BLOCK POLYIMIDE, BLOCK POLYAMIDE ACID IMIDE AND USE THEREOF
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United States of America Patent
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app pub date -
Apr 23, 2014
filing date -
Apr 25, 2013
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Abstract
The purpose of the present invention is to provide a block polyamide acid imide having an appropriate solubility in aqueous alkaline solutions, and block polyimides that are obtained using same and have high transparency and a low coefficient of linear thermal expansion (low CTE). This block polyimide comprises blocks configured from repeating structural units represented by formula (1A) and blocks configured from repeating structural units represented by formula (1B).
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International Classification(s)
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- G03F:PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNE....
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- H05K:PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAIL....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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