COMPOSITIONS AND FILMS COMPRISING POLYLACTIC ACID POLYMER POLYVINYL ACETATE POLYMER AND PLASTICIZER

• Main Authors: CHAKRAVARTY JAYANT, KALISH JEFFREY P, ZHOU NING, LEWANDOWSKI KEVIN M, DEHN DEREK J, MERRILL WILLIAM W, CLOUGH ROBERT S
• Format: Patent
• Language: English; Korean
• Published: 25.08.2017
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES; WORKING-UP

반결정성 폴리락트산 중합체; 25℃ 이상의 유리 전이 온도(Tg)를 갖는 폴리비닐 아세테이트 중합체; 가소제; 및 임의적으로, 비정형 폴리락트산 중합체를 포함하는 조성물이 기재된다. 또 다른 실시양태에서, 상기 조성물은 핵형성제를 추가로 포함한다. 또한, 상기 조성물을 포함하는 필름뿐만 아니라 본원에 기술된 필름 및 상기 필름 상에 배치된 감압성 접착제의 층을 포함하는 물품, 예를 들어 테이프 및 시트가 기재된다. A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25°C; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.