HIGH TG MONOLITHIC POLYVINYL ACETAL SHEET

• Main Authors: FARHOUDI YALDA, SZLOSEK MEGAN LEE, KARAGIANNIS ARISTOTELIS
• Format: Patent
• Language: English; Korean
• Published: 23.08.2017
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

본 발명은 폴리(비닐 아세탈), 예컨대 폴리비닐 부티랄, 수지 제형화, 폴리(비닐 아세탈) 수지의 압출 방법, 50℃ 이상의 고 Tg, 및 이들의 고 용융 흐름 지수에 의해 시사되는 바와 같은 허용가능한 속도에서 고 탄성률을 갖는 일체형 폴리(비닐 아세탈) 시트 및 유리 페인을 제공하는 관련된 재료 및 생성물에 관한 것이다. 이는 160,000 이하의 저 분자량 수지를 사용하고 가소화제의 양을 감소시킴으로써 고 용융 흐름 지수 및 고 Tg를 갖는 열가소성 수지를 수득하는 것을 가능하게 한다. 이들 일체형 중간층 시트로 제조된 물품은 외기 온도에서 양호한 탄성률을 요구하는 적용에 사용될 수 있다. A polyvinyl acetal poly(vinyl acetal), such as polyvinyl butyral, resin formulation, a method of extruding poly(vinyl acetal) resins, and related materials and products that provide for monolithic poly(vinyl acetal) sheets and glass panes having high Tg of at least 50° C. and high modulus at acceptable rates as indicated by their high melt flow index. This is made possible by a reduction in the amount of plasticizer while using a low molecular weight resin not to exceed 160,000 to obtain a thermoplastic resin having a high melt flow index and high Tg. The articles made with these monolithic interlayer sheets can be used in applications that require good modulus at outdoor temperatures.