THERMOPLASTIC VULCANIZATES BASED ON FLUOROCARBON POLYMERS

• Main Author: CHMIELEWSKI, CRAIG
• Format: Patent
• Language: English; Spanish
• Published: 02.03.2004
• Edition: 6
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

Disclosed are new fluid resistant, in particular resistant to chemically basic compounds, for example those compounds containing amines, and exceptional processing fluorine containing thermoplastic vulcanizate compositions comprising a continuous phase of at least one melt-formable thermoplastic fluorocarbon resin and a disperse phase consisting of a blend of at least two vulcanizable fluorine containing elastomers with at least one of the fluoroelastomers being a terpolymer of vinylidene fluoride/tetrafluoroethylene/propylene. The vinylidene fluoride/tetrafluoroethylene/propylene fluoroelastomer comprises between 5 and 95 weight percent of the total dispersed elastomer phase, which the total disperse elastomer phase comprises from between 40 and 90 weight percent based on the total amount of the continuous phase and the disperse phase combined. Se dan a conocer nuevas composiciones vulcanizadas termoplasticas que contienen fluor, resistentes al fluido, en particular resistentes a los compuestos quimicamente basicos, por ejemplo a los compuestos que contienen aminas, y de un procesamiento excepcional, las cuales comprenden una fase continua de cuando menos una resina de fluorocarbono termoplastica formable por fusion, y una fase dispersa que consiste en una mezcla de cuando menos dos elastomeros que contienen fluor vulcanizables, siendo cuando menos uno de los fluoroelastomeros un terpolimero de fluoruro de vinilideno/tetrafluoroetileno/propileno. El fluoroelastomero de fluoruro de vinilideno/tetrafluoroetileno/propileno comprende entre el 5 y el 95 por ciento en peso de la fase de elastomero dispersada total, cuya fase de elastomero dispersada total comprende entre el 40 y el 90 por ciento en peso, basandose en la cantidad total de la fase continua y la fase dispersada combinadas.