NORBORNENE-TYPE POLYMER SOLUTION

• Main Authors: YAEGASHI TAKAYUKI, KANAKA KEIICHI, SUZUKI KEN
• Format: Patent
• Language: English; Korean
• Published: 15.06.2015
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

본 발명은 캐스트 필름 제조에 적합한 높은 용액 농도로, 유리전이온도가 170℃ 이상인 노보넨계 중합체를 포함하고 있어도 충분한 유동성을 가지는 노보넨계 중합체 용액을 제공한다. 노보넨계 중합체와 용매를 포함하는 노보넨계 중합체 용액으로서, 상기 노보넨계 중합체는, 유리전이온도가 170℃ 이상이고, 겔 침투 크로마토그래피에 의해 측정된 폴리스티렌 환산의 중량 평균 분자량이 5,000 이상 250,000 이하이고, 상기 노보넨계 중합체를 지방족 탄화수소 용매, 방향족 탄화수소 용매, 및 할로겐계 탄화수소 용매의 적어도 1종에 용해시켜 얻는 20중량% 용액을 23℃에서 24시간 방치했을 때의 상기 20중량% 용액의 점도가 20,000mPa·s 이하인 노보넨계 중합체 용액이다. Provided is a norbornene-type polymer solution which has a high solution concentration that is suitable for the production of cast films, and which can have sufficient fluidability even when a norbornene-type polymer having a glass transition temperature of 170°C or higher is contained. A norbornene-type polymer solution comprising a norbornene-type polymer and a solvent, wherein the norbornene-type polymer has a glass transition temperature of 170°C or higher and a weight average molecular weight of 5,000 to 250,000 inclusive in terms of polystyrene as measured by gel permeation chromatography, and also has such a property that a 20 wt% solution, which is prepared by dissolving the norbornene-type polymer in at least one solvent selected from an aliphatic hydrocarbon solvent, an aromatic hydrocarbon solvent and a halogen-containing hydrocarbon solvent, has a viscosity of 20,000 mPa·s or less when the 20 wt% solution is allowed to stand at 23°C for 24 hours.