Aromatic ring polymer and low-dielectric material

• Main Authors: UEDA MITSURU, ISHII HIROTOSHI
• Format: Patent
• Language: English
• Published: 10.08.2006
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; BASIC ELECTRIC ELEMENTS; CABLES; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; CONDUCTORS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INSULATORS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PRINTED CIRCUITS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING

An aromatic ring polymer wherein adjacent aromatic ring skeletons cannot have a conformation positioned on a single plane due to mutual steric hindrance of the adjacent aromatic ring skeletons and is represented by the following formula (1): <img id="PRIVATE-USE-CHARACTER-00001" he="7.20mm" wi="8.47mm" file="US20060178542A1-20060810-Brketopenst.TIF" alt="private use character Brketopenst" img-content="character" img-format="tif" />X-A-Y-B<img id="PRIVATE-USE-CHARACTER-00002" he="6.77mm" wi="8.47mm" file="US20060178542A1-20060810-Brketclosest.TIF" alt="private use character Brketclosest" img-content="character" img-format="tif" />n (1) wherein X and Y may be the same or different, and each represent a monocyclic or heterocyclic bivalent aromatic group which may be substituted with R; A and B may be the same or different, and are each a single bond or a substituent which can contain an aromatic group; and n is an integer of 5 to 1000000. This polymer has a low dielectric constant, and is excellent in heat resistance and strength.