US 2020/0399425 A1 · METHOD FOR PRODUCING POLYARYLETHERKETONE

Abstract

Provided is a method that can stably produce polyaryletherketone that has a high degree of polymerization and can be easily recovered. The method for producing polyaryletherketone includes: a polycondensation step of carrying out desalting polycondensation in a reaction solvent; and a cooling step of cooling a reaction mixture after desalting polycondensation is completed. When the method is implemented, the polycondensation step is carried out in a hydrophilic solvent under pressurized conditions, and the polymerization temperature in the polycondensation step is at or above the boiling point of the hydrophilic solvent at ambient pressure. In addition, the polymer content in terms of monomers at the time of cooling in the cooling step is from 1 part by mass to 50 parts by mass, per 100 parts by mass of the hydrophilic solvent in the reaction mixture.

Claims8

Dependent claims

A method for producing polyaryletherketone, the method comprising:

a polycondensation step of carrying out desalting polycondensation in a reaction solvent;
and
a cooling step of cooling a reaction mixture obtained in the polycondensation step after completion of the desalting polycondensation;
the polycondensation step being carried out in a hydrophilic solvent under pressurized conditions;
a polymerization temperature in the polycondensation step being at or above the boiling point of the hydrophilic solvent at ambient pressure;
and
a polymer content in terms of monomers at the time of cooling in the cooling step being from 1 part by mass to 50 parts by mass, per 100 parts by mass of the hydrophilic solvent in the reaction mixture.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/314,537Filed 11 Oct 2018

Priority

JP 2017-19871812 Oct 2017

Published

24 Dec 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C08G 65/4012
From phenols and other compounds , e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group: other compound containing a ketone group,…
C08G 65/4093
From phenols and other compounds , e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group: characterised by the process or apparatus used
C08G 65/46
From hydroxy compounds or their metallic derivatives: post-polymerisation treatment, e.g. recovery, purification, drying
C08K 5/3415
Having one nitrogen atom in the ring: five-membered rings

Method for producing polyaryletherketone

Life of this patent

Method for producing polyaryletherketone

Life of this patent

Abstract

Claims8