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

Method for producing polyimide laminate and polyimide laminate

A technology of polyimide layer and pressed products, which is applied in the field of polyimide laminated products and its preparation, can solve the problems of reduced adhesion, reduced system vacuum, insufficient heat resistance, etc., and can inhibit thermal decomposition , Excellent heat resistance, high heat resistance effect

Active Publication Date: 2016-05-25
UBE IND LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Regarding the aromatic polyamide film, Patent Document 4 discloses that when an ITO thin film or the like is formed on the surface of the film by sputtering or the like, volatile components generated from the inside of the film may cause The reduction of system vacuum, and thus may reduce the efficiency of sputtering, and may hinder the normal deposition of ITO particles, resulting in reduced adhesion of the ITO film to the film and insufficient heat resistance, when the aromatic polyamide When the film is used as a substrate for liquid crystals and other components including liquid crystal elements, performance of liquid crystals and other components may deteriorate due to outgassing during use

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
  • Method for producing polyimide laminate and polyimide laminate
  • Method for producing polyimide laminate and polyimide laminate
  • Method for producing polyimide laminate and polyimide laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] In a 500 mL (internal volume) glass reactor equipped with a stirrer and nitrogen in / out tubes were placed 410.1267 g of N-methyl-2-pyrrolidone as a solvent. Then, 26.8886 g (0.2486 mol) of PPD and 73.1431 g (0.2486 mol) of s-BPDA were added thereto, and the mixture was stirred at 50° C. to provide a polyamic acid having a solid content of 18.21%, and an intrinsic viscosity of 0.65 dL / g solution. Then, 2.0006g (0.0061 mole, 2.5 mole % based on 100 mole % of the tetracarboxylic acid component, 2.0 wt % based on the total weight of the tetracarboxylic acid component and the diamine component, the same applies below) of phosphoric acid Triphenyl ester was added as a phosphorus compound to the resulting polyamic acid solution.

[0126] The polyamic acid solution was applied on a glass plate as a substrate with a bar coater. The resulting coating film was heated at 120°C for 10 minutes, 150°C for 40 minutes, 180°C for 60 minutes, 200°C for 10 minutes, 250°C for 10 minutes, ...

Embodiment 2

[0129] The same procedure as in Example 1 was carried out except that 5.0016 g (0.0153 mol, 6.2 mol %, 5.0 wt %) of triphenyl phosphate was added as a phosphorus compound. The results are shown in Table 2.

Embodiment 3

[0131] The same procedure as in Example 1 was carried out except that 15.0160 g (0.0460 mol, 18.5 mol%, 15.0 wt%) of triphenyl phosphate was added as a phosphorus compound. The results are shown in Table 2.

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a polyimide laminate, which is obtained by the following steps: casting a polyamic acid solution composition containing a phosphorus compound and a polyamic acid on a substrate, and the polyamic acid is composed of 3,3ˊ, 4,4′-biphenyltetracarboxylic dianhydride as the main component of the tetracarboxylic acid component and diamine component containing p-phenylenediamine as the main component obtained; then heating the polyamic acid solution composition to A polyimide layer with a thickness of less than 50 μm is formed on the substrate.

Description

technical field [0001] The present invention relates to a polyimide laminate containing a polyimide layer formed of a specific tetracarboxylic acid component and a specific diamine component, and a method for preparing the same, and has High heat resistance without thermal decomposition in the temperature range of 500°C-650°C. Background technique [0002] It is known that a polyimide film having particularly excellent properties such as heat resistance, chemical resistance, radiation resistance, electrical insulation, dimensional stability, mechanical properties, etc. can be prepared by: [0003] A polyamic acid solution is applied on the substrate by adding an aromatic tetracarboxylic dianhydride containing 3,3',4,4'-biphenyltetracarboxylic dianhydride as a main component in a substantially equimolar ratio. Prepared by reacting aromatic diamines containing p-phenylenediamine as the main component in an aprotic polar solvent such as dimethylacetamide at relatively low temp...

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): B32B27/34B05D3/02B05D7/24
CPCC09D179/08C08G73/1067Y10T428/264B32B27/281B32B37/06B32B27/18C08G73/1028B05D3/02C08J7/04B32B2309/02B32B2309/105
Inventor 中山知则中山刚成
Owner UBE IND LTD