4-[2-(4-hydroxyphenyl)propan-2-yl]phenol

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: bis-phenols such as 2,2-bis(p-hydroxyphenyl)propane and bis-(p-hydroxyphenyl)methane

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 10.54 g of bisphenol A diglycidyl ether was heated to 70 C. under stirring and then 4.46 g acrylic acid was added slowly under nitrogen atmosphere. After maintaining the reaction at 70 C. for 2 hours, 13.0 g of 2-octen-1-ylsuccinic anhydride was added and then the temperature was raised to 80 C. under mechanical stirring. The reactants are stirred at 80 C. for 2-3 hours to complete the reaction. After maintaining the reaction at 70 C the temperature was raised to 80 C The reactants are stirred at 80 C for 2-3 hours to complete the reaction

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 1155 grams of dichloromethane and 493.5 grams of 1,1,2-trichloroethane was added 8.04 grams of 4-((4-dimethylaminophenyl)-2,6diphenyl)-6-phenyl thiapyrylium tetrafluoroboiate and 5.36 grams of 4-(4dimethylaminophenyl)-2-(4-ethoxyphenyl)-6-phenyl thiapyrylium tetrafluoroborate. The mixture was stirred mechanically for one hour; to the resulting solution was added 102 grams of high molecular weight bisphenol A polycarbonate, (Makrolon™ 5705 polycarbonate, obtained from Mobay Chemical Co.). After one houl additional stiiling, 238 grams of bisphenol A polycaibonate of lower molecular weight (Lexan 145™ polycarbonate, obtained from General Electric Co.) was added. The mixture was stirred ovemnight, then diluted with 211.5 grams of 1,1,2-tuichloroethane. The resulting slulTy was allowed to evaporate to dryness, and the residue was cut into small pieces. The high molecular weight polycarbonate referred to above was Makrolon 5705™ polycarbonate, obtained from Mobay Chemical Co. Its number average molecular weight, as determined by gel permeation chromatography, is 178,000 polystyrene equivalents. The low molecular weight polycarbonate above was Lexan 145™ polycarbonate, obtained from General Electric Co. Its number average molecular weight as determined by gel permeation chromatography is 51,600 polystyrene equivalents.

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Into a mixture of 272.4 parts by weight of 4,4'-dihydroxy diphenyl-2,2-propane (bisphenol A), 145 parts by weight of sodium hydroxide, 1045 parts by weight of deionized water, 1330 parts by weight (1.0 liter) of methylene chloride and 5.55 parts by weight p-tertbutylphenol, 150 parts by weight of carbonyl chloride were added over a period of 0.5 hour with stirring and at a temperature of 25° C. This resulted in solution of bisphenol A polycarbonate oligomers in methylene chloride at a concentration of about 23 percent by weight in the organic phase were added over a period of 0.5 hour

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Dimethyl terephthalate, dimethyl isophthalate, ethylene glycol, bisphenol A-ethylene oxide (2 mols) adduct, and manganese acetate were deposit into a reactor installed with a heater, a stirrer, a rectification column, a pressure-reducing device and a thermometer, as in Table 17, and gradually heated in a nitrogen atmosphere up to a temperature falling between 160 and 220° C. over a period of about 4 hours to effect interesterification, while removing ethanol through distillation. Then, this was subjected to polycondensation under a reduced pressure of from 0.5 to 5.0 mmHg at 260° C. for about 2 hours. Thus were obtained bisphenol A-added polyester resins b-1 to b-4 as in Table 17. Each of the thus-obtained, bisphenol A-added polyester resins was dissolved in a mixed solvent of cyclohexanone/Solvesso 150 (50/50, by weight) to prepare a resin solution having a nonvolatile content of 40%. The molecular weight of each bisphenol A-added polyester resin being produced was controlled by varying the polycondensation time. The number-average molecular weight of each resin was measured in terms of polystyrene, through gel permeation chromatography. a rectification column, a pressure-reducing device and a thermometer, as in Table 17, and gradually heated in a nitrogen atmosphere up to a temperature while removing ethanol through distillation Then, this was subjected to polycondensation under a reduced pressure of from 0.5 to 5.0 mmHg at 260° C. for about 2 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The mother liquor from the primary system contains water, acetone, impurities and residual BPA. This mother liquor is passed through preheaters into a flash chamber where the water, acetone and a portion of the phenol is flashed to a vapor. This vapor is fed to a distillation column for separating the water and acetone from the lower vapor pressure phenol. The bottoms stream from the flash chamber includes a concentration of impurities and residual BPA in a phenol carrier. From this stream, a small purge is taken to a catalytic decomposition zone where the phenol is distilled overhead and the BPA and impurities are cleaved at high temperature to form phenol and isopropenyl phenol. Phenol is recovered as raw material and recycled to the reaction zone. Uncleavable "heavies" and polymers are purged from the system as "tars." The balance of the flash pot bottoms stream is recycled to the reaction zone. This vapor is fed to a distillation column for separating the water and acetone from the lower vapor pressure phenol From this stream, a small purge is distilled overhead

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This invention uses 2,2-bis(3,5-dinitro-4-hydroxyphenyl) propane as a polymerization inhibitor. For the sake of convenience, this compound will also be called tetranitrobisphenol A. A method of synthesizing said compound is described in Stroganov et al, Zh. Org. Khim 1973, 9(8), 1713-17, and Smirnov and Stroganov USSR Pat. No. 237,860 (1969). Thus, 2,2-bis(4-hydroxyphenyl)propane is nitrated with a concentrated nitric acid (for instance 70% HNO3) in a suitable solvent such as dichloroethane to afford primarily 2,2-bis(4-hydroxy-3-nitro-phenyl)propane. A typical reaction condition for this step is 20°-30° C. for 2 hours. Without isolating the product, a mixture of sulfuric acid and nitric acid (for instance, 42% H2SO4, 50% HNO3, and 8% H2O) is added to the reaction mixture and nitration continued to afford tetranitrobisphenol A. A typical reaction condition for the second step is 40° C. for 2 hours. The desired product is isolated by a routine procedure. A method of synthesizing

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Phenol and acetone were passed through a column type reactor in which an ion exchange resin having a sulfonic group packed, in a molar ratio of phenol/acetone of 13, and a reaction solution of bisphenol A was obtained with 95% of conversion of acetone by a reaction at an inlet temperature of 55° C. and an outlet temperature of 75° C. Then, the above reaction solution was subjected to distillation to remove low boiling point substances such as unreacted acetone and water as a by-product, followed by crystallization at 50° C. by means of external intercooling to obtain a slurry containing an adduct crystal (adduct) comprising bisphenol A and phenol. The crystal adduct slurry was subjected to filtration under reduced pressure by means of a filter having a filter cloth with an aperture of 106 μm set thereto, while keeping the slurry temperature at 50° C., and the obtained crystal adduct cake was washed with refined phenol. The finally obtained adduct was a mixture with a composition of bisphenol A/phenol=7/3 (weight ratio). Impurities in the adduct at this stage were 2,4-bisphenol A=84 ppm, chroman-1=5 ppm and trisphenol=30 ppm, and no 4-isopropenyl phenol was detected. In order to hold the adduct in a molten state in a stock tank (made of SUS316) under conditions of the temperature and time as identified in Table 1, phenol was added to obtain a composition adjusted to have the composition as identified in Table 1. Then, the composition was held in a molten state under normal pressure under nitrogen sealing under conditions as identified in Table 1, and then the content of 4-isopropenyl phenol (IPP) contained in the composition was measured. The results are shown in Table 1.