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Bisphenol compound and preparation method thereof, and polycarbonate composition prepared from bisphenol compound

A technology of phenolic compound and polycarbonate, which is applied in the field of bisphenolic compound and its preparation, can solve the problems of mechanical or thermal performance reduction, the balance between processability and original performance, etc., so as to improve flexibility, The effect of avoiding the decrease of glass transition temperature Tg and avoiding the loss of mechanical properties

Active Publication Date: 2015-05-20
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing technology can achieve the goal of improving processability to a certain extent through structural design, but no breakthrough has been made in the balance between processability and original performance. All means of improving processability have brought mechanical or thermal properties. Significant reduction of

Method used

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  • Bisphenol compound and preparation method thereof, and polycarbonate composition prepared from bisphenol compound
  • Bisphenol compound and preparation method thereof, and polycarbonate composition prepared from bisphenol compound
  • Bisphenol compound and preparation method thereof, and polycarbonate composition prepared from bisphenol compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Synthetic bisphenol of formula (II) structure

[0058] In a 500ml three-necked flask, add 48.2g (0.2mol) 3-trifluoromethyl-4-bromophenol, 11.0g (0.1mol) p-diphenol, 27.6g (0.2mol) anhydrous potassium carbonate, 250ml dimethyl Formamide, the reaction system was stirred and reacted at 80° C. for 6 h under the protection of nitrogen. After cooling to room temperature, the reaction solution was poured into a mixed solution of dichloromethane and water, washed repeatedly with water, and the organic phase was separated, and the solvent was removed by rotary evaporation to obtain a crude product, which was recrystallized with ethanol to obtain 25.8 g of the target product.

[0059] Melting point: 137°C. H NMR spectrum (300MHz, CDCl 3 ): 5.33-5.35 (s, 2H), 6.89-6.92 (d, 2H), 7.07-7.10 (d, 2H), 7.32-7.35 (s, 2H), 7.39-7.42 (s, 4H).

Embodiment 2

[0061] Synthetic bisphenol of formula (III) structure

[0062] In a 500ml three-necked flask, add 35.6g (0.2mol) 3-hydroxy-5-trifluoromethylphenol, 23.5g (0.1mol) p-dibromobenzene, 27.6g (0.2mol) anhydrous potassium carbonate, 250ml dimethyl sulfoxide, and the reaction system was stirred and reacted at 100° C. for 4 h under the protection of nitrogen. Cool to room temperature, pour the reaction solution into a mixed solution of dichloromethane and water, wash repeatedly with water, separate the organic phase, and remove the dichloromethane solvent by rotary evaporation to obtain a crude product, which is recrystallized with ethyl acetate to obtain 38.7 g of the target product .

[0063] Melting point: 128°C. H NMR spectrum (300MHz, CDCl 3 ): 5.40-5.43 (s, 2H), 6.79-6.82 (s, 2H), 7.08-7.11 (s, 2H), 7.21-7.23 (s, 2H), 7.40-7.43 (s, 4H).

Embodiment 3

[0065] Synthesis of homopolycarbonates prepared from bisphenols of formula (II):

[0066] Add 339.6g of formula (II) structure bisphenol, 956.0g of water and 66.0g of sodium hydroxide respectively in the mixing tank, mix and dissolve to form sodium phenate salt water phase; add 85.0g of liquid phosgene and 1320.5g of dichloromethane, mixed to form the organic phase. The sodium phenoxide salt phase and the organic phase are injected into the photochemical reactor composed of a static mixer at a flow rate of 45.3g / min and 46.8g / min respectively, the reaction temperature is 30°C, and after staying for 1.5min, they enter the same static mixer In the coupling reactor that constitutes, pour into the reactor simultaneously that concentration is the dichloromethane solution of 5wt% p-tert-butylphenol, the dichloromethane solution that concentration is 1.5wt% triethylamine and the concentration is 30wt% Sodium hydroxide aqueous solution, the flow rates of the three are 1.28g / min, 0.7g...

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Abstract

The invention relates to a bisphenol compound and a preparation method thereof, and a polycarbonate composition containing a structural unit derived from the bisphenol compound and a preparation method thereof. The bisphenol compound structure contains a diphenyl oxide group and a trifluoromethyl substituent group on the benzene ring, which have a synergistic action. The polycarbonate composition prepared by an interfacial phosgene process or molten ester exchange process has the advantages of low shear viscosity and higher melt fluidity, and well pays attention to the balance between the workability and the thermal and mechanical properties.

Description

technical field [0001] The invention relates to a bisphenol compound and a preparation method thereof, and also to a polycarbonate composition, in particular to an aromatic polycarbonate composition with improved processing performance and good mechanical and thermal properties. Background technique [0002] Polycarbonate resins are widely used as molding materials for various molded products. For example, housing materials for consumer electronics such as mobile phones. With the thinning trend of consumer electronics products, the shell material is also becoming thinner and lighter. When molding such a thin and light material, the resin is required to have good fluidity so that it can flow smoothly in the mold, and at the same time ensure the mechanical properties of the material itself. Such as impact resistance is not affected. [0003] Conventional bisphenol A polycarbonate materials have high melt viscosity and difficulty in forming thin-walled products, which have be...

Claims

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Application Information

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IPC IPC(8): C07C43/295C07C41/16C08G64/24C08L69/00
CPCC07C41/16C07C41/34C08G64/24C08L69/00C07C43/295
Inventor 李诚宋晓菊刘应陈云张宏科
Owner WANHUA CHEM GRP CO LTD
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