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Method for purification of a biphenol tetraacid composition and a biphenol tetraacid composition

A technology of bisphenol tetraacid and composition, which is applied in the field of purifying bisphenol tetraacid composition and bisphenol tetraacid composition, and can solve problems such as difficulty in providing

Pending Publication Date: 2021-09-07
SABIC GLOBAL TECHNOLOGIEIS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It may be difficult to provide the desired aromatic tetraacids in high purity (e.g., free of residual alkali metals and their salts) using known methods

Method used

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  • Method for purification of a biphenol tetraacid composition and a biphenol tetraacid composition
  • Method for purification of a biphenol tetraacid composition and a biphenol tetraacid composition
  • Method for purification of a biphenol tetraacid composition and a biphenol tetraacid composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Materials used in the following examples are described in Table 1.

[0038] Table 1

[0039]

[0040]

[0041] In Examples 1 to 31 below, 3,3'-BPoTA with 95.2 to 96.8 wt% was treated with different alcohols, mixtures of alcohol and water, and mixtures of alcohol and o-DCB under different conditions of temperature, time and solids content and 3,4'-BPoTA (total amount, based on the total weight of the BPoTA composition) and bisphenol tetraacid (BPoTA) of 3.2 to 4.8% by weight of bisphenols. The composition of the BPoTA composition was determined by UPLC.

[0042] Ultra Performance Liquid Chromatography (UPLC) analyzes in the following examples were performed on a Waters ACQUITY UPLC BEH C18 1.7 μm 2.1 x 50 mm column at 35°C. PDA detection was performed at 232 nm with a flow rate of 0.313 mL / min. Gradient method with acetonitrile and acidic water (4L DI H 2 O+3mL 85%H 3 PO 4 ) with a dual-solvent system.

[0043] Residual levels of all metals (sodium, potassiu...

Embodiment 7 to 13

[0046] Examples 7 to 13 used a BPoTA composition of 93.98 mol% BPoTA isomer (95.72 wt%); 5.31 mol% (3.20 wt%) bisphenol as determined by HPLC at 232nm and 254nm.

Embodiment 2

[0050] A 500 mL beaker with a mechanical stirrer was charged with IPA (63 g) and then stirred at 175 rpm. The BPoTA composition (27.28 g, 27.0 g dry mass, 96.34% purity, 50.57 mmol) was then added in portions over 2 to 4 minutes. The mixture was stirred at ambient temperature for 60 minutes. Next, filter the slurry through a mesoporous glass funnel. The filter cake was washed with IPA (50 g) at ambient temperature without stirring. The orange filtrate was discarded, and the solid was further dried in a vacuum (0.4 inches Hg) oven at 60 to 70°C overnight to provide 25.11 g of a white solid in 96.5% yield. UPLC: 98.11 mol% BPoTA isomers; 0.49 mol% (0.26 wt%) bisphenol.

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Abstract

A method for purification of a biphenol tetraacid composition includes contacting the biphenol tetraacid composition with a solvent including a C1-6 alcohol to form a slurry and isolating the purified biphenol tetraacid from the slurry. The biphenol tetraacid composition includes a biphenol tetraacid and a biphenol. A purified biphenol tetraacid composition is also described.

Description

[0001] Citations to related applications [0002] This application claims the benefit of European Patent Application No. 19382065.1 filed on January 31, 2019, the entire content of which application is hereby incorporated by reference. Background technique [0003] Poly(imides) and poly(etherimides) (PEI) are high performance polymers with a glass transition temperature (Tg) greater than 180°C. These polymers also exhibit high strength, heat resistance and modulus, as well as broad chemical resistance. Poly(etherimides) are widely used in various applications such as automotive and electrical / electronic applications because these compositions provide good mechanical and thermal properties. [0004] Poly(etherimides) can be prepared, for example, by polycondensation of dianhydrides with diamines. High purity monomer components are required in order to obtain good reaction kinetics, achieve high molecular weights, and provide stable processable polymer products. Additionally,...

Claims

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Application Information

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IPC IPC(8): C07C51/02C07C51/42C07C65/24C07C63/331C07C51/47C08G73/10
CPCC07C51/47C08G73/1046C07C65/24C07C63/331C07C51/42
Inventor 詹姆斯·帕特里克·舒尔特二世胡安·胡斯蒂诺·罗德里格斯·奥尔多内斯
Owner SABIC GLOBAL TECHNOLOGIEIS BV
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