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Side-chain group equipped polyimide and preparation method thereof

A technology of polyimide and polyamic acid, applied in the field of polyimide with side chain group and its preparation, can solve the problem of poor solubility, large intermolecular force of polyimide, and reducing the possibility of polyimide. Processability and other issues, to achieve the effect of good solubility and low intermolecular polar force

Active Publication Date: 2014-08-27
UNIMICRON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong intermolecular force of polyimide, the solubility of polyimide to organic solvents is poor, which jointly reduces the processability of polyimide.

Method used

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  • Side-chain group equipped polyimide and preparation method thereof
  • Side-chain group equipped polyimide and preparation method thereof
  • Side-chain group equipped polyimide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The diamine monomer (a) of the first embodiment of the present invention is 1,4-bis(4-aminophenoxy)-2-adamantylbenzene, and its structure is as follows:

[0032]

[0033] The preparation method of the above diamine monomer includes three main steps: the formation of 2-adamantyl hydroquinone (2-adamantyl hydroquinone), the formation of 1,4-bis(4-nitrophenoxy)-2- Adamantylbenzene (1,4-bis(4-notrophenoxy)-2-adamantylbenzene) and the formation of 1,4-bis(4-aminophenoxy)-2-adamantylbenzene (1,4-bis( 4-aminophenoxy)-2-adamantyl benzene).

[0034] The steps for forming 2-adamantyl hydroquinone include, first, add 15 grams (69.77 mmol) of 1-bromoadamantane, 15.35 grams (139.5 mmol) of hydroquinone, and 75 ml of benzene into a 250 ml three-necked flask purged with nitrogen In, heating to reflux for 72 hours, the reaction temperature is about 80-85°C, the boiling point of benzene. It should be noted that during the reaction process, a large amount of white smoke can be seen ...

Embodiment 2

[0061] The dianhydride monomer (b) of the second embodiment of the present invention is 1,4-bis(3,4-dicarboxyphenoxy)-2-adamantylphthalic anhydride, and its structure is as follows:

[0062]

[0063] The preparation method of this dianhydride monomer includes four main steps: forming 2-adamantyl hydroquinone (2-adamantyl hydroquinone), 1,4-bis(3,4-dicyanophenoxy)- 2-adamantylbenzene (1,4-bis(3,4-dicyanophenoxy)-2-adamantyl benzene), 1,4-bis(3,4-dicarboxyphenoxy)-2-adamantylbenzene ( 1,4-bis(3,4-dicarboxyphenoxy)-2-adamantyl benzene) and 1,4-bis(3,4-dicarboxyphenoxy)-2-adamantylphthalic anhydride (1,4-bis (3,4-dicarboxyphenoxy)-2-adamantyl benzene dianhydride).

[0064] The steps for forming 2-adamantylhydroquinone are the same as those in the first embodiment, and will not be repeated here. And the step of forming 1,4-bis(3,4-dicyanophenoxy)-2-adamantylbenzene comprises, 2 grams (8.197mmol) of 2-adamantylhydroquinone, anhydrous carbonic acid Add 1.25 g (9.06 mmol) of pot...

Embodiment 3

[0081] The polyimide compound (c) of the third embodiment of the present invention uses 1,4-bis(4-aminophenoxy)-2-adamantylbenzene as the diamine monomer (a) of the present invention, and 1,4-bis(3,4-dicarboxyphenoxy)-2-adamantylphthalic anhydride is used as the dianhydride monomer (b) of the present invention to prepare the polyimide compound (c). And the polyimide compound (c) of the third embodiment of the present invention has the following structure:

[0082]

[0083] In summary, the present invention provides a polyimide compound with side chain groups and a preparation method thereof. The polyimide compound has a large side chain group, so its structural symmetry and arrangement regularity are relatively low, thereby improving the solubility of the polyimide compound in various solvents.

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Abstract

The invention relates to a side-chain group equipped polyimide compound and a preparation method thereof. The side-chain group of the polyimide compound is R and R', so that the structural asymmetry and arrangement irregularity of the polyimide compound can be increased. The polyimide compound has a structural formula as the following, and the side-chain group R and R' are a group of a cluster composed of the following groups: cyclokene of alpha substituent group with at least one tertiary carbon, cycloalkane with a tertiary carbon, cyclokene with at least one tertiary carbon, phenyl, phenyl of alpha substituent group, naphthalene, naphthalene of alpha substituent group, anthracene, anthracene of alpha substituent group, phenanthrene, phenanthrene of alpha substituent group, an aromatic hydrocarbon derivative of alpha substituent group, aromatic hydrocarbon derivative, adamantane, adamantane of alpha substituent group, diamantine, diamantine of alpha substituent group.

Description

technical field [0001] The invention relates to a polyimide and a preparation method thereof, in particular to a polyimide with a side chain group and a preparation method thereof. Background technique [0002] Polyimide (polyimide) is a common industrial plastic at present. It has good mechanical properties, high glass transition temperature and high thermal cracking temperature. Therefore, it is often used as a dielectric material or an adhesive material and is widely used. In the semiconductor industry, optoelectronic industry and machinery industry. However, due to the strong intermolecular force of polyimide, the solubility of polyimide to organic solvents is poor, which jointly reduces the processability of polyimide. At present, there are many studies on the properties of polyimide, hoping to increase the solubility of polyimide molecules while maintaining certain thermal and mechanical properties. Contents of the invention [0003] The present invention provides ...

Claims

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Application Information

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IPC IPC(8): C08G73/10C08G73/12
Inventor 黄瀚霈
Owner UNIMICRON TECH CORP
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