CYCLIC OLEFINIC COPOLYMER, CYCLIC OLEFINIC COPOLYMER COMPOSITION AND CROSSLINKED BODY

• Main Authors: IIDA KENJI, ASAHINA KOTARO, MURASE HIROHIKO
• Format: Patent
• Language: English; Japanese
• Published: 30.05.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PRINTED CIRCUITS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

To provide a cyclic olefinic copolymer that makes it possible to obtain a crosslinked body having excellent dielectric properties in a high frequency region suitable for a circuit board or the like, and also has excellent moldability, and a cyclic olefinic copolymer composition.SOLUTION: A cyclic olefinic copolymer (m) has a crosslinkable group, containing (A) a repeating unit derived from at least one olefin represented by a specific chemical formula, (B) a repeating unit derived from at least one cyclic nonconjugated diene represented by a specific chemical formula, and (C) a repeating unit derived from at least one cyclic olefin represented by a specific chemical formula. The content of the (B) cyclic nonconjugated diene-derived repeating unit is 19 mol% or more and 36 mol% or less, and the number average molecular weight Mn is 3,000 or more and 16,000 or less.SELECTED DRAWING: None 【課題】回路基板等に好適な高周波領域での誘電特性に優れた架橋体を得ることが可能であるとともに成形性にも優れた環状オレフィン系共重合体および環状オレフィン系共重合体組成物を提供する。【解決手段】本発明の環状オレフィン系共重合体（ｍ）は、特定の化学式で表される１種以上のオレフィン由来の繰り返し単位（Ａ）と、特定の化学式で表される１種以上の環状非共役ジエン由来の繰り返し単位（Ｂ）と、特定の化学式で表される１種以上の環状オレフィン由来の繰り返し単位（Ｃ）と、を含む、架橋性基を有する環状オレフィン系共重合体であって、環状非共役ジエン由来の繰り返し単位（Ｂ）の含有量が１９モル％以上３６モル％以下であり、数平均分子量Ｍｎが３，０００以上１６，０００以下の範囲にある。【選択図】なし