TH69381A - Methods for the production of polycarbonate - Google Patents

Abstract

DC60 (24/11/47) Integrated method for the production of aromatic polycarbonate, including the steps of: (1) formation of a liquid mixture of acetone and diphenyl carbonate; (2) transport of the liquid mixture of step (1) to the polycarbonate production plant; (3) separation of diphenyl carbonate from acetone in the liquid mixture at the polycarbonate production plant; (4) reaction of diphenyl carbonate with bisphenol acetone to produce polycarbonate, by releasing phenol; (5) reaction of phenol of step (4) with acetone of step (3) to produce bisphenol acetone; (6) use of bisphenol acetone of step (5) in the reaction of step (4). Revised 14/02/2017 Integrated method for the production of aromatic polycarbonate, including the steps of: (1) formation of a liquid mixture of acetone and diphenyl carbonate; (2) transport of the liquid mixture of step (1) to the polycarbonate production plant; (3) Separation of diphenyl carbonate from acetone in the liquid mixture in the polycarbonate production plant; (4) Reaction of diphenyl carbonate with bisphenol acetone to produce polycarbonate, by releasing phenol; (5) Reaction of the phenol of step (4) with the acetone of step (3) to produce bisphenol acetone; (6) Use of bisphenol acetone of step (5) in the reaction of step (4). -------------------------- The combined method for the production of aromatic polycarbonate includes the steps of: (1) Construction of the liquid mixture of acetone and diphenyl carbonate; (2) Transportation of the liquid mixture of step (1) to the polycarbonate production plant; (3) Separation of diphenyl carbonate from acetone in the liquid mixture in the polycarbonate production plant; (4) Reaction of diphenyl carbonate with bisphenol acetone. To produce polycarbonate, by releasing phenol; (5) Reaction of the phenol of step (4) with the acetone of step (3) to produce bisphenolacetone; (6) Use of bisphenolacetone of step (5) in the reaction of step (4). --------------------------------- Revised 12/04/2017 The combined method for the production of aromatic polycarbonate, includes the steps of: (1) Construction of a liquid mixture of acetone and diphenylcarbonate; (2) Transportation of the liquid mixture of step (1) to the polycarbonate production plant; (3) Separation of diphenylcarbonate from acetone in the liquid mixture at the polycarbonate production plant; (4) Reaction of diphenylcarbonate with bisphenolacetone to produce polycarbonate, by releasing phenol; (5) Reaction of the phenol of step (4) with the acetone of step (3) to produce bisphenolacetone; (6) Use of bisphenolacetone of step (5) in the reaction of step (4) ----------------------------

Claims (11)

Revised 14/02/2017 1. The combined method for the production of aromatic polycarbonate, including the steps of: (1) creation of a liquid mixture of acetone and diphenyl carbonate; (2) transport of the liquid mixture of step (1) to the polycarbonate production plant; (3) separation of diphenyl carbonate from acetone in the liquid mixture at the polycarbonate production plant; (4) reaction of diphenyl carbonate with bisphenol acetone to produce polycarbonate, by releasing phenol; (5) reaction of the phenol of step (4) with the acetone of step (3) to produce bisphenol acetone; (6) use of bisphenol acetone of step (5) in the reaction of step (4). 2. The method according to claim 1, where the molar ratio of acetone to diphenyl carbonate is 1. 1. The method under claim 2, where the molar ratio of acetone to diphenyl carbonate in step (1) is in the range of 0.5:1 to 7:1. 3. The method under claim 2, where the molar ratio of acetone to diphenyl carbonate in step (1) is in the range of 0.9:1 to 2:1. 4. Any one of the methods under claim 1 to 3, where the temperature in step 2 is in the range of 15 to 70 °C. 5. Any one of the methods under claim 1 to 4, where the diphenyl carbonate obtained in step (3) and used in step (4) is at most 3% by weight of acetone. 6. Any one of the methods under claim 1 to 5, where the liquid mixture of step (1) subsequently contains 0 to 10% by weight of phenol. 7. Any one of the methods under claim 1 to 6, where diphenyl carbonate The substance used in step (1) is obtained in a reaction consisting of steps of (i) reaction of olefin and oxidant to obtain the corresponding alkylene oxide, subsequently (ii) reaction of the resulting alkylene oxide with carbon dioxide to obtain cyclic alkylene carbonate, subsequently (iii) reaction of the resulting cyclic alkylene carbonate with methanol to obtain the corresponding dimethyl carbonate and alkylene glycol, and (iv) reaction of the resulting dimethyl carbonate with phenol to obtain diphenyl carbonate. 8. The method according to claim 7, where olefin is propylene, alkylene oxide is propylene oxide, cyclic carbonate is propylene carbonate, and alkylene glycol is monopropylene glycol. 9. Any one of the methods according to claims 1 through 8, where step (3) is performed by using a continuous film evaporation unit. 10. A liquid mixture of acetone and diphenyl carbonate for use in the production of aromatic polycarbonate. Where the molar ratio of acetone to diphenylcarbonate is in the range from 0.5:1 to 7:1. 11. Use of liquid mixtures of acetone and diphenylcarbonate in the production of aromatic polycarbonate, where the molar ratio of acetone to diphenylcarbonate in the liquid mixture is in the range from 0.5:1 to 7:1. ------------------- Revised 11/06/58 1. Integrated method for the production of aromatic polycarbonate, including the steps of: (1) formation of the liquid mixture of acetone and diphenylcarbonate; (2) transport of the liquid mixture of step (1) to the polycarbonate production plant; (3) separation of diphenylcarbonate from acetone in the liquid mixture at the plant. 1. The method according to claim 1, where the molar ratio of acetone to diphenyl carbonate in step (1) ranges from 0.5 : 1 to 7 : 1. 3. The method according to claim 1, where the molar ratio of acetone to diphenyl carbonate in step (1) ranges from 0.5 : 1 to 7 : 1. 4. Any of the methods under claims 1 to 3, where the temperature in step 2 is in the range of 15 to 70 °C. 5. Any of the methods under claims 1 to 4, where the diphenyl carbonate obtained in step (3) and used in step (4) is at its highest 3% by weight of acetone. 6. Any of the methods under claims 1 to 5, where the liquid mixture of step (1) is from 0 to 10% by weight of phenol. 7. Any of the methods under claims 1 to 6, where the diphenyl carbonate used in step (1) is obtained in a reaction consisting of steps (i) olefin reaction and (ii) Reaction of alkylene oxide with carbon dioxide yields cyclic alkylene carbonate, (iii) Reaction of cyclic alkylene carbonate with methanol yields dimethyl carbonate and its corresponding alkylene glycol, and (iv) Reaction of cyclic alkylene carbonate with methanol yields diphenyl carbonate. 8. Method according to claim 7, where olefin is propylene, alkylene oxide is propylene oxide, cyclic carbonate is propylene carbonate, and alkylene glycol is minopropylene glycol. 9. Any one of the methods according to claims 1 through 8, where step (3) is performed using a continuous film evaporation unit. 10. Liquid mixture of acetone and diphenyl carbonate for use in the production of aromatic polycarbonates. Where the molar ratio of acetone to diphenylcarbonate is in the range from 0.5:1 to 7:1. 11. Use of liquid mixtures of acetone and diphenylcarbonate in the production of aromatic polycarbonate, where the molar ratio of acetone to diphenylcarbonate in the liquid mixture is in the range from 0.5:1 to 7:1. --------------------------------------------------------------------------------------------------------- Revised 11/06/58 1. Integrated method for the production of aromatic polycarbonate, including the steps of: (1) formation of the liquid mixture of acetone and diphenylcarbonate; (2) transport of the liquid mixture of step (1) to the polycarbonate production plant; (3) separation of diphenylcarbonate from acetone in the liquid mixture at the plant. 1. The method according to claim 1, where the molar ratio of acetone to diphenyl carbonate in step (1) ranges from 0.5 : 1 to 7 : 1. 3. The method according to claim 1, where the molar ratio of acetone to diphenyl carbonate in step (1) ranges from 0.5 : 1 to 7 : 1. 4. Any of the methods under claims 1 to 3, where the temperature in step 2 is in the range of 15 to 70 °C. 5. Any of the methods under claims 1 to 4, where the diphenyl carbonate obtained in step (3) and used in step (4) is at its highest 3% by weight of acetone. 6. Any of the methods under claims 1 to 5, where the liquid mixture of step (1) is from 0 to 10% by weight of phenol. 7. Any of the methods under claims 1 to 6, where the diphenyl carbonate used in step (1) is obtained in a reaction consisting of steps (i) olefin reaction and (ii) Reaction of alkylene oxide with carbon dioxide yields cyclic alkylene carbonate, (iii) Reaction of cyclic alkylene carbonate with methanol yields dimethyl carbonate and its corresponding alkylene glycol, and (iv) Reaction of cyclic alkylene carbonate with methanol yields diphenyl carbonate. 8. Method according to claim 7, where olefin is propylene, alkylene oxide is propylene oxide, cyclic carbonate is propylene carbonate, and alkylene glycol is minopropylene glycol. 9. Any one of the methods according to claims 1 through 8, where step (3) is performed using a continuous film evaporation unit. 10. Liquid mixture of acetone and diphenyl carbonate for use in the production of aromatic polycarbonates. Where the molar ratio of acetone to diphenylcarbonate is in the range from 0.5:1 to 7:1. 11. Use of liquid mixtures of acetone and diphenylcarbonate in the production of aromatic polycarbonates, where the molar ratio of acetone to diphenylcarbonate in the liquid mixture is in the range from 0.5:1 to 7:1. --------------------------------------------------------------------------------------------------------- 1. Integrated methods for the production of aromatic polycarbonates, including the steps of: (1) formation of the liquid mixture of acetone and diphenylcarbonate; (2) transport of the liquid mixture of step (1) to the polycarbonate production plant; (3) separation of diphenylcarbonate from acetone in the liquid mixture at the polycarbonate production plant; (4) reaction of diphenylcarbonate with bisphenolacetone. To produce polycarbonate, by releasing phenol; (5) the reaction of the phenol of step (4) with the acetone of step (3) to produce bisphenolacetone; (6) the use of bisphenolacetone of step (5) in the reaction of step (4). 2. Method according to claim 1, by the molar ratio of acetone to diphenylcarbonate in step (1) ranges from 0.5 : 1 to 7 : 1. 3. Method according to claim 1, by the molar ratio of 4. Any of the methods under claims 1 to 3, where the temperature in step 2 is in the range from 15 to 70 °C. 5. Any of the methods under claims 1 to 4, where the diphenylcarbonate obtained in step (3) and used in step (4) is at its highest 3% by weight of acetone. 6. Any of the methods under claims 1 to 5, where the liquid mixture of step (1) is at its highest range from 0 to 10% by weight of phenol. 7. Any of the methods under claims 1 to 6, where the diphenylcarbonate used in step (1) is obtained. The reaction consists of the following steps: (i) reaction of olefin and oxidant to produce corresponding alkylene oxide, followed by (ii) reaction of alkylene oxide with carbon dioxide to produce cyclic alkylene carbonate, followed by (iii) reaction of cyclic alkylene carbonate with methanol to produce corresponding dimethyl carbonate and alkylene glycol, and (iv) reaction of dimethyl carbonate with phenol to produce diphenyl carbonate. 8. Method according to claim 7, where olefin is propylene, alkylene oxide is propylene oxide, cyclic carbonate is propylene carbonate, and alkylene glycol is monopropylene glycol. 9. Any one of the methods according to claims 1 through 8, where step (3) is performed using a continuous film evaporator unit. ---------------------- 12/04/2560 1. The combined method for the production of aromatic polycarbonate includes the following steps: (1) creation of a liquid mixture of acetone and diphenyl carbonate; (2) transport of the liquid mixture of step (1) to the polycarbonate production plant; (3) separation of diphenyl carbonate from acetone in the liquid mixture at the polycarbonate production plant; (4) reaction of diphenyl carbonate with bisphenol acetone to produce polycarbonate, by releasing phenol; (5) reaction of the phenol of step (4) with the acetone of step (3) to produce bisphenol acetone; (6) use of the bisphenol acetone of step (5) in the reaction of step (4). 2. The method according to claim 1, where the molar ratio of acetone to diphenyl carbonate in step (1) is in the range from 0.5:1 to 7:1. 3. The method according to claim 2, where the molar ratio of acetone to diphenyl carbonate in step (1) is in the range of 0.9:1 to 2:1. 4. Any of the methods under claims 1 through 3, where the temperature during step 2 is between 15 and 70°C. 5. Any of the methods under claims 1 through 4, where the diphenyl carbonate obtained in step (3) and used in step (4) is at most 3% by weight of acetone. 6. Any of the methods under claims 1 through 5, where the liquid mixture of step (1) subsequently contains from 0 to 10% by weight of phenol. 7. Any of the methods under claims 1 through 6, where the diphenyl carbonate used in step (1) is obtained in a reaction consisting of (i) an olefin and oxidant reaction to obtain the corresponding alkylene oxide, followed by (ii) a reaction of the resulting alkylene oxide with carbon dioxide to obtain cyclic alkylene carbonate, followed by (iii) a reaction of the resulting cyclic alkylene carbonate with methanol to obtain the corresponding dimethyl carbonate and alkylene glycol, and (iv) a reaction of the resulting dimethyl carbonate with phenol to obtain diphenyl carbonate. 8. The method under claim 7, where olefin is propylene, alkylene oxide is propylene oxide, cyclic carbonate is propylene carbonate, and alkylene glycol is monopropylene glycol. 9. Any of the methods under claims 1 through 8, where step (3) is performed by using a continuous film evaporation unit. 10. Liquid mixtures of acetone and diphenyl carbonate for use in the production of aromatic polycarbonates, where the molar ratio of acetone to diphenyl carbonate ranges from 0.5:1 to 7:1. 11. The use of liquid mixtures of acetone and diphenyl carbonate in the production of aromatic polycarbonate, where the molar ratio of acetone to diphenyl carbonate in the liquid mixture ranges from 0.5:1 to 7:1.