Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Aqueous polyimide precursor solution composition and method for producing aqueous polyimide precursor solution composition

a technology of precursor solution and polyimide, which is applied in the direction of electrode collector coating, electrical equipment, electrode manufacturing process, etc., can solve the problems of limited application, high cost, and inability to meet the requirements of environmental protection, and achieve excellent environmental acceptability, high molecular weight, and good environmental acceptability.

Inactive Publication Date: 2014-08-07
UBE IND LTD
View PDF4 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an aqueous polyimide precursor solution composition that can be used to produce a polyimide with excellent properties such as flexibility, heat resistance, mechanical strength, electrical properties, and solvent resistance. This composition has good environmental acceptability and can be used as a binder resin composition for electrodes in electrochemical devices such as batteries. Additionally, the invention provides a polyimide precursor resin composition for flexible device substrates that can be used to produce a flexible device with excellent properties such as flexibility, heat resistance, mechanical strength, electrical properties, and solvent resistance.

Problems solved by technology

The polyamic acid solution composition to produce a polyimide contains an organic solvent and must be subjected to heat treatment at a high temperature, and therefore the polyamic acid solution composition is not necessarily environmentally friendly and in some cases, its application is limited.
Thus, extremely complicated operations are needed.
Moreover, an organic solvent cannot be completely removed from a water-soluble polyimide precursor prepared in the organic solvent.
That is, in a battery environment, a liquid electrolyte will contain lithium methoxide, which is strongly alkaline and may adversely affect a binder resin.

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
  • Aqueous polyimide precursor solution composition and method for producing aqueous polyimide precursor solution composition
  • Aqueous polyimide precursor solution composition and method for producing aqueous polyimide precursor solution composition
  • Aqueous polyimide precursor solution composition and method for producing aqueous polyimide precursor solution composition

Examples

Experimental program
Comparison scheme
Effect test

examples

[0189]Hereinafter, the present invention will be more specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

[0190]The methods for measuring the properties, which was used in the following examples, will be described below.

[0191]A sample solution (the weight is referred to as “w1”) was heated at 120° C. for 10 minutes, 250° C. for 10 minutes, and then 350° C. for 30 minutes in a hot air dryer, and the weight of the sample after the heat treatment (the weight is referred to as “w2”) was measured. The solid content [wt %] was calculated by the following formula.

Solid content[wt %]=(w2 / w1)×100

[0192]A sample solution was diluted to a concentration of 0.5 g / dl based on the solid content (the solvent: water). The flowing time (T1) of the diluted solution was measured at 30° C. using a Cannon-Fenske viscometer No. 100. The inherent viscosity was calculated by the following formula using the flowing time (T0) of...

example a1

[0205]In a 500 mL (internal volume) glass reaction vessel equipped with a stirrer and a nitrogen-gas charging / discharge tube was placed 400 g of water as a solvent. And then, 16.03 g (0.148 mol) of PPD and 11.29 g (0.099 mol) of t-CHDA, and 59.38 g (1.25 equivalents per carboxyl group) of 1,2-DMZ were added thereto, and the mixture was stirred at 25° C. for 1 hour to dissolve these compounds in water. Subsequently, 72.68 g (0.247 mol) of s-BPDA was added to the resulting solution, and the mixture was stirred at 70° C. for 6 hours to provide an aqueous polyimide precursor solution having a solid content of 16.7 wt %, a solution viscosity of 27.2 Pa·s, and an inherent viscosity of 1.04.

[0206]The properties of the aqueous polyimide precursor solution composition and the polyimide film obtained are shown in Table 1.

example a2

[0207]In a 500 mL (internal volume) glass reaction vessel equipped with a stirrer and a nitrogen-gas charging / discharge tube was placed 400 g of water as a solvent. And then, 21.63 g (0.108 mol) of ODA and 7.98 g (0.046 mol) of DMD, and 37.09 g (1.25 equivalents per carboxyl group) of 1,2-DMZ were added thereto, and the mixture was stirred at 25° C. for 1 hour to dissolve these compounds in water. Subsequently, 45.40 g (0.154 mol) of s-BPDA was added to the resulting solution, and the mixture was stirred at 70° C. for 6 hours to provide an aqueous polyimide precursor solution having a solid content of 13.0 wt %, a solution viscosity of 54.5 Pa·s, and an inherent viscosity of 0.28.

[0208]The properties of the aqueous polyimide precursor solution composition and the polyimide film obtained are shown in Table 1.

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

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Densityaaaaaaaaaa
Substance countaaaaaaaaaa
Login to View More

Abstract

An aqueous polyimide precursor solution composition, in which a polyamic acid, which is formed by the reaction of a tetracarboxylic acid component and a diamine component, is dissolved in an aqueous solvent together with an imidazole in an amount of 1.6 mole or more per mole of the tetracarboxylic acid component of the polyamic acid.

Description

TECHNICAL FIELD[0001]The present invention relates to an aqueous polyimide precursor solution composition and a method for easily producing an aqueous polyimide precursor solution composition. The aqueous polyimide precursor solution composition is preferred because of having high environmental acceptability as compared with a polyimide precursor solution composition comprising an organic solvent. The production method of the present invention does not require any solvent other than water, and therefore it may provide an aqueous polyimide precursor solution composition having a lower content of organic solvent than the conventional compositions, and may provide an aqueous polyimide precursor solution composition containing an aqueous solvent and containing no organic solvent, which has higher environmental acceptability. In addition, a polyimide may be suitably obtained from the aqueous polyimide precursor solution composition. A polyimide obtained from a specific aqueous polyimide ...

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
IPC IPC(8): C09D179/08H01M4/62H05K3/00H05K1/02
CPCC09D179/08H05K3/007H01M4/623H05K1/028C08G73/1021C08L79/08G02F1/133305C08G73/1032C08G73/1046C08G73/105C08G73/1071C08G73/1078C08G73/1082C08G73/128C09D179/085H01M4/0404H01M4/0471H01M4/622H01M10/0525
Inventor NAKAYAMA, TAKESHIGETAKASAKI, SUSUMUNAKAYAMA, TOMONORIHIROSHIGE, KENSUKE
Owner UBE IND LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com