COMPOSITIONS OF RANDOM COPOLYMERS OF PROPENE CONTAINING AN ALPHA-OLEFIN AS COMONOMER

• Main Authors: BECCARINI, ENRICO, PELLICONI, ANTEO
• Format: Patent
• Language: English; French
• Published: 17.02.2009
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

Semicrystalline polyolefin composition comprising copolymers a), b), and c) of propylene with at least one comonomer selected from C4-C10 .alpha.-olefins, wherein the total content of recurring units from the said comonomer, referred to the composition, is equal to or higher than 6%, and the respective percentages representing the content of said recurring units in each one of the copolymers a), b), and c) are different from each other, said difference being of at least 1 percentage unit. L'invention concerne une composition de polyoléfine semicristalline renfermant des copolymères a), b), c) de propylène associés à au moins un comonomère sélectionné parmi les alpha -oléfines C4-C10, la teneur totale d'unités récurrentes dudit comonomère, par rapport à la composition, étant supérieure ou égale à 6 % et les pourcentages respectifs qui représentent la teneur de ces unités récurrentes dans chaque copolymère a), b) et c) étant différents les uns des autres, la différence de pourcentage étant au moins d'une unité.