Aromatic polysulfone and aromatic polysulfone composition

Patent metadata

Field	Value
Publication number	US-10899889-B2
Application number	US-201716311220-A
Country	US
Kind code	B2
Filing date	Jun 21, 2017
Priority date	Jun 24, 2016
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

The invention provides an aromatic polysulfone including an aromatic polysulfone having at least one highly polar functional group at its terminus, wherein in the aromatic polysulfone, an area of a signal attributed to the aromatic polysulfone having a highly polar functional group with respect to a total area of all signals attributed to the aromatic polysulfone in a chromatogram obtained by measurement through a gel permeation chromatography method under the following conditions is 0.1% or more and 11% or less, wherein the sample injection volume is 5 μL, column is “Shodex KF-803” manufactured by Showa Denko K.K., column temperature is 40° C., eluent is N,N-dimethylformamide, eluent flow rate is 0.5 mL/min, detector is ultraviolet-visible spectrophotometer (UV), and detection wavelength is 277 nm.

First claim

The invention claimed is:

1. An aromatic polysulfone comprising an aromatic polysulfone having at least one highly polar functional group at its terminus,
wherein the highly polar functional group is a polar functional group having an acid dissociation constant smaller than that of a carboxyl group, and
wherein in said aromatic polysulfone, an area of a signal attributed to said aromatic polysulfone having a highly polar functional group with respect to a total area of all signals attributed to said aromatic polysulfone is 0.1% or more and 11% or less in a chromatogram obtained through a gel permeation chromatography method.

2. The aromatic polysulfone according to claim 1 , which comprises a repeating unit represented by a formula (1),
-Ph 1 -SO 2 -Ph 2 -O—  (1)

wherein Ph 1 and Ph 2 each independently represent a phenylene group, and one or more hydrogen atoms in said phenylene group may be each independently substituted with an alkyl group, an aryl group or a halogen atom.

3. The aromatic polysulfone according to claim 2 , which comprises 0.5 to 10 phenolic hydroxyl groups per 100 repeating units represented by said formula (1).

4. An aromatic polysulfone composition comprising the aromatic polysulfone according to claim 1 .

5. The aromatic polysulfone composition according to claim 4 , further comprising a filler.

Assignees

• Sumitomo Chemical Co

Inventors

• Ito Kazuyuki
• Shoda Yoshio

Classifications

• G01N30/8634

  Peak quality criteria · CPC title

• C08L71/00 Primary

  Compositions of polyethers obtained by reactions forming an ether link in the main chain (of polyacetals C08L59/00; of epoxy resins C08L63/00; of polythioether-ethers C08L81/02; of polyether-sulfones C08L81/06); Compositions of derivatives of such polymers · CPC title

• C08G75/23 Primary

  Polyethersulfones · CPC title

• C08G65/4056

  (I) or (II) containing sulfur (as the sulfone group C08G75/23) · CPC title

• C08G65/46

  Post-polymerisation treatment, e.g. recovery, purification, drying · CPC title