Four-in-one seat
An all-in-one, seat technology, applied to chairs, other seating furniture, stools, etc., can solve the problems of easy rotation of small tables and unsatisfactory application effects, and achieve improved stability, space saving, and convenient use. Effect
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Embodiment 1
[0054] Weigh 13.1g of dibromoneopentyl glycol, 10.1g of triethylamine and 100mL of acetone into a three-necked flask, add 9.2g of phenylphosphonic dichloride dropwise under ice bath, nitrogen protection and magnetic stirring, and dropwise add Then continue to react for 4 hours; after the reaction, remove the triethylamine salt by filtration, dichloromethane is added after the filtrate is distilled off under reduced pressure, and washed three times with saturated saline and deionized water successively, and the organic phase is washed with anhydrous magnesium sulfate After drying for 4 hours, the solvent was distilled off under reduced pressure to obtain a light yellow viscous liquid bromine-containing halogenated polyorganophosphoric ester polyol. After experimental detection, Mn: 2500g / mol (GPC), PDI = 1.7; hydroxyl value = 51.4mgKOH / g.
Embodiment 2
[0056] Weigh 8.65g of dichloroneopentyl glycol, 10.1g of triethylamine and 100mL of acetone into a three-necked flask, add 9g of phenylphosphonic dichloride dropwise under ice bath, nitrogen protection and magnetic stirring, after the dropwise addition Continue the reaction for 4 hours; after the reaction, remove the triethylamine salt by filtration, distill the filtrate under reduced pressure to remove the solvent, add dichloromethane, and wash with saturated saline and deionized water three times in turn, and dry the organic phase with anhydrous magnesium sulfate After 4 hours, the solvent was distilled off under reduced pressure to obtain light yellow chlorine-containing halogenated polyorganophosphoric ester polyol. After experimental detection, Mn: 2100g / mol (GPC), PDI = 1.6; hydroxyl value = 57.2mgKOH / g.
Embodiment 3
[0058] Weigh 7.75g of 3-bromo-1,2-propanediol, 10.1g of triethylamine and 100mL of acetone into a three-necked flask, add 9.0g of phenylphosphonic dichloride dropwise under ice bath, nitrogen protection and magnetic stirring, dropwise After the addition, the reaction was continued for 4 hours; after the reaction, the triethylamine salt was removed by filtration, the filtrate was evaporated under reduced pressure to remove the solvent, and dichloromethane was added, and washed three times with saturated saline and deionized water successively, and the organic phase was washed with anhydrous After drying over magnesium sulfate for 4 hours, the solvent was distilled off under reduced pressure to obtain light yellow bromine-containing halogenated polyorganophosphorous ester polyol. After experimental detection, Mn: 2300g / mol (GPC), PDI = 1.8; hydroxyl value = 55.3mgKOH / g.
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