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A kind of polycarbonate antioxidant, preparation method and a kind of polycarbonate composition

A technology of polycarbonate and antioxidant, which is applied in the field of polycarbonate antioxidant, preparation, and polycarbonate composition, can solve the problems of low antioxidant use efficiency and increased production cost, and achieve good antioxidant capacity, Reduced dosage and high efficiency

Active Publication Date: 2022-02-18
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of a high amount of antioxidants shows that the use efficiency of the existing antioxidants is low, which undoubtedly greatly increases the production cost. Therefore, in order to meet the high requirements of downstream applications for the anti-oxidative degradation ability of polycarbonate under high temperature conditions, a new type of antioxidant is developed. Antioxidant to improve antioxidation efficiency has become an urgent problem for polycarbonate manufacturers

Method used

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  • A kind of polycarbonate antioxidant, preparation method and a kind of polycarbonate composition
  • A kind of polycarbonate antioxidant, preparation method and a kind of polycarbonate composition
  • A kind of polycarbonate antioxidant, preparation method and a kind of polycarbonate composition

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A reactor of acetonitrile (10 mL) and phosphite (4.68 g, 20 mmol) was added sequentially, and sodium hydrogen fluid was added to the reactor multiple times. (0.576 g, 24mmol), the temperature of the reaction system is 60 ° C, after the sodium hydrogen fluid is completely dissolved, the temperature to the boiling point of the acetonitrile is 80 ° C for reflux, after which 25 ml of constant voltage drops can be applied, dripped from the constant pressure droplet funnel into isocyanic acid Phenyl ester (4.28 g, 36 mmol) 10 ml acetonitrile solution, reflux reaction 2H, filtrate, filtrate, evaporate the solvent in the filtrator to give a crude product. The resulting crude product was recrystallized with acetonitrile to extract the white solid in which the polycarbonate antioxidant A was 6.78 g, and the yield was 96%. The reaction is as follows:

[0037]

[0038] 1 H NMR (CDCL 3 500MHz): Δ9.08-9.22 (m, 1H), 7.58-7.62 (m, 2H), 7.25-7.32 (M, 4H), 7.15-7.22 (M, 7H) .

[0039] Then...

Embodiment 2

[0042] Toluene (10 mL) and phosphite (4.68 g, 20 mmol) were sequentially added to the reactor equipped with a thermometer, reflow the condensed tube, and constant pressure drops, and add sodium hydride to the reactor multiple times (0.96 g, 40 mmol), the control reaction system temperature is 95 ° C, and the temperature to the sodium hydrogen is completely dissolved, the temperature to the boiling point of the toluene is refluxed. After installing 25 ml of constant pressure drops, the solubility is dripped from the constant pressure droplet funnel. Phenocyanate (5.32 g, 40 mmol) 10 ml toluene solution, reflux reaction for 2 h, filtrate filtrate, and the solvent in the filtrator was evaporated to give a crude product. The resulting crude product was recrystallized with acetonitrile, and the white solid in which the polycarbonate antioxidant B was 6.75 g, and the yield was 92%. The reaction is as follows:

[0043]

[0044] 1 H NMR (CDCL 3500MHz): Δ9.11-9.32 (m, 1H), 7.02-7.32 (m, ...

Embodiment 3

[0047] Tetrahydrofuran (10 mL) and phosphite 2 oxoethylanter (5.24 g, 20 mmol) were sequentially added to reactors equipped with a thermometer, reflow the condensed tube, and constant voltage drops, which were added to the reactor to add potassium hydride into the reactor. 1.203g, 30 mmol), the temperature of the reaction system is 45 ° C, and the potassium to be hydrolyzed is completely dissolved, and the temperature to the boiling point of tetrahydrofuran is refluxed. After installing 25 ml of constant voltage drops, it is dripped from the constant pressure droplet funnel. The 10 ml of chlorocyanate (6.91 g, 45 mmol) of 10 ml of tetrahydrofuran, refluxed reaction 2H, filtrate, filtered, and the solvent in the filtrator was evaporated to give a crude product. The obtained crude product was recrystallized with acetonitrile, and the white solid in which the polycarbonate antioxidant was extracted, and the yield was 98%. The reaction is as follows:

[0048]

[0049] 1 H NMR (CDCL ...

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Abstract

The invention provides a polycarbonate antioxidant, a preparation method and a polycarbonate composition. The general structural formula of the antioxidant is as follows: the preparation method of the antioxidant is as follows: diaryl phosphite and alkali M is dissolved in solvent A; aromatic isocyanate is dissolved in solvent B; the above solutions are mixed and reacted to obtain arylamide substituted by diaryl phosphite. The preparation method of the invention is simple, easy to operate, and the product yield is high, which can avoid the introduction of impurities in the polycarbonate composition; the antioxidant has good oxidation resistance under air atmosphere and high temperature conditions, and is conducive to saving polycarbonate Production costs of ester compositions.

Description

Technical field [0001] The present invention relates to a polycarbonate antioxidant, and more particularly to a polycarbonate antioxidant, a preparation method, and a polycarbonate composition, which belongs to the technical field of chemical materials. Background technique [0002] Polycarbonate (referred to as PC) is a high molecular polymer containing a carbonate group in a molecular chain having highlighted impact resistance, creep resistance, high tensile strength, strong heat resistance and cold resistance. Excellent dielectric performance, good light transmissive performance, has become the fastest engineering plastics in the five major project plastics, which has a wide range of applications in the fields of optical, sheet metal parts, bulletproof glass, electronic and electronics. . [0003] However, in the downstream application of polycarbonate, it is often facing a high temperature environment under the air atmosphere, and the polycarbonate product prepared by existin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/40C08K5/5353C08L69/00
CPCC07F9/4084C07F9/4065C08K5/5353C08L69/00C08L2201/08
Inventor 孙永旭徐丹张钊王栋王亚辉王艳丽蒋尧尧贺信淳张宏科
Owner WANHUA CHEM GRP CO LTD
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