Unlock instant, AI-driven research and patent intelligence for your innovation.

Production process of polyether ketone ketone

A production process, polyether ketone ketone technology, applied in the field of polymer synthesis, can solve the problems of impact strength reduction, polymer brittleness, slow reaction speed, etc., and achieve the best impact performance, high intrinsic viscosity, and uniform temperature.

Active Publication Date: 2021-09-28
SHANDONG KAISHENG NEW MATERIALS +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) Aluminum trichloride is not easy to disperse evenly, especially in industrial products containing larger lumps, which easily leads to fast reaction speed and high reaction conversion rate in places with high content of aluminum trichloride. Where the aluminum content is low, the reaction speed is slow and the reaction conversion rate is low, resulting in uneven and wide distribution of molecular weight
[0007] (2) If the Lewis acid / Lewis base catalyst system is added first during the reaction, and then the monomer is added dropwise, then at the initial stage of dropping the monomer, due to the large amount of solution, a "false dilution" will be formed around the monomer solution, it is easy to generate ring-shaped small molecular substances, and these small molecule rings will make the prepared polymer brittle, with reduced impact strength and low elongation at break

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production process of polyether ketone ketone
  • Production process of polyether ketone ketone
  • Production process of polyether ketone ketone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A kind of technology of polyether ketone ketone, comprises the following steps:

[0059] (1) Add 160kg of aluminum trichloride to the mixing kettle, then add 200L of liquid sulfur dioxide, control the temperature in the mixing kettle to be lower than -20°C, after stirring for 2 hours, the aluminum trichloride is completely dissolved in the sulfur dioxide, and the mixing kettle is uniform Aluminum trichloride in sulfur dioxide solution;

[0060] (2) Add 270L of dichloromethane solution into the reactor, then cool down to -5°C;

[0061] (3) To keep the temperature in the reactor not exceeding -5°C, add 38.98 kg of terephthaloyl chloride, 9.74 kg of isophthaloyl chloride, 41.25 kg of diphenyl ether and 0.67 kg of benzoyl chloride into the reactor.

[0062] (4) Keep the temperature in the reactor not exceeding -5°C, and add 35.43kg of N,N-dimethylformamide into the reactor;

[0063] (5) Keep the temperature in the reaction kettle not exceeding -5°C, add the sulfur dioxide...

Embodiment 2

[0067] A kind of technology of polyether ketone ketone, comprises the following steps:

[0068] (1) Add 160kg of aluminum trichloride to the mixing kettle, then add 200L of liquid sulfur dioxide, control the temperature in the mixing kettle to be lower than -20°C, after stirring for 2 hours, the aluminum trichloride is completely dissolved in the sulfur dioxide, and the mixing kettle is uniform Aluminum trichloride in sulfur dioxide solution;

[0069] (2) Add 270L of dichloromethane solution into the reactor, then cool down to -10°C;

[0070] (3) To keep the temperature in the reactor not exceeding -5°C, add 34.11kg of terephthaloyl chloride, 14.62kg of isophthaloyl chloride, 41.25kg of diphenyl ether and 0.67kg of benzoyl chloride into the reactor respectively.

[0071] (4) Keep the temperature in the reactor not exceeding -5°C, and add 35.43kg of N,N-dimethylformamide into the reactor;

[0072] (5) Keep the temperature in the reaction kettle not exceeding -5°C, add the sul...

Embodiment 3

[0076] A kind of technology of polyether ketone ketone, comprises the following steps:

[0077] (1) Add 160kg of aluminum trichloride to the mixing kettle, then add 200L of liquid sulfur dioxide, control the temperature in the mixing kettle to be lower than -20°C, after stirring for 2 hours, the aluminum trichloride is completely dissolved in the sulfur dioxide, and the mixing kettle is uniform Aluminum trichloride in sulfur dioxide solution;

[0078] (2) Add 270L of dichloromethane solution into the reactor, then cool down to -8°C;

[0079] (3) To keep the temperature in the reactor not exceeding -5°C, add 29.23kg of terephthaloyl chloride, 19.48kg of isophthaloyl chloride, 41.25kg of diphenyl ether and 0.67kg of benzoyl chloride into the reactor respectively.

[0080] (4) Keep the temperature in the reactor not exceeding -5°C, and add 35.43kg of N,N-dimethylformamide into the reactor;

[0081] (5) Keep the temperature in the reaction kettle not exceeding -5°C, add the sulf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of polymer synthesis, and in particular relates to a production process of polyether ketone ketone. The monomer and the Lewis base are first added to the reaction kettle, and then the anhydrous aluminum trichloride dissolved in sulfur dioxide is added dropwise to the reaction kettle. The added aluminum trichloride, a part is complexed with the Lewis base, a part is complexed with the carbonyl on the acid chloride, and a part acts as a catalyst. These three reactions are all exothermic reactions, and the heat promotes the gasification of sulfur dioxide to become a gas and leave the reaction system , the heat absorbed by gasification offsets the heat released by adding a part of aluminum trichloride, so that the temperature inside the reaction kettle is uniform at the initial stage of the reaction, and the occurrence of side reactions is reduced. In addition, the monomer is added to the reaction bottle before the reaction starts, the concentration of the monomer is the largest at the beginning of the reaction, there is no "false dilution" state, and the formation of small molecule cyclic polymers is reduced, and the produced polyether ketone Ketones have better impact properties, better toughness and higher intrinsic viscosity.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to a production process of polyether ketone ketone. Background technique [0002] Polyether ketone ketone (PEKK) resin is a special engineering plastic with excellent performance, which belongs to a kind of polyarylether ketone. Highly stable chemical bond characteristics make it have excellent mechanical properties, radiation resistance, high temperature resistance, chemical corrosion resistance, good electrical insulation and flame retardancy, and can be processed by extrusion, injection molding, molding and other processing methods , which has extremely high application requirements in aerospace, electrical and electronic, automotive and petroleum. [0003] [0004] At present, there are many synthetic methods of polyether ketone ketone reported in the literature, but the real commercial method mainly contains the following two kinds, one is the two-step...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12
CPCC08G61/127C08G2261/3442
Inventor 李光辉黄桂青孙庆民王荣海张聪聪薛居强
Owner SHANDONG KAISHENG NEW MATERIALS