POLYAMIDE HAVING SIDE CHAIN OF ACETAL OR CYCLIC DERIVATIVE THEREOF AND HEAT-RESISTANT PHOTORESIST COMPOSITION PREPARED FROM THE SAME

PROBLEM TO BE SOLVED: To prevent increase in the dielectric constant due to residual hydroxyl groups and to retain high heat resistance by providing a side chain of a specified acetal or its cyclic derivative. SOLUTION: A polyamide has a side chain of an acetal of formula I or its cyclic derivatives...

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Bibliographische Detailangaben
Hauptverfasser:	PAKU DON-WON, WON JON CHAN, CHOI KIRU-YON, WOO SAN SUN, JIN MUUN YAN, OO JAE MIN, RII MUU YAN, KIM TAE-KYUN
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR BASIC ELECTRIC ELEMENTS CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HOLOGRAPHY MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS THEREFOR METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS SEMICONDUCTOR DEVICES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prevent increase in the dielectric constant due to residual hydroxyl groups and to retain high heat resistance by providing a side chain of a specified acetal or its cyclic derivative. SOLUTION: A polyamide has a side chain of an acetal of formula I or its cyclic derivatives. In the formula I, Ar1 is a tetravalent aromatic group, Ar2 is a divalent aromatic group R1, and R2 are the same or different and are each H or a 1-10C linear, branched or cyclic hydrocarbon ester, specifically, however excluding a group of formula II, however, excluding the case where R1 and R2 are simultaneously H. The range for m+n is from 5 to 500. In the formula II, R' is a 1-6C lower alkyl, e.g. ethyl, propyl or isopropyl. The polyamide having formula I as a repeating unit is a home- or copolymer from the combination of Ar1 and Ar2.