stir to combine. The specific surface area to be weighed is 250m 2 26.5 g of polystyrene resin per g was added to the reaction flask, and left to swell for 1.5 h. Then within 10 minutes, anhydrous zinc chloride with a total mass of 5.3 g was added in three times on average, and stirred to dissolve completely. Then it was heated to 30°C, and 80.0 g of sulfone dichloride was added dropwise at a rate of one drop every 2 seconds with a dropp...
Embodiment 3
[0025] Weigh the specific surface area as 350m 2 / g of polystyrene resin 26.5g; take 132.5g of methylal and 35.0g of concentrated hydrochloric acid, mix and heat to distill, and move the fraction at 60-105°C to a three-necked reaction flask. Place the three-necked reaction bottle in an ice bath environment, control the temperature below 15°C, then add 66.0g of paraformaldehyde, 35.0g of concentrated hydrochloric acid with a mass fraction of ≥36% and 50.0g of concentrated sulfuric acid with a mass fraction of ≥98% into the three-necked reaction bottle In the reaction bottle, stir to mix well. The specific surface area to be weighed is 350m 2 / g polystyrene resin 26.5g was added into a three-necked reaction flask, and left to swell for 1.5h. Within 10 minutes, add anhydrous aluminum chloride with a total mass of 5.8 g three times, and stir to dissolve completely. Then it was heated to 35°C, and 125.5g of sulfone dichloride was added dropwise at a rate of one drop every 3 seco...
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